Re: [Xen-devel] [PATCH v6 08/14] x86: add scheduling support for Intel CAT

2015-04-24 Thread Jan Beulich
>>> On 23.04.15 at 11:55, wrote: > On context switch, write the the domain's Class of Service(COS) to MSR > IA32_PQR_ASSOC, to notify hardware to use the new COS. > > For performance reason, the COS mask for current cpu is also cached in > the local per-CPU variable. > > Signed-off-by: Chao Peng

[Xen-devel] [PATCH v6 08/14] x86: add scheduling support for Intel CAT

2015-04-23 Thread Chao Peng
On context switch, write the the domain's Class of Service(COS) to MSR IA32_PQR_ASSOC, to notify hardware to use the new COS. For performance reason, the COS mask for current cpu is also cached in the local per-CPU variable. Signed-off-by: Chao Peng --- Changes in v5: * Remove the need to cache