From: "H. Peter Anvin" <hpa@zytor.com>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Borislav Petkov <bp@alien8.de>
Cc: halfdog <me@halfdog.net>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
the arch/x86 maintainers <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Ben Hutchings <ben@decadent.org.uk>
Subject: Re: Sanitize CPU-state when switching tasks (was sanitize CPU-state when switching from virtual-8086 mode to other task)
Date: Fri, 10 Jan 2014 08:11:24 -0800 [thread overview]
Message-ID: <52D01BAC.2060909@zytor.com> (raw)
In-Reply-To: <CA+55aFxkxx-AwF2Tw3_T9uFaA7N+q9qPuv7JP3dEDv9mNP2SuQ@mail.gmail.com>
On 01/10/2014 03:16 AM, Linus Torvalds wrote:
> On Fri, Jan 10, 2014 at 6:06 PM, Borislav Petkov <bp@alien8.de> wrote:
>>
>> Tested-by: Borislav Petkov <bp@suse.de>
>
> Ok, good.
>
> Peter, do you want to take it (feel free to add my sign-off), or
> should I just commit it?
>
> Also, is there a way to have a "likely not true" version of that
> "static_cpu_has()"? There seems to be no way to make the non-K7/K8
> case the fallthrough code.. Not that this is likely that
> performance-critical, but..
>
I'll take it.
We don't have a "likely not true" version of static_cpu_has() at this
point... it would mean we couldn't do short jumps unfortunately (and
they would still take the false path until alternatives run.)
-hpa
next prev parent reply other threads:[~2014-01-10 16:12 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-28 22:02 Sanitize CPU-state when switching from virtual-8086 mode to other task halfdog
2013-12-29 2:37 ` H. Peter Anvin
2013-12-29 20:44 ` halfdog
2013-12-30 1:18 ` H. Peter Anvin
2013-12-30 15:52 ` halfdog
2013-12-31 18:42 ` H. Peter Anvin
2013-12-31 19:21 ` Konrad Rzeszutek Wilk
2013-12-31 22:40 ` H. Peter Anvin
2014-01-03 23:07 ` Sanitize FPU-state when switching tasks (was sanitize CPU-state when switching from virtual-8086 mode to other task) halfdog
2014-01-08 7:45 ` Sanitize CPU-state " halfdog
2014-01-08 17:42 ` H. Peter Anvin
2014-01-08 19:36 ` Borislav Petkov
2014-01-08 21:28 ` halfdog
2014-01-08 22:39 ` H. Peter Anvin
2014-01-09 22:58 ` Borislav Petkov
2014-01-10 0:42 ` Linus Torvalds
2014-01-10 2:13 ` H. Peter Anvin
2014-01-10 10:06 ` Borislav Petkov
2014-01-10 11:16 ` Linus Torvalds
2014-01-10 11:34 ` Borislav Petkov
2014-01-10 16:11 ` H. Peter Anvin [this message]
2014-01-12 3:22 ` [tip:x86/urgent] x86, fpu, amd: Clear exceptions in AMD FXSAVE workaround tip-bot for Linus Torvalds
2014-01-09 22:50 ` Sanitize CPU-state when switching tasks (was sanitize CPU-state when switching from virtual-8086 mode to other task) halfdog
2014-01-09 23:02 ` Borislav Petkov
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