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David Hildenbrand 750b317f85 agp: efficeon: no need to set PG_reserved on GATT tables 
Patch series "mm: PG_reserved cleanups and documentation", v2.

I was recently going over all users of PG_reserved.  Short story: it is
difficult and sometimes not really clear if setting/checking for
PG_reserved is only a relict from the past.  Easy to break things.  I
guess I now have a pretty good idea wh things are like that nowadays and
how they evolved.

I had way more cleanups in this series inititally, but some
architectures take PG_reserved as a way to apply a different caching
strategy (for MMIO pages).  So I decided to only include the most
obvious changes (that are less likely to break something).  So the big
chunk of manual SetPageReserved users are MMIO/DMA related things on
device buffers.

Most notably, for device memory we will hopefully soon stop setting
PG_reserved.  Then the documentation has to be updated.

This patch (of 9):

The l1 GATT page table is kept in a special on-chip page with 64
entries.  We allocate the l2 page table pages via get_zeroed_page() and
enter them into the table.  These l2 pages are modified accordingly when
inserting/removing memory via efficeon_insert_memory and
efficeon_remove_memory.

Apart from that, these pages are not exposed or ioremap'ed.  We can stop
setting them reserved (propably copied from generic code).

Link: http://lkml.kernel.org/r/20190114125903.24845-2-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2019-03-05 21:07:18 -08:00
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accessibility
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acpi ACPI: Set debug output flags independent of ACPICA 2019-02-07 12:24:28 +01:00
amba
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android binderfs: remove separate device_initcall() 2019-02-01 15:50:26 +01:00
ata libata: Add NOLPM quirk for SAMSUNG MZ7TE512HMHP-000L1 SSD 2019-02-06 12:47:09 -07:00
atm atm: he: fix sign-extension overflow on large shift 2019-01-17 11:27:00 -08:00
auxdisplay auxdisplay: ht16k33: fix potential user-after-free on module unload 2019-02-15 19:48:39 +01:00
base regmap: Changes for v5.1 2019-03-04 19:16:09 -08:00
bcma bcma: use dev_* printing functions 2019-01-10 13:39:19 +02:00
block mm: replace all open encodings for NUMA_NO_NODE 2019-03-05 21:07:14 -08:00
bluetooth Bluetooth: mediatek: add support for MediaTek MT7663U and MT7668U UART devices 2019-03-02 19:51:23 +01:00
bus Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-03-05 09:09:55 -08:00
cdrom gdrom: fix a memory leak bug 2018-12-29 08:20:44 -07:00
char agp: efficeon: no need to set PG_reserved on GATT tables 2019-03-05 21:07:18 -08:00
clk clk: at91: fix masterck name 2019-02-20 11:40:21 -08:00
clocksource Merge branch 'pwm-dmtimer-fixes' into omap-for-v5.0/fixes-v2 2019-01-29 07:53:47 -08:00
connector
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cpufreq cpufreq: scmi: Fix use-after-free in scmi_cpufreq_exit() 2019-02-19 11:17:37 +01:00
cpuidle cpuidle: poll_state: Fix default time limit 2019-01-30 22:57:42 +01:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-03-05 09:09:55 -08:00
dax mm, devm_memremap_pages: fix shutdown handling 2018-12-28 12:11:47 -08:00
dca
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devfreq PM / devfreq: add devfreq_suspend/resume() functions 2018-12-11 11:40:13 +09:00
dio dio: Fix buffer overflow in case of unknown board 2019-01-21 10:36:53 +01:00
dma mm: replace all open encodings for NUMA_NO_NODE 2019-03-05 21:07:14 -08:00
dma-buf drivers/dma-buf/udmabuf.c: convert to use vm_fault_t 2019-01-04 13:13:46 -08:00
edac EDAC, altera: Fix S10 persistent register offset 2019-01-24 17:13:59 +01:00
eisa eisa: consolidate EISA Kconfig entry in drivers/eisa 2018-11-23 11:46:22 +09:00
extcon extcon: max8997: Fix lack of path setting in USB device mode 2018-11-14 09:06:32 +09:00
firewire scsi: communicate max segment size to the DMA mapping code 2019-01-22 20:40:59 -05:00
firmware Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-02-17 09:22:01 -08:00
fmc
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fpga fpga: stratix10-soc: fix wrong of_node_put() in init function 2019-01-31 16:19:48 +01:00
fsi fsi: Add On-Chip Controller (OCC) driver 2018-12-02 16:25:28 -08:00
gnss Merge 4.20-rc6 into tty-next 2018-12-10 10:17:45 +01:00
gpio Merge branch 'spi-5.1' into spi-next 2019-03-04 15:32:51 +00:00
gpu mm, compaction: use free lists to quickly locate a migration source 2019-03-05 21:07:16 -08:00
hid HID: debug: fix the ring buffer implementation 2019-01-29 12:09:11 +01:00
hsi HSI: omap_ssi: Change to use DEFINE_SHOW_ATTRIBUTE macro 2018-12-05 00:16:59 +01:00
hv hv_balloon: mark inflated pages PG_offline 2019-03-05 21:07:14 -08:00
hwmon hwmon: (ad7418) Add device tree probing 2019-02-25 09:06:00 -08:00
hwspinlock hwspinlock: fix return value check in stm32_hwspinlock_probe() 2019-01-03 11:42:10 -08:00
hwtracing intel_th: msu: Fix an off-by-one in attribute store 2018-12-19 20:21:06 +01:00
i2c i2c: bcm2835: Clear current buffer pointers and counts after a transfer 2019-02-15 09:45:05 +01:00
i3c - Add a /* fall-through */ comment in the dw-i3c-master driver 2019-03-04 19:05:02 -08:00
ide ide: ensure atapi sense request aren't preempted 2019-01-31 08:25:09 -07:00
idle
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iio First set of IIO fixes for the 5.0 cycle. 2019-02-03 13:10:41 +01:00
infiniband mm: replace all open encodings for NUMA_NO_NODE 2019-03-05 21:07:14 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2019-02-17 08:30:35 -08:00
iommu mm: replace all open encodings for NUMA_NO_NODE 2019-03-05 21:07:14 -08:00
ipack
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irqchip Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-02-10 09:54:19 -08:00
isdn isdn: mISDN: Fix potential NULL pointer dereference of kzalloc 2019-03-04 10:54:48 -08:00
leds LED updates for 5.1-rc1 2019-03-04 19:33:04 -08:00
lightnvm lightnvm: pblk: fix use-after-free bug 2018-12-22 14:45:35 -07:00
macintosh Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
mailbox mailbox: bcm-flexrm-mailbox: Fix FlexRM ring flush timeout issue 2019-02-18 10:40:58 -06:00
mcb
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md for-linus-20190215 2019-02-15 09:12:28 -08:00
media media: vim2m: only cancel work if it is for right context 2019-01-16 11:13:25 -05:00
memory ARM: SoC: late updates 2019-01-05 11:30:37 -08:00
memstick MMC core: 2018-12-28 16:52:18 -08:00
message scsi: flip the default on use_clustering 2018-12-18 23:13:12 -05:00
mfd mfd: Fix unmet dependency warning for MFD_TPS68470 2019-01-29 10:55:34 +01:00
misc mm: replace all open encodings for NUMA_NO_NODE 2019-03-05 21:07:14 -08:00
mmc mmc:fix a bug when max_discard is 0 2019-03-01 09:50:10 +01:00
mtd spi: Updates for v5.1 2019-03-04 19:23:56 -08:00
mux
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net mm: replace all open encodings for NUMA_NO_NODE 2019-03-05 21:07:14 -08:00
nfc
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ntb cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
nubus
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nvdimm libnvdimm/security: Require nvdimm_security_setup_events() to succeed 2019-01-21 09:57:43 -08:00
nvme nvme-pci: add missing unlock for reset error 2019-02-12 09:29:07 +01:00
nvmem nvmem: add new config option 2018-12-06 15:45:46 +01:00
of net: phy: fixed-phy: Drop GPIO from fixed_phy_add() 2019-02-04 18:33:36 -08:00
opp cpufreq: scpi/scmi: Fix freeing of dynamic OPPs 2019-01-04 12:19:40 +01:00
oprofile
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parisc parisc: Use F_EXTEND() macro in iosapic code 2019-02-21 20:37:12 +01:00
parport parport: parport_pc: Mark expected switch fall-through 2018-11-27 08:31:27 +01:00
pci pci-v5.0-fixes-4 2019-02-08 15:32:10 -08:00
pcmcia Included in this update: 2019-01-05 11:23:17 -08:00
perf drivers/perf: hisi: Fixup one DDRC PMU register offset 2019-01-04 10:13:27 +00:00
phy phy: armada38x: add common phy support 2019-02-07 18:10:25 -08:00
pinctrl pinctrl: meson: meson8b: fix the sdxc_a data 1..3 pins 2019-02-17 22:24:32 +01:00
platform platform/x86: Fix unmet dependency warning for SAMSUNG_Q10 2019-01-29 10:59:07 +01:00
pnp Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
power power supply and reset changes for the v4.21 series 2018-12-28 20:22:45 -08:00
powercap
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pps Kconfig updates for v4.21 2018-12-29 13:03:29 -08:00
ps3
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ptp ptp_qoriq: don't pass a large struct by value but instead pass it by reference 2019-02-19 14:15:40 -08:00
pwm pwm: imx: Add ipg clock operation 2018-12-24 12:06:56 +01:00
rapidio cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
ras treewide: surround Kconfig file paths with double quotes 2018-12-22 00:25:54 +09:00
regulator regulator: mc13xxx: Constify regulator_ops variables 2019-03-04 00:01:08 +00:00
remoteproc virtio: don't allocate vqs when names[i] = NULL 2019-01-14 20:15:19 -05:00
reset reset: uniphier-glue: Add AHCI reset control support in glue layer 2019-01-07 16:38:51 +01:00
rpmsg
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rtc RTC for 4.21 2019-01-01 13:24:31 -08:00
s390 s390 updates for the 5.1 merge window 2019-03-05 11:13:10 -08:00
sbus Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next 2018-12-26 10:32:18 -08:00
scsi SCSI fixes on 20190302 2019-03-02 11:39:54 -08:00
sfi
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sh
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siox
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slimbus slimbus: ngd: fix spelling mistake "exeeds" -> "exceeds" 2018-12-06 15:50:06 +01:00
sn
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soc Here's the main MIPS pull request for v5.1: 2019-03-05 11:28:25 -08:00
soundwire soundwire: intel: constify snd_soc_dai_ops structures 2018-11-12 15:36:06 +05:30
spi Merge branch 'spi-5.1' into spi-next 2019-03-04 15:32:51 +00:00
spmi
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ssb
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staging Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-03-05 08:26:13 -08:00
target scsi: target: make the pi_prot_format ConfigFS path readable 2019-02-04 21:40:32 -05:00
tc
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tee tee: optee: add missing of_node_put after of_device_is_available 2019-02-28 10:23:04 +01:00
thermal thermal: cpu_cooling: Clarify error message 2019-02-05 15:50:13 -08:00
thunderbolt thunderbolt: Export IOMMU based DMA protection support to userspace 2018-12-05 12:01:56 +03:00
tty TTY/Serial fixes for 5.0-rc6 2019-02-08 10:49:55 -08:00
uio Char/Misc driver patches for 4.21-rc1 2018-12-28 20:54:57 -08:00
usb Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next 2019-02-24 22:27:19 -08:00
uwb uwb: clean an indentation issue, remove extraneous tab 2018-11-07 13:22:06 +01:00
vfio vfio_pci: Enable memory accesses before calling pci_map_rom 2019-02-18 14:57:50 -07:00
vhost vhost: correctly check the return value of translate_desc() in log_used() 2019-02-19 13:14:45 -08:00
video TTY/Serial driver fixes for 5.0-rc4 2019-01-25 12:58:40 -10:00
virt vbox: fix link error with 'gcc -Og' 2018-11-11 12:58:27 -08:00
virtio virtio: drop internal struct from UAPI 2019-02-05 15:29:48 -05:00
visorbus
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vlynq
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vme
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w1 treewide: surround Kconfig file paths with double quotes 2018-12-22 00:25:54 +09:00
watchdog watchdog: tqmx86: Fix a couple IS_ERR() vs NULL bugs 2019-01-07 10:10:35 +01:00
xen xen/balloon: mark inflated pages PG_offline 2019-03-05 21:07:14 -08:00
zorro
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Kconfig Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
Makefile i3c: Add core I3C infrastructure 2018-11-12 10:33:49 +01:00