[SeaBIOS] seabios 0.6.1 regression
Avi Kivity
avi at redhat.com
Mon Nov 15 16:41:07 CET 2010
On 11/15/2010 05:34 PM, Avi Kivity wrote:
> On 11/15/2010 05:12 PM, Avi Kivity wrote:
>>
>> That was premature, the real culprit (if I didn't mess up the bisect)
>> is:
>>
>> commit 6039fc55274deb7202060d08e0f23b9f3dcface4
>> Author: Kevin O'Connor <kevin at koconnor.net>
>> Date: Wed Aug 25 21:43:19 2010 -0400
>>
>> Update qemu_cfg_read to use "rep insb".
>>
>> Use rep insb instead of manual loop - the host may be able to
>> optimize
>> the rep insb instruction.
>>
>> Which doesn't make any sense - will do more testing.
>>
>
> Confirmed with multiple tests.
>
I think it's a miscompile.
out/code16.o:
1a4: 3e ds
1a5: 6c insb (%dx),%es:(%edi)
Note no 66 prefix.
--
error compiling committee.c: too many arguments to function
More information about the SeaBIOS
mailing list