Re: [Qemu-devel] bug in popcnt emulation with some register operand(s)?

[Andriy Gapon <avg@FreeBSD.org>]

on 11/10/2012 00:09 malc said the following:
> On Thu, 11 Oct 2012, Andriy Gapon wrote:
> 
>> on 08/10/2012 12:02 Andriy Gapon said the following:
>>> on 08/10/2012 10:52 malc said the following:
>>>> On Mon, 8 Oct 2012, Andriy Gapon wrote:
>>>>
>>>>>
>>>>> I am running Qemu (plain, no kvm, etc) on an AMD 10h machine that
>>>>> provides popcnt instruction.  Qemu advertises availability of pocnt
>>>>> to a guest as well.  What I see in the guest that popcnt
>>>>> 0x20(%r12),%r8 instruction actually placed its result into %rax.
>>>>> With %rdi and %rax operands the instruction worked fine though.
>>>>>
>>>>>
>>>>
>>>> Does following work?
>>>
>>> It does!  Thank you very much.
>>
>> Do you plan to commit this fix?
>> Is there anything that I should do to make that happen (sooner)?
>>
> 
> Submit a patch with a well thought out comment and it'll be commited.
> 
> [..snip..]
> 

Hmm... Since you are the author of the patch, wouldn't be more appropriate for
you to submit it?  Besides, I can only mostly repeat the bug report as I do not
quite understand the code and can not properly describe what the patch does.

Sorry for not taking up the work, but I am really just a qemu user.

-- 
Andriy Gapon