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From: Jeremy Fitzhardinge <jeremy@goop.org>
To: "H. Peter Anvin" <hpa@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	the arch/x86 maintainers <x86@kernel.org>
Subject: Re: [PATCH 1/3] x86_64: further cleanup of 32-bit compat syscall mechanisms
Date: Mon, 14 Jul 2008 14:59:01 -0700	[thread overview]
Message-ID: <487BCC25.9030204@goop.org> (raw)
In-Reply-To: <487A963E.6040307@kernel.org>

H. Peter Anvin wrote:
> Jeremy Fitzhardinge wrote:
>> AMD only supports "syscall" from 32-bit compat usermode.
>> Intel and Centaur(?) only support "sysenter" from 32-bit compat 
>> usermode.
>>
>> Set the X86 feature bits accordingly, and set up the vdso in
>> accordance with those bits.  On the offchance we run on in a 64-bit
>> environment which supports neither syscall nor sysenter from 32-bit
>> mode, then fall back to the int $0x80 vdso.
>>
>> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
>
> Acked-by: H. Peter Anvin <hpa@zytor.com> 

Have these been applied to anything yet?

    J

  reply	other threads:[~2008-07-14 21:59 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-12  9:22 [PATCH 1/3] x86_64: further cleanup of 32-bit compat syscall mechanisms Jeremy Fitzhardinge
2008-07-13 23:56 ` H. Peter Anvin
2008-07-14 21:59   ` Jeremy Fitzhardinge [this message]
2008-07-14 22:19     ` H. Peter Anvin

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