On Mon, 2014-04-28 at 19:06 +0200, Denys Vlasenko wrote:
> Otherwise, instructions such as cmpxchg and div will be mishandled.
>
> Signed-off-by: Denys Vlasenko
> CC: Jim Keniston
> CC: Masami Hiramatsu
> CC: Srikar Dronamraju
> CC: Ingo Molnar
> CC: Oleg Nesterov
> ---
> arch/x86/kernel/up
On 04/28/2014 09:23 PM, Oleg Nesterov wrote:
> On 04/28, Denys Vlasenko wrote:
>>
>> On 04/28/2014 07:34 PM, Oleg Nesterov wrote:
>>>
>>> It seems that you are right. But it would be really great if you also
>>> provide the test-case which proves the fix ;)
>>
>> Working on a testcase for this. So
Thanks...
Again, the change in riprel_analyze() needs the review from someone
who understands the instruction decoding/encoding.
On 04/28, Denys Vlasenko wrote:
>
> Otherwise, instructions such as cmpxchg and div will be mishandled.
It seems that you are right. But it would be really great if yo
On 04/28/2014 07:06 PM, Denys Vlasenko wrote:
> + * Note: we can't use rax or rdx registers as scratch!
> + * There are 3-operand insns which use rax or rdx:rax
> + * as an implicit operand, _and_ they use modrm byte
> + * whose reg field indicates third register or opcode exten
On 04/28/2014 07:34 PM, Oleg Nesterov wrote:
> Thanks...
>
> Again, the change in riprel_analyze() needs the review from someone
> who understands the instruction decoding/encoding.
>
> On 04/28, Denys Vlasenko wrote:
>>
>> Otherwise, instructions such as cmpxchg and div will be mishandled.
>
>
On 04/28, Denys Vlasenko wrote:
>
> On 04/28/2014 07:34 PM, Oleg Nesterov wrote:
> >
> > It seems that you are right. But it would be really great if you also
> > provide the test-case which proves the fix ;)
>
> Working on a testcase for this. So far covered div (test1)
> and cmpxchg (test2).
>
>
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