KVM: x86: Allow marking an exception as reinjected

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This patch adds logic to kvm/x86 which allows to mark an
injected exception as reinjected. This allows to remove an
ugly hack from svm_complete_interrupts that prevented
exceptions from being reinjected at all in the nested case.
The hack was necessary because an reinjected exception into
the nested guest could cause a nested vmexit emulation. But
reinjected exceptions must not intercept. The downside of
the hack is that a exception that in injected could get
lost.
This patch fixes the problem and puts the code for it into
generic x86 files because. Nested-VMX will likely have the
same problem and could reuse the code.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

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This commit is contained in:

Joerg Roedel 2010-04-22 12:33:13 +02:00 • committed by Avi Kivity

parent c2c63a4939

commit ce7ddec4bb

4 changed files with 32 additions and 12 deletions

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6

arch/x86/include/asm/kvm_host.h

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12

arch/x86/kvm/svm.c

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3

arch/x86/kvm/vmx.c

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23

arch/x86/kvm/x86.c

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