KVM: x86: IN instruction emulation should ignore REP-prefix

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The IN instruction is not be affected by REP-prefix as INS is.  Therefore, the
emulation should ignore the REP prefix as well.  The current emulator
implementation tries to perform writeback when IN instruction with REP-prefix
is emulated. This causes it to perform wrong memory write or spurious #GP
exception to be injected to the guest.

Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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Nadav Amit 2014-04-18 03:35:10 +03:00 • committed by Marcelo Tosatti

parent 346874c950

commit e6e39f0438

1 changed files with 2 additions and 1 deletions

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arch/x86/kvm/emulate.c

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