Sean Christopherson 2967178d30 x86/irq: Ensure initial PIR loads are performed exactly once ...

[ Upstream commit 600e960604 ]

Ensure the PIR is read exactly once at the start of handle_pending_pir(),
to guarantee that checking for an outstanding posted interrupt in a given
chuck doesn't reload the chunk from the "real" PIR.  Functionally, a reload
is benign, but it would defeat the purpose of pre-loading into a copy.

Fixes: 1b03d82ba1 ("x86/irq: Install posted MSI notification handler")
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20250401163447.846608-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-06-19 15:32:04 +02:00

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alpha

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arc

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arm

ARM: aspeed: Don't select SRAM

2025-06-19 15:32:03 +02:00

arm64

arm64: dts: mt6359: Rename RTC node to match binding expectations

2025-06-19 15:32:03 +02:00

csky

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hexagon

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loongarch

Fix mis-uses of 'cc-option' for warning disablement

2025-05-29 11:03:25 +02:00

m68k

m68k: mac: Fix macintosh_config for Mac II

2025-06-19 15:31:36 +02:00

microblaze

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mips

MIPS: pm-cps: Use per-CPU variables as per-CPU, not per-core

2025-05-29 11:02:41 +02:00

nios2

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openrisc

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parisc

net: Fix the devmem sock opts and msgs for parisc

2025-05-09 09:50:49 +02:00

powerpc

powerpc/pseries/iommu: Fix kmemleak in TCE table userspace view

2025-06-19 15:31:29 +02:00

riscv

RISC-V: KVM: lock the correct mp_state during reset

2025-06-19 15:31:53 +02:00

s390

s390/bpf: Store backchain even for leaf progs

2025-06-19 15:31:49 +02:00

sh

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sparc

sparc/mm: avoid calling arch_enter/leave_lazy_mmu() in set_ptes

2025-04-20 10:15:48 +02:00

um

um: let 'make clean' properly clean underlying SUBARCH as well

2025-06-04 14:43:52 +02:00

x86

x86/irq: Ensure initial PIR loads are performed exactly once

2025-06-19 15:32:04 +02:00

xtensa

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.gitignore

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Kconfig

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