From: Borislav Petkov <bp@alien8.de>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>, Ingo Molnar <mingo@kernel.org>,
x86@kernel.org, linux-kernel@vger.kernel.org,
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>
Subject: Re: several messages
Date: Fri, 29 Jan 2016 14:21:14 +0100 [thread overview]
Message-ID: <20160129132114.GF10187@pd.tnic> (raw)
In-Reply-To: <alpine.DEB.2.11.1601271108230.3886@nanos>
On Wed, Jan 27, 2016 at 11:09:04AM +0100, Thomas Gleixner wrote:
> On Mon, 25 Jan 2016, Andy Lutomirski wrote:
> > 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.)
>
> Haswell and Broadwell have it. No idea about ivy bridge.
I have an IVB model 58. It doesn't have it:
CPUID_0x00000007: EAX=0x00000000, EBX=0x00000281, ECX=0x00000000, EDX=0x00000000
INVPCID should be EBX[10].
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
prev parent reply other threads:[~2016-01-29 13:21 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-25 18:37 [PATCH v2 0/3] x86/mm: INVPCID support Andy Lutomirski
2016-01-25 18:37 ` [PATCH v2 1/3] x86/mm: Add INVPCID helpers Andy Lutomirski
2016-01-29 11:19 ` Borislav Petkov
2016-01-25 18:37 ` [PATCH v2 2/3] x86/mm: Add a noinvpcid option to turn off INVPCID Andy Lutomirski
2016-01-29 11:21 ` Borislav Petkov
2016-01-25 18:37 ` [PATCH v2 3/3] x86/mm: If INVPCID is available, use it to flush global mappings Andy Lutomirski
2016-01-29 14:26 ` Borislav Petkov
2016-01-29 17:35 ` Andy Lutomirski
2016-01-29 18:27 ` Borislav Petkov
2016-01-25 18:57 ` [PATCH v2 0/3] x86/mm: INVPCID support Ingo Molnar
2016-01-27 10:09 ` several messages Thomas Gleixner
2016-01-29 13:21 ` Borislav Petkov [this message]
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