Re: [Xen-devel] XSAVE/XRSTOR crash resurgence in 4.3

[Ben Guthro <ben.guthro@xxxxxxxxx>]

On Fri, Jul 12, 2013 at 9:38 AM, Jan Beulich <JBeulich@xxxxxxxx> wrote:
>>>> On 12.07.13 at 15:11, Ben Guthro <ben.guthro@xxxxxxxxx> wrote:
>> The odd part is, that in this failing case - this machine does not
>> seem to be printing these debug messages at all.
>>
>> Is this the only path this can go through for xsave, or are there others?
>
> For xsave that's the only one. On systems not supporting xsave, it
> would go through the (not instrumented) fxsave path instead. But
> if we know that the system uses xsave, yet none of the messages
> gets printed, that's also a valuable piece of information.

It at least has the xsave cpuid leaf in /proc/cpuinfo

Is there something else in the Xen log I should look for to know that
Xen is actually using xsave?

>
> Jan
>

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