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SubjectRe: Regression: boot failure on AMD Elan TS-5500
Sean Young <sean@mess.org> writes:

> On Mon, Jun 30, 2008 at 02:52:10PM -0700, Jeremy Fitzhardinge wrote:
>> It's a bit odd that the boot loader neglected to set up ds properly, but
>> changing the testb line to
>>
>> testb $(1<<6), %cs:BP_loadflags(%esi)
>>
>> should work. (Or perhaps a %ss: override would be better?)
>
> Yup, it does (%cs: prefix).

Guys I have a fuzzy memory of reads and definitely writes through %cs not working,
on some processor models. i386?

If that hadn't been the case I would have used that form more to remove the
dependencies before we reached lgdt in haed.S when I was in there years ago.

Eric


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