* Christian Borntraeger (borntrae...@de.ibm.com) wrote:
> On 04/27/2017 03:47 PM, Andrea Arcangeli wrote:
> > On Thu, Apr 27, 2017 at 08:44:03AM +0200, Christian Borntraeger wrote:
> >> I have started instrumenting the kernel. I can see a set_pte_at for this
> >> address
> >> and I see an (to be u
On 04/27/2017 03:47 PM, Andrea Arcangeli wrote:
> On Thu, Apr 27, 2017 at 08:44:03AM +0200, Christian Borntraeger wrote:
>> I have started instrumenting the kernel. I can see a set_pte_at for this
>> address
>> and I see an (to be understood) invalidation shortly after that which
>> explains
>> w
On Thu, Apr 27, 2017 at 08:44:03AM +0200, Christian Borntraeger wrote:
> I have started instrumenting the kernel. I can see a set_pte_at for this
> address
> and I see an (to be understood) invalidation shortly after that which explains
> why I get a fault.
Sounds great that you can see an invali
* Juan Quintela (quint...@redhat.com) wrote:
> "Dr. David Alan Gilbert (git)" wrote:
> > From: "Dr. David Alan Gilbert"
> >
> > When an all-zero page is received during the precopy
> > phase of a postcopy-enabled migration we must force
> > allocation otherwise accesses to the page will still
> >
On 04/27/2017 05:20 AM, Peter Xu wrote:
> On Wed, Apr 26, 2017 at 09:37:43PM +0200, Andrea Arcangeli wrote:
>> Hello,
>>
>> On Wed, Apr 26, 2017 at 08:04:43PM +0100, Dr. David Alan Gilbert wrote:
>>> * Christian Borntraeger (borntrae...@de.ibm.com) wrote:
On 04/26/2017 08:37 PM, Dr. David Alan
On Wed, Apr 26, 2017 at 09:37:43PM +0200, Andrea Arcangeli wrote:
> Hello,
>
> On Wed, Apr 26, 2017 at 08:04:43PM +0100, Dr. David Alan Gilbert wrote:
> > * Christian Borntraeger (borntrae...@de.ibm.com) wrote:
> > > On 04/26/2017 08:37 PM, Dr. David Alan Gilbert (git) wrote:
> > > > From: "Dr. Da
On 04/26/2017 09:52 PM, Christian Borntraeger wrote:
> On 04/26/2017 09:04 PM, Dr. David Alan Gilbert wrote:
>> * Christian Borntraeger (borntrae...@de.ibm.com) wrote:
>>> On 04/26/2017 08:37 PM, Dr. David Alan Gilbert (git) wrote:
From: "Dr. David Alan Gilbert"
When an all-zero pag
On 04/26/2017 09:04 PM, Dr. David Alan Gilbert wrote:
> * Christian Borntraeger (borntrae...@de.ibm.com) wrote:
>> On 04/26/2017 08:37 PM, Dr. David Alan Gilbert (git) wrote:
>>> From: "Dr. David Alan Gilbert"
>>>
>>> When an all-zero page is received during the precopy
>>> phase of a postcopy-ena
Hello,
On Wed, Apr 26, 2017 at 08:04:43PM +0100, Dr. David Alan Gilbert wrote:
> * Christian Borntraeger (borntrae...@de.ibm.com) wrote:
> > On 04/26/2017 08:37 PM, Dr. David Alan Gilbert (git) wrote:
> > > From: "Dr. David Alan Gilbert"
> > >
> > > When an all-zero page is received during the p
"Dr. David Alan Gilbert (git)" wrote:
> From: "Dr. David Alan Gilbert"
>
> When an all-zero page is received during the precopy
> phase of a postcopy-enabled migration we must force
> allocation otherwise accesses to the page will still
> get blocked by userfault.
>
> Symptom:
> a) If the page
* Christian Borntraeger (borntrae...@de.ibm.com) wrote:
> On 04/26/2017 08:37 PM, Dr. David Alan Gilbert (git) wrote:
> > From: "Dr. David Alan Gilbert"
> >
> > When an all-zero page is received during the precopy
> > phase of a postcopy-enabled migration we must force
> > allocation otherwise ac
On 04/26/2017 08:37 PM, Dr. David Alan Gilbert (git) wrote:
> From: "Dr. David Alan Gilbert"
>
> When an all-zero page is received during the precopy
> phase of a postcopy-enabled migration we must force
> allocation otherwise accesses to the page will still
> get blocked by userfault.
>
> Sympt
From: "Dr. David Alan Gilbert"
When an all-zero page is received during the precopy
phase of a postcopy-enabled migration we must force
allocation otherwise accesses to the page will still
get blocked by userfault.
Symptom:
a) If the page is accessed by a device during device-load
then we
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