[Xen-devel] [PATCH 0/3] mwait support for AMD processors

2019-02-25 Thread Woods, Brian
This patch series add support and enablement for mwait on AMD Naples and Rome processors. Newer AMD processors support mwait, but only for c1, and for c2 halt is used. The mwait-idle driver is modified to be able to use both mwait and halt for idling. Brian Woods (3): mwait-idle: add support f

Re: [Xen-devel] [PATCH 0/3] mwait support for AMD processors

2019-02-26 Thread Jan Beulich
>>> On 25.02.19 at 21:23, wrote: > This patch series add support and enablement for mwait on AMD Naples > and Rome processors. Newer AMD processors support mwait, but only for > c1, and for c2 halt is used. The mwait-idle driver is modified to be > able to use both mwait and halt for idling. I

Re: [Xen-devel] [PATCH 0/3] mwait support for AMD processors

2019-02-26 Thread Woods, Brian
On 2/26/19 4:49 AM, Jan Beulich wrote: On 25.02.19 at 21:23, wrote: >> This patch series add support and enablement for mwait on AMD Naples >> and Rome processors. Newer AMD processors support mwait, but only for >> c1, and for c2 halt is used. The mwait-idle driver is modified to be >> abl

Re: [Xen-devel] [PATCH 0/3] mwait support for AMD processors

2019-02-26 Thread Jan Beulich
>>> On 26.02.19 at 17:25, wrote: > Correct me if I'm wrong, but the Xen's acpi-idle implementation is > dependent on dom0 using a AML interpreter and then giving that data back > to Xen. I've heard that this doesn't always work correctly on PV dom0s > and doesn't work at all on PVH dom0s. For

Re: [Xen-devel] [PATCH 0/3] mwait support for AMD processors

2019-02-26 Thread Woods, Brian
On 2/26/19 10:37 AM, Jan Beulich wrote: On 26.02.19 at 17:25, wrote: >> Correct me if I'm wrong, but the Xen's acpi-idle implementation is >> dependent on dom0 using a AML interpreter and then giving that data back >> to Xen. I've heard that this doesn't always work correctly on PV dom0s >>

Re: [Xen-devel] [PATCH 0/3] mwait support for AMD processors

2019-02-27 Thread Jan Beulich
>>> On 26.02.19 at 17:54, wrote: > On 2/26/19 10:37 AM, Jan Beulich wrote: > On 26.02.19 at 17:25, wrote: >>> Correct me if I'm wrong, but the Xen's acpi-idle implementation is >>> dependent on dom0 using a AML interpreter and then giving that data back >>> to Xen. I've heard that this doesn

Re: [Xen-devel] [PATCH 0/3] mwait support for AMD processors

2019-02-27 Thread Woods, Brian
On 2/27/19 2:51 AM, Jan Beulich wrote: On 26.02.19 at 17:54, wrote: >> On 2/26/19 10:37 AM, Jan Beulich wrote: >> On 26.02.19 at 17:25, wrote: Correct me if I'm wrong, but the Xen's acpi-idle implementation is dependent on dom0 using a AML interpreter and then giving that data