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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next reply other threads:[~2016-01-29 19:43 UTC|newest]
Thread overview: 5+ 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 1/3] x86/mm: Add INVPCID helpers 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 ` [PATCH v3 3/3] x86/mm: If INVPCID is available, use it to flush global mappings Andy Lutomirski
2016-02-01 10:51 ` [PATCH v3 0/3] x86/mm: INVPCID support Borislav Petkov
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