Re: [PATCH] x86: entry_32.S: change ESPFIX test to not touch PT_OLDSS(%esp)

[Andy Lutomirski]

On Mon, Mar 9, 2015 at 8:13 AM, Ingo Molnar <mingo@xxxxxxxxxx> wrote:
>
> * Denys Vlasenko <vda.linux@xxxxxxxxxxxxxx> wrote:
>
>> > That being said, what ends up in the high bits of esp when we iret
>> > to vm86 mode?
>>
>> I don't know. I guess it's time to write an actual vm86 testcase :)
>
> Btw., could you please stick it and your other testcases into
> tools/x86/tests/ or so? Having such a testsuite would ease maintenance
> considerably.
>

My excuse used to be that the test actively exploited really nasty
security issues.  Then it was that I was waiting for the
infrastructure to stabilize a bit.  I'll go see how it's looking now.

--Andy

> Thanks,
>
>         Ingo



-- 
Andy Lutomirski
AMA Capital Management, LLC
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