On 03/16/2010 09:33 PM, Marcelo Tosatti wrote:
How relevant is this for -stable? Races don't sound good to me :)
The race mentioned above is not existant on -stable since prefetch is
disabled for invlpg.
The atomic fixes seem like a candidate, since lack of them can trigger
pagetable co
On Tue, Mar 16, 2010 at 07:22:55PM +0100, Alexander Graf wrote:
>
> On 16.03.2010, at 17:36, Marcelo Tosatti wrote:
>
> > On Mon, Mar 15, 2010 at 01:59:52PM +0200, Avi Kivity wrote:
> >> Currently when we emulate a locked operation into a shadowed guest page
> >> table, we perform a write rather
On 16.03.2010, at 17:36, Marcelo Tosatti wrote:
> On Mon, Mar 15, 2010 at 01:59:52PM +0200, Avi Kivity wrote:
>> Currently when we emulate a locked operation into a shadowed guest page
>> table, we perform a write rather than a true atomic. This is indicated
>> by the "emulating exchange as writ
On Mon, Mar 15, 2010 at 01:59:52PM +0200, Avi Kivity wrote:
> Currently when we emulate a locked operation into a shadowed guest page
> table, we perform a write rather than a true atomic. This is indicated
> by the "emulating exchange as write" message that shows up in dmesg.
>
> In addition, th
Currently when we emulate a locked operation into a shadowed guest page
table, we perform a write rather than a true atomic. This is indicated
by the "emulating exchange as write" message that shows up in dmesg.
In addition, the pte prefetch operation during invlpg suffered from a
race. This was
On 03/15/2010 12:16 PM, Marcelo Tosatti wrote:
On Sun, Mar 14, 2010 at 09:03:47AM +0200, Avi Kivity wrote:
On 03/10/2010 04:50 PM, Avi Kivity wrote:
Currently when we emulate a locked operation into a shadowed guest page
table, we perform a write rather than a true atomic. This is in
On Sun, Mar 14, 2010 at 09:03:47AM +0200, Avi Kivity wrote:
> On 03/10/2010 04:50 PM, Avi Kivity wrote:
> >Currently when we emulate a locked operation into a shadowed guest page
> >table, we perform a write rather than a true atomic. This is indicated
> >by the "emulating exchange as write" messa
On 03/10/2010 04:50 PM, Avi Kivity wrote:
Currently when we emulate a locked operation into a shadowed guest page
table, we perform a write rather than a true atomic. This is indicated
by the "emulating exchange as write" message that shows up in dmesg.
In addition, the pte prefetch operation d
Currently when we emulate a locked operation into a shadowed guest page
table, we perform a write rather than a true atomic. This is indicated
by the "emulating exchange as write" message that shows up in dmesg.
In addition, the pte prefetch operation during invlpg suffered from a
race. This was
