Re: [PATCH][v7] x86, suspend: Save/restore extra MSR registers for suspend

Hi Len, On Wed, May 25, 2016 at 12:09 AM, Len Brown wrote: > +mjg59, who may be seeing this issue on a skylake laptop > > Chen-yu, > > Great debugging, but I think there is a more general fix possible than > this DMI quirk. > > I agree that in this example, a grantley server, it

Re: [PATCH][v7] x86, suspend: Save/restore extra MSR registers for suspend

Hi Len, On Wed, May 25, 2016 at 12:09 AM, Len Brown wrote: > +mjg59, who may be seeing this issue on a skylake laptop > > Chen-yu, > > Great debugging, but I think there is a more general fix possible than > this DMI quirk. > > I agree that in this example, a grantley server, it seems the BIOS

Re: [PATCH][v7] x86, suspend: Save/restore extra MSR registers for suspend

+mjg59, who may be seeing this issue on a skylake laptop Chen-yu, Great debugging, but I think there is a more general fix possible than this DMI quirk. I agree that in this example, a grantley server, it seems the BIOS is erroneously returning a bogus value of MSR_IA32_THERM_CONTROL on resume

Re: [PATCH][v7] x86, suspend: Save/restore extra MSR registers for suspend

+mjg59, who may be seeing this issue on a skylake laptop Chen-yu, Great debugging, but I think there is a more general fix possible than this DMI quirk. I agree that in this example, a grantley server, it seems the BIOS is erroneously returning a bogus value of MSR_IA32_THERM_CONTROL on resume

RE: [PATCH][v7] x86, suspend: Save/restore extra MSR registers for suspend

ucw.cz; Brown, Len; l...@kernel.org; > b...@suse.de; li...@horizon.com; Kaszewski, Marcin; linux- > p...@vger.kernel.org; x...@kernel.org; linux-kernel@vger.kernel.org > Subject: Re: [PATCH][v7] x86, suspend: Save/restore extra MSR registers for > suspend > > > * Chen Yu wrote:

Re: [PATCH][v7] x86, suspend: Save/restore extra MSR registers for suspend

* Chen Yu wrote: > A bug was reported that on certain Broadwell platforms, after resuming from > S3, > the CPU is running at an anomalously low speed. > > It turns out that the BIOS has modified the value of the THERM_CONTROL > register > during S3, and changed it from 0 to 0x10, thus

Re: [PATCH][v7] x86, suspend: Save/restore extra MSR registers for suspend

* Chen Yu wrote: > A bug was reported that on certain Broadwell platforms, after resuming from > S3, > the CPU is running at an anomalously low speed. > > It turns out that the BIOS has modified the value of the THERM_CONTROL > register > during S3, and changed it from 0

RE: [PATCH][v7] x86, suspend: Save/restore extra MSR registers for suspend

ucw.cz; Brown, Len; l...@kernel.org; > b...@suse.de; li...@horizon.com; Kaszewski, Marcin; linux- > p...@vger.kernel.org; x...@kernel.org; linux-kernel@vger.kernel.org > Subject: Re: [PATCH][v7] x86, suspend: Save/restore extra MSR registers for > suspend > > > * Chen Yu <yu.c.c..