From: "H. Peter Anvin" <hpa@kernel.org>
To: Marc Aurele La France <root@ualberta.ca>
Cc: stable@kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org,
"H. Peter Anvin" <hpa@linux.intel.com>,
Research.Support@ualberta.ca
Subject: Re: [PATCH] x86, setup (2.6.30-stable) fix 80x34 and 80x60 console modes
Date: Mon, 29 Jun 2009 18:27:40 -0700 [thread overview]
Message-ID: <4A496A0C.809@kernel.org> (raw)
In-Reply-To: <alpine.BSO.1.10.0906291746410.14658@fanir.ucs.ualberta.ca>
Marc Aurele La France wrote:
> As coded, most INT10 calls in video-vga.c allow the compiler to assume EAX
> remains unchanged across them, which is not always the case. This
> triggers an optimisation issue that causes vga_set_vertical_end() to be
> called with an incorrect number of scanlines. Fix this by beefing up the
> asm constraints on these calls.
>
> Reported-by: Marc Aurele La France <tsi@xfree86.org>
> Signed-off-by: Marc Aurele La France <tsi@xfree86.org>
> Acked-by: H. Peter Anvin <hpa@zytor.com>
Note: this is not in upstream since upstream is not affected due to the
new "BIOS glovebox" subsystem.
-hpa
next prev parent reply other threads:[~2009-06-30 1:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-30 0:07 [PATCH] x86, setup (2.6.30-stable) fix 80x34 and 80x60 console modes Marc Aurele La France
2009-06-30 1:27 ` H. Peter Anvin [this message]
2009-06-30 3:48 ` [stable] " Greg KH
2009-06-30 6:33 ` H. Peter Anvin
2009-06-30 14:01 ` [rs] " Marc Aurele La France
2009-06-30 15:43 ` Greg KH
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