linux-kernel - Re: [PATCH v2 0/9] KVM: x86: More emulator bugs

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Date:	Wed, 18 Jun 2014 17:45:13 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Nadav Amit <namit@...technion.ac.il>
CC:	gleb@...nel.org, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, x86@...nel.org, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org
Subject: Re: [PATCH v2 0/9] KVM: x86: More emulator bugs

Il 18/06/2014 16:19, Nadav Amit ha scritto:
> This patch-set resolves several emulator bugs. Each fix is independent of the
> others.  The DR6 bug can occur during DR-access exit (regardless to
> unrestricted mode, MMIO and SPT).
>
>
> Changes in v2:
>
> Introduced kvm_register_readl and kvm_register_writel which consider long-mode
> and cs.l when reading the registers.
>
> Fixing the register read to respect 32/64 bit in hypercall handling, CR exit
> handling and VMX instructions handling.
>
> Thanks for re-reviewing the patch
>
> Nadav Amit (9):
>   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
>   KVM: x86: Hypercall handling does not considers opsize correctly
>   KVM: vmx: handle_cr ignores 32/64-bit mode
>   KVM: vmx: vmx instructions handling does not consider cs.l
>
>  arch/x86/kvm/emulate.c | 31 ++++++++++++++++++++-----------
>  arch/x86/kvm/vmx.c     | 16 ++++++++--------
>  arch/x86/kvm/x86.c     | 11 ++++++-----
>  arch/x86/kvm/x86.h     | 27 +++++++++++++++++++++++++++
>  4 files changed, 61 insertions(+), 24 deletions(-)
>

Thanks, looks good.

Paolo
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