Re: [PATCH] Use correct byte-sized register constraint in __xchg_op()

From: Josh Boyer
Date: Thu Apr 05 2012 - 16:27:24 EST


On Tue, Apr 3, 2012 at 8:37 PM, Josh Boyer <jwboyer@xxxxxxxxx> wrote:
> On Mon, Apr 2, 2012 at 7:15 PM, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
>> x86-64 can access the low half of any register, but i386 can only do
>> it with a subset of registers.  'r' causes compilation failures on i386,
>> but 'q' expresses the constraint properly.
>>
>> Signed-off-by: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
>> Reported-by: Leigh Scott <leigh123linux@xxxxxxxxxxxxxx>
>> Tested-by: Thomas Reitmayr <treitmayr@xxxxxxxxxx>
>
> This should be CC'd to stable, given the bug shows up in 3.3, right?

Er.. this patch seems to have been lost in limbo. Is anyone following
up on it?

josh
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