Re: [Xen-devel] RIP MTRR - status update for upcoming v4.2

2015-06-14 Thread Jan Beulich
>>> On 13.06.15 at 01:15, wrote: > On Jun 12, 2015 12:59 AM, "Jan Beulich" wrote: >> >> >>> On 12.06.15 at 01:23, wrote: >> > There are two usages on MTRRs: >> > 1) MTRR entries set by firmware >> > 2) MTRR entries set by

Re: [Xen-devel] RIP MTRR - status update for upcoming v4.2

2015-06-12 Thread Jan Beulich
>>> On 12.06.15 at 01:23, wrote: > There are two usages on MTRRs: > 1) MTRR entries set by firmware > 2) MTRR entries set by OS drivers > > We can obsolete 2), but we have no control over 1). As UEFI firmwares > also set this up, this usage will continue to stay. So, we should not > get rid o