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SubjectRe: [stable] [PATCH] x86, setup (2.6.30-stable) fix 80x34 and 80x60 console modes
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 <>
>>> Signed-off-by: Marc Aurele La France <>
>>> Acked-by: H. Peter Anvin <>
>> 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.


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