KVM: x86: Open code setting/clearing of bits in the ISR

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Remove __apic_test_and_set_vector() and __apic_test_and_clear_vector(),
because the _only_ register that's safe to modify with a non-atomic
operation is ISR, because KVM isn't running the vCPU, i.e. hardware can't
service an IRQ or process an EOI for the relevant (virtual) APIC.

No functional change intended.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
Acked-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20250709033242.267892-2-Neeraj.Upadhyay@amd.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Neeraj Upadhyay 2025-07-09 09:02:08 +05:30 • committed by Sean Christopherson

parent d7b8f8e208

commit ac48017020

1 changed files with 7 additions and 12 deletions

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arch/x86/kvm/lapic.c

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