KVM: VMX: Provide separate subroutines for invoking NMI vs. IRQ handlers

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Split the asm subroutines for handling NMIs versus IRQs that occur in the
guest so that the NMI handler can be called from a noinstr section.  As a
bonus, the NMI path doesn't need an indirect branch.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20221213060912.654668-7-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Sean Christopherson 2022-12-13 06:09:11 +00:00

parent 54a3b70a75

commit 4f76e86f7e

2 changed files with 50 additions and 46 deletions

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70

arch/x86/kvm/vmx/vmenter.S

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26

arch/x86/kvm/vmx/vmx.c

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