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From: Andy Lutomirski <luto@kernel.org>
To: x86@kernel.org, linux-kernel@vger.kernel.org
Cc: Borislav Petkov <bp@alien8.de>, Brian Gerst <brgerst@gmail.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Oleg Nesterov <oleg@redhat.com>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Andy Lutomirski <luto@kernel.org>
Subject: [PATCH v3 0/3] x86/mm: INVPCID support
Date: Fri, 29 Jan 2016 11:42:56 -0800	[thread overview]
Message-ID: <cover.1454096309.git.luto@kernel.org> (raw)

Boris, I think you already have these prerequisites queued up:

http://lkml.kernel.org/g/1452516679-32040-2-git-send-email-aryabinin@virtuozzo.com
http://lkml.kernel.org/g/1452516679-32040-3-git-send-email-aryabinin@virtuozzo.com

This is a straightforward speedup on Ivy Bridge and newer, IIRC.
(I tested on Skylake.  INVPCID is not available on Sandy Bridge.
I don't have Ivy Bridge, Haswell or Broadwell to test on, so I
could be wrong as to when the feature was introduced.)

I think we should consider these patches separately from the rest
of the PCID stuff -- they barely interact, and this part is much
simpler and is useful on its own.

Changes from v2:
 - Add macros for the INVPCID mode numbers.
 - Add a changelog message for the chicken bit.

v1 was exactly identical to patches 2-4 of the PCID RFC series.
Andy Lutomirski (3):
  x86/mm: Add INVPCID helpers
  x86/mm: Add a noinvpcid option to turn off INVPCID
  x86/mm: If INVPCID is available, use it to flush global mappings

 Documentation/kernel-parameters.txt |  2 ++
 arch/x86/include/asm/tlbflush.h     | 57 +++++++++++++++++++++++++++++++++++++
 arch/x86/kernel/cpu/common.c        | 16 +++++++++++
 3 files changed, 75 insertions(+)

-- 
2.5.0

WARNING: multiple messages have this Message-ID (diff)
From: Andy Lutomirski <luto@kernel.org>
To: x86@kernel.org, linux-kernel@vger.kernel.org
Cc: Borislav Petkov <bp@alien8.de>, Brian Gerst <brgerst@gmail.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Oleg Nesterov <oleg@redhat.com>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>,
	Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Andy Lutomirski <luto@kernel.org>
Subject: [PATCH v3 0/3] x86/mm: INVPCID support
Date: Fri, 29 Jan 2016 11:42:56 -0800	[thread overview]
Message-ID: <cover.1454096309.git.luto@kernel.org> (raw)

Boris, I think you already have these prerequisites queued up:

http://lkml.kernel.org/g/1452516679-32040-2-git-send-email-aryabinin@virtuozzo.com
http://lkml.kernel.org/g/1452516679-32040-3-git-send-email-aryabinin@virtuozzo.com

This is a straightforward speedup on Ivy Bridge and newer, IIRC.
(I tested on Skylake.  INVPCID is not available on Sandy Bridge.
I don't have Ivy Bridge, Haswell or Broadwell to test on, so I
could be wrong as to when the feature was introduced.)

I think we should consider these patches separately from the rest
of the PCID stuff -- they barely interact, and this part is much
simpler and is useful on its own.

Changes from v2:
 - Add macros for the INVPCID mode numbers.
 - Add a changelog message for the chicken bit.

v1 was exactly identical to patches 2-4 of the PCID RFC series.
Andy Lutomirski (3):
  x86/mm: Add INVPCID helpers
  x86/mm: Add a noinvpcid option to turn off INVPCID
  x86/mm: If INVPCID is available, use it to flush global mappings

 Documentation/kernel-parameters.txt |  2 ++
 arch/x86/include/asm/tlbflush.h     | 57 +++++++++++++++++++++++++++++++++++++
 arch/x86/kernel/cpu/common.c        | 16 +++++++++++
 3 files changed, 75 insertions(+)

-- 
2.5.0

--
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             reply	other threads:[~2016-01-29 19:43 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-29 19:42 Andy Lutomirski [this message]
2016-01-29 19:42 ` [PATCH v3 0/3] x86/mm: INVPCID support Andy Lutomirski
2016-01-29 19:42 ` [PATCH v3 1/3] x86/mm: Add INVPCID helpers Andy Lutomirski
2016-01-29 19:42   ` Andy Lutomirski
2016-02-09 16:07   ` [tip:x86/mm] " tip-bot for Andy Lutomirski
2016-02-10 12:08     ` Borislav Petkov
2016-02-10 13:48       ` Michael Matz
2016-02-10 14:51         ` [PATCH -v1.1] x86/mm: Fix INVPCID asm constraint Borislav Petkov
2016-02-11  2:48           ` Andy Lutomirski
2016-01-29 19:42 ` [PATCH v3 2/3] x86/mm: Add a noinvpcid option to turn off INVPCID Andy Lutomirski
2016-01-29 19:42   ` Andy Lutomirski
2016-02-09 16:07   ` [tip:x86/mm] x86/mm: Add a 'noinvpcid' boot " tip-bot for Andy Lutomirski
2016-01-29 19:42 ` [PATCH v3 3/3] x86/mm: If INVPCID is available, use it to flush global mappings Andy Lutomirski
2016-01-29 19:42   ` Andy Lutomirski
2016-02-09 16:08   ` [tip:x86/mm] " tip-bot for Andy Lutomirski
2016-02-01 10:51 ` [PATCH v3 0/3] x86/mm: INVPCID support Borislav Petkov

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