KVM: inject NMI after IRET from a previous NMI, not before.

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If NMI is received during handling of another NMI it should be injected
immediately after IRET from previous NMI handler, but SVM intercept IRET
before instruction execution so we can't inject pending NMI at this
point and there is not way to request exit when NMI window opens. This
patch fix SVM code to open NMI window after IRET by single stepping over
IRET instruction.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Gleb Natapov 2009-05-11 13:35:52 +03:00 • committed by Avi Kivity

parent 6a8b1d1312

commit 44c11430b5

2 changed files with 52 additions and 12 deletions

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2

arch/x86/include/asm/kvm_host.h

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62

arch/x86/kvm/svm.c

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