microsoft
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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/drivers
История
Marc Zyngier 382e6e177b irqchip/gic-v3: Workaround inconsistent PMR setting on NMI entry 
The arm64 entry code suffers from an annoying issue on taking
a NMI, as it sets PMR to a value that actually allows IRQs
to be acknowledged. This is done for consistency with other parts
of the code, and is in the process of being fixed. This shouldn't
be a problem, as we are not enabling interrupts whilst in NMI
context.

However, in the infortunate scenario that we took a spurious NMI
(retired before the read of IAR) *and* that there is an IRQ pending
at the same time, we'll ack the IRQ in NMI context. Too bad.

In order to avoid deadlocks while running something like perf,
teach the GICv3 driver about this situation: if we were in
a context where no interrupt should have fired, transiently
set PMR to a value that only allows NMIs before acking the pending
interrupt, and restore the original value after that.

This papers over the core issue for the time being, and makes
NMIs great again. Sort of.

Fixes: 4d6a38da8e ("arm64: entry: always set GIC_PRIO_PSR_I_SET during entry")
Co-developed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/lkml/20210610145731.1350460-1-maz@kernel.org
 		2021-06-10 17:54:34 +01:00
..
accessibility TTY/Serial driver updates for 5.13-rc1 2021-04-26 11:20:10 -07:00
acpi libnvdimm fixes for 5.13-rc2 2021-05-15 08:32:51 -07:00
amba
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android selinux/stable-5.13 PR 20210426 2021-04-27 13:42:11 -07:00
ata pci-v5.13-changes 2021-05-05 13:24:11 -07:00
atm atm: firestream: Use fallthrough pseudo-keyword 2021-05-07 16:01:08 -07:00
auxdisplay treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
base Driver core fixes for 5.13-rc2 2021-05-16 10:13:14 -07:00
bcma bcma: remove unused function 2021-04-18 09:36:56 +03:00
block block-5.13-2021-05-14 2021-05-15 08:52:30 -07:00
bluetooth Networking changes for 5.13. 2021-04-29 11:57:23 -07:00
bus ARM: SoC drivers for v5.13 2021-04-26 12:11:52 -07:00
cdrom
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char tpm: fix error return code in tpm2_get_cc_attrs_tbl() 2021-05-12 22:36:50 +03:00
clk clk: Skip clk provider registration when np is NULL 2021-05-11 08:47:25 +02:00
clocksource clocksource/drivers/hyper-v: Re-enable VDSO_CLOCKMODE_HVCLOCK on X86 2021-05-14 14:55:13 +02:00
comedi
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connector
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counter
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cpufreq Fix an idle CPU selection bug, and an AMD Ryzen maximum frequency enumeration bug. 2021-05-15 10:24:48 -07:00
cpuidle
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crypto ARM: 2021-05-01 10:14:08 -07:00
cxl cxl/mem: Fix memory device capacity probing 2021-04-16 18:21:56 -07:00
dax
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dca
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devfreq
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dio
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dma dmaengine updates for v5.13-rc1 2021-05-04 11:24:46 -07:00
dma-buf
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edac x86/msr: Rename MSR_K8_SYSCFG to MSR_AMD64_SYSCFG 2021-05-10 07:51:38 +02:00
eisa
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extcon - Core Frameworks 2021-04-28 15:59:13 -07:00
firewire The usual updates from the irq departement: 2021-04-26 09:43:16 -07:00
firmware Assorted arm64 fixes and clean-ups, the most important: 2021-05-07 12:11:05 -07:00
fpga ARM: SoC drivers for v5.13 2021-04-26 12:11:52 -07:00
fsi
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gnss
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gpio gpio updates for v5.13 2021-05-05 12:39:29 -07:00
gpu Merge tag 'drm-msm-fixes-2021-05-09' of https://gitlab.freedesktop.org/drm/msm into drm-fixes 2021-05-15 06:52:15 +10:00
greybus greybus: es2: fix kernel-doc warnings 2021-04-16 07:26:50 +02:00
hid Merge branch 'for-5.13/warnings' into for-linus 2021-04-29 21:47:22 +02:00
hsi HSI: core: fix resource leaks in hsi_add_client_from_dt() 2021-04-16 00:14:49 +02:00
hv printk changes for 5.13 2021-04-27 18:09:44 -07:00
hwmon hwmon: (adm9240) Fix writes into inX_max attributes 2021-05-12 18:53:11 -07:00
hwspinlock
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hwtracing ARM: 2021-05-01 10:14:08 -07:00
i2c Merge branch 'i2c/for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2021-04-30 13:01:02 -07:00
i3c Revert "i3c master: fix missing destroy_workqueue() on error in i3c_master_register" 2021-04-24 22:21:01 +02:00
ide
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idle
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iio iio: tsl2583: Fix division by a zero lux_val 2021-05-10 14:01:48 +01:00
infiniband block-5.13-2021-05-07 2021-05-07 11:35:12 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2021-05-06 23:37:55 -07:00
interconnect CFI on arm64 series for v5.13-rc1 2021-04-27 10:16:46 -07:00
iommu pci-v5.13-changes 2021-05-05 13:24:11 -07:00
ipack
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irqchip irqchip/gic-v3: Workaround inconsistent PMR setting on NMI entry 2021-06-10 17:54:34 +01:00
isdn proc: mandate ->proc_lseek in "struct proc_ops" 2021-05-06 19:24:11 -07:00
leds Nothing too exciting here, just some fixes. 2021-05-03 12:23:03 -07:00
lightnvm
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macintosh macintosh/via-pmu: Fix build warning 2021-04-16 23:57:51 +10:00
mailbox - qcom: enable support for SM8350 and SC7280 2021-04-28 16:10:33 -07:00
mcb
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md Merge branch 'akpm' (patches from Andrew) 2021-05-07 00:34:51 -07:00
media Merge branch 'akpm' (patches from Andrew) 2021-05-07 00:34:51 -07:00
memory .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
memstick memstick: r592: ignore kfifo_out() return code again 2021-04-26 11:08:23 +02:00
message
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mfd - Core Frameworks 2021-04-28 15:59:13 -07:00
misc IOMMU Updates for Linux v5.13 2021-05-01 09:33:00 -07:00
mmc MMC core: 2021-04-28 15:56:51 -07:00
most Staging/IIO driver updates for 5.13-rc1 2021-04-26 11:14:21 -07:00
mtd This pull request contains changes for JFFS2, UBI and UBIFS 2021-05-04 18:08:40 -07:00
mux
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net Networking fixes for 5.13-rc1, including fixes from bpf, can 2021-05-08 08:31:46 -07:00
nfc
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ntb
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nubus
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nvdimm include: remove pagemap.h from blkdev.h 2021-05-06 19:24:11 -07:00
nvme nvmet: use new ana_log_size instead the old one 2021-05-13 16:33:32 +02:00
nvmem
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of of: overlay: Remove redundant assignment to ret 2021-05-03 13:57:56 -05:00
opp
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parisc
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parport treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
pci more s390 updates for 5.13 merge window 2021-05-06 14:39:50 -07:00
pcmcia
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perf ARM: 2021-05-01 10:14:08 -07:00
phy Networking changes for 5.13. 2021-04-29 11:57:23 -07:00
pinctrl linux/kconfig.h: replace IF_ENABLED() with PTR_IF() in <linux/kernel.h> 2021-05-09 00:29:45 +09:00
platform chrome platform changes for 5.13 2021-05-07 14:49:18 -07:00
pnp
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power power supply and reset changes for the v5.13 series 2021-04-28 15:43:58 -07:00
powercap
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pps TTY/Serial driver updates for 5.13-rc1 2021-04-26 11:20:10 -07:00
ps3
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ptp ARM: 2021-05-01 10:14:08 -07:00
pwm pwm: Changes for v5.13-rc1 2021-05-05 12:53:16 -07:00
rapidio
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ras
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regulator - Core Frameworks 2021-04-28 15:59:13 -07:00
remoteproc remoteproc updates for v5.13 2021-05-04 11:13:33 -07:00
reset pci-v5.13-changes 2021-05-05 13:24:11 -07:00
rpmsg
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rtc RTC for 5.13 2021-05-03 12:15:21 -07:00
s390 block-5.13-2021-05-07 2021-05-07 11:35:12 -07:00
sbus
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scsi SCSI misc on 20210508 2021-05-08 10:44:36 -07:00
sh The usual updates from the irq departement: 2021-04-26 09:43:16 -07:00
siox
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slimbus
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soc IOMMU Updates for Linux v5.13 2021-05-01 09:33:00 -07:00
soundwire
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spi sound updates for 5.13 2021-04-30 12:48:14 -07:00
spmi
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ssb
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staging staging: rtl8723bs: avoid bogus gcc warning 2021-05-10 14:26:24 +02:00
target SCSI misc on 20210508 2021-05-08 10:44:36 -07:00
tc
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tee ARM: SoC drivers for v5.13 2021-04-26 12:11:52 -07:00
thermal - Remove duplicate error message for the amlogic driver (Tang Bin) 2021-05-05 12:46:48 -07:00
thunderbolt
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tty tty: vt: always invoke vc->vc_sw->con_resize callback 2021-05-15 08:12:12 -07:00
uio
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usb Driver core fixes for 5.13-rc2 2021-05-16 10:13:14 -07:00
vdpa vDPA/ifcvf: get_config_size should return dev specific config size 2021-05-03 04:55:54 -04:00
vfio IOMMU Updates for Linux v5.13 2021-05-01 09:33:00 -07:00
vhost virtio,vhost,vdpa: features, fixes 2021-05-05 13:31:39 -07:00
video tty: vt: always invoke vc->vc_sw->con_resize callback 2021-05-15 08:12:12 -07:00
virt nitro_enclaves: Fix stale file descriptors on failed usercopy 2021-04-29 19:06:49 +02:00
virtio virtio_pci_modern: correct sparse tags for notify 2021-05-04 04:19:59 -04:00
visorbus
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vlynq
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vme
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w1
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watchdog - Core Frameworks 2021-04-28 15:59:13 -07:00
xen xen/swiotlb: check if the swiotlb has already been initialized 2021-05-14 15:52:11 +02:00
zorro
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Kconfig
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Makefile virtio,vhost,vdpa: features, fixes 2021-05-05 13:31:39 -07:00