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From: "Luis R. Rodriguez" <mcgrof@suse.com>
To: Toshi Kani <toshi.kani@hpe.com>,
	Fengguang Wu <fengguang.wu@intel.com>,
	lkp@ml01.01.org
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	Ingo Molnar <mingo@kernel.org>, Juergen Gross <jgross@suse.com>,
	Olaf Hering <olaf@aepfle.de>, X86 ML <x86@kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Paul Gortmaker <paul.gortmaker@windriver.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	xen-devel <xen-devel@lists.xenproject.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Borislav Petkov <bp@suse.de>,
	elliott@hpe.com, Lars Kurth <lars.kurth@xen.org>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Olaf Hering <ohering@suse.de>,
	Robert Schweikert <rjschwei@suse.com>,
	"Hao, Xudong" <xudong.hao@intel.com>,
	Michal Marek <mmarek@suse.cz>, Mike Latimer <mlatimer@suse.com>,
	Charles Arnold <carnold@suse.com>
Subject: Re: [Xen-devel] [PATCH v3 0/7] Enhance PAT init to fix Xorg crashes
Date: Wed, 30 Mar 2016 11:02:13 -0700	[thread overview]
Message-ID: <CAB=NE6VZD3gJicAzm3068APmVeKmFdF-gavNjEoVCz51hV262g@mail.gmail.com> (raw)
In-Reply-To: <1459266567.6393.669.camel@hpe.com>

On Tue, Mar 29, 2016 at 8:49 AM, Toshi Kani <toshi.kani@hpe.com> wrote:
> On Tue, 2016-03-29 at 10:46 -0400, Boris Ostrovsky wrote:
>> On 03/29/2016 10:19 AM, Toshi Kani wrote:
>> > On Tue, 2016-03-29 at 12:34 +0200, Ingo Molnar wrote:
>> >
>> > > > I'd appreciate if someone can test this patch-set on Xen to verify
>> > > > that there is no change in "x86/PAT: Configuration [0-7] .."
>> > > > message in dmesg.
>> > > So I don't have a Xen setup, but hopefully such testing will happen
>> > > once these changes show up in linux-next, tomorrow or so.
>> > I will address if any issue is found in testing.
>>
>> I ran a subset of out nightly test. Nobody died.
>>
>> So this all looks good. (It actually may have also fixed another bug
>> that was reported recently by Olaf, copied here)
>
> Cool! Thanks Boris!

Hoping Boris or someone on the Xen front would test this prior to
merging helps but it also slows us down, a while ago we discussed the
possibility of getting Linux Xen guests automatically tested as part
of 0-day, this way then when a developer (in this case Toshi) pushes
to his own tree, he'd be able to just sit and wait for the results,
without having to hope Boris or someone goes out and tests.

Its a major undertaking to get Linux Xen guests boot strapped into
0-day, however such prospects were raised a while ago and it seems we
may be able to get there. Just wanted to send a reminder about this
possibility, and highlight this patch set as an ideal candidate where
a proactive test could have helped as well. I proactively caught the
original Xen issue, but git logs shows we are not doing so great in
this area, so any help on the Xen side as well to help with 0-day
integration would be appreciated.

I'll follow up on another thread on that.

 Luis

WARNING: multiple messages have this Message-ID (diff)
From: Luis R. Rodriguez <mcgrof@suse.com>
To: lkp@lists.01.org
Subject: Re: [Xen-devel] [PATCH v3 0/7] Enhance PAT init to fix Xorg crashes
Date: Wed, 30 Mar 2016 11:02:13 -0700	[thread overview]
Message-ID: <CAB=NE6VZD3gJicAzm3068APmVeKmFdF-gavNjEoVCz51hV262g@mail.gmail.com> (raw)
In-Reply-To: <1459266567.6393.669.camel@hpe.com>

[-- Attachment #1: Type: text/plain, Size: 1818 bytes --]

On Tue, Mar 29, 2016 at 8:49 AM, Toshi Kani <toshi.kani@hpe.com> wrote:
> On Tue, 2016-03-29 at 10:46 -0400, Boris Ostrovsky wrote:
>> On 03/29/2016 10:19 AM, Toshi Kani wrote:
>> > On Tue, 2016-03-29 at 12:34 +0200, Ingo Molnar wrote:
>> >
>> > > > I'd appreciate if someone can test this patch-set on Xen to verify
>> > > > that there is no change in "x86/PAT: Configuration [0-7] .."
>> > > > message in dmesg.
>> > > So I don't have a Xen setup, but hopefully such testing will happen
>> > > once these changes show up in linux-next, tomorrow or so.
>> > I will address if any issue is found in testing.
>>
>> I ran a subset of out nightly test. Nobody died.
>>
>> So this all looks good. (It actually may have also fixed another bug
>> that was reported recently by Olaf, copied here)
>
> Cool! Thanks Boris!

Hoping Boris or someone on the Xen front would test this prior to
merging helps but it also slows us down, a while ago we discussed the
possibility of getting Linux Xen guests automatically tested as part
of 0-day, this way then when a developer (in this case Toshi) pushes
to his own tree, he'd be able to just sit and wait for the results,
without having to hope Boris or someone goes out and tests.

Its a major undertaking to get Linux Xen guests boot strapped into
0-day, however such prospects were raised a while ago and it seems we
may be able to get there. Just wanted to send a reminder about this
possibility, and highlight this patch set as an ideal candidate where
a proactive test could have helped as well. I proactively caught the
original Xen issue, but git logs shows we are not doing so great in
this area, so any help on the Xen side as well to help with 0-day
integration would be appreciated.

I'll follow up on another thread on that.

 Luis

  reply	other threads:[~2016-03-30 18:02 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-23 21:41 [PATCH v3 0/7] Enhance PAT init to fix Xorg crashes Toshi Kani
2016-03-23 21:41 ` [PATCH v3 1/7] x86/mm/pat: Add support of non-default PAT MSR setting Toshi Kani
2016-03-29 10:37   ` [tip:x86/mm] " tip-bot for Toshi Kani
2016-03-23 21:41 ` [PATCH v3 1/7] " Toshi Kani
2016-03-23 21:41 ` [PATCH v3 2/7] x86/mm/pat: Add pat_disable() interface Toshi Kani
2016-03-23 21:41   ` Toshi Kani
2016-03-29 10:38   ` [tip:x86/mm] " tip-bot for Toshi Kani
2016-03-23 21:41 ` [PATCH v3 3/7] x86/mm/pat: Replace cpu_has_pat with boot_cpu_has Toshi Kani
2016-03-29 10:38   ` [tip:x86/mm] x86/mm/pat: Replace cpu_has_pat with boot_cpu_has() tip-bot for Toshi Kani
2016-03-23 21:41 ` [PATCH v3 3/7] x86/mm/pat: Replace cpu_has_pat with boot_cpu_has Toshi Kani
2016-03-23 21:42 ` [PATCH v3 4/6] x86/mtrr: Fix Xorg crashes in Qemu sessions Toshi Kani
2016-03-23 21:42   ` Toshi Kani
2016-03-29 10:39   ` [tip:x86/mm] " tip-bot for Toshi Kani
2016-03-23 21:42 ` [PATCH v3 5/7] x86/mtrr: Fix PAT init handling when MTRR is disabled Toshi Kani
2016-03-29 10:39   ` [tip:x86/mm] " tip-bot for Toshi Kani
2016-03-23 21:42 ` [PATCH v3 5/7] " Toshi Kani
2016-03-23 21:42 ` [PATCH v3 6/7] x86/xen,pat: Remove PAT table init code from Xen Toshi Kani
2016-03-23 21:42   ` [PATCH v3 6/7] x86/xen, pat: " Toshi Kani
2016-03-29 10:39   ` [tip:x86/mm] " tip-bot for Toshi Kani
2016-03-23 21:42 ` [PATCH v3 7/7] x86/pat: Document PAT initialization Toshi Kani
2016-03-23 21:42 ` Toshi Kani
2016-03-29 10:40   ` [tip:x86/mm] x86/pat: Document the PAT initialization sequence tip-bot for Toshi Kani
2016-03-29 10:34 ` [PATCH v3 0/7] Enhance PAT init to fix Xorg crashes Ingo Molnar
2016-03-29 14:19   ` Toshi Kani
2016-03-29 14:19   ` Toshi Kani
2016-03-29 14:46     ` Boris Ostrovsky
2016-03-29 14:46     ` [Xen-devel] " Boris Ostrovsky
2016-03-29 15:49       ` Toshi Kani
2016-03-29 15:49       ` [Xen-devel] " Toshi Kani
2016-03-30 18:02         ` Luis R. Rodriguez [this message]
2016-03-30 18:02           ` Luis R. Rodriguez
2016-03-30 18:58           ` Konrad Rzeszutek Wilk
2016-03-30 18:58             ` [Xen-devel] " Konrad Rzeszutek Wilk
2016-03-30 20:10             ` [LKP] " Luis R. Rodriguez
2016-03-30 20:10             ` [LKP] [Xen-devel] " Luis R. Rodriguez
2016-03-30 20:10               ` Luis R. Rodriguez
2016-03-30 20:29               ` [LKP] " Konrad Rzeszutek Wilk
2016-03-30 20:29                 ` [Xen-devel] " Konrad Rzeszutek Wilk
2016-03-30 20:47                 ` [LKP] " Luis R. Rodriguez
2016-03-30 20:47                 ` [LKP] [Xen-devel] " Luis R. Rodriguez
2016-03-30 20:47                   ` Luis R. Rodriguez
2016-03-30 18:02         ` Luis R. Rodriguez
2016-03-29 10:34 ` Ingo Molnar

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