Re: [PATCH 0/6] KVM: x86: More emulator bugs

Paolo Bonzini
2014-06-16T10:18:46Z

Il 15/06/2014 15:12, Nadav Amit ha scritto:
> This patch-set resolves several emulator bugs. Each fix is independent of the
> others. The DR6/7 bug can occur during DR-access exit (regardless to
> unrestricted mode, MMIO and SPT).
>
> Thanks for reviewing the patches,
> Nadav
>
> Nadav Amit (6):
> KVM: x86: bit-ops emulation ignores offset on 64-bit
> KVM: x86: Wrong emulation on 'xadd X, X'
> KVM: x86: Inter privilage level ret emulation is not implemeneted
> KVM: x86: emulation of dword cmov on long-mode should clear [63:32]
> KVM: x86: NOP emulation clears (incorrectly) the high 32-bits of RAX
> KVM: x86: check DR6/7 high-bits are clear only on long-mode
>
> arch/x86/kvm/emulate.c | 31 ++++++++++++++++++++-----------
> arch/x86/kvm/x86.c | 13 +++++++++++--
> 2 files changed, 31 insertions(+), 13 deletions(-)
>

I applied these locally. Can you prepare testcases for patches 1, 2, 4
and 5? Perhaps patch 6 too if it's easy to reproduce.

Paolo