Re: [PATCH DEBUG] x86, pat/mtrr: MTRR/PAT init earlier for each APs

2017-01-15 Thread Chen Yu
Hi experts, do you have any clue on this? thanks. On Tue, Dec 20, 2016 at 06:21:28PM +0800, Chen Yu wrote: > This is a debug patch to descibe/workaround the issue > we encountered recently. > > Problem and the cause: > Currently we are suffering from *extremely* slow CPU online > speed during sys

Re: [PATCH DEBUG] x86, pat/mtrr: MTRR/PAT init earlier for each APs

2016-12-21 Thread Lukas Wunner
On Wed, Dec 21, 2016 at 02:51:02PM +0800, Chen Yu wrote: > On Tue, Dec 20, 2016 at 11:56:51AM +0100, Lukas Wunner wrote: > > On Tue, Dec 20, 2016 at 06:21:28PM +0800, Chen Yu wrote: > > > This is a debug patch to descibe/workaround the issue > > > we encountered recently. > > > > > > Problem and t

Re: [PATCH DEBUG] x86, pat/mtrr: MTRR/PAT init earlier for each APs

2016-12-20 Thread Chen Yu
On Tue, Dec 20, 2016 at 11:56:51AM +0100, Lukas Wunner wrote: > On Tue, Dec 20, 2016 at 06:21:28PM +0800, Chen Yu wrote: > > This is a debug patch to descibe/workaround the issue > > we encountered recently. > > > > Problem and the cause: > > Currently we are suffering from *extremely* slow CPU on

Re: [PATCH DEBUG] x86, pat/mtrr: MTRR/PAT init earlier for each APs

2016-12-20 Thread Chen Yu
On Tue, Dec 20, 2016 at 11:56:51AM +0100, Lukas Wunner wrote: Hi Lukas, > On Tue, Dec 20, 2016 at 06:21:28PM +0800, Chen Yu wrote: > > This is a debug patch to descibe/workaround the issue > > we encountered recently. > > > > Problem and the cause: > > Currently we are suffering from *extremely* s

Re: [PATCH DEBUG] x86, pat/mtrr: MTRR/PAT init earlier for each APs

2016-12-20 Thread Lukas Wunner
On Tue, Dec 20, 2016 at 06:21:28PM +0800, Chen Yu wrote: > This is a debug patch to descibe/workaround the issue > we encountered recently. > > Problem and the cause: > Currently we are suffering from *extremely* slow CPU online > speed during system resuming from S3. Say, the MacBookPro 2015 > ha