linux-kernel - Re: [PATCH] x86-64: remove int 0xcc from entry

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Message-ID: <CAObL_7G8qM_qq0qp-UHuuwyCretqzcVhVw-gc3O9TCQJN8zHkA@mail.gmail.com>
Date:	Mon, 15 Aug 2011 18:32:09 -0400
From:	Andrew Lutomirski <luto@....edu>
To:	Cesar Eduardo Barros <cesarb@...arb.net>
Cc:	linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
	Randy Dunlap <rdunlap@...otime.net>, x86@...nel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH] x86-64: remove int 0xcc from entry_64.S documentation

On Mon, Aug 15, 2011 at 6:26 PM, Cesar Eduardo Barros <cesarb@...arb.net> wrote:
> Commit 3ae36655b97a03fa1decf72f04078ef945647c1a (x86-64: Rework vsyscall
> emulation and add vsyscall= parameter) removed the special use of the
> 0xcc IDT vector.
>
> Remove it from Documentation/x86/entry_64.txt also.
>
> Cc: Andy Lutomirski <luto@....EDU>
> Cc: Ingo Molnar <mingo@...e.hu>
> Signed-off-by: Cesar Eduardo Barros <cesarb@...arb.net>
> ---
>  Documentation/x86/entry_64.txt |    3 ---
>  1 files changed, 0 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/x86/entry_64.txt b/Documentation/x86/entry_64.txt
> index 7869f14..bc7226e 100644
> --- a/Documentation/x86/entry_64.txt
> +++ b/Documentation/x86/entry_64.txt
> @@ -27,9 +27,6 @@ Some of these entries are:
>    magically-generated functions that make their way to do_IRQ with
>    the interrupt number as a parameter.
>
> - - emulate_vsyscall: int 0xcc, a special non-ABI entry used by
> -   vsyscall emulation.
> -
>  - APIC interrupts: Various special-purpose interrupts for things
>    like TLB shootdown.
>

Acked-by: Andy Lutomirski <luto@....edu>

--Andy
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