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Merge 4.19-rc4 into usb-next 

We need the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2018-09-16 22:44:14 +02:00
parent d6142b91e9 7876320f88
commit 1652a83fa4
615 changed files with 6046 additions and 3604 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
Documentation/ABI/stable/sysfs-devices-system-xen_memory
View File

@ -75,3 +75,12 @@ Contact: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Description:
Amount (in KiB) of low (or normal) memory in the
balloon.
What: /sys/devices/system/xen_memory/xen_memory0/scrub_pages
Date: September 2018
KernelVersion: 4.20
Contact: xen-devel@lists.xenproject.org
Description:
Control scrubbing pages before returning them to Xen for others domains
use. Can be set with xen_scrub_pages cmdline
parameter. Default value controlled with CONFIG_XEN_SCRUB_PAGES_DEFAULT.

12
Documentation/admin-guide/kernel-parameters.txt
View File

@ -3523,6 +3523,12 @@
ramdisk_size= [RAM] Sizes of RAM disks in kilobytes
See Documentation/blockdev/ramdisk.txt.
random.trust_cpu={on,off}
[KNL] Enable or disable trusting the use of the
CPU's random number generator (if available) to
fully seed the kernel's CRNG. Default is controlled
by CONFIG_RANDOM_TRUST_CPU.
ras=option[,option,...] [KNL] RAS-specific options
cec_disable [X86]
@ -4994,6 +5000,12 @@
Disables the PV optimizations forcing the HVM guest to
run as generic HVM guest with no PV drivers.
xen_scrub_pages= [XEN]
Boolean option to control scrubbing pages before giving them back
to Xen, for use by other domains. Can be also changed at runtime
with /sys/devices/system/xen_memory/xen_memory0/scrub_pages.
Default value controlled with CONFIG_XEN_SCRUB_PAGES_DEFAULT.
xirc2ps_cs= [NET,PCMCIA]
Format:
<irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]

4
Documentation/device-mapper/dm-raid.txt
View File

@ -348,3 +348,7 @@ Version History
1.13.1 Fix deadlock caused by early md_stop_writes(). Also fix size an
state races.
1.13.2 Fix raid redundancy validation and avoid keeping raid set frozen
1.14.0 Fix reshape race on small devices. Fix stripe adding reshape
deadlock/potential data corruption. Update superblock when
specific devices are requested via rebuild. Fix RAID leg
rebuild errors.

3
Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.txt
View File

@ -3,7 +3,6 @@
Required properties:
- compatible :
- "fsl,imx7ulp-lpi2c" for LPI2C compatible with the one integrated on i.MX7ULP soc
- "fsl,imx8dv-lpi2c" for LPI2C compatible with the one integrated on i.MX8DV soc
- reg : address and length of the lpi2c master registers
- interrupts : lpi2c interrupt
- clocks : lpi2c clock specifier
@ -11,7 +10,7 @@ Required properties:
Examples:
lpi2c7: lpi2c7@40a50000 {
compatible = "fsl,imx8dv-lpi2c";
compatible = "fsl,imx7ulp-lpi2c";
reg = <0x40A50000 0x10000>;
interrupt-parent = <&intc>;
interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;

6
Documentation/devicetree/bindings/net/cpsw.txt
View File

@ -19,6 +19,10 @@ Required properties:
- slaves : Specifies number for slaves
- active_slave : Specifies the slave to use for time stamping,
ethtool and SIOCGMIIPHY
- cpsw-phy-sel : Specifies the phandle to the CPSW phy mode selection
device. See also cpsw-phy-sel.txt for it's binding.
Note that in legacy cases cpsw-phy-sel may be
a child device instead of a phandle.
Optional properties:
- ti,hwmods : Must be "cpgmac0"
@ -75,6 +79,7 @@ Examples:
cpts_clock_mult = <0x80000000>;
cpts_clock_shift = <29>;
syscon = <&cm>;
cpsw-phy-sel = <&phy_sel>;
cpsw_emac0: slave@0 {
phy_id = <&davinci_mdio>, <0>;
phy-mode = "rgmii-txid";
@ -103,6 +108,7 @@ Examples:
cpts_clock_mult = <0x80000000>;
cpts_clock_shift = <29>;
syscon = <&cm>;
cpsw-phy-sel = <&phy_sel>;
cpsw_emac0: slave@0 {
phy_id = <&davinci_mdio>, <0>;
phy-mode = "rgmii-txid";

1
Documentation/devicetree/bindings/net/sh_eth.txt
View File

@ -16,6 +16,7 @@ Required properties:
"renesas,ether-r8a7794" if the device is a part of R8A7794 SoC.
"renesas,gether-r8a77980" if the device is a part of R8A77980 SoC.
"renesas,ether-r7s72100" if the device is a part of R7S72100 SoC.
"renesas,ether-r7s9210" if the device is a part of R7S9210 SoC.
"renesas,rcar-gen1-ether" for a generic R-Car Gen1 device.
"renesas,rcar-gen2-ether" for a generic R-Car Gen2 or RZ/G1
device.

21
Documentation/filesystems/vfs.txt
View File

@ -848,7 +848,7 @@ struct file_operations
----------------------
This describes how the VFS can manipulate an open file. As of kernel
4.1, the following members are defined:
4.18, the following members are defined:
struct file_operations {
struct module *owner;
@ -858,11 +858,11 @@ struct file_operations {
ssize_t (*read_iter) (struct kiocb *, struct iov_iter *);
ssize_t (*write_iter) (struct kiocb *, struct iov_iter *);
int (*iterate) (struct file *, struct dir_context *);
int (*iterate_shared) (struct file *, struct dir_context *);
__poll_t (*poll) (struct file *, struct poll_table_struct *);
long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
int (*mmap) (struct file *, struct vm_area_struct *);
int (*mremap)(struct file *, struct vm_area_struct *);
int (*open) (struct inode *, struct file *);
int (*flush) (struct file *, fl_owner_t id);
int (*release) (struct inode *, struct file *);
@ -882,6 +882,10 @@ struct file_operations {
#ifndef CONFIG_MMU
unsigned (*mmap_capabilities)(struct file *);
#endif
ssize_t (*copy_file_range)(struct file *, loff_t, struct file *, loff_t, size_t, unsigned int);
int (*clone_file_range)(struct file *, loff_t, struct file *, loff_t, u64);
int (*dedupe_file_range)(struct file *, loff_t, struct file *, loff_t, u64);
int (*fadvise)(struct file *, loff_t, loff_t, int);
};
Again, all methods are called without any locks being held, unless
@ -899,6 +903,9 @@ otherwise noted.
iterate: called when the VFS needs to read the directory contents
iterate_shared: called when the VFS needs to read the directory contents
when filesystem supports concurrent dir iterators
poll: called by the VFS when a process wants to check if there is
activity on this file and (optionally) go to sleep until there
is activity. Called by the select(2) and poll(2) system calls
@ -951,6 +958,16 @@ otherwise noted.
fallocate: called by the VFS to preallocate blocks or punch a hole.
copy_file_range: called by the copy_file_range(2) system call.
clone_file_range: called by the ioctl(2) system call for FICLONERANGE and
FICLONE commands.
dedupe_file_range: called by the ioctl(2) system call for FIDEDUPERANGE
command.
fadvise: possibly called by the fadvise64() system call.
Note that the file operations are implemented by the specific
filesystem in which the inode resides. When opening a device node
(character or block special) most filesystems will call special

2
Documentation/process/changes.rst
View File

@ -86,7 +86,7 @@ pkg-config
The build system, as of 4.18, requires pkg-config to check for installed
kconfig tools and to determine flags settings for use in
'make {menu,n,g,x}config'. Previously pkg-config was being used but not
'make {g,x}config'. Previously pkg-config was being used but not
verified or documented.
Flex

81
Documentation/process/code-of-conduct.rst Normal file
View File

@ -0,0 +1,81 @@
Contributor Covenant Code of Conduct
++++++++++++++++++++++++++++++++++++
Our Pledge
==========
In the interest of fostering an open and welcoming environment, we as
contributors and maintainers pledge to making participation in our project and
our community a harassment-free experience for everyone, regardless of age, body
size, disability, ethnicity, sex characteristics, gender identity and
expression, level of experience, education, socio-economic status, nationality,
personal appearance, race, religion, or sexual identity and orientation.
Our Standards
=============
Examples of behavior that contributes to creating a positive environment
include:
* Using welcoming and inclusive language
* Being respectful of differing viewpoints and experiences
* Gracefully accepting constructive criticism
* Focusing on what is best for the community
* Showing empathy towards other community members
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery and unwelcome sexual attention or
advances
* Trolling, insulting/derogatory comments, and personal or political attacks
* Public or private harassment
* Publishing others’ private information, such as a physical or electronic
address, without explicit permission
* Other conduct which could reasonably be considered inappropriate in a
professional setting
Our Responsibilities
====================
Maintainers are responsible for clarifying the standards of acceptable behavior
and are expected to take appropriate and fair corrective action in response to
any instances of unacceptable behavior.
Maintainers have the right and responsibility to remove, edit, or reject
comments, commits, code, wiki edits, issues, and other contributions that are
not aligned to this Code of Conduct, or to ban temporarily or permanently any
contributor for other behaviors that they deem inappropriate, threatening,
offensive, or harmful.
Scope
=====
This Code of Conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community. Examples of
representing a project or community include using an official project e-mail
address, posting via an official social media account, or acting as an appointed
representative at an online or offline event. Representation of a project may be
further defined and clarified by project maintainers.
Enforcement
===========
Instances of abusive, harassing, or otherwise unacceptable behavior may be
reported by contacting the Technical Advisory Board (TAB) at
<tab@lists.linux-foundation.org>. All complaints will be reviewed and
investigated and will result in a response that is deemed necessary and
appropriate to the circumstances. The TAB is obligated to maintain
confidentiality with regard to the reporter of an incident. Further details of
specific enforcement policies may be posted separately.
Maintainers who do not follow or enforce the Code of Conduct in good faith may
face temporary or permanent repercussions as determined by other members of the
project’s leadership.
Attribution
===========
This Code of Conduct is adapted from the Contributor Covenant, version 1.4,
available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html

28
Documentation/process/code-of-conflict.rst
View File

@ -1,28 +0,0 @@
Code of Conflict
----------------
The Linux kernel development effort is a very personal process compared
to "traditional" ways of developing software. Your code and ideas
behind it will be carefully reviewed, often resulting in critique and
criticism. The review will almost always require improvements to the
code before it can be included in the kernel. Know that this happens
because everyone involved wants to see the best possible solution for
the overall success of Linux. This development process has been proven
to create the most robust operating system kernel ever, and we do not
want to do anything to cause the quality of submission and eventual
result to ever decrease.
If however, anyone feels personally abused, threatened, or otherwise
uncomfortable due to this process, that is not acceptable. If so,
please contact the Linux Foundation's Technical Advisory Board at
<tab@lists.linux-foundation.org>, or the individual members, and they
will work to resolve the issue to the best of their ability. For more
information on who is on the Technical Advisory Board and what their
role is, please see:
- http://www.linuxfoundation.org/projects/linux/tab
As a reviewer of code, please strive to keep things civil and focused on
the technical issues involved. We are all humans, and frustrations can
be high on both sides of the process. Try to keep in mind the immortal
words of Bill and Ted, "Be excellent to each other."

2
Documentation/process/index.rst
View File

@ -20,7 +20,7 @@ Below are the essential guides that every developer should read.
:maxdepth: 1
howto
code-of-conflict
code-of-conduct
development-process
submitting-patches
coding-style

5
Documentation/scsi/scsi-parameters.txt
View File

@ -97,6 +97,11 @@ parameters may be changed at runtime by the command
allowing boot to proceed. none ignores them, expecting
user space to do the scan.
scsi_mod.use_blk_mq=
[SCSI] use blk-mq I/O path by default
See SCSI_MQ_DEFAULT in drivers/scsi/Kconfig.
Format: <y/n>
sim710= [SCSI,HW]
See header of drivers/scsi/sim710.c.

25
Documentation/x86/earlyprintk.txt
View File

@ -35,25 +35,25 @@ and two USB cables, connected like this:
( If your system does not list a debug port capability then you probably
won't be able to use the USB debug key. )
b.) You also need a Netchip USB debug cable/key:
b.) You also need a NetChip USB debug cable/key:
http://www.plxtech.com/products/NET2000/NET20DC/default.asp
This is a small blue plastic connector with two USB connections,
This is a small blue plastic connector with two USB connections;
it draws power from its USB connections.
c.) You need a second client/console system with a high speed USB 2.0
port.
d.) The Netchip device must be plugged directly into the physical
d.) The NetChip device must be plugged directly into the physical
debug port on the "host/target" system. You cannot use a USB hub in
between the physical debug port and the "host/target" system.
The EHCI debug controller is bound to a specific physical USB
port and the Netchip device will only work as an early printk
port and the NetChip device will only work as an early printk
device in this port. The EHCI host controllers are electrically
wired such that the EHCI debug controller is hooked up to the
first physical and there is no way to change this via software.
first physical port and there is no way to change this via software.
You can find the physical port through experimentation by trying
each physical port on the system and rebooting. Or you can try
and use lsusb or look at the kernel info messages emitted by the
@ -65,9 +65,9 @@ and two USB cables, connected like this:
to the hardware vendor, because there is no reason not to wire
this port into one of the physically accessible ports.
e.) It is also important to note, that many versions of the Netchip
e.) It is also important to note, that many versions of the NetChip
device require the "client/console" system to be plugged into the
right and side of the device (with the product logo facing up and
right hand side of the device (with the product logo facing up and
readable left to right). The reason being is that the 5 volt
power supply is taken from only one side of the device and it
must be the side that does not get rebooted.
@ -81,13 +81,18 @@ and two USB cables, connected like this:
CONFIG_EARLY_PRINTK_DBGP=y
And you need to add the boot command line: "earlyprintk=dbgp".
(If you are using Grub, append it to the 'kernel' line in
/etc/grub.conf)
/etc/grub.conf. If you are using Grub2 on a BIOS firmware system,
append it to the 'linux' line in /boot/grub2/grub.cfg. If you are
using Grub2 on an EFI firmware system, append it to the 'linux'
or 'linuxefi' line in /boot/grub2/grub.cfg or
/boot/efi/EFI/<distro>/grub.cfg.)
On systems with more than one EHCI debug controller you must
specify the correct EHCI debug controller number. The ordering
comes from the PCI bus enumeration of the EHCI controllers. The
default with no number argument is "0" the first EHCI debug
default with no number argument is "0" or the first EHCI debug
controller. To use the second EHCI debug controller, you would
use the command line: "earlyprintk=dbgp1"
@ -111,7 +116,7 @@ and two USB cables, connected like this:
see the raw output.
c.) On Nvidia Southbridge based systems: the kernel will try to probe
and find out which port has debug device connected.
and find out which port has a debug device connected.
3. Testing that it works fine:

27
MAINTAINERS
View File

@ -2311,6 +2311,7 @@ F: drivers/clocksource/cadence_ttc_timer.c
F: drivers/i2c/busses/i2c-cadence.c
F: drivers/mmc/host/sdhci-of-arasan.c
F: drivers/edac/synopsys_edac.c
F: drivers/i2c/busses/i2c-xiic.c
ARM64 PORT (AARCH64 ARCHITECTURE)
M: Catalin Marinas <catalin.marinas@arm.com>
@ -5624,6 +5625,8 @@ F: lib/fault-inject.c
FBTFT Framebuffer drivers
M: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
L: dri-devel@lists.freedesktop.org
L: linux-fbdev@vger.kernel.org
S: Maintained
F: drivers/staging/fbtft/
@ -6059,7 +6062,7 @@ F: Documentation/gcc-plugins.txt
GASKET DRIVER FRAMEWORK
M: Rob Springer <rspringer@google.com>
M: John Joseph <jnjoseph@google.com>
M: Todd Poynor <toddpoynor@google.com>
M: Ben Chan <benchan@chromium.org>
S: Maintained
F: drivers/staging/gasket/
@ -7015,6 +7018,20 @@ F: drivers/crypto/vmx/aes*
F: drivers/crypto/vmx/ghash*
F: drivers/crypto/vmx/ppc-xlate.pl
IBM Power PCI Hotplug Driver for RPA-compliant PPC64 platform
M: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
L: linux-pci@vger.kernel.org
L: linuxppc-dev@lists.ozlabs.org
S: Supported
F: drivers/pci/hotplug/rpaphp*
IBM Power IO DLPAR Driver for RPA-compliant PPC64 platform
M: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
L: linux-pci@vger.kernel.org
L: linuxppc-dev@lists.ozlabs.org
S: Supported
F: drivers/pci/hotplug/rpadlpar*
IBM ServeRAID RAID DRIVER
S: Orphan
F: drivers/scsi/ips.*
@ -8299,7 +8316,7 @@ F: include/linux/libata.h
F: Documentation/devicetree/bindings/ata/
LIBLOCKDEP
M: Sasha Levin <alexander.levin@verizon.com>
M: Sasha Levin <alexander.levin@microsoft.com>
S: Maintained
F: tools/lib/lockdep/
@ -11153,7 +11170,7 @@ F: drivers/pci/controller/dwc/pci-exynos.c
PCI DRIVER FOR SYNOPSYS DESIGNWARE
M: Jingoo Han <jingoohan1@gmail.com>
M: Joao Pinto <Joao.Pinto@synopsys.com>
M: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
L: linux-pci@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/pci/designware-pcie.txt
@ -11345,10 +11362,10 @@ S: Maintained
F: drivers/platform/x86/peaq-wmi.c
PER-CPU MEMORY ALLOCATOR
M: Dennis Zhou <dennis@kernel.org>
M: Tejun Heo <tj@kernel.org>
M: Christoph Lameter <cl@linux.com>
M: Dennis Zhou <dennisszhou@gmail.com>
T: git git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu.git
S: Maintained
F: include/linux/percpu*.h
F: mm/percpu*.c

10
Makefile
View File

@ -2,7 +2,7 @@
VERSION = 4
PATCHLEVEL = 19
SUBLEVEL = 0
EXTRAVERSION = -rc2
EXTRAVERSION = -rc4
NAME = Merciless Moray
# *DOCUMENTATION*
@ -616,6 +616,11 @@ CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \
$(call cc-disable-warning,maybe-uninitialized,)
export CFLAGS_GCOV
# The arch Makefiles can override CC_FLAGS_FTRACE. We may also append it later.
ifdef CONFIG_FUNCTION_TRACER
CC_FLAGS_FTRACE := -pg
endif
# The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default
# values of the respective KBUILD_* variables
ARCH_CPPFLAGS :=
@ -755,9 +760,6 @@ KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \
endif
ifdef CONFIG_FUNCTION_TRACER
ifndef CC_FLAGS_FTRACE
CC_FLAGS_FTRACE := -pg
endif
ifdef CONFIG_FTRACE_MCOUNT_RECORD
# gcc 5 supports generating the mcount tables directly
ifeq ($(call cc-option-yn,-mrecord-mcount),y)

10
arch/arc/Kconfig
View File

@ -9,6 +9,7 @@
config ARC
def_bool y
select ARC_TIMERS
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_HAS_SG_CHAIN
@ -28,8 +29,12 @@ config ARC
select GENERIC_SMP_IDLE_THREAD
select HAVE_ARCH_KGDB
select HAVE_ARCH_TRACEHOOK
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_GENERIC_DMA_COHERENT
select HAVE_IOREMAP_PROT
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_LZMA
select HAVE_KPROBES
select HAVE_KRETPROBES
select HAVE_MEMBLOCK
@ -44,11 +49,6 @@ config ARC
select OF_EARLY_FLATTREE
select OF_RESERVED_MEM
select PERF_USE_VMALLOC if ARC_CACHE_VIPT_ALIASING
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_GENERIC_DMA_COHERENT
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_LZMA
select ARCH_HAS_PTE_SPECIAL
config ARCH_HAS_CACHE_LINE_SIZE
def_bool y

10
arch/arc/Makefile
View File

@ -43,10 +43,7 @@ ifdef CONFIG_ARC_CURR_IN_REG
LINUXINCLUDE += -include ${src}/arch/arc/include/asm/current.h
endif
upto_gcc44 := $(call cc-ifversion, -le, 0404, y)
atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y)
cflags-$(atleast_gcc44) += -fsection-anchors
cflags-y += -fsection-anchors
cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
@ -82,11 +79,6 @@ cflags-$(disable_small_data) += -mno-sdata -fcall-used-gp
cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mbig-endian
ldflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
# STAR 9000518362: (fixed with binutils shipping with gcc 4.8)
# arc-linux-uclibc-ld (buildroot) or arceb-elf32-ld (EZChip) don't accept
# --build-id w/o "-marclinux". Default arc-elf32-ld is OK
ldflags-$(upto_gcc44) += -marclinux
LIBGCC := $(shell $(CC) $(cflags-y) --print-libgcc-file-name)
# Modules with short calls might break for calls into builtin-kernel

26
arch/arc/boot/dts/axc003.dtsi
View File

@ -93,6 +93,32 @@
};
};
/*
* Mark DMA peripherals connected via IOC port as dma-coherent. We do
* it via overlay because peripherals defined in axs10x_mb.dtsi are
* used for both AXS101 and AXS103 boards and only AXS103 has IOC (so
* only AXS103 board has HW-coherent DMA peripherals)
* We don't need to mark pgu@17000 as dma-coherent because it uses
* external DMA buffer located outside of IOC aperture.
*/
axs10x_mb {
ethernet@0x18000 {
dma-coherent;
};
ehci@0x40000 {
dma-coherent;
};
ohci@0x60000 {
dma-coherent;
};
mmc@0x15000 {
dma-coherent;
};
};
/*
* The DW APB ICTL intc on MB is connected to CPU intc via a
* DT "invisible" DW APB GPIO block, configured to simply pass thru

26
arch/arc/boot/dts/axc003_idu.dtsi
View File

@ -100,6 +100,32 @@
};
};
/*
* Mark DMA peripherals connected via IOC port as dma-coherent. We do
* it via overlay because peripherals defined in axs10x_mb.dtsi are
* used for both AXS101 and AXS103 boards and only AXS103 has IOC (so
* only AXS103 board has HW-coherent DMA peripherals)
* We don't need to mark pgu@17000 as dma-coherent because it uses
* external DMA buffer located outside of IOC aperture.
*/
axs10x_mb {
ethernet@0x18000 {
dma-coherent;
};
ehci@0x40000 {
dma-coherent;
};
ohci@0x60000 {
dma-coherent;
};
mmc@0x15000 {
dma-coherent;
};
};
/*
* This INTC is actually connected to DW APB GPIO
* which acts as a wire between MB INTC and CPU INTC.

7
arch/arc/boot/dts/axs10x_mb.dtsi
View File

@ -9,6 +9,10 @@
*/
/ {
aliases {
ethernet = &gmac;
};
axs10x_mb {
compatible = "simple-bus";
#address-cells = <1>;
@ -68,7 +72,7 @@
};
};
ethernet@0x18000 {
gmac: ethernet@0x18000 {
#interrupt-cells = <1>;
compatible = "snps,dwmac";
reg = < 0x18000 0x2000 >;
@ -81,6 +85,7 @@
max-speed = <100>;
resets = <&creg_rst 5>;
reset-names = "stmmaceth";
mac-address = [00 00 00 00 00 00]; /* Filled in by U-Boot */
};
ehci@0x40000 {

11
arch/arc/boot/dts/hsdk.dts
View File

@ -25,6 +25,10 @@
bootargs = "earlycon=uart8250,mmio32,0xf0005000,115200n8 console=ttyS0,115200n8 debug print-fatal-signals=1";
};
aliases {
ethernet = &gmac;
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
@ -163,7 +167,7 @@
#clock-cells = <0>;
};
ethernet@8000 {
gmac: ethernet@8000 {
#interrupt-cells = <1>;
compatible = "snps,dwmac";
reg = <0x8000 0x2000>;
@ -176,6 +180,8 @@
phy-handle = <&phy0>;
resets = <&cgu_rst HSDK_ETH_RESET>;
reset-names = "stmmaceth";
mac-address = [00 00 00 00 00 00]; /* Filled in by U-Boot */
dma-coherent;
mdio {
#address-cells = <1>;
@ -194,12 +200,14 @@
compatible = "snps,hsdk-v1.0-ohci", "generic-ohci";
reg = <0x60000 0x100>;
interrupts = <15>;
dma-coherent;
};
ehci@40000 {
compatible = "snps,hsdk-v1.0-ehci", "generic-ehci";
reg = <0x40000 0x100>;
interrupts = <15>;
dma-coherent;
};
mmc@a000 {
@ -212,6 +220,7 @@
clock-names = "biu", "ciu";
interrupts = <12>;
bus-width = <4>;
dma-coherent;
};
};

3
arch/arc/configs/axs101_defconfig
View File

@ -1,5 +1,3 @@
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
@ -63,7 +61,6 @@ CONFIG_MOUSE_PS2_TOUCHKIT=y
CONFIG_MOUSE_SERIAL=y
CONFIG_MOUSE_SYNAPTICS_USB=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DW=y

3
arch/arc/configs/axs103_defconfig
View File

@ -1,5 +1,3 @@
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
@ -64,7 +62,6 @@ CONFIG_MOUSE_PS2_TOUCHKIT=y
CONFIG_MOUSE_SERIAL=y
CONFIG_MOUSE_SYNAPTICS_USB=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DW=y

3
arch/arc/configs/axs103_smp_defconfig
View File

@ -1,5 +1,3 @@
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
@ -65,7 +63,6 @@ CONFIG_MOUSE_PS2_TOUCHKIT=y
CONFIG_MOUSE_SERIAL=y
CONFIG_MOUSE_SYNAPTICS_USB=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DW=y

2
arch/arc/configs/haps_hs_defconfig
View File

@ -1,4 +1,3 @@
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
@ -57,7 +56,6 @@ CONFIG_MOUSE_PS2_TOUCHKIT=y
# CONFIG_SERIO_SERPORT is not set
CONFIG_SERIO_ARC_PS2=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1

2
arch/arc/configs/haps_hs_smp_defconfig
View File

@ -1,4 +1,3 @@
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
@ -60,7 +59,6 @@ CONFIG_MOUSE_PS2_TOUCHKIT=y
# CONFIG_SERIO_SERPORT is not set
CONFIG_SERIO_ARC_PS2=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1

1
arch/arc/configs/hsdk_defconfig
View File

@ -1,4 +1,3 @@
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
CONFIG_SYSVIPC=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_NO_HZ_IDLE=y

1
arch/arc/configs/nps_defconfig
View File

@ -59,7 +59,6 @@ CONFIG_NETCONSOLE=y
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1

2
arch/arc/configs/nsim_700_defconfig
View File

@ -1,5 +1,4 @@
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
@ -44,7 +43,6 @@ CONFIG_LXT_PHY=y
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_ARC=y
CONFIG_SERIAL_ARC_CONSOLE=y
# CONFIG_HW_RANDOM is not set

2
arch/arc/configs/nsim_hs_defconfig
View File

@ -1,5 +1,4 @@
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
@ -45,7 +44,6 @@ CONFIG_DEVTMPFS=y
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_ARC=y
CONFIG_SERIAL_ARC_CONSOLE=y
# CONFIG_HW_RANDOM is not set

2
arch/arc/configs/nsim_hs_smp_defconfig
View File

@ -1,5 +1,4 @@
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_HIGH_RES_TIMERS=y
@ -44,7 +43,6 @@ CONFIG_DEVTMPFS=y
# CONFIG_INPUT_MOUSE is not set
# CONFIG_SERIO is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_ARC=y
CONFIG_SERIAL_ARC_CONSOLE=y
# CONFIG_HW_RANDOM is not set

2
arch/arc/configs/nsimosci_defconfig
View File

@ -1,5 +1,4 @@
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
@ -48,7 +47,6 @@ CONFIG_MOUSE_PS2_TOUCHKIT=y
# CONFIG_SERIO_SERPORT is not set
CONFIG_SERIO_ARC_PS2=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1

2
arch/arc/configs/nsimosci_hs_defconfig
View File

@ -1,5 +1,4 @@
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
@ -47,7 +46,6 @@ CONFIG_MOUSE_PS2_TOUCHKIT=y
# CONFIG_SERIO_SERPORT is not set
CONFIG_SERIO_ARC_PS2=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1

2
arch/arc/configs/nsimosci_hs_smp_defconfig
View File

@ -1,4 +1,3 @@
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
# CONFIG_CROSS_MEMORY_ATTACH is not set
@ -58,7 +57,6 @@ CONFIG_MOUSE_PS2_TOUCHKIT=y
# CONFIG_SERIO_SERPORT is not set
CONFIG_SERIO_ARC_PS2=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1

1
arch/arc/configs/tb10x_defconfig
View File

@ -57,7 +57,6 @@ CONFIG_STMMAC_ETH=y
# CONFIG_SERIO is not set
# CONFIG_VT is not set
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1

2
arch/arc/configs/vdk_hs38_defconfig
View File

@ -1,5 +1,4 @@
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
@ -53,7 +52,6 @@ CONFIG_NATIONAL_PHY=y
CONFIG_MOUSE_PS2_TOUCHKIT=y
CONFIG_SERIO_ARC_PS2=y
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_DW=y

1
arch/arc/configs/vdk_hs38_smp_defconfig
View File

@ -1,5 +1,4 @@
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_DEFAULT_HOSTNAME="ARCLinux"
# CONFIG_CROSS_MEMORY_ATTACH is not set
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y

2
arch/arc/include/asm/atomic.h
View File

@ -84,7 +84,7 @@ static inline int atomic_fetch_##op(int i, atomic_t *v) \
"1: llock %[orig], [%[ctr]] \n" \
" " #asm_op " %[val], %[orig], %[i] \n" \
" scond %[val], [%[ctr]] \n" \
" \n" \
" bnz 1b \n" \
: [val] "=&r" (val), \
[orig] "=&r" (orig) \
: [ctr] "r" (&v->counter), \

13
arch/arc/include/asm/dma-mapping.h Normal file
View File

@ -0,0 +1,13 @@
// SPDX-License-Identifier: GPL-2.0
// (C) 2018 Synopsys, Inc. (www.synopsys.com)
#ifndef ASM_ARC_DMA_MAPPING_H
#define ASM_ARC_DMA_MAPPING_H
#include <asm-generic/dma-mapping.h>
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent);
#define arch_setup_dma_ops arch_setup_dma_ops
#endif

13
arch/arc/kernel/troubleshoot.c
View File

@ -83,9 +83,6 @@ done:
static void show_faulting_vma(unsigned long address, char *buf)
{
struct vm_area_struct *vma;
struct inode *inode;
unsigned long ino = 0;
dev_t dev = 0;
char *nm = buf;
struct mm_struct *active_mm = current->active_mm;
@ -99,12 +96,10 @@ static void show_faulting_vma(unsigned long address, char *buf)
* if the container VMA is not found
*/
if (vma && (vma->vm_start <= address)) {
struct file *file = vma->vm_file;
if (file) {
nm = file_path(file, buf, PAGE_SIZE - 1);
inode = file_inode(vma->vm_file);
dev = inode->i_sb->s_dev;
ino = inode->i_ino;
if (vma->vm_file) {
nm = file_path(vma->vm_file, buf, PAGE_SIZE - 1);
if (IS_ERR(nm))
nm = "?";
}
pr_info(" @off 0x%lx in [%s]\n"
" VMA: 0x%08lx to 0x%08lx\n",

36
arch/arc/mm/cache.c
View File

@ -65,7 +65,7 @@ char *arc_cache_mumbojumbo(int c, char *buf, int len)
n += scnprintf(buf + n, len - n, "Peripherals\t: %#lx%s%s\n",
perip_base,
IS_AVAIL3(ioc_exists, ioc_enable, ", IO-Coherency "));
IS_AVAIL3(ioc_exists, ioc_enable, ", IO-Coherency (per-device) "));
return buf;
}
@ -896,15 +896,6 @@ static void __dma_cache_wback_slc(phys_addr_t start, unsigned long sz)
slc_op(start, sz, OP_FLUSH);
}
/*
* DMA ops for systems with IOC
* IOC hardware snoops all DMA traffic keeping the caches consistent with
* memory - eliding need for any explicit cache maintenance of DMA buffers
*/
static void __dma_cache_wback_inv_ioc(phys_addr_t start, unsigned long sz) {}
static void __dma_cache_inv_ioc(phys_addr_t start, unsigned long sz) {}
static void __dma_cache_wback_ioc(phys_addr_t start, unsigned long sz) {}
/*
* Exported DMA API
*/
@ -1153,6 +1144,19 @@ noinline void __init arc_ioc_setup(void)
{
unsigned int ioc_base, mem_sz;
/*
* As for today we don't support both IOC and ZONE_HIGHMEM enabled
* simultaneously. This happens because as of today IOC aperture covers
* only ZONE_NORMAL (low mem) and any dma transactions outside this
* region won't be HW coherent.
* If we want to use both IOC and ZONE_HIGHMEM we can use
* bounce_buffer to handle dma transactions to HIGHMEM.
* Also it is possible to modify dma_direct cache ops or increase IOC
* aperture size if we are planning to use HIGHMEM without PAE.
*/
if (IS_ENABLED(CONFIG_HIGHMEM))
panic("IOC and HIGHMEM can't be used simultaneously");
/* Flush + invalidate + disable L1 dcache */
__dc_disable();
@ -1264,11 +1268,7 @@ void __init arc_cache_init_master(void)
if (is_isa_arcv2() && ioc_enable)
arc_ioc_setup();
if (is_isa_arcv2() && ioc_enable) {
__dma_cache_wback_inv = __dma_cache_wback_inv_ioc;
__dma_cache_inv = __dma_cache_inv_ioc;
__dma_cache_wback = __dma_cache_wback_ioc;
} else if (is_isa_arcv2() && l2_line_sz && slc_enable) {
if (is_isa_arcv2() && l2_line_sz && slc_enable) {
__dma_cache_wback_inv = __dma_cache_wback_inv_slc;
__dma_cache_inv = __dma_cache_inv_slc;
__dma_cache_wback = __dma_cache_wback_slc;
@ -1277,6 +1277,12 @@ void __init arc_cache_init_master(void)
__dma_cache_inv = __dma_cache_inv_l1;
__dma_cache_wback = __dma_cache_wback_l1;
}
/*
* In case of IOC (say IOC+SLC case), pointers above could still be set
* but end up not being relevant as the first function in chain is not
* called at all for @dma_direct_ops
* arch_sync_dma_for_cpu() -> dma_cache_*() -> __dma_cache_*()
*/
}
void __ref arc_cache_init(void)

82
arch/arc/mm/dma.c
View File

@ -6,20 +6,17 @@
* published by the Free Software Foundation.
*/
/*
* DMA Coherent API Notes
*
* I/O is inherently non-coherent on ARC. So a coherent DMA buffer is
* implemented by accessing it using a kernel virtual address, with
* Cache bit off in the TLB entry.
*
* The default DMA address == Phy address which is 0x8000_0000 based.
*/
#include <linux/dma-noncoherent.h>
#include <asm/cache.h>
#include <asm/cacheflush.h>
/*
* ARCH specific callbacks for generic noncoherent DMA ops (dma/noncoherent.c)
* - hardware IOC not available (or "dma-coherent" not set for device in DT)
* - But still handle both coherent and non-coherent requests from caller
*
* For DMA coherent hardware (IOC) generic code suffices
*/
void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t gfp, unsigned long attrs)
{
@ -27,42 +24,29 @@ void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,
struct page *page;
phys_addr_t paddr;
void *kvaddr;
int need_coh = 1, need_kvaddr = 0;
bool need_coh = !(attrs & DMA_ATTR_NON_CONSISTENT);
/*
* __GFP_HIGHMEM flag is cleared by upper layer functions
* (in include/linux/dma-mapping.h) so we should never get a
* __GFP_HIGHMEM here.
*/
BUG_ON(gfp & __GFP_HIGHMEM);
page = alloc_pages(gfp, order);
if (!page)
return NULL;
/*
* IOC relies on all data (even coherent DMA data) being in cache
* Thus allocate normal cached memory
*
* The gains with IOC are two pronged:
* -For streaming data, elides need for cache maintenance, saving
* cycles in flush code, and bus bandwidth as all the lines of a
* buffer need to be flushed out to memory
* -For coherent data, Read/Write to buffers terminate early in cache
* (vs. always going to memory - thus are faster)
*/
if ((is_isa_arcv2() && ioc_enable) ||
(attrs & DMA_ATTR_NON_CONSISTENT))
need_coh = 0;
/*
* - A coherent buffer needs MMU mapping to enforce non-cachability
* - A highmem page needs a virtual handle (hence MMU mapping)
* independent of cachability
*/
if (PageHighMem(page) || need_coh)
need_kvaddr = 1;
/* This is linear addr (0x8000_0000 based) */
paddr = page_to_phys(page);
*dma_handle = paddr;
/* This is kernel Virtual address (0x7000_0000 based) */
if (need_kvaddr) {
/*
* A coherent buffer needs MMU mapping to enforce non-cachability.
* kvaddr is kernel Virtual address (0x7000_0000 based).
*/
if (need_coh) {
kvaddr = ioremap_nocache(paddr, size);
if (kvaddr == NULL) {
__free_pages(page, order);
@ -93,12 +77,8 @@ void arch_dma_free(struct device *dev, size_t size, void *vaddr,
{
phys_addr_t paddr = dma_handle;
struct page *page = virt_to_page(paddr);
int is_non_coh = 1;
is_non_coh = (attrs & DMA_ATTR_NON_CONSISTENT) ||
(is_isa_arcv2() && ioc_enable);
if (PageHighMem(page) || !is_non_coh)
if (!(attrs & DMA_ATTR_NON_CONSISTENT))
iounmap((void __force __iomem *)vaddr);
__free_pages(page, get_order(size));
@ -185,3 +165,23 @@ void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr,
break;
}
}
/*
* Plug in coherent or noncoherent dma ops
*/
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
const struct iommu_ops *iommu, bool coherent)
{
/*
* IOC hardware snoops all DMA traffic keeping the caches consistent
* with memory - eliding need for any explicit cache maintenance of
* DMA buffers - so we can use dma_direct cache ops.
*/
if (is_isa_arcv2() && ioc_enable && coherent) {
set_dma_ops(dev, &dma_direct_ops);
dev_info(dev, "use dma_direct_ops cache ops\n");
} else {
set_dma_ops(dev, &dma_noncoherent_ops);
dev_info(dev, "use dma_noncoherent_ops cache ops\n");
}
}

1
arch/arm/include/asm/kvm_host.h
View File

@ -223,7 +223,6 @@ int __kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu,
struct kvm_vcpu_events *events);
#define KVM_ARCH_WANT_MMU_NOTIFIER
int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
int kvm_unmap_hva_range(struct kvm *kvm,
unsigned long start, unsigned long end);
void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);

2
arch/arm64/boot/dts/allwinner/sun50i-h6-pine-h64.dts
View File

@ -46,6 +46,7 @@
pinctrl-0 = <&mmc0_pins>;
vmmc-supply = <&reg_cldo1>;
cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;
bus-width = <4>;
status = "okay";
};
@ -56,6 +57,7 @@
vqmmc-supply = <&reg_bldo2>;
non-removable;
cap-mmc-hw-reset;
bus-width = <8>;
status = "okay";
};

4
arch/arm64/include/asm/jump_label.h
View File

@ -28,7 +28,7 @@
static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
{
asm goto("1: nop\n\t"
asm_volatile_goto("1: nop\n\t"
".pushsection __jump_table, \"aw\"\n\t"
".align 3\n\t"
".quad 1b, %l[l_yes], %c0\n\t"
@ -42,7 +42,7 @@ l_yes:
static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
{
asm goto("1: b %l[l_yes]\n\t"
asm_volatile_goto("1: b %l[l_yes]\n\t"
".pushsection __jump_table, \"aw\"\n\t"
".align 3\n\t"
".quad 1b, %l[l_yes], %c0\n\t"

4
arch/arm64/include/asm/kvm_host.h
View File

@ -61,8 +61,7 @@ struct kvm_arch {
u64 vmid_gen;
u32 vmid;
/* 1-level 2nd stage table and lock */
spinlock_t pgd_lock;
/* 1-level 2nd stage table, protected by kvm->mmu_lock */
pgd_t *pgd;
/* VTTBR value associated with above pgd and vmid */
@ -357,7 +356,6 @@ int __kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu,
struct kvm_vcpu_events *events);
#define KVM_ARCH_WANT_MMU_NOTIFIER
int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
int kvm_unmap_hva_range(struct kvm *kvm,
unsigned long start, unsigned long end);
void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);

1
arch/arm64/kernel/Makefile
View File

@ -54,6 +54,7 @@ arm64-obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o \
arm64-obj-$(CONFIG_ARM64_RELOC_TEST) += arm64-reloc-test.o
arm64-reloc-test-y := reloc_test_core.o reloc_test_syms.o
arm64-obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
arm64-obj-$(CONFIG_CRASH_CORE) += crash_core.o
arm64-obj-$(CONFIG_ARM_SDE_INTERFACE) += sdei.o
arm64-obj-$(CONFIG_ARM64_SSBD) += ssbd.o

19
arch/arm64/kernel/crash_core.c Normal file
View File

@ -0,0 +1,19 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) Linaro.
* Copyright (C) Huawei Futurewei Technologies.
*/
#include <linux/crash_core.h>
#include <asm/memory.h>
void arch_crash_save_vmcoreinfo(void)
{
VMCOREINFO_NUMBER(VA_BITS);
/* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */
vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n",
kimage_voffset);
vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n",
PHYS_OFFSET);
vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
}

11
arch/arm64/kernel/machine_kexec.c
View File

@ -358,14 +358,3 @@ void crash_free_reserved_phys_range(unsigned long begin, unsigned long end)
}
}
#endif /* CONFIG_HIBERNATION */
void arch_crash_save_vmcoreinfo(void)
{
VMCOREINFO_NUMBER(VA_BITS);
/* Please note VMCOREINFO_NUMBER() uses "%d", not "%x" */
vmcoreinfo_append_str("NUMBER(kimage_voffset)=0x%llx\n",
kimage_voffset);
vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n",
PHYS_OFFSET);
vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset());
}

9
arch/arm64/kvm/hyp/switch.c
View File

@ -98,8 +98,10 @@ static void activate_traps_vhe(struct kvm_vcpu *vcpu)
val = read_sysreg(cpacr_el1);
val |= CPACR_EL1_TTA;
val &= ~CPACR_EL1_ZEN;
if (!update_fp_enabled(vcpu))
if (!update_fp_enabled(vcpu)) {
val &= ~CPACR_EL1_FPEN;
__activate_traps_fpsimd32(vcpu);
}
write_sysreg(val, cpacr_el1);
@ -114,8 +116,10 @@ static void __hyp_text __activate_traps_nvhe(struct kvm_vcpu *vcpu)
val = CPTR_EL2_DEFAULT;
val |= CPTR_EL2_TTA | CPTR_EL2_TZ;
if (!update_fp_enabled(vcpu))
if (!update_fp_enabled(vcpu)) {
val |= CPTR_EL2_TFP;
__activate_traps_fpsimd32(vcpu);
}
write_sysreg(val, cptr_el2);
}
@ -129,7 +133,6 @@ static void __hyp_text __activate_traps(struct kvm_vcpu *vcpu)
if (cpus_have_const_cap(ARM64_HAS_RAS_EXTN) && (hcr & HCR_VSE))
write_sysreg_s(vcpu->arch.vsesr_el2, SYS_VSESR_EL2);
__activate_traps_fpsimd32(vcpu);
if (has_vhe())
activate_traps_vhe(vcpu);
else

10
arch/arm64/mm/mmu.c
View File

@ -985,8 +985,9 @@ int pmd_free_pte_page(pmd_t *pmdp, unsigned long addr)
pmd = READ_ONCE(*pmdp);
/* No-op for empty entry and WARN_ON for valid entry */
if (!pmd_present(pmd) || !pmd_table(pmd)) {
if (!pmd_present(pmd))
return 1;
if (!pmd_table(pmd)) {
VM_WARN_ON(!pmd_table(pmd));
return 1;
}
@ -1007,8 +1008,9 @@ int pud_free_pmd_page(pud_t *pudp, unsigned long addr)
pud = READ_ONCE(*pudp);
/* No-op for empty entry and WARN_ON for valid entry */
if (!pud_present(pud) || !pud_table(pud)) {
if (!pud_present(pud))
return 1;
if (!pud_table(pud)) {
VM_WARN_ON(!pud_table(pud));
return 1;
}

4
arch/hexagon/include/asm/bitops.h
View File

@ -211,7 +211,7 @@ static inline long ffz(int x)
* This is defined the same way as ffs.
* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
*/
static inline long fls(int x)
static inline int fls(int x)
{
int r;
@ -232,7 +232,7 @@ static inline long fls(int x)
* the libc and compiler builtin ffs routines, therefore
* differs in spirit from the above ffz (man ffs).
*/
static inline long ffs(int x)
static inline int ffs(int x)
{
int r;

2
arch/hexagon/kernel/dma.c
View File

@ -60,7 +60,7 @@ static void *hexagon_dma_alloc_coherent(struct device *dev, size_t size,
panic("Can't create %s() memory pool!", __func__);
else
gen_pool_add(coherent_pool,
pfn_to_virt(max_low_pfn),
(unsigned long)pfn_to_virt(max_low_pfn),
hexagon_coherent_pool_size, -1);
}

2
arch/m68k/mm/mcfmmu.c
View File

@ -172,7 +172,7 @@ void __init cf_bootmem_alloc(void)
high_memory = (void *)_ramend;
/* Reserve kernel text/data/bss */
memblock_reserve(memstart, memstart - _rambase);
memblock_reserve(_rambase, memstart - _rambase);
m68k_virt_to_node_shift = fls(_ramend - 1) - 6;
module_fixup(NULL, __start_fixup, __stop_fixup);

1
arch/mips/include/asm/kvm_host.h
View File

@ -931,7 +931,6 @@ enum kvm_mips_fault_result kvm_trap_emul_gva_fault(struct kvm_vcpu *vcpu,
bool write);
#define KVM_ARCH_WANT_MMU_NOTIFIER
int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
int kvm_unmap_hva_range(struct kvm *kvm,
unsigned long start, unsigned long end);
void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);

1
arch/mips/include/asm/mach-lantiq/xway/xway_dma.h
View File

@ -40,6 +40,7 @@ struct ltq_dma_channel {
int desc; /* the current descriptor */
struct ltq_dma_desc *desc_base; /* the descriptor base */
int phys; /* physical addr */
struct device *dev;
};
enum {

20
arch/mips/kernel/vdso.c
View File

@ -13,6 +13,7 @@
#include <linux/err.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/slab.h>
@ -20,6 +21,7 @@
#include <asm/abi.h>
#include <asm/mips-cps.h>
#include <asm/page.h>
#include <asm/vdso.h>
/* Kernel-provided data used by the VDSO. */
@ -128,12 +130,30 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
vvar_size = gic_size + PAGE_SIZE;
size = vvar_size + image->size;
/*
* Find a region that's large enough for us to perform the
* colour-matching alignment below.
*/
if (cpu_has_dc_aliases)
size += shm_align_mask + 1;
base = get_unmapped_area(NULL, 0, size, 0, 0);
if (IS_ERR_VALUE(base)) {
ret = base;
goto out;
}
/*
* If we suffer from dcache aliasing, ensure that the VDSO data page
* mapping is coloured the same as the kernel's mapping of that memory.
* This ensures that when the kernel updates the VDSO data userland
* will observe it without requiring cache invalidations.
*/
if (cpu_has_dc_aliases) {
base = __ALIGN_MASK(base, shm_align_mask);
base += ((unsigned long)&vdso_data - gic_size) & shm_align_mask;
}
data_addr = base + gic_size;
vdso_addr = data_addr + PAGE_SIZE;

10
arch/mips/kvm/mmu.c
View File

@ -512,16 +512,6 @@ static int kvm_unmap_hva_handler(struct kvm *kvm, gfn_t gfn, gfn_t gfn_end,
return 1;
}
int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
{
unsigned long end = hva + PAGE_SIZE;
handle_hva_to_gpa(kvm, hva, end, &kvm_unmap_hva_handler, NULL);
kvm_mips_callbacks->flush_shadow_all(kvm);
return 0;
}
int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
{
handle_hva_to_gpa(kvm, start, end, &kvm_unmap_hva_handler, NULL);

4
arch/mips/lantiq/xway/dma.c
View File

@ -130,7 +130,7 @@ ltq_dma_alloc(struct ltq_dma_channel *ch)
unsigned long flags;
ch->desc = 0;
ch->desc_base = dma_zalloc_coherent(NULL,
ch->desc_base = dma_zalloc_coherent(ch->dev,
LTQ_DESC_NUM * LTQ_DESC_SIZE,
&ch->phys, GFP_ATOMIC);
@ -182,7 +182,7 @@ ltq_dma_free(struct ltq_dma_channel *ch)
if (!ch->desc_base)
return;
ltq_dma_close(ch);
dma_free_coherent(NULL, LTQ_DESC_NUM * LTQ_DESC_SIZE,
dma_free_coherent(ch->dev, LTQ_DESC_NUM * LTQ_DESC_SIZE,
ch->desc_base, ch->phys);
}
EXPORT_SYMBOL_GPL(ltq_dma_free);

4
arch/nds32/Kconfig
View File

@ -40,6 +40,10 @@ config NDS32
select NO_IOPORT_MAP
select RTC_LIB
select THREAD_INFO_IN_TASK
select HAVE_FUNCTION_TRACER
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_DYNAMIC_FTRACE
help
Andes(nds32) Linux support.

4
arch/nds32/Makefile
View File

@ -5,6 +5,10 @@ KBUILD_DEFCONFIG := defconfig
comma = ,
ifdef CONFIG_FUNCTION_TRACER
arch-y += -malways-save-lp -mno-relax
endif
KBUILD_CFLAGS += $(call cc-option, -mno-sched-prolog-epilog)
KBUILD_CFLAGS += -mcmodel=large

4
arch/nds32/include/asm/elf.h
View File

@ -121,9 +121,9 @@ struct elf32_hdr;
*/
#define ELF_CLASS ELFCLASS32
#ifdef __NDS32_EB__
#define ELF_DATA ELFDATA2MSB;
#define ELF_DATA ELFDATA2MSB
#else
#define ELF_DATA ELFDATA2LSB;
#define ELF_DATA ELFDATA2LSB
#endif
#define ELF_ARCH EM_NDS32
#define USE_ELF_CORE_DUMP

46
arch/nds32/include/asm/ftrace.h Normal file
View File

@ -0,0 +1,46 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_NDS32_FTRACE_H
#define __ASM_NDS32_FTRACE_H
#ifdef CONFIG_FUNCTION_TRACER
#define HAVE_FUNCTION_GRAPH_FP_TEST
#define MCOUNT_ADDR ((unsigned long)(_mcount))
/* mcount call is composed of three instructions:
* sethi + ori + jral
*/
#define MCOUNT_INSN_SIZE 12
extern void _mcount(unsigned long parent_ip);
#ifdef CONFIG_DYNAMIC_FTRACE
#define FTRACE_ADDR ((unsigned long)_ftrace_caller)
#ifdef __NDS32_EL__
#define INSN_NOP 0x09000040
#define INSN_SIZE(insn) (((insn & 0x00000080) == 0) ? 4 : 2)
#define IS_SETHI(insn) ((insn & 0x000000fe) == 0x00000046)
#define ENDIAN_CONVERT(insn) be32_to_cpu(insn)
#else /* __NDS32_EB__ */
#define INSN_NOP 0x40000009
#define INSN_SIZE(insn) (((insn & 0x80000000) == 0) ? 4 : 2)
#define IS_SETHI(insn) ((insn & 0xfe000000) == 0x46000000)
#define ENDIAN_CONVERT(insn) (insn)
#endif
extern void _ftrace_caller(unsigned long parent_ip);
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
return addr;
}
struct dyn_arch_ftrace {
};
#endif /* CONFIG_DYNAMIC_FTRACE */
#endif /* CONFIG_FUNCTION_TRACER */
#endif /* __ASM_NDS32_FTRACE_H */

1
arch/nds32/include/asm/nds32.h
View File

@ -17,6 +17,7 @@
#else
#define FP_OFFSET (-2)
#endif
#define LP_OFFSET (-1)
extern void __init early_trap_init(void);
static inline void GIE_ENABLE(void)

229
arch/nds32/include/asm/uaccess.h
View File

@ -38,7 +38,7 @@ struct exception_table_entry {
extern int fixup_exception(struct pt_regs *regs);
#define KERNEL_DS ((mm_segment_t) { ~0UL })
#define USER_DS ((mm_segment_t) {TASK_SIZE - 1})
#define USER_DS ((mm_segment_t) {TASK_SIZE - 1})
#define get_ds() (KERNEL_DS)
#define get_fs() (current_thread_info()->addr_limit)
@ -49,11 +49,11 @@ static inline void set_fs(mm_segment_t fs)
current_thread_info()->addr_limit = fs;
}
#define segment_eq(a, b) ((a) == (b))
#define segment_eq(a, b) ((a) == (b))
#define __range_ok(addr, size) (size <= get_fs() && addr <= (get_fs() -size))
#define access_ok(type, addr, size) \
#define access_ok(type, addr, size) \
__range_ok((unsigned long)addr, (unsigned long)size)
/*
* Single-value transfer routines. They automatically use the right
@ -75,70 +75,73 @@ static inline void set_fs(mm_segment_t fs)
* versions are void (ie, don't return a value as such).
*/
#define get_user(x,p) \
({ \
long __e = -EFAULT; \
if(likely(access_ok(VERIFY_READ, p, sizeof(*p)))) { \
__e = __get_user(x,p); \
} else \
x = 0; \
__e; \
})
#define __get_user(x,ptr) \
#define get_user __get_user \
#define __get_user(x, ptr) \
({ \
long __gu_err = 0; \
__get_user_err((x),(ptr),__gu_err); \
__get_user_check((x), (ptr), __gu_err); \
__gu_err; \
})
#define __get_user_error(x,ptr,err) \
#define __get_user_error(x, ptr, err) \
({ \
__get_user_err((x),(ptr),err); \
(void) 0; \
__get_user_check((x), (ptr), (err)); \
(void)0; \
})
#define __get_user_err(x,ptr,err) \
#define __get_user_check(x, ptr, err) \
({ \
const __typeof__(*(ptr)) __user *__p = (ptr); \
might_fault(); \
if (access_ok(VERIFY_READ, __p, sizeof(*__p))) { \
__get_user_err((x), __p, (err)); \
} else { \
(x) = 0; (err) = -EFAULT; \
} \
})
#define __get_user_err(x, ptr, err) \
do { \
unsigned long __gu_addr = (unsigned long)(ptr); \
unsigned long __gu_val; \
__chk_user_ptr(ptr); \
switch (sizeof(*(ptr))) { \
case 1: \
__get_user_asm("lbi",__gu_val,__gu_addr,err); \
__get_user_asm("lbi", __gu_val, (ptr), (err)); \
break; \
case 2: \
__get_user_asm("lhi",__gu_val,__gu_addr,err); \
__get_user_asm("lhi", __gu_val, (ptr), (err)); \
break; \
case 4: \
__get_user_asm("lwi",__gu_val,__gu_addr,err); \
__get_user_asm("lwi", __gu_val, (ptr), (err)); \
break; \
case 8: \
__get_user_asm_dword(__gu_val,__gu_addr,err); \
__get_user_asm_dword(__gu_val, (ptr), (err)); \
break; \
default: \
BUILD_BUG(); \
break; \
} \
(x) = (__typeof__(*(ptr)))__gu_val; \
(x) = (__force __typeof__(*(ptr)))__gu_val; \
} while (0)
#define __get_user_asm(inst,x,addr,err) \
asm volatile( \
"1: "inst" %1,[%2]\n" \
"2:\n" \
" .section .fixup,\"ax\"\n" \
" .align 2\n" \
"3: move %0, %3\n" \
" move %1, #0\n" \
" b 2b\n" \
" .previous\n" \
" .section __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 3b\n" \
" .previous" \
: "+r" (err), "=&r" (x) \
: "r" (addr), "i" (-EFAULT) \
: "cc")
#define __get_user_asm(inst, x, addr, err) \
__asm__ __volatile__ ( \
"1: "inst" %1,[%2]\n" \
"2:\n" \
" .section .fixup,\"ax\"\n" \
" .align 2\n" \
"3: move %0, %3\n" \
" move %1, #0\n" \
" b 2b\n" \
" .previous\n" \
" .section __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 3b\n" \
" .previous" \
: "+r" (err), "=&r" (x) \
: "r" (addr), "i" (-EFAULT) \
: "cc")
#ifdef __NDS32_EB__
#define __gu_reg_oper0 "%H1"
@ -149,61 +152,66 @@ do { \
#endif
#define __get_user_asm_dword(x, addr, err) \
asm volatile( \
"\n1:\tlwi " __gu_reg_oper0 ",[%2]\n" \
"\n2:\tlwi " __gu_reg_oper1 ",[%2+4]\n" \
"3:\n" \
" .section .fixup,\"ax\"\n" \
" .align 2\n" \
"4: move %0, %3\n" \
" b 3b\n" \
" .previous\n" \
" .section __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 4b\n" \
" .long 2b, 4b\n" \
" .previous" \
: "+r"(err), "=&r"(x) \
: "r"(addr), "i"(-EFAULT) \
: "cc")
#define put_user(x,p) \
({ \
long __e = -EFAULT; \
if(likely(access_ok(VERIFY_WRITE, p, sizeof(*p)))) { \
__e = __put_user(x,p); \
} \
__e; \
})
#define __put_user(x,ptr) \
__asm__ __volatile__ ( \
"\n1:\tlwi " __gu_reg_oper0 ",[%2]\n" \
"\n2:\tlwi " __gu_reg_oper1 ",[%2+4]\n" \
"3:\n" \
" .section .fixup,\"ax\"\n" \
" .align 2\n" \
"4: move %0, %3\n" \
" b 3b\n" \
" .previous\n" \
" .section __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 4b\n" \
" .long 2b, 4b\n" \
" .previous" \
: "+r"(err), "=&r"(x) \
: "r"(addr), "i"(-EFAULT) \
: "cc")
#define put_user __put_user \
#define __put_user(x, ptr) \
({ \
long __pu_err = 0; \
__put_user_err((x),(ptr),__pu_err); \
__put_user_err((x), (ptr), __pu_err); \
__pu_err; \
})
#define __put_user_error(x,ptr,err) \
#define __put_user_error(x, ptr, err) \
({ \
__put_user_err((x),(ptr),err); \
(void) 0; \
__put_user_err((x), (ptr), (err)); \
(void)0; \
})
#define __put_user_err(x,ptr,err) \
#define __put_user_check(x, ptr, err) \
({ \
__typeof__(*(ptr)) __user *__p = (ptr); \
might_fault(); \
if (access_ok(VERIFY_WRITE, __p, sizeof(*__p))) { \
__put_user_err((x), __p, (err)); \
} else { \
(err) = -EFAULT; \
} \
})
#define __put_user_err(x, ptr, err) \
do { \
unsigned long __pu_addr = (unsigned long)(ptr); \
__typeof__(*(ptr)) __pu_val = (x); \
__chk_user_ptr(ptr); \
switch (sizeof(*(ptr))) { \
case 1: \
__put_user_asm("sbi",__pu_val,__pu_addr,err); \
__put_user_asm("sbi", __pu_val, (ptr), (err)); \
break; \
case 2: \
__put_user_asm("shi",__pu_val,__pu_addr,err); \
__put_user_asm("shi", __pu_val, (ptr), (err)); \
break; \
case 4: \
__put_user_asm("swi",__pu_val,__pu_addr,err); \
__put_user_asm("swi", __pu_val, (ptr), (err)); \
break; \
case 8: \
__put_user_asm_dword(__pu_val,__pu_addr,err); \
__put_user_asm_dword(__pu_val, (ptr), (err)); \
break; \
default: \
BUILD_BUG(); \
@ -211,22 +219,22 @@ do { \
} \
} while (0)
#define __put_user_asm(inst,x,addr,err) \
asm volatile( \
"1: "inst" %1,[%2]\n" \
"2:\n" \
" .section .fixup,\"ax\"\n" \
" .align 2\n" \
"3: move %0, %3\n" \
" b 2b\n" \
" .previous\n" \
" .section __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 3b\n" \
" .previous" \
: "+r" (err) \
: "r" (x), "r" (addr), "i" (-EFAULT) \
: "cc")
#define __put_user_asm(inst, x, addr, err) \
__asm__ __volatile__ ( \
"1: "inst" %1,[%2]\n" \
"2:\n" \
" .section .fixup,\"ax\"\n" \
" .align 2\n" \
"3: move %0, %3\n" \
" b 2b\n" \
" .previous\n" \
" .section __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 3b\n" \
" .previous" \
: "+r" (err) \
: "r" (x), "r" (addr), "i" (-EFAULT) \
: "cc")
#ifdef __NDS32_EB__
#define __pu_reg_oper0 "%H2"
@ -237,23 +245,24 @@ do { \
#endif
#define __put_user_asm_dword(x, addr, err) \
asm volatile( \
"\n1:\tswi " __pu_reg_oper0 ",[%1]\n" \
"\n2:\tswi " __pu_reg_oper1 ",[%1+4]\n" \
"3:\n" \
" .section .fixup,\"ax\"\n" \
" .align 2\n" \
"4: move %0, %3\n" \
" b 3b\n" \
" .previous\n" \
" .section __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 4b\n" \
" .long 2b, 4b\n" \
" .previous" \
: "+r"(err) \
: "r"(addr), "r"(x), "i"(-EFAULT) \
: "cc")
__asm__ __volatile__ ( \
"\n1:\tswi " __pu_reg_oper0 ",[%1]\n" \
"\n2:\tswi " __pu_reg_oper1 ",[%1+4]\n" \
"3:\n" \
" .section .fixup,\"ax\"\n" \
" .align 2\n" \
"4: move %0, %3\n" \
" b 3b\n" \
" .previous\n" \
" .section __ex_table,\"a\"\n" \
" .align 3\n" \
" .long 1b, 4b\n" \
" .long 2b, 4b\n" \
" .previous" \
: "+r"(err) \
: "r"(addr), "r"(x), "i"(-EFAULT) \
: "cc")
extern unsigned long __arch_clear_user(void __user * addr, unsigned long n);
extern long strncpy_from_user(char *dest, const char __user * src, long count);
extern __must_check long strlen_user(const char __user * str);

6
arch/nds32/kernel/Makefile
View File

@ -21,3 +21,9 @@ extra-y := head.o vmlinux.lds
obj-y += vdso/
obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o
ifdef CONFIG_FUNCTION_TRACER
CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
endif

3
arch/nds32/kernel/atl2c.c
View File

@ -9,7 +9,8 @@
void __iomem *atl2c_base;
static const struct of_device_id atl2c_ids[] __initconst = {
{.compatible = "andestech,atl2c",}
{.compatible = "andestech,atl2c",},
{}
};
static int __init atl2c_of_init(void)

2
arch/nds32/kernel/ex-entry.S
View File

@ -118,7 +118,7 @@ common_exception_handler:
/* interrupt */
2:
#ifdef CONFIG_TRACE_IRQFLAGS
jal trace_hardirqs_off
jal __trace_hardirqs_off
#endif
move $r0, $sp
sethi $lp, hi20(ret_from_intr)

4
arch/nds32/kernel/ex-exit.S
View File

@ -138,8 +138,8 @@ no_work_pending:
#ifdef CONFIG_TRACE_IRQFLAGS
lwi $p0, [$sp+(#IPSW_OFFSET)]
andi $p0, $p0, #0x1
la $r10, trace_hardirqs_off
la $r9, trace_hardirqs_on
la $r10, __trace_hardirqs_off
la $r9, __trace_hardirqs_on
cmovz $r9, $p0, $r10
jral $r9
#endif

309
arch/nds32/kernel/ftrace.c Normal file
View File

@ -0,0 +1,309 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/ftrace.h>
#include <linux/uaccess.h>
#include <asm/cacheflush.h>
#ifndef CONFIG_DYNAMIC_FTRACE
extern void (*ftrace_trace_function)(unsigned long, unsigned long,
struct ftrace_ops*, struct pt_regs*);
extern int ftrace_graph_entry_stub(struct ftrace_graph_ent *trace);
extern void ftrace_graph_caller(void);
noinline void __naked ftrace_stub(unsigned long ip, unsigned long parent_ip,
struct ftrace_ops *op, struct pt_regs *regs)
{
__asm__ (""); /* avoid to optimize as pure function */
}
noinline void _mcount(unsigned long parent_ip)
{
/* save all state by the compiler prologue */
unsigned long ip = (unsigned long)__builtin_return_address(0);
if (ftrace_trace_function != ftrace_stub)
ftrace_trace_function(ip - MCOUNT_INSN_SIZE, parent_ip,
NULL, NULL);
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
if (ftrace_graph_return != (trace_func_graph_ret_t)ftrace_stub
|| ftrace_graph_entry != ftrace_graph_entry_stub)
ftrace_graph_caller();
#endif
/* restore all state by the compiler epilogue */
}
EXPORT_SYMBOL(_mcount);
#else /* CONFIG_DYNAMIC_FTRACE */
noinline void __naked ftrace_stub(unsigned long ip, unsigned long parent_ip,
struct ftrace_ops *op, struct pt_regs *regs)
{
__asm__ (""); /* avoid to optimize as pure function */
}
noinline void __naked _mcount(unsigned long parent_ip)
{
__asm__ (""); /* avoid to optimize as pure function */
}
EXPORT_SYMBOL(_mcount);
#define XSTR(s) STR(s)
#define STR(s) #s
void _ftrace_caller(unsigned long parent_ip)
{
/* save all state needed by the compiler prologue */
/*
* prepare arguments for real tracing function
* first arg : __builtin_return_address(0) - MCOUNT_INSN_SIZE
* second arg : parent_ip
*/
__asm__ __volatile__ (
"move $r1, %0 \n\t"
"addi $r0, %1, #-" XSTR(MCOUNT_INSN_SIZE) "\n\t"
:
: "r" (parent_ip), "r" (__builtin_return_address(0)));
/* a placeholder for the call to a real tracing function */
__asm__ __volatile__ (
"ftrace_call: \n\t"
"nop \n\t"
"nop \n\t"
"nop \n\t");
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
/* a placeholder for the call to ftrace_graph_caller */
__asm__ __volatile__ (
"ftrace_graph_call: \n\t"
"nop \n\t"
"nop \n\t"
"nop \n\t");
#endif
/* restore all state needed by the compiler epilogue */
}
int __init ftrace_dyn_arch_init(void)
{
return 0;
}
int ftrace_arch_code_modify_prepare(void)
{
set_all_modules_text_rw();
return 0;
}
int ftrace_arch_code_modify_post_process(void)
{
set_all_modules_text_ro();
return 0;
}
static unsigned long gen_sethi_insn(unsigned long addr)
{
unsigned long opcode = 0x46000000;
unsigned long imm = addr >> 12;
unsigned long rt_num = 0xf << 20;
return ENDIAN_CONVERT(opcode | rt_num | imm);
}
static unsigned long gen_ori_insn(unsigned long addr)
{
unsigned long opcode = 0x58000000;
unsigned long imm = addr & 0x0000fff;
unsigned long rt_num = 0xf << 20;
unsigned long ra_num = 0xf << 15;
return ENDIAN_CONVERT(opcode | rt_num | ra_num | imm);
}
static unsigned long gen_jral_insn(unsigned long addr)
{
unsigned long opcode = 0x4a000001;
unsigned long rt_num = 0x1e << 20;
unsigned long rb_num = 0xf << 10;
return ENDIAN_CONVERT(opcode | rt_num | rb_num);
}
static void ftrace_gen_call_insn(unsigned long *call_insns,
unsigned long addr)
{
call_insns[0] = gen_sethi_insn(addr); /* sethi $r15, imm20u */
call_insns[1] = gen_ori_insn(addr); /* ori $r15, $r15, imm15u */
call_insns[2] = gen_jral_insn(addr); /* jral $lp, $r15 */
}
static int __ftrace_modify_code(unsigned long pc, unsigned long *old_insn,
unsigned long *new_insn, bool validate)
{
unsigned long orig_insn[3];
if (validate) {
if (probe_kernel_read(orig_insn, (void *)pc, MCOUNT_INSN_SIZE))
return -EFAULT;
if (memcmp(orig_insn, old_insn, MCOUNT_INSN_SIZE))
return -EINVAL;
}
if (probe_kernel_write((void *)pc, new_insn, MCOUNT_INSN_SIZE))
return -EPERM;
return 0;
}
static int ftrace_modify_code(unsigned long pc, unsigned long *old_insn,
unsigned long *new_insn, bool validate)
{
int ret;
ret = __ftrace_modify_code(pc, old_insn, new_insn, validate);
if (ret)
return ret;
flush_icache_range(pc, pc + MCOUNT_INSN_SIZE);
return ret;
}
int ftrace_update_ftrace_func(ftrace_func_t func)
{
unsigned long pc = (unsigned long)&ftrace_call;
unsigned long old_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
unsigned long new_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
if (func != ftrace_stub)
ftrace_gen_call_insn(new_insn, (unsigned long)func);
return ftrace_modify_code(pc, old_insn, new_insn, false);
}
int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
{
unsigned long pc = rec->ip;
unsigned long nop_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
unsigned long call_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
ftrace_gen_call_insn(call_insn, addr);
return ftrace_modify_code(pc, nop_insn, call_insn, true);
}
int ftrace_make_nop(struct module *mod, struct dyn_ftrace *rec,
unsigned long addr)
{
unsigned long pc = rec->ip;
unsigned long nop_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
unsigned long call_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
ftrace_gen_call_insn(call_insn, addr);
return ftrace_modify_code(pc, call_insn, nop_insn, true);
}
#endif /* CONFIG_DYNAMIC_FTRACE */
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr,
unsigned long frame_pointer)
{
unsigned long return_hooker = (unsigned long)&return_to_handler;
struct ftrace_graph_ent trace;
unsigned long old;
int err;
if (unlikely(atomic_read(&current->tracing_graph_pause)))
return;
old = *parent;
trace.func = self_addr;
trace.depth = current->curr_ret_stack + 1;
/* Only trace if the calling function expects to */
if (!ftrace_graph_entry(&trace))
return;
err = ftrace_push_return_trace(old, self_addr, &trace.depth,
frame_pointer, NULL);
if (err == -EBUSY)
return;
*parent = return_hooker;
}
noinline void ftrace_graph_caller(void)
{
unsigned long *parent_ip =
(unsigned long *)(__builtin_frame_address(2) - 4);
unsigned long selfpc =
(unsigned long)(__builtin_return_address(1) - MCOUNT_INSN_SIZE);
unsigned long frame_pointer =
(unsigned long)__builtin_frame_address(3);
prepare_ftrace_return(parent_ip, selfpc, frame_pointer);
}
extern unsigned long ftrace_return_to_handler(unsigned long frame_pointer);
void __naked return_to_handler(void)
{
__asm__ __volatile__ (
/* save state needed by the ABI */
"smw.adm $r0,[$sp],$r1,#0x0 \n\t"
/* get original return address */
"move $r0, $fp \n\t"
"bal ftrace_return_to_handler\n\t"
"move $lp, $r0 \n\t"
/* restore state nedded by the ABI */
"lmw.bim $r0,[$sp],$r1,#0x0 \n\t");
}
#ifdef CONFIG_DYNAMIC_FTRACE
extern unsigned long ftrace_graph_call;
static int ftrace_modify_graph_caller(bool enable)
{
unsigned long pc = (unsigned long)&ftrace_graph_call;
unsigned long nop_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
unsigned long call_insn[3] = {INSN_NOP, INSN_NOP, INSN_NOP};
ftrace_gen_call_insn(call_insn, (unsigned long)ftrace_graph_caller);
if (enable)
return ftrace_modify_code(pc, nop_insn, call_insn, true);
else
return ftrace_modify_code(pc, call_insn, nop_insn, true);
}
int ftrace_enable_ftrace_graph_caller(void)
{
return ftrace_modify_graph_caller(true);
}
int ftrace_disable_ftrace_graph_caller(void)
{
return ftrace_modify_graph_caller(false);
}
#endif /* CONFIG_DYNAMIC_FTRACE */
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
#ifdef CONFIG_TRACE_IRQFLAGS
noinline void __trace_hardirqs_off(void)
{
trace_hardirqs_off();
}
noinline void __trace_hardirqs_on(void)
{
trace_hardirqs_on();
}
#endif /* CONFIG_TRACE_IRQFLAGS */

4
arch/nds32/kernel/module.c
View File

@ -40,7 +40,7 @@ void do_reloc16(unsigned int val, unsigned int *loc, unsigned int val_mask,
tmp2 = tmp & loc_mask;
if (partial_in_place) {
tmp &= (!loc_mask);
tmp &= (~loc_mask);
tmp =
tmp2 | ((tmp + ((val & val_mask) >> val_shift)) & val_mask);
} else {
@ -70,7 +70,7 @@ void do_reloc32(unsigned int val, unsigned int *loc, unsigned int val_mask,
tmp2 = tmp & loc_mask;
if (partial_in_place) {
tmp &= (!loc_mask);
tmp &= (~loc_mask);
tmp =
tmp2 | ((tmp + ((val & val_mask) >> val_shift)) & val_mask);
} else {

6
arch/nds32/kernel/stacktrace.c
View File

@ -4,6 +4,7 @@
#include <linux/sched/debug.h>
#include <linux/sched/task_stack.h>
#include <linux/stacktrace.h>
#include <linux/ftrace.h>
void save_stack_trace(struct stack_trace *trace)
{
@ -16,6 +17,7 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
unsigned long *fpn;
int skip = trace->skip;
int savesched;
int graph_idx = 0;
if (tsk == current) {
__asm__ __volatile__("\tori\t%0, $fp, #0\n":"=r"(fpn));
@ -29,10 +31,12 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
&& (fpn >= (unsigned long *)TASK_SIZE)) {
unsigned long lpp, fpp;
lpp = fpn[-1];
lpp = fpn[LP_OFFSET];
fpp = fpn[FP_OFFSET];
if (!__kernel_text_address(lpp))
break;
else
lpp = ftrace_graph_ret_addr(tsk, &graph_idx, lpp, NULL);
if (savesched || !in_sched_functions(lpp)) {
if (skip) {

42
arch/nds32/kernel/traps.c
View File

@ -8,6 +8,7 @@
#include <linux/kdebug.h>
#include <linux/sched/task_stack.h>
#include <linux/uaccess.h>
#include <linux/ftrace.h>
#include <asm/proc-fns.h>
#include <asm/unistd.h>
@ -94,28 +95,6 @@ static void dump_instr(struct pt_regs *regs)
set_fs(fs);
}
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
#include <linux/ftrace.h>
static void
get_real_ret_addr(unsigned long *addr, struct task_struct *tsk, int *graph)
{
if (*addr == (unsigned long)return_to_handler) {
int index = tsk->curr_ret_stack;
if (tsk->ret_stack && index >= *graph) {
index -= *graph;
*addr = tsk->ret_stack[index].ret;
(*graph)++;
}
}
}
#else
static inline void
get_real_ret_addr(unsigned long *addr, struct task_struct *tsk, int *graph)
{
}
#endif
#define LOOP_TIMES (100)
static void __dump(struct task_struct *tsk, unsigned long *base_reg)
{
@ -126,7 +105,8 @@ static void __dump(struct task_struct *tsk, unsigned long *base_reg)
while (!kstack_end(base_reg)) {
ret_addr = *base_reg++;
if (__kernel_text_address(ret_addr)) {
get_real_ret_addr(&ret_addr, tsk, &graph);
ret_addr = ftrace_graph_ret_addr(
tsk, &graph, ret_addr, NULL);
print_ip_sym(ret_addr);
}
if (--cnt < 0)
@ -137,15 +117,12 @@ static void __dump(struct task_struct *tsk, unsigned long *base_reg)
!((unsigned long)base_reg & 0x3) &&
((unsigned long)base_reg >= TASK_SIZE)) {
unsigned long next_fp;
#if !defined(NDS32_ABI_2)
ret_addr = base_reg[0];
next_fp = base_reg[1];
#else
ret_addr = base_reg[-1];
ret_addr = base_reg[LP_OFFSET];
next_fp = base_reg[FP_OFFSET];
#endif
if (__kernel_text_address(ret_addr)) {
get_real_ret_addr(&ret_addr, tsk, &graph);
ret_addr = ftrace_graph_ret_addr(
tsk, &graph, ret_addr, NULL);
print_ip_sym(ret_addr);
}
if (--cnt < 0)
@ -196,11 +173,10 @@ void die(const char *str, struct pt_regs *regs, int err)
pr_emerg("CPU: %i\n", smp_processor_id());
show_regs(regs);
pr_emerg("Process %s (pid: %d, stack limit = 0x%p)\n",
tsk->comm, tsk->pid, task_thread_info(tsk) + 1);
tsk->comm, tsk->pid, end_of_stack(tsk));
if (!user_mode(regs) || in_interrupt()) {
dump_mem("Stack: ", regs->sp,
THREAD_SIZE + (unsigned long)task_thread_info(tsk));
dump_mem("Stack: ", regs->sp, (regs->sp + PAGE_SIZE) & PAGE_MASK);
dump_instr(regs);
dump_stack();
}

12
arch/nds32/kernel/vmlinux.lds.S
View File

@ -13,14 +13,26 @@ OUTPUT_ARCH(nds32)
ENTRY(_stext_lma)
jiffies = jiffies_64;
#if defined(CONFIG_GCOV_KERNEL)
#define NDS32_EXIT_KEEP(x) x
#else
#define NDS32_EXIT_KEEP(x)
#endif
SECTIONS
{
_stext_lma = TEXTADDR - LOAD_OFFSET;
. = TEXTADDR;
__init_begin = .;
HEAD_TEXT_SECTION
.exit.text : {
NDS32_EXIT_KEEP(EXIT_TEXT)
}
INIT_TEXT_SECTION(PAGE_SIZE)
INIT_DATA_SECTION(16)
.exit.data : {
NDS32_EXIT_KEEP(EXIT_DATA)
}
PERCPU_SECTION(L1_CACHE_BYTES)
__init_end = .;

2
arch/powerpc/kvm/book3s_64_mmu_hv.c
View File

@ -358,7 +358,7 @@ static int kvmppc_mmu_book3s_64_hv_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
unsigned long pp, key;
unsigned long v, orig_v, gr;
__be64 *hptep;
int index;
long int index;
int virtmode = vcpu->arch.shregs.msr & (data ? MSR_DR : MSR_IR);
if (kvm_is_radix(vcpu->kvm))

6
arch/powerpc/kvm/book3s_64_mmu_radix.c
View File

@ -725,10 +725,10 @@ int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
gpa, shift);
kvmppc_radix_tlbie_page(kvm, gpa, shift);
if ((old & _PAGE_DIRTY) && memslot->dirty_bitmap) {
unsigned long npages = 1;
unsigned long psize = PAGE_SIZE;
if (shift)
npages = 1ul << (shift - PAGE_SHIFT);
kvmppc_update_dirty_map(memslot, gfn, npages);
psize = 1ul << shift;
kvmppc_update_dirty_map(memslot, gfn, psize);
}
}
return 0;

7
arch/riscv/kernel/setup.c
View File

@ -85,15 +85,8 @@ atomic_t hart_lottery;
#ifdef CONFIG_BLK_DEV_INITRD
static void __init setup_initrd(void)
{
extern char __initramfs_start[];
extern unsigned long __initramfs_size;
unsigned long size;
if (__initramfs_size > 0) {
initrd_start = (unsigned long)(&__initramfs_start);
initrd_end = initrd_start + __initramfs_size;
}
if (initrd_start >= initrd_end) {
printk(KERN_INFO "initrd not found or empty");
goto disable;

2
arch/s390/crypto/paes_s390.c
View File

@ -208,7 +208,7 @@ static int cbc_paes_crypt(struct blkcipher_desc *desc, unsigned long modifier,
walk->dst.virt.addr, walk->src.virt.addr, n);
if (k)
ret = blkcipher_walk_done(desc, walk, nbytes - k);
if (n < k) {
if (k < n) {
if (__cbc_paes_set_key(ctx) != 0)
return blkcipher_walk_done(desc, walk, -EIO);
memcpy(param.key, ctx->pk.protkey, MAXPROTKEYSIZE);

8
arch/s390/include/asm/mmu.h
View File

@ -16,7 +16,13 @@ typedef struct {
unsigned long asce;
unsigned long asce_limit;
unsigned long vdso_base;
/* The mmu context allocates 4K page tables. */
/*
* The following bitfields need a down_write on the mm
* semaphore when they are written to. As they are only
* written once, they can be read without a lock.
*
* The mmu context allocates 4K page tables.
*/
unsigned int alloc_pgste:1;
/* The mmu context uses extended page tables. */
unsigned int has_pgste:1;

2
arch/s390/kvm/kvm-s390.c
View File

@ -695,7 +695,9 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap)
r = -EINVAL;
else {
r = 0;
down_write(&kvm->mm->mmap_sem);
kvm->mm->context.allow_gmap_hpage_1m = 1;
up_write(&kvm->mm->mmap_sem);
/*
* We might have to create fake 4k page
* tables. To avoid that the hardware works on

30
arch/s390/kvm/priv.c
View File

@ -280,9 +280,11 @@ retry:
goto retry;
}
}
if (rc)
return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
up_read(&current->mm->mmap_sem);
if (rc == -EFAULT)
return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
if (rc < 0)
return rc;
vcpu->run->s.regs.gprs[reg1] &= ~0xff;
vcpu->run->s.regs.gprs[reg1] |= key;
return 0;
@ -324,9 +326,11 @@ retry:
goto retry;
}
}
if (rc < 0)
return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
up_read(&current->mm->mmap_sem);
if (rc == -EFAULT)
return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
if (rc < 0)
return rc;
kvm_s390_set_psw_cc(vcpu, rc);
return 0;
}
@ -390,12 +394,12 @@ static int handle_sske(struct kvm_vcpu *vcpu)
FAULT_FLAG_WRITE, &unlocked);
rc = !rc ? -EAGAIN : rc;
}
up_read(&current->mm->mmap_sem);
if (rc == -EFAULT)
return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
up_read(&current->mm->mmap_sem);
if (rc >= 0)
start += PAGE_SIZE;
if (rc < 0)
return rc;
start += PAGE_SIZE;
}
if (m3 & (SSKE_MC | SSKE_MR)) {
@ -1002,13 +1006,15 @@ static int handle_pfmf(struct kvm_vcpu *vcpu)
FAULT_FLAG_WRITE, &unlocked);
rc = !rc ? -EAGAIN : rc;
}
up_read(&current->mm->mmap_sem);
if (rc == -EFAULT)
return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
up_read(&current->mm->mmap_sem);
if (rc >= 0)
start += PAGE_SIZE;
if (rc == -EAGAIN)
continue;
if (rc < 0)
return rc;
}
start += PAGE_SIZE;
}
if (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) {
if (psw_bits(vcpu->arch.sie_block->gpsw).eaba == PSW_BITS_AMODE_64BIT) {

3
arch/s390/kvm/vsie.c
View File

@ -173,7 +173,8 @@ static int shadow_crycb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
return set_validity_icpt(scb_s, 0x0039U);
/* copy only the wrapping keys */
if (read_guest_real(vcpu, crycb_addr + 72, &vsie_page->crycb, 56))
if (read_guest_real(vcpu, crycb_addr + 72,
vsie_page->crycb.dea_wrapping_key_mask, 56))
return set_validity_icpt(scb_s, 0x0035U);
scb_s->ecb3 |= ecb3_flags;

4
arch/sparc/kernel/of_device_32.c
View File

@ -9,6 +9,7 @@
#include <linux/irq.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
#include <linux/dma-mapping.h>
#include <asm/leon.h>
#include <asm/leon_amba.h>
@ -381,6 +382,9 @@ static struct platform_device * __init scan_one_device(struct device_node *dp,
else
dev_set_name(&op->dev, "%08x", dp->phandle);
op->dev.coherent_dma_mask = DMA_BIT_MASK(32);
op->dev.dma_mask = &op->dev.coherent_dma_mask;
if (of_device_register(op)) {
printk("%s: Could not register of device.\n",
dp->full_name);

3
arch/sparc/kernel/of_device_64.c
View File

@ -2,6 +2,7 @@
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/dma-mapping.h>
#include <linux/init.h>
#include <linux/export.h>
#include <linux/mod_devicetable.h>
@ -675,6 +676,8 @@ static struct platform_device * __init scan_one_device(struct device_node *dp,
dev_set_name(&op->dev, "root");
else
dev_set_name(&op->dev, "%08x", dp->phandle);
op->dev.coherent_dma_mask = DMA_BIT_MASK(32);
op->dev.dma_mask = &op->dev.coherent_dma_mask;
if (of_device_register(op)) {
printk("%s: Could not register of device.\n",

4
arch/x86/events/intel/lbr.c
View File

@ -1272,4 +1272,8 @@ void intel_pmu_lbr_init_knl(void)
x86_pmu.lbr_sel_mask = LBR_SEL_MASK;
x86_pmu.lbr_sel_map = snb_lbr_sel_map;
/* Knights Landing does have MISPREDICT bit */
if (x86_pmu.intel_cap.lbr_format == LBR_FORMAT_LIP)
x86_pmu.intel_cap.lbr_format = LBR_FORMAT_EIP_FLAGS;
}

12
arch/x86/include/asm/atomic.h
View File

@ -80,11 +80,11 @@ static __always_inline void arch_atomic_sub(int i, atomic_t *v)
* true if the result is zero, or false for all
* other cases.
*/
#define arch_atomic_sub_and_test arch_atomic_sub_and_test
static __always_inline bool arch_atomic_sub_and_test(int i, atomic_t *v)
{
GEN_BINARY_RMWcc(LOCK_PREFIX "subl", v->counter, "er", i, "%0", e);
}
#define arch_atomic_sub_and_test arch_atomic_sub_and_test
/**
* arch_atomic_inc - increment atomic variable
@ -92,12 +92,12 @@ static __always_inline bool arch_atomic_sub_and_test(int i, atomic_t *v)
*
* Atomically increments @v by 1.
*/
#define arch_atomic_inc arch_atomic_inc
static __always_inline void arch_atomic_inc(atomic_t *v)
{
asm volatile(LOCK_PREFIX "incl %0"
: "+m" (v->counter));
}
#define arch_atomic_inc arch_atomic_inc
/**
* arch_atomic_dec - decrement atomic variable
@ -105,12 +105,12 @@ static __always_inline void arch_atomic_inc(atomic_t *v)
*
* Atomically decrements @v by 1.
*/
#define arch_atomic_dec arch_atomic_dec
static __always_inline void arch_atomic_dec(atomic_t *v)
{
asm volatile(LOCK_PREFIX "decl %0"
: "+m" (v->counter));
}
#define arch_atomic_dec arch_atomic_dec
/**
* arch_atomic_dec_and_test - decrement and test
@ -120,11 +120,11 @@ static __always_inline void arch_atomic_dec(atomic_t *v)
* returns true if the result is 0, or false for all other
* cases.
*/
#define arch_atomic_dec_and_test arch_atomic_dec_and_test
static __always_inline bool arch_atomic_dec_and_test(atomic_t *v)
{
GEN_UNARY_RMWcc(LOCK_PREFIX "decl", v->counter, "%0", e);
}
#define arch_atomic_dec_and_test arch_atomic_dec_and_test
/**
* arch_atomic_inc_and_test - increment and test
@ -134,11 +134,11 @@ static __always_inline bool arch_atomic_dec_and_test(atomic_t *v)
* and returns true if the result is zero, or false for all
* other cases.
*/
#define arch_atomic_inc_and_test arch_atomic_inc_and_test
static __always_inline bool arch_atomic_inc_and_test(atomic_t *v)
{
GEN_UNARY_RMWcc(LOCK_PREFIX "incl", v->counter, "%0", e);
}
#define arch_atomic_inc_and_test arch_atomic_inc_and_test
/**
* arch_atomic_add_negative - add and test if negative
@ -149,11 +149,11 @@ static __always_inline bool arch_atomic_inc_and_test(atomic_t *v)
* if the result is negative, or false when
* result is greater than or equal to zero.
*/
#define arch_atomic_add_negative arch_atomic_add_negative
static __always_inline bool arch_atomic_add_negative(int i, atomic_t *v)
{
GEN_BINARY_RMWcc(LOCK_PREFIX "addl", v->counter, "er", i, "%0", s);
}
#define arch_atomic_add_negative arch_atomic_add_negative
/**
* arch_atomic_add_return - add integer and return

8
arch/x86/include/asm/atomic64_32.h
View File

@ -205,12 +205,12 @@ static inline long long arch_atomic64_sub(long long i, atomic64_t *v)
*
* Atomically increments @v by 1.
*/
#define arch_atomic64_inc arch_atomic64_inc
static inline void arch_atomic64_inc(atomic64_t *v)
{
__alternative_atomic64(inc, inc_return, /* no output */,
"S" (v) : "memory", "eax", "ecx", "edx");
}
#define arch_atomic64_inc arch_atomic64_inc
/**
* arch_atomic64_dec - decrement atomic64 variable
@ -218,12 +218,12 @@ static inline void arch_atomic64_inc(atomic64_t *v)
*
* Atomically decrements @v by 1.
*/
#define arch_atomic64_dec arch_atomic64_dec
static inline void arch_atomic64_dec(atomic64_t *v)
{
__alternative_atomic64(dec, dec_return, /* no output */,
"S" (v) : "memory", "eax", "ecx", "edx");
}
#define arch_atomic64_dec arch_atomic64_dec
/**
* arch_atomic64_add_unless - add unless the number is a given value
@ -245,7 +245,6 @@ static inline int arch_atomic64_add_unless(atomic64_t *v, long long a,
return (int)a;
}
#define arch_atomic64_inc_not_zero arch_atomic64_inc_not_zero
static inline int arch_atomic64_inc_not_zero(atomic64_t *v)
{
int r;
@ -253,8 +252,8 @@ static inline int arch_atomic64_inc_not_zero(atomic64_t *v)
"S" (v) : "ecx", "edx", "memory");
return r;
}
#define arch_atomic64_inc_not_zero arch_atomic64_inc_not_zero
#define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
static inline long long arch_atomic64_dec_if_positive(atomic64_t *v)
{
long long r;
@ -262,6 +261,7 @@ static inline long long arch_atomic64_dec_if_positive(atomic64_t *v)
"S" (v) : "ecx", "memory");
return r;
}
#define arch_atomic64_dec_if_positive arch_atomic64_dec_if_positive
#undef alternative_atomic64
#undef __alternative_atomic64

12
arch/x86/include/asm/atomic64_64.h
View File

@ -71,11 +71,11 @@ static inline void arch_atomic64_sub(long i, atomic64_t *v)
* true if the result is zero, or false for all
* other cases.
*/
#define arch_atomic64_sub_and_test arch_atomic64_sub_and_test
static inline bool arch_atomic64_sub_and_test(long i, atomic64_t *v)
{
GEN_BINARY_RMWcc(LOCK_PREFIX "subq", v->counter, "er", i, "%0", e);
}
#define arch_atomic64_sub_and_test arch_atomic64_sub_and_test
/**
* arch_atomic64_inc - increment atomic64 variable
@ -83,13 +83,13 @@ static inline bool arch_atomic64_sub_and_test(long i, atomic64_t *v)
*
* Atomically increments @v by 1.
*/
#define arch_atomic64_inc arch_atomic64_inc
static __always_inline void arch_atomic64_inc(atomic64_t *v)
{
asm volatile(LOCK_PREFIX "incq %0"
: "=m" (v->counter)
: "m" (v->counter));
}
#define arch_atomic64_inc arch_atomic64_inc
/**
* arch_atomic64_dec - decrement atomic64 variable
@ -97,13 +97,13 @@ static __always_inline void arch_atomic64_inc(atomic64_t *v)
*
* Atomically decrements @v by 1.
*/
#define arch_atomic64_dec arch_atomic64_dec
static __always_inline void arch_atomic64_dec(atomic64_t *v)
{
asm volatile(LOCK_PREFIX "decq %0"
: "=m" (v->counter)
: "m" (v->counter));
}
#define arch_atomic64_dec arch_atomic64_dec
/**
* arch_atomic64_dec_and_test - decrement and test
@ -113,11 +113,11 @@ static __always_inline void arch_atomic64_dec(atomic64_t *v)
* returns true if the result is 0, or false for all other
* cases.
*/
#define arch_atomic64_dec_and_test arch_atomic64_dec_and_test
static inline bool arch_atomic64_dec_and_test(atomic64_t *v)
{
GEN_UNARY_RMWcc(LOCK_PREFIX "decq", v->counter, "%0", e);
}
#define arch_atomic64_dec_and_test arch_atomic64_dec_and_test
/**
* arch_atomic64_inc_and_test - increment and test
@ -127,11 +127,11 @@ static inline bool arch_atomic64_dec_and_test(atomic64_t *v)
* and returns true if the result is zero, or false for all
* other cases.
*/
#define arch_atomic64_inc_and_test arch_atomic64_inc_and_test
static inline bool arch_atomic64_inc_and_test(atomic64_t *v)
{
GEN_UNARY_RMWcc(LOCK_PREFIX "incq", v->counter, "%0", e);
}
#define arch_atomic64_inc_and_test arch_atomic64_inc_and_test
/**
* arch_atomic64_add_negative - add and test if negative
@ -142,11 +142,11 @@ static inline bool arch_atomic64_inc_and_test(atomic64_t *v)
* if the result is negative, or false when
* result is greater than or equal to zero.
*/
#define arch_atomic64_add_negative arch_atomic64_add_negative
static inline bool arch_atomic64_add_negative(long i, atomic64_t *v)
{
GEN_BINARY_RMWcc(LOCK_PREFIX "addq", v->counter, "er", i, "%0", s);
}
#define arch_atomic64_add_negative arch_atomic64_add_negative
/**
* arch_atomic64_add_return - add and return

12
arch/x86/include/asm/kdebug.h
View File

@ -22,10 +22,20 @@ enum die_val {
DIE_NMIUNKNOWN,
};
enum show_regs_mode {
SHOW_REGS_SHORT,
/*
* For when userspace crashed, but we don't think it's our fault, and
* therefore don't print kernel registers.
*/
SHOW_REGS_USER,
SHOW_REGS_ALL
};
extern void die(const char *, struct pt_regs *,long);
extern int __must_check __die(const char *, struct pt_regs *, long);
extern void show_stack_regs(struct pt_regs *regs);
extern void __show_regs(struct pt_regs *regs, int all);
extern void __show_regs(struct pt_regs *regs, enum show_regs_mode);
extern void show_iret_regs(struct pt_regs *regs);
extern unsigned long oops_begin(void);
extern void oops_end(unsigned long, struct pt_regs *, int signr);

22
arch/x86/include/asm/kvm_host.h
View File

@ -1237,19 +1237,12 @@ enum emulation_result {
#define EMULTYPE_NO_DECODE (1 << 0)
#define EMULTYPE_TRAP_UD (1 << 1)
#define EMULTYPE_SKIP (1 << 2)
#define EMULTYPE_RETRY (1 << 3)
#define EMULTYPE_NO_REEXECUTE (1 << 4)
#define EMULTYPE_NO_UD_ON_FAIL (1 << 5)
#define EMULTYPE_VMWARE (1 << 6)
int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
int emulation_type, void *insn, int insn_len);
static inline int emulate_instruction(struct kvm_vcpu *vcpu,
int emulation_type)
{
return x86_emulate_instruction(vcpu, 0,
emulation_type | EMULTYPE_NO_REEXECUTE, NULL, 0);
}
#define EMULTYPE_ALLOW_RETRY (1 << 3)
#define EMULTYPE_NO_UD_ON_FAIL (1 << 4)
#define EMULTYPE_VMWARE (1 << 5)
int kvm_emulate_instruction(struct kvm_vcpu *vcpu, int emulation_type);
int kvm_emulate_instruction_from_buffer(struct kvm_vcpu *vcpu,
void *insn, int insn_len);
void kvm_enable_efer_bits(u64);
bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer);
@ -1450,7 +1443,6 @@ asmlinkage void kvm_spurious_fault(void);
____kvm_handle_fault_on_reboot(insn, "")
#define KVM_ARCH_WANT_MMU_NOTIFIER
int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end);
int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end);
int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
@ -1463,7 +1455,7 @@ void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event);
void kvm_vcpu_reload_apic_access_page(struct kvm_vcpu *vcpu);
int kvm_pv_send_ipi(struct kvm *kvm, unsigned long ipi_bitmap_low,
unsigned long ipi_bitmap_high, int min,
unsigned long ipi_bitmap_high, u32 min,
unsigned long icr, int op_64_bit);
u64 kvm_get_arch_capabilities(void);

9
arch/x86/include/asm/pgtable-2level.h
View File

@ -19,9 +19,6 @@ static inline void native_set_pte(pte_t *ptep , pte_t pte)
static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
{
#ifdef CONFIG_PAGE_TABLE_ISOLATION
pmd.pud.p4d.pgd = pti_set_user_pgtbl(&pmdp->pud.p4d.pgd, pmd.pud.p4d.pgd);
#endif
*pmdp = pmd;
}
@ -61,9 +58,6 @@ static inline pte_t native_ptep_get_and_clear(pte_t *xp)
#ifdef CONFIG_SMP
static inline pmd_t native_pmdp_get_and_clear(pmd_t *xp)
{
#ifdef CONFIG_PAGE_TABLE_ISOLATION
pti_set_user_pgtbl(&xp->pud.p4d.pgd, __pgd(0));
#endif
return __pmd(xchg((pmdval_t *)xp, 0));
}
#else
@ -73,9 +67,6 @@ static inline pmd_t native_pmdp_get_and_clear(pmd_t *xp)
#ifdef CONFIG_SMP
static inline pud_t native_pudp_get_and_clear(pud_t *xp)
{
#ifdef CONFIG_PAGE_TABLE_ISOLATION
pti_set_user_pgtbl(&xp->p4d.pgd, __pgd(0));
#endif
return __pud(xchg((pudval_t *)xp, 0));
}
#else

2
arch/x86/include/asm/pgtable.h
View File

@ -1195,7 +1195,7 @@ static inline pmd_t pmdp_establish(struct vm_area_struct *vma,
return xchg(pmdp, pmd);
} else {
pmd_t old = *pmdp;
*pmdp = pmd;
WRITE_ONCE(*pmdp, pmd);
return old;
}
}

22
arch/x86/include/asm/pgtable_64.h
View File

@ -55,15 +55,15 @@ struct mm_struct;
void set_pte_vaddr_p4d(p4d_t *p4d_page, unsigned long vaddr, pte_t new_pte);
void set_pte_vaddr_pud(pud_t *pud_page, unsigned long vaddr, pte_t new_pte);
static inline void native_set_pte(pte_t *ptep, pte_t pte)
{
WRITE_ONCE(*ptep, pte);
}
static inline void native_pte_clear(struct mm_struct *mm, unsigned long addr,
pte_t *ptep)
{
*ptep = native_make_pte(0);
}
static inline void native_set_pte(pte_t *ptep, pte_t pte)
{
*ptep = pte;
native_set_pte(ptep, native_make_pte(0));
}
static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte)
@ -73,7 +73,7 @@ static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte)
static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
{
*pmdp = pmd;
WRITE_ONCE(*pmdp, pmd);
}
static inline void native_pmd_clear(pmd_t *pmd)
@ -109,7 +109,7 @@ static inline pmd_t native_pmdp_get_and_clear(pmd_t *xp)
static inline void native_set_pud(pud_t *pudp, pud_t pud)
{
*pudp = pud;
WRITE_ONCE(*pudp, pud);
}
static inline void native_pud_clear(pud_t *pud)
@ -137,13 +137,13 @@ static inline void native_set_p4d(p4d_t *p4dp, p4d_t p4d)
pgd_t pgd;
if (pgtable_l5_enabled() || !IS_ENABLED(CONFIG_PAGE_TABLE_ISOLATION)) {
*p4dp = p4d;
WRITE_ONCE(*p4dp, p4d);
return;
}
pgd = native_make_pgd(native_p4d_val(p4d));
pgd = pti_set_user_pgtbl((pgd_t *)p4dp, pgd);
*p4dp = native_make_p4d(native_pgd_val(pgd));
WRITE_ONCE(*p4dp, native_make_p4d(native_pgd_val(pgd)));
}
static inline void native_p4d_clear(p4d_t *p4d)
@ -153,7 +153,7 @@ static inline void native_p4d_clear(p4d_t *p4d)
static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd)
{
*pgdp = pti_set_user_pgtbl(pgdp, pgd);
WRITE_ONCE(*pgdp, pti_set_user_pgtbl(pgdp, pgd));
}
static inline void native_pgd_clear(pgd_t *pgd)

2
arch/x86/kernel/apic/vector.c
View File

@ -413,7 +413,7 @@ static int activate_managed(struct irq_data *irqd)
if (WARN_ON_ONCE(cpumask_empty(vector_searchmask))) {
/* Something in the core code broke! Survive gracefully */
pr_err("Managed startup for irq %u, but no CPU\n", irqd->irq);
return EINVAL;
return -EINVAL;
}
ret = assign_managed_vector(irqd, vector_searchmask);

2
arch/x86/kernel/apm_32.c
View File

@ -1640,6 +1640,7 @@ static int do_open(struct inode *inode, struct file *filp)
return 0;
}
#ifdef CONFIG_PROC_FS
static int proc_apm_show(struct seq_file *m, void *v)
{
unsigned short bx;
@ -1719,6 +1720,7 @@ static int proc_apm_show(struct seq_file *m, void *v)
units);
return 0;
}
#endif
static int apm(void *unused)
{

24
arch/x86/kernel/cpu/microcode/amd.c
View File

@ -504,6 +504,7 @@ static enum ucode_state apply_microcode_amd(int cpu)
struct microcode_amd *mc_amd;
struct ucode_cpu_info *uci;
struct ucode_patch *p;
enum ucode_state ret;
u32 rev, dummy;
BUG_ON(raw_smp_processor_id() != cpu);
@ -521,9 +522,8 @@ static enum ucode_state apply_microcode_amd(int cpu)
/* need to apply patch? */
if (rev >= mc_amd->hdr.patch_id) {
c->microcode = rev;
uci->cpu_sig.rev = rev;
return UCODE_OK;
ret = UCODE_OK;
goto out;
}
if (__apply_microcode_amd(mc_amd)) {
@ -531,13 +531,21 @@ static enum ucode_state apply_microcode_amd(int cpu)
cpu, mc_amd->hdr.patch_id);
return UCODE_ERROR;
}
pr_info("CPU%d: new patch_level=0x%08x\n", cpu,
mc_amd->hdr.patch_id);
uci->cpu_sig.rev = mc_amd->hdr.patch_id;
c->microcode = mc_amd->hdr.patch_id;
rev = mc_amd->hdr.patch_id;
ret = UCODE_UPDATED;
return UCODE_UPDATED;
pr_info("CPU%d: new patch_level=0x%08x\n", cpu, rev);
out:
uci->cpu_sig.rev = rev;
c->microcode = rev;
/* Update boot_cpu_data's revision too, if we're on the BSP: */
if (c->cpu_index == boot_cpu_data.cpu_index)
boot_cpu_data.microcode = rev;
return ret;
}
static int install_equiv_cpu_table(const u8 *buf)

19
arch/x86/kernel/cpu/microcode/intel.c
View File

@ -795,6 +795,7 @@ static enum ucode_state apply_microcode_intel(int cpu)
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
struct cpuinfo_x86 *c = &cpu_data(cpu);
struct microcode_intel *mc;
enum ucode_state ret;
static int prev_rev;
u32 rev;
@ -817,9 +818,8 @@ static enum ucode_state apply_microcode_intel(int cpu)
*/
rev = intel_get_microcode_revision();
if (rev >= mc->hdr.rev) {
uci->cpu_sig.rev = rev;
c->microcode = rev;
return UCODE_OK;
ret = UCODE_OK;
goto out;
}
/*
@ -848,10 +848,17 @@ static enum ucode_state apply_microcode_intel(int cpu)
prev_rev = rev;
}
uci->cpu_sig.rev = rev;
c->microcode = rev;
ret = UCODE_UPDATED;
return UCODE_UPDATED;
out:
uci->cpu_sig.rev = rev;
c->microcode = rev;
/* Update boot_cpu_data's revision too, if we're on the BSP: */
if (c->cpu_index == boot_cpu_data.cpu_index)
boot_cpu_data.microcode = rev;
return ret;
}
static enum ucode_state generic_load_microcode(int cpu, void *data, size_t size,

11
arch/x86/kernel/dumpstack.c
View File

@ -146,7 +146,7 @@ static void show_regs_if_on_stack(struct stack_info *info, struct pt_regs *regs,
* they can be printed in the right context.
*/
if (!partial && on_stack(info, regs, sizeof(*regs))) {
__show_regs(regs, 0);
__show_regs(regs, SHOW_REGS_SHORT);
} else if (partial && on_stack(info, (void *)regs + IRET_FRAME_OFFSET,
IRET_FRAME_SIZE)) {
@ -344,7 +344,7 @@ void oops_end(unsigned long flags, struct pt_regs *regs, int signr)
oops_exit();
/* Executive summary in case the oops scrolled away */
__show_regs(&exec_summary_regs, true);
__show_regs(&exec_summary_regs, SHOW_REGS_ALL);
if (!signr)
return;
@ -407,14 +407,9 @@ void die(const char *str, struct pt_regs *regs, long err)
void show_regs(struct pt_regs *regs)
{
bool all = true;
show_regs_print_info(KERN_DEFAULT);
if (IS_ENABLED(CONFIG_X86_32))
all = !user_mode(regs);
__show_regs(regs, all);
__show_regs(regs, user_mode(regs) ? SHOW_REGS_USER : SHOW_REGS_ALL);
/*
* When in-kernel, we also print out the stack at the time of the fault..

10
arch/x86/kernel/eisa.c
View File

@ -7,11 +7,17 @@
#include <linux/eisa.h>
#include <linux/io.h>
#include <xen/xen.h>
static __init int eisa_bus_probe(void)
{
void __iomem *p = ioremap(0x0FFFD9, 4);
void __iomem *p;
if (readl(p) == 'E' + ('I'<<8) + ('S'<<16) + ('A'<<24))
if (xen_pv_domain() && !xen_initial_domain())
return 0;
p = ioremap(0x0FFFD9, 4);
if (p && readl(p) == 'E' + ('I' << 8) + ('S' << 16) + ('A' << 24))
EISA_bus = 1;
iounmap(p);
return 0;

4
arch/x86/kernel/process_32.c
View File

@ -59,7 +59,7 @@
#include <asm/intel_rdt_sched.h>
#include <asm/proto.h>
void __show_regs(struct pt_regs *regs, int all)
void __show_regs(struct pt_regs *regs, enum show_regs_mode mode)
{
unsigned long cr0 = 0L, cr2 = 0L, cr3 = 0L, cr4 = 0L;
unsigned long d0, d1, d2, d3, d6, d7;
@ -85,7 +85,7 @@ void __show_regs(struct pt_regs *regs, int all)
printk(KERN_DEFAULT "DS: %04x ES: %04x FS: %04x GS: %04x SS: %04x EFLAGS: %08lx\n",
(u16)regs->ds, (u16)regs->es, (u16)regs->fs, gs, ss, regs->flags);
if (!all)
if (mode != SHOW_REGS_ALL)
return;
cr0 = read_cr0();

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