* Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
[not found] ` <20130301121444.GC31649@hansolo.jdub.homelinux.org>
@ 2013-03-13 13:25 ` Boris Ostrovsky
2013-03-13 13:44 ` Josh Boyer
0 siblings, 1 reply; 7+ messages in thread
From: Boris Ostrovsky @ 2013-03-13 13:25 UTC (permalink / raw)
To: Josh Boyer
Cc: H. Peter Anvin, Borislav Petkov, mingo, tglx, konrad.wilk,
rostedt, gregkh, samu.kallio, kraman, xen-devel, linux-kernel,
stable
On 03/01/2013 07:14 AM, Josh Boyer wrote:
> On Thu, Feb 28, 2013 at 04:52:20PM -0800, H. Peter Anvin wrote:
>> On 02/28/2013 04:42 PM, Josh Boyer wrote:
>>> On Fri, Mar 01, 2013 at 01:36:29AM +0100, Borislav Petkov wrote:
>>>> On Thu, Feb 28, 2013 at 04:15:45PM -0800, H. Peter Anvin wrote:
>>>>>> I'll try to get someone to test this tomorrow.
>>>> Btw, you'd need to apply that other patch too
>>>>
>>>> http://marc.info/?l=xen-devel&m=136206183814547&w=2
>>>>
>>>> so that arch_flush_lazy_mmu_mode() has at least one caller on x86_64.
>>> Yeah, we already have that applied. It stops crashes in xen
>>> environments so we pulled it in as a bugfix. Thanks though!
>>>
>> Who are "we"?
> Sorry, Fedora. That patch has a link to a bug in it. We applied the
> patch for that bug. I'll apply Boris' patch on top and get the same
> people to test it.
Josh, have you had a chance to test this?
-boris
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
2013-03-13 13:25 ` [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal Boris Ostrovsky
@ 2013-03-13 13:44 ` Josh Boyer
2013-03-21 14:07 ` Konrad Rzeszutek Wilk
0 siblings, 1 reply; 7+ messages in thread
From: Josh Boyer @ 2013-03-13 13:44 UTC (permalink / raw)
To: Boris Ostrovsky
Cc: H. Peter Anvin, Borislav Petkov, mingo, tglx, konrad.wilk,
rostedt, gregkh, samu.kallio, kraman, xen-devel, linux-kernel,
stable
On Wed, Mar 13, 2013 at 09:25:44AM -0400, Boris Ostrovsky wrote:
> On 03/01/2013 07:14 AM, Josh Boyer wrote:
> >On Thu, Feb 28, 2013 at 04:52:20PM -0800, H. Peter Anvin wrote:
> >>On 02/28/2013 04:42 PM, Josh Boyer wrote:
> >>>On Fri, Mar 01, 2013 at 01:36:29AM +0100, Borislav Petkov wrote:
> >>>>On Thu, Feb 28, 2013 at 04:15:45PM -0800, H. Peter Anvin wrote:
> >>>>>>I'll try to get someone to test this tomorrow.
> >>>>Btw, you'd need to apply that other patch too
> >>>>
> >>>>http://marc.info/?l=xen-devel&m=136206183814547&w=2
> >>>>
> >>>>so that arch_flush_lazy_mmu_mode() has at least one caller on x86_64.
> >>>Yeah, we already have that applied. It stops crashes in xen
> >>>environments so we pulled it in as a bugfix. Thanks though!
> >>>
> >>Who are "we"?
> >Sorry, Fedora. That patch has a link to a bug in it. We applied the
> >patch for that bug. I'll apply Boris' patch on top and get the same
> >people to test it.
>
> Josh, have you had a chance to test this?
I've tested it on bare metal for a while now. No problems noticed at
all. I've not heard back from Krishna who was testing it in the Xen
environment. Krishna?
josh
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
2013-03-13 13:44 ` Josh Boyer
@ 2013-03-21 14:07 ` Konrad Rzeszutek Wilk
0 siblings, 0 replies; 7+ messages in thread
From: Konrad Rzeszutek Wilk @ 2013-03-21 14:07 UTC (permalink / raw)
To: Josh Boyer, stefan.bader
Cc: Boris Ostrovsky, H. Peter Anvin, Borislav Petkov, mingo, tglx,
rostedt, gregkh, samu.kallio, kraman, xen-devel, linux-kernel,
stable
On Wed, Mar 13, 2013 at 09:44:43AM -0400, Josh Boyer wrote:
> On Wed, Mar 13, 2013 at 09:25:44AM -0400, Boris Ostrovsky wrote:
> > On 03/01/2013 07:14 AM, Josh Boyer wrote:
> > >On Thu, Feb 28, 2013 at 04:52:20PM -0800, H. Peter Anvin wrote:
> > >>On 02/28/2013 04:42 PM, Josh Boyer wrote:
> > >>>On Fri, Mar 01, 2013 at 01:36:29AM +0100, Borislav Petkov wrote:
> > >>>>On Thu, Feb 28, 2013 at 04:15:45PM -0800, H. Peter Anvin wrote:
> > >>>>>>I'll try to get someone to test this tomorrow.
> > >>>>Btw, you'd need to apply that other patch too
> > >>>>
> > >>>>http://marc.info/?l=xen-devel&m=136206183814547&w=2
> > >>>>
> > >>>>so that arch_flush_lazy_mmu_mode() has at least one caller on x86_64.
> > >>>Yeah, we already have that applied. It stops crashes in xen
> > >>>environments so we pulled it in as a bugfix. Thanks though!
> > >>>
> > >>Who are "we"?
> > >Sorry, Fedora. That patch has a link to a bug in it. We applied the
> > >patch for that bug. I'll apply Boris' patch on top and get the same
> > >people to test it.
> >
> > Josh, have you had a chance to test this?
>
> I've tested it on bare metal for a while now. No problems noticed at
> all. I've not heard back from Krishna who was testing it in the Xen
> environment. Krishna?
Roping in Stephan from Canonical as they are seeing it on a regular basis
and is affecting their distro.
Stephan - there are two patches for it - the paravirt of lazy_mmu mode
and then the other one.
This thread should provide the right URLs (I hope). Could you (if it is possible)
try them out and see if they fix the issue?
>
> josh
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
@ 2013-03-20 13:53 Boris Ostrovsky
2013-03-21 0:08 ` Josh Boyer
0 siblings, 1 reply; 7+ messages in thread
From: Boris Ostrovsky @ 2013-03-20 13:53 UTC (permalink / raw)
To: jwboyer
Cc: mingo, konrad.wilk, tglx, rostedt, kraman, gregkh, stable, bp,
samu.kallio, xen-devel, linux-kernel, hpa
----- jwboyer@redhat.com wrote:
> On Wed, Mar 13, 2013 at 09:25:44AM -0400, Boris Ostrovsky wrote:
> > On 03/01/2013 07:14 AM, Josh Boyer wrote:
> > >On Thu, Feb 28, 2013 at 04:52:20PM -0800, H. Peter Anvin wrote:
> > >>On 02/28/2013 04:42 PM, Josh Boyer wrote:
> > >>>On Fri, Mar 01, 2013 at 01:36:29AM +0100, Borislav Petkov wrote:
> > >>>>On Thu, Feb 28, 2013 at 04:15:45PM -0800, H. Peter Anvin wrote:
> > >>>>>>I'll try to get someone to test this tomorrow.
> > >>>>Btw, you'd need to apply that other patch too
> > >>>>
> > >>>>http://marc.info/?l=xen-devel&m=136206183814547&w=2
> > >>>>
> > >>>>so that arch_flush_lazy_mmu_mode() has at least one caller on
> x86_64.
> > >>>Yeah, we already have that applied. It stops crashes in xen
> > >>>environments so we pulled it in as a bugfix. Thanks though!
> > >>>
> > >>Who are "we"?
> > >Sorry, Fedora. That patch has a link to a bug in it. We applied
> the
> > >patch for that bug. I'll apply Boris' patch on top and get the
> same
> > >people to test it.
> >
> > Josh, have you had a chance to test this?
>
> I've tested it on bare metal for a while now. No problems noticed at
> all. I've not heard back from Krishna who was testing it in the Xen
> environment. Krishna?
Any updates?
Thanks.
-boris
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
2013-03-20 13:53 Boris Ostrovsky
@ 2013-03-21 0:08 ` Josh Boyer
2013-03-22 20:09 ` Konrad Rzeszutek Wilk
0 siblings, 1 reply; 7+ messages in thread
From: Josh Boyer @ 2013-03-21 0:08 UTC (permalink / raw)
To: Boris Ostrovsky
Cc: mingo, konrad.wilk, tglx, rostedt, kraman, gregkh, stable, bp,
samu.kallio, xen-devel, linux-kernel, hpa
On Wed, Mar 20, 2013 at 06:53:55AM -0700, Boris Ostrovsky wrote:
>
> ----- jwboyer@redhat.com wrote:
>
> > On Wed, Mar 13, 2013 at 09:25:44AM -0400, Boris Ostrovsky wrote:
> > > On 03/01/2013 07:14 AM, Josh Boyer wrote:
> > > >On Thu, Feb 28, 2013 at 04:52:20PM -0800, H. Peter Anvin wrote:
> > > >>On 02/28/2013 04:42 PM, Josh Boyer wrote:
> > > >>>On Fri, Mar 01, 2013 at 01:36:29AM +0100, Borislav Petkov wrote:
> > > >>>>On Thu, Feb 28, 2013 at 04:15:45PM -0800, H. Peter Anvin wrote:
> > > >>>>>>I'll try to get someone to test this tomorrow.
> > > >>>>Btw, you'd need to apply that other patch too
> > > >>>>
> > > >>>>http://marc.info/?l=xen-devel&m=136206183814547&w=2
> > > >>>>
> > > >>>>so that arch_flush_lazy_mmu_mode() has at least one caller on
> > x86_64.
> > > >>>Yeah, we already have that applied. It stops crashes in xen
> > > >>>environments so we pulled it in as a bugfix. Thanks though!
> > > >>>
> > > >>Who are "we"?
> > > >Sorry, Fedora. That patch has a link to a bug in it. We applied
> > the
> > > >patch for that bug. I'll apply Boris' patch on top and get the
> > same
> > > >people to test it.
> > >
> > > Josh, have you had a chance to test this?
> >
> > I've tested it on bare metal for a while now. No problems noticed at
> > all. I've not heard back from Krishna who was testing it in the Xen
> > environment. Krishna?
>
>
> Any updates?
No. I've still not heard from Krishna.
At this point I've tested it on bare metal quite a bit, and Konrad has
tested it on both bare metal and Xen. That should already cover the
case Krishna was going to test anyway. I suggest we move forward and
take the patch.
josh
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
2013-03-21 0:08 ` Josh Boyer
@ 2013-03-22 20:09 ` Konrad Rzeszutek Wilk
2013-03-22 20:25 ` H. Peter Anvin
0 siblings, 1 reply; 7+ messages in thread
From: Konrad Rzeszutek Wilk @ 2013-03-22 20:09 UTC (permalink / raw)
To: Josh Boyer, hpa
Cc: Boris Ostrovsky, mingo, tglx, rostedt, kraman, gregkh, stable, bp,
samu.kallio, xen-devel, linux-kernel, hpa
On Wed, Mar 20, 2013 at 08:08:45PM -0400, Josh Boyer wrote:
> On Wed, Mar 20, 2013 at 06:53:55AM -0700, Boris Ostrovsky wrote:
> >
> > ----- jwboyer@redhat.com wrote:
> >
> > > On Wed, Mar 13, 2013 at 09:25:44AM -0400, Boris Ostrovsky wrote:
> > > > On 03/01/2013 07:14 AM, Josh Boyer wrote:
> > > > >On Thu, Feb 28, 2013 at 04:52:20PM -0800, H. Peter Anvin wrote:
> > > > >>On 02/28/2013 04:42 PM, Josh Boyer wrote:
> > > > >>>On Fri, Mar 01, 2013 at 01:36:29AM +0100, Borislav Petkov wrote:
> > > > >>>>On Thu, Feb 28, 2013 at 04:15:45PM -0800, H. Peter Anvin wrote:
> > > > >>>>>>I'll try to get someone to test this tomorrow.
> > > > >>>>Btw, you'd need to apply that other patch too
> > > > >>>>
> > > > >>>>http://marc.info/?l=xen-devel&m=136206183814547&w=2
> > > > >>>>
> > > > >>>>so that arch_flush_lazy_mmu_mode() has at least one caller on
> > > x86_64.
> > > > >>>Yeah, we already have that applied. It stops crashes in xen
> > > > >>>environments so we pulled it in as a bugfix. Thanks though!
> > > > >>>
> > > > >>Who are "we"?
> > > > >Sorry, Fedora. That patch has a link to a bug in it. We applied
> > > the
> > > > >patch for that bug. I'll apply Boris' patch on top and get the
> > > same
> > > > >people to test it.
> > > >
> > > > Josh, have you had a chance to test this?
> > >
> > > I've tested it on bare metal for a while now. No problems noticed at
> > > all. I've not heard back from Krishna who was testing it in the Xen
> > > environment. Krishna?
> >
> >
> > Any updates?
>
> No. I've still not heard from Krishna.
>
> At this point I've tested it on bare metal quite a bit, and Konrad has
> tested it on both bare metal and Xen. That should already cover the
> case Krishna was going to test anyway. I suggest we move forward and
> take the patch.
Peter?
Would you like me or Boris to clean up the two patches with the
appropiate Acks and send them to you?
>
> josh
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
2013-03-22 20:09 ` Konrad Rzeszutek Wilk
@ 2013-03-22 20:25 ` H. Peter Anvin
0 siblings, 0 replies; 7+ messages in thread
From: H. Peter Anvin @ 2013-03-22 20:25 UTC (permalink / raw)
To: Konrad Rzeszutek Wilk, Josh Boyer
Cc: Boris Ostrovsky, mingo, tglx, rostedt, kraman, gregkh, stable, bp,
samu.kallio, xen-devel, linux-kernel
Sure.
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> wrote:
>On Wed, Mar 20, 2013 at 08:08:45PM -0400, Josh Boyer wrote:
>> On Wed, Mar 20, 2013 at 06:53:55AM -0700, Boris Ostrovsky wrote:
>> >
>> > ----- jwboyer@redhat.com wrote:
>> >
>> > > On Wed, Mar 13, 2013 at 09:25:44AM -0400, Boris Ostrovsky wrote:
>> > > > On 03/01/2013 07:14 AM, Josh Boyer wrote:
>> > > > >On Thu, Feb 28, 2013 at 04:52:20PM -0800, H. Peter Anvin
>wrote:
>> > > > >>On 02/28/2013 04:42 PM, Josh Boyer wrote:
>> > > > >>>On Fri, Mar 01, 2013 at 01:36:29AM +0100, Borislav Petkov
>wrote:
>> > > > >>>>On Thu, Feb 28, 2013 at 04:15:45PM -0800, H. Peter Anvin
>wrote:
>> > > > >>>>>>I'll try to get someone to test this tomorrow.
>> > > > >>>>Btw, you'd need to apply that other patch too
>> > > > >>>>
>> > > > >>>>http://marc.info/?l=xen-devel&m=136206183814547&w=2
>> > > > >>>>
>> > > > >>>>so that arch_flush_lazy_mmu_mode() has at least one caller
>on
>> > > x86_64.
>> > > > >>>Yeah, we already have that applied. It stops crashes in xen
>> > > > >>>environments so we pulled it in as a bugfix. Thanks though!
>> > > > >>>
>> > > > >>Who are "we"?
>> > > > >Sorry, Fedora. That patch has a link to a bug in it. We
>applied
>> > > the
>> > > > >patch for that bug. I'll apply Boris' patch on top and get
>the
>> > > same
>> > > > >people to test it.
>> > > >
>> > > > Josh, have you had a chance to test this?
>> > >
>> > > I've tested it on bare metal for a while now. No problems
>noticed at
>> > > all. I've not heard back from Krishna who was testing it in the
>Xen
>> > > environment. Krishna?
>> >
>> >
>> > Any updates?
>>
>> No. I've still not heard from Krishna.
>>
>> At this point I've tested it on bare metal quite a bit, and Konrad
>has
>> tested it on both bare metal and Xen. That should already cover the
>> case Krishna was going to test anyway. I suggest we move forward and
>> take the patch.
>
>Peter?
>
>Would you like me or Boris to clean up the two patches with the
>appropiate Acks and send them to you?
>>
>> josh
--
Sent from my mobile phone. Please excuse brevity and lack of formatting.
^ permalink raw reply [flat|nested] 7+ messages in thread
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2013-03-13 13:25 ` [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal Boris Ostrovsky
2013-03-13 13:44 ` Josh Boyer
2013-03-21 14:07 ` Konrad Rzeszutek Wilk
2013-03-20 13:53 Boris Ostrovsky
2013-03-21 0:08 ` Josh Boyer
2013-03-22 20:09 ` Konrad Rzeszutek Wilk
2013-03-22 20:25 ` H. Peter Anvin
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