From: Mel Gorman <mgorman@suse.de>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Steven Noonan <steven@uplinklabs.net>,
Cyrill Gorcunov <gorcunov@gmail.com>,
David Vrabel <david.vrabel@citrix.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>, Rik van Riel <riel@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Linux-MM <linux-mm@kvack.org>, Linux-X86 <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Pavel Emelyanov <xemul@parallels.com>
Subject: Re: [PATCH 2/3] x86: Define _PAGE_NUMA with unused physical address bits PMD and PTE levels
Date: Tue, 8 Apr 2014 17:47:44 +0100 [thread overview]
Message-ID: <20140408164744.GM7292@suse.de> (raw)
In-Reply-To: <534420F1.3030301@zytor.com>
On Tue, Apr 08, 2014 at 09:16:49AM -0700, H. Peter Anvin wrote:
> On 04/08/2014 09:02 AM, Konrad Rzeszutek Wilk wrote:
> >>>
> >>> Amazon EC2 does have large memory instance types with NUMA exposed to
> >>> the guest (e.g. c3.8xlarge, i2.8xlarge, etc), so it'd be preferable
> >>> (to me anyway) if we didn't require !XEN.
> >
> > What about the patch that David Vrabel posted:
> >
> > http://osdir.com/ml/general/2014-03/msg41979.html
> >
> > Has anybody taken it for a spin?
> >
>
> Oh lovely, more pvops in low level paths. I'm so thrilled.
>
> Incidentally, I wasn't even Cc:'d on that patch and was only added to
> the thread by Linus, but never saw the early bits of the thread
> including the actual patch.
>
I posted an alternative to that patch that confines the damage to the
NUMA pte helpers.
--
Mel Gorman
SUSE Labs
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WARNING: multiple messages have this Message-ID (diff)
From: Mel Gorman <mgorman@suse.de>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Steven Noonan <steven@uplinklabs.net>,
Cyrill Gorcunov <gorcunov@gmail.com>,
David Vrabel <david.vrabel@citrix.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>, Rik van Riel <riel@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Linux-MM <linux-mm@kvack.org>, Linux-X86 <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Pavel Emelyanov <xemul@parallels.com>
Subject: Re: [PATCH 2/3] x86: Define _PAGE_NUMA with unused physical address bits PMD and PTE levels
Date: Tue, 8 Apr 2014 17:47:44 +0100 [thread overview]
Message-ID: <20140408164744.GM7292@suse.de> (raw)
In-Reply-To: <534420F1.3030301@zytor.com>
On Tue, Apr 08, 2014 at 09:16:49AM -0700, H. Peter Anvin wrote:
> On 04/08/2014 09:02 AM, Konrad Rzeszutek Wilk wrote:
> >>>
> >>> Amazon EC2 does have large memory instance types with NUMA exposed to
> >>> the guest (e.g. c3.8xlarge, i2.8xlarge, etc), so it'd be preferable
> >>> (to me anyway) if we didn't require !XEN.
> >
> > What about the patch that David Vrabel posted:
> >
> > http://osdir.com/ml/general/2014-03/msg41979.html
> >
> > Has anybody taken it for a spin?
> >
>
> Oh lovely, more pvops in low level paths. I'm so thrilled.
>
> Incidentally, I wasn't even Cc:'d on that patch and was only added to
> the thread by Linus, but never saw the early bits of the thread
> including the actual patch.
>
I posted an alternative to that patch that confines the damage to the
NUMA pte helpers.
--
Mel Gorman
SUSE Labs
next prev parent reply other threads:[~2014-04-08 16:47 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-07 15:10 [RFC PATCH 0/3] Use an alternative to _PAGE_PROTNONE for _PAGE_NUMA Mel Gorman
2014-04-07 15:10 ` Mel Gorman
2014-04-07 15:10 ` [PATCH 1/3] x86: Require x86-64 for automatic NUMA balancing Mel Gorman
2014-04-07 15:10 ` Mel Gorman
2014-04-07 15:10 ` [PATCH 2/3] x86: Define _PAGE_NUMA with unused physical address bits PMD and PTE levels Mel Gorman
2014-04-07 15:10 ` Mel Gorman
2014-04-07 15:32 ` David Vrabel
2014-04-07 15:32 ` David Vrabel
2014-04-07 15:49 ` Mel Gorman
2014-04-07 15:49 ` Mel Gorman
2014-04-07 16:19 ` Cyrill Gorcunov
2014-04-07 16:19 ` Cyrill Gorcunov
2014-04-07 18:28 ` Mel Gorman
2014-04-07 18:28 ` Mel Gorman
2014-04-07 19:16 ` Cyrill Gorcunov
2014-04-07 19:16 ` Cyrill Gorcunov
2014-04-07 19:27 ` H. Peter Anvin
2014-04-07 19:27 ` H. Peter Anvin
2014-04-07 19:36 ` Cyrill Gorcunov
2014-04-07 19:36 ` Cyrill Gorcunov
2014-04-07 19:42 ` H. Peter Anvin
2014-04-07 19:42 ` H. Peter Anvin
2014-04-07 21:25 ` Mel Gorman
2014-04-07 21:25 ` Mel Gorman
2014-04-08 4:04 ` Steven Noonan
2014-04-08 4:04 ` Steven Noonan
2014-04-08 15:16 ` H. Peter Anvin
2014-04-08 15:16 ` H. Peter Anvin
2014-04-08 16:02 ` Konrad Rzeszutek Wilk
2014-04-08 16:02 ` Konrad Rzeszutek Wilk
2014-04-08 16:16 ` H. Peter Anvin
2014-04-08 16:16 ` H. Peter Anvin
2014-04-08 16:47 ` Mel Gorman [this message]
2014-04-08 16:47 ` Mel Gorman
2014-04-08 16:50 ` David Vrabel
2014-04-08 16:50 ` David Vrabel
2014-04-08 16:51 ` Mel Gorman
2014-04-08 16:51 ` Mel Gorman
2014-04-09 15:18 ` Konrad Rzeszutek Wilk
2014-04-09 15:18 ` Konrad Rzeszutek Wilk
2014-04-09 15:39 ` Mel Gorman
2014-04-09 15:39 ` Mel Gorman
2014-04-08 20:51 ` Steven Noonan
2014-04-08 20:51 ` Steven Noonan
2014-04-08 20:59 ` H. Peter Anvin
2014-04-08 20:59 ` H. Peter Anvin
2014-04-09 15:04 ` Konrad Rzeszutek Wilk
2014-04-09 15:04 ` Konrad Rzeszutek Wilk
2014-04-09 15:09 ` Peter Zijlstra
2014-04-09 15:09 ` Peter Zijlstra
2014-04-08 9:31 ` David Vrabel
2014-04-08 9:31 ` David Vrabel
2014-04-07 21:19 ` Mel Gorman
2014-04-07 21:19 ` Mel Gorman
2014-04-07 17:37 ` Dave Hansen
2014-04-07 17:37 ` Dave Hansen
2014-04-07 15:10 ` [PATCH 3/3] mm: Allow FOLL_NUMA on FOLL_FORCE Mel Gorman
2014-04-07 15:10 ` Mel Gorman
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