a PT page will be released if it doesn't contain any meaningful mappings
during PPGTT page table shrinking. The PT entry in the upper level will
be set to a scratch entry.
Normally this works nicely, but in virtualization world, the PPGTT page
table is tracked by hypervisor. Releasing the PT page
a PT page will be released if it doesn't contain any meaningful mappings
during PPGTT page table shrinking. The PT entry in the upper level will
be set to a scratch entry.
Normally this works nicely, but in virtualization world, the PPGTT page
table is tracked by hypervisor. Releasing the PT page
Hi guys:
Would you mind to have a quick review on this patch? :P The linux
guest under GVT-g couldn't boot up without this patch in the newer kernel.
Thanks,
Zhi.
On 11/21/16 19:44, Zhi Wang wrote:
a PT page will be released if it doesn't contain any meaningful mappings
during PPGTT page
On Tue, Nov 22, 2016 at 09:29:40PM +0800, Zhi Wang wrote:
> Hi guys:
> Would you mind to have a quick review on this patch? :P The
> linux guest under GVT-g couldn't boot up without this patch in the
> newer kernel.
>
> Thanks,
> Zhi.
>
> On 11/21/16 19:44, Zhi Wang wrote:
> >a PT page will b
On Mon, Nov 21, 2016 at 07:44:26PM +0800, Zhi Wang wrote:
> a PT page will be released if it doesn't contain any meaningful mappings
> during PPGTT page table shrinking. The PT entry in the upper level will
> be set to a scratch entry.
>
> Normally this works nicely, but in virtualization world, t
On 2016.11.22 14:38:19 +, Chris Wilson wrote:
> On Tue, Nov 22, 2016 at 09:29:40PM +0800, Zhi Wang wrote:
> > Hi guys:
> > Would you mind to have a quick review on this patch? :P The
> > linux guest under GVT-g couldn't boot up without this patch in the
> > newer kernel.
> >
> > Thanks,
>
Thanks Michał! Have a good day. :P
On 11/22/16 22:39, Michał Winiarski wrote:
On Mon, Nov 21, 2016 at 07:44:26PM +0800, Zhi Wang wrote:
a PT page will be released if it doesn't contain any meaningful mappings
during PPGTT page table shrinking. The PT entry in the upper level will
be set to a sc
Hi Chris, thanks for the reply! Without this patch, we have to do pattern scan
to identify if the page is still being used as a PT page. :( It's complicated.
Originally, all the guest shadow PPGTT pages will be set to write-protected by
HV. When guest makes a change in its page table, it will be
It's also the style how CPU page table is managed...
> From: Wang, Zhi A
> Sent: Wednesday, November 23, 2016 3:37 PM
>
> Hi Chris, thanks for the reply! Without this patch, we have to do pattern
> scan to identify
> if the page is still being used as a PT page. :( It's complicated.
>
> Origina
On Wed, Nov 23, 2016 at 07:43:21AM +, Tian, Kevin wrote:
> It's also the style how CPU page table is managed...
But it is not the style of how the GPU page table behaves, which is what
the code expects. My only concern here is if the fact that the page is
not idle has further rammifactions.
-C
Thanks Chirs and Michal :P Please take this patch. :)
On 11/29/16 14:55, Zhi Wang wrote:
a PT page will be released if it doesn't contain any meaningful mappings
during PPGTT page table shrinking. The PT entry in the upper level will
be set to a scratch entry.
Normally this works nicely, but in
On 29/11/2016 06:55, Zhi Wang wrote:
a PT page will be released if it doesn't contain any meaningful mappings
during PPGTT page table shrinking. The PT entry in the upper level will
be set to a scratch entry.
Normally this works nicely, but in virtualization world, the PPGTT page
table is track
On Tue, Nov 29, 2016 at 08:48:08AM +, Tvrtko Ursulin wrote:
>
> On 29/11/2016 06:55, Zhi Wang wrote:
> >a PT page will be released if it doesn't contain any meaningful mappings
> >during PPGTT page table shrinking. The PT entry in the upper level will
> >be set to a scratch entry.
> >
> >Norma
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