Re: Sanitize CPU-state when switching tasks (was sanitize CPU-statewhen switching from virtual-8086 mode to other task)

[H. Peter Anvin]

On 01/10/2014 03:16 AM, Linus Torvalds wrote:
> On Fri, Jan 10, 2014 at 6:06 PM, Borislav Petkov <bp@xxxxxxxxx> wrote:
>>
>> Tested-by: Borislav Petkov <bp@xxxxxxx>
> 
> Ok, good.
> 
> Peter, do you want to take it (feel free to add my sign-off), or
> should I just commit it?
> 
> Also, is there a way to have a "likely not true" version of that
> "static_cpu_has()"? There seems to be no way to make the non-K7/K8
> case the fallthrough code.. Not that this is likely that
> performance-critical, but..
> 

I'll take it.

We don't have a "likely not true" version of static_cpu_has() at this
point... it would mean we couldn't do short jumps unfortunately (and
they would still take the false path until alternatives run.)

	-hpa


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