KVM: SVM: Emulate nRIP feature when reinjecting INT3

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When in guest debugging mode, we have to reinject those #BP software
exceptions that are caused by guest-injected INT3. As older AMD
processors do not support the required nRIP VMCB field, try to emulate
it by moving RIP past the instruction on exception injection. Fix it up
again in case the injection failed and we were able to catch this. This
does not work for unintercepted faults, but it is better than doing
nothing.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Jan Kiszka 2010-02-23 17:47:56 +01:00 • committed by Avi Kivity

parent f92653eeb4

commit 66b7138f91

1 changed files with 35 additions and 3 deletions

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arch/x86/kvm/svm.c

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