On Fri, May 07, 2010 at 04:25:36PM +0800, Lai Jiangshan wrote:
> Subject: [PATCH] kvm, tdp: calculate correct base gfn for non-DIR level
>
> the base gfn calculation is incorrect in __direct_map(),
> it does not calculate correctly when level=3 or 4.
>
> Signed-off-by: Lai Jiangshan
> Reported-b
Marcelo Tosatti wrote:
> On Thu, May 06, 2010 at 03:03:48PM +0800, Lai Jiangshan wrote:
>> Marcelo Tosatti wrote:
>>> On Thu, Apr 29, 2010 at 09:43:40PM +0300, Avi Kivity wrote:
On 04/29/2010 09:09 PM, Marcelo Tosatti wrote:
> You missed quadrant on 4mb large page emulation with shadow (se
On Thu, May 06, 2010 at 03:03:48PM +0800, Lai Jiangshan wrote:
> Marcelo Tosatti wrote:
> > On Thu, Apr 29, 2010 at 09:43:40PM +0300, Avi Kivity wrote:
> >> On 04/29/2010 09:09 PM, Marcelo Tosatti wrote:
> >>> You missed quadrant on 4mb large page emulation with shadow (see updated
> >>> patch belo
Marcelo Tosatti wrote:
> On Thu, Apr 29, 2010 at 09:43:40PM +0300, Avi Kivity wrote:
>> On 04/29/2010 09:09 PM, Marcelo Tosatti wrote:
>>> You missed quadrant on 4mb large page emulation with shadow (see updated
>>> patch below).
>> Good catch.
>>
>>> Also for some reason i can't understand the ass
On Thu, Apr 29, 2010 at 09:43:40PM +0300, Avi Kivity wrote:
> On 04/29/2010 09:09 PM, Marcelo Tosatti wrote:
> >
> >You missed quadrant on 4mb large page emulation with shadow (see updated
> >patch below).
>
> Good catch.
>
> >Also for some reason i can't understand the assumption
> >does not hol
On 04/29/2010 09:09 PM, Marcelo Tosatti wrote:
You missed quadrant on 4mb large page emulation with shadow (see updated
patch below).
Good catch.
Also for some reason i can't understand the assumption
does not hold for large sptes with TDP, so reverted for now.
It's unrelated to TDP, s
On Wed, Apr 28, 2010 at 07:57:01PM +0800, Lai Jiangshan wrote:
>
> I think users will enable tdp when their hardwares support ept or npt.
> This patch can reduce about 50% kvm mmu memory usage for they.
>
> This simple patch use the fact that:
>
> When sp->role.direct is set, sp->gfns does not c
On 04/30/2010 11:54 AM, Lai Jiangshan wrote:
Avi Kivity wrote:
On 04/30/2010 05:25 AM, Lai Jiangshan wrote:
It's unrelated to TDP, same issue with shadow. I think the calculation
is correct. For example the 4th spte for a level=2 page will yield
gfn=4*512.
Avi, M
On 04/30/2010 05:25 AM, Lai Jiangshan wrote:
It's unrelated to TDP, same issue with shadow. I think the calculation
is correct. For example the 4th spte for a level=2 page will yield
gfn=4*512.
Avi, Marcelo
Thank you very much.
The calculation I used is correct.
Yes. btw, can y
On Wed, Apr 28, 2010 at 07:57:01PM +0800, Lai Jiangshan wrote:
>
> I think users will enable tdp when their hardwares support ept or npt.
> This patch can reduce about 50% kvm mmu memory usage for they.
>
> This simple patch use the fact that:
>
> When sp->role.direct is set, sp->gfns does not c
On 04/28/2010 02:57 PM, Lai Jiangshan wrote:
I think users will enable tdp when their hardwares support ept or npt.
This patch can reduce about 50% kvm mmu memory usage for they.
Good one!
--
error compiling committee.c: too many arguments to function
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I think users will enable tdp when their hardwares support ept or npt.
This patch can reduce about 50% kvm mmu memory usage for they.
This simple patch use the fact that:
When sp->role.direct is set, sp->gfns does not contain any essential
information, leaf sptes reachable from this sp are for a
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