Re: Performance regression in ast drm driver

Hi Thomas, On Tue, 13 Nov 2018 10:23:45 +0100, Thomas Zimmermann wrote: > ast doesn't remove the vesafb's framebuffer before attaching to the > device. I have a patch at [1]. If you have a way of testing it, I'd > appreciate. > > [1] https://bugzilla.suse.com/show_bug.cgi?id=1112963 Thank you ve

Re: Performance regression in ast drm driver

Hi Am 13.11.18 um 13:08 schrieb Jean Delvare: > Hi Thomas, > > On Tue, 13 Nov 2018 10:23:45 +0100, Thomas Zimmermann wrote: >> ast doesn't remove the vesafb's framebuffer before attaching to the >> device. I have a patch at [1]. If you have a way of testing it, I'd >> appreciate. >> >> [1] https:

Re: Performance regression in ast drm driver

Jean, ast doesn't remove the vesafb's framebuffer before attaching to the device. I have a patch at [1]. If you have a way of testing it, I'd appreciate. Best regards Thomas [1] https://bugzilla.suse.com/show_bug.cgi?id=1112963 Am 12.11.18 um 17:41 schrieb Jean Delvare: > On Mon, 2018-11-12 at

Re: Performance regression in ast drm driver

On Mon, 2018-11-12 at 15:45 +0100, Takashi Iwai wrote: > On Mon, 12 Nov 2018 15:36:07 +0100, > Jean Delvare wrote: > > Takashi asked me to compare the contents of > > /sys/kernel/debug/x86/pat_memtype_list before and after the commit > > above. Before the commit, we have: > > > > uncached-minus @

RE: Performance regression in ast drm driver

: Thursday, November 08, 2018 8:05 PM To: Dave Airlie Cc: Christian König ; dri-devel@lists.freedesktop.org; linux-ker...@vger.kernel.org Subject: Re: Performance regression in ast drm driver On Thu, 1 Nov 2018 16:27:07 +0100, Jean Delvare wrote: > Hi David, > > The following

Re: Performance regression in ast drm driver

Hi Jean Am 12.11.18 um 15:36 schrieb Jean Delvare: > Hi David, > > On Fri, 2018-11-09 at 10:04 +1000, David Airlie wrote: >> On Thu, Nov 8, 2018 at 10:05 PM Jean Delvare wrote: >>> >>> On Thu, 1 Nov 2018 16:27:07 +0100, Jean Delvare wrote: Hi David, The following commit:

Re: Performance regression in ast drm driver

Hi David, On Fri, 2018-11-09 at 10:04 +1000, David Airlie wrote: > On Thu, Nov 8, 2018 at 10:05 PM Jean Delvare wrote: > > > > On Thu, 1 Nov 2018 16:27:07 +0100, Jean Delvare wrote: > > > Hi David, > > > > > > The following commit: > > > > > > commit 7cf321d118a825c1541b43ca45294126fd474efa >

Re: Performance regression in ast drm driver

On Mon, 12 Nov 2018 15:36:07 +0100, Jean Delvare wrote: > > Hi David, > > On Fri, 2018-11-09 at 10:04 +1000, David Airlie wrote: > > On Thu, Nov 8, 2018 at 10:05 PM Jean Delvare wrote: > > > > > > On Thu, 1 Nov 2018 16:27:07 +0100, Jean Delvare wrote: > > > > Hi David, > > > > > > > > The foll

Re: Performance regression in ast drm driver

On Fri, 9 Nov 2018 10:04:03 +1000, David Airlie wrote: > This seems likely to be a hw problem with PCI writes to the AST "GPU", > since it's just some sort of RAM + ARM on the end of a PCIE bus, we've > definitely seen possible issues in the past with write combining > around some of the mga GPUs w

Re: Performance regression in ast drm driver

On Thu, 1 Nov 2018 16:27:07 +0100, Jean Delvare wrote: > Hi David, > > The following commit: > > commit 7cf321d118a825c1541b43ca45294126fd474efa > Author: Dave Airlie > Date: Mon Oct 24 15:37:48 2016 +1000 > > drm/drivers: add support for using the arch wc mapping API. > > is causing a hu

Re: Performance regression in ast drm driver

On Thu, Nov 8, 2018 at 10:05 PM Jean Delvare wrote: > > On Thu, 1 Nov 2018 16:27:07 +0100, Jean Delvare wrote: > > Hi David, > > > > The following commit: > > > > commit 7cf321d118a825c1541b43ca45294126fd474efa > > Author: Dave Airlie > > Date: Mon Oct 24 15:37:48 2016 +1000 > > > > drm/driv

Performance regression in ast drm driver

Hi David, The following commit: commit 7cf321d118a825c1541b43ca45294126fd474efa Author: Dave Airlie Date: Mon Oct 24 15:37:48 2016 +1000 drm/drivers: add support for using the arch wc mapping API. is causing a huge performance regression for the ast drm driver. In a text console, if I cal