On 25/08/2021 15:36, Jan Beulich wrote:
> On 25.08.2021 14:12, Andrew Cooper wrote:
>> On 24/08/2021 14:04, Jan Beulich wrote:
>>> On 19.08.2021 18:26, Andrew Cooper wrote:
In some configurations, it is safe to not overwrite the RSB on entry to
Xen.
Both Intel and AMD have guideline
On 25.08.2021 14:12, Andrew Cooper wrote:
> On 24/08/2021 14:04, Jan Beulich wrote:
>> On 19.08.2021 18:26, Andrew Cooper wrote:
>>> In some configurations, it is safe to not overwrite the RSB on entry to Xen.
>>> Both Intel and AMD have guidelines in this area, because of the performance
>>> diffe
On 24/08/2021 14:04, Jan Beulich wrote:
> On 19.08.2021 18:26, Andrew Cooper wrote:
>> In some configurations, it is safe to not overwrite the RSB on entry to Xen.
>> Both Intel and AMD have guidelines in this area, because of the performance
>> difference it makes for native kernels.
> I don't thi
On 19.08.2021 18:26, Andrew Cooper wrote:
> In some configurations, it is safe to not overwrite the RSB on entry to Xen.
> Both Intel and AMD have guidelines in this area, because of the performance
> difference it makes for native kernels.
I don't think I've come across AMD's guidelines - would y
In some configurations, it is safe to not overwrite the RSB on entry to Xen.
Both Intel and AMD have guidelines in this area, because of the performance
difference it makes for native kernels.
A simple microperf test, measuring the amount of time a XENVER_version
hypercall takes, shows the followi
