From: "H. Peter Anvin" <hpa@kernel.org>
To: Greg KH <greg@kroah.com>
Cc: Marc Aurele La France <root@ualberta.ca>,
"H. Peter Anvin" <hpa@linux.intel.com>,
x86@kernel.org, stable@kernel.org, Research.Support@ualberta.ca,
linux-kernel@vger.kernel.org
Subject: Re: [stable] [PATCH] x86, setup (2.6.30-stable) fix 80x34 and 80x60 console modes
Date: Mon, 29 Jun 2009 23:33:42 -0700 [thread overview]
Message-ID: <4A49B1C6.9040900@kernel.org> (raw)
In-Reply-To: <20090630034822.GC12373@kroah.com>
Greg KH wrote:
> On Mon, Jun 29, 2009 at 06:27:40PM -0700, H. Peter Anvin wrote:
>> 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.
>
> So it is a ".30 only" type patch? Any older kernel versions affected?
>
Yes, all the way back to .23 or something like that.
-hpa
next prev parent reply other threads:[~2009-06-30 6:34 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
2009-06-30 3:48 ` [stable] " Greg KH
2009-06-30 6:33 ` H. Peter Anvin [this message]
2009-06-30 14:01 ` [rs] " Marc Aurele La France
2009-06-30 15:43 ` Greg KH
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