Niklas Schnelle b050848bba s390: make PCI mio support a machine flag ... [ Upstream commit 3322ba0d7bea1e24ae464418626f6a15b69533ab ] Kernel support for the newer PCI mio instructions can be toggled off with the pci=nomio command line option which needs to integrate with common code PCI option parsing. However this option then toggles static branches which can't be toggled yet in an early_param() call. Thus commit 9964f396f1 ("s390: fix setting of mio addressing control") moved toggling the static branches to the PCI init routine. With this setup however we can't check for mio support outside the PCI code during early boot, i.e. before switching the static branches, which we need to be able to export this as an ELF HWCAP. Improve on this by turning mio availability into a machine flag that gets initially set based on CONFIG_PCI and the facility bit and gets toggled off if pci=nomio is found during PCI option parsing allowing simple access to this machine flag after early init. Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-09-22 12:26:29 +02:00
..
Makefile	s390/pci: move everything irq related to pci_irq.c	2019-04-29 10:47:01 +02:00
pci.c	s390: make PCI mio support a machine flag	2021-09-22 12:26:29 +02:00
pci_clp.c	s390/pci: Log new handle in clp_disable_fh()	2020-06-17 16:40:23 +02:00
pci_debug.c	locking/atomic, s390/pci: Remove redundant casts	2019-06-03 12:32:57 +02:00
pci_dma.c	dma-mapping updates for 5.4:	2019-09-19 13:27:23 -07:00
pci_event.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
pci_insn.c	s390/pci: provide support for MIO instructions	2019-04-29 10:47:01 +02:00
pci_irq.c	s390/pci: do not set affinity for floating irqs	2020-05-02 08:48:51 +02:00
pci_mmio.c	s390/pci: Fix s390_mmio_read/write with MIO	2020-05-27 17:46:47 +02:00
pci_sysfs.c	s390/pci: Fix possible deadlock in recover_store()	2020-02-24 08:36:29 +01:00