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Re: [PATCH] KVM: x86: emulate: correct page fault error code for NoWrite instructions

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Wanpeng Li <kernellwp@gmail.com> wrote:

> 2015-11-20 10:52 GMT+08:00 Wanpeng Li <kernellwp@gmail.com>:
>> Hi Paolo,
>> 2015-02-09 17:03 GMT+08:00 Paolo Bonzini <pbonzini@redhat.com>:
>>> NoWrite instructions (e.g. cmp or test) never set the "write access"
>>> bit in the error code, even if one of the operands is treated as a
>>> destination.
>> 
>> Sorry to reply to an old commit, btw, could you point out where in SDM
>> describe above?
> 
> I see.

I don’t understand whether you still need my help, so to clarify: on a
page-fault the error code should indicate whether the access was due to a
write access. Previously KVM marked it as “write access” for instructions
such as test and cmp that do not perform write.

Nadav--
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Re: [PATCH] KVM: x86: emulate: correct page fault error code for  NoWrite instructions Wanpeng Li <kernellwp@gmail.com> - 2015-11-20 04:00 +0100
  Re: [PATCH] KVM: x86: emulate: correct page fault error code for  NoWrite instructions Wanpeng Li <kernellwp@gmail.com> - 2015-11-20 04:30 +0100
    Re: [PATCH] KVM: x86: emulate: correct page fault error code for NoWrite instructions Nadav Amit <nadav.amit@gmail.com> - 2015-11-20 08:50 +0100

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