From: Wei Yongjun <yjwei@cn.fujitsu.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Avi Kivity <avi@redhat.com>, kvm@vger.kernel.org
Subject: Re: [PATCH] KVM: x86 emulator: cleanup for BitOp instruction emulation
Date: Wed, 04 Aug 2010 17:36:18 +0800 [thread overview]
Message-ID: <4C593492.1050008@cn.fujitsu.com> (raw)
In-Reply-To: <4C593257.2090702@redhat.com>
> On 08/04/2010 11:01 AM, Wei Yongjun wrote:
>
>> Signed-off-by: Wei Yongjun<yjwei@cn.fujitsu.com>
>> ---
>> arch/x86/kvm/emulate.c | 12 ++++--------
>> 1 files changed, 4 insertions(+), 8 deletions(-)
>>
>> diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
>> index eba5a67..c05a5d7 100644
>> --- a/arch/x86/kvm/emulate.c
>> +++ b/arch/x86/kvm/emulate.c
>> @@ -2545,6 +2545,10 @@ done_prefixes:
>> break;
>> }
>>
>> + /* Only subword offset for BitOp: bt/bts/btr/btc. */
>> + if (c->d& BitOp)
>> + c->src.val&= (c->op_bytes<< 3) - 1;
>> +
>>
> You are doing this before the destination operand is decoded, which
> means you are not adjusting a memory operand anymore if c->src.val >
> (c->op_bytes * 8).
>
Oh, I forgot this, I will fix it, thanks.
next prev parent reply other threads:[~2010-08-04 9:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-04 8:27 [PATCH] KVM: x86 emulator: fix group 8 instruction decoding Wei Yongjun
2010-08-04 9:01 ` [PATCH] KVM: x86 emulator: cleanup for BitOp instruction emulation Wei Yongjun
2010-08-04 9:26 ` Paolo Bonzini
2010-08-04 9:36 ` Wei Yongjun [this message]
2010-08-04 9:37 ` [PATCHv2] " Wei Yongjun
2010-08-04 9:45 ` Paolo Bonzini
2010-08-04 9:41 ` [PATCH] KVM: x86 emulator: fix group 8 instruction decoding Paolo Bonzini
2010-08-05 6:07 ` [PATCHv3] KVM: x86 emulator: fix BitOp instruction emulation Wei Yongjun
2010-08-05 9:05 ` [PATCH] KVM: x86 emulator: fix group 8 instruction decoding Avi Kivity
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