[Qemu-devel] Re: [PATCH] extboot: properly set int 0x13 return value

[Anthony Liguori]

Glauber Costa wrote:
> Callers of int 0x13 usually rely on the carry flag being
> clear/set to indicate the status of the interrupt execution.
>
> However, our current code clear or set the flags register,
> which is totally useless. Whichever value it has, will
> be overwritten by the flags value _before_ the interrupt, due to
> the iret instruction.
>
> This fixes a bug that prevents slackware (and possibly win2k, untested)
> to boot.
>   

Good catch!

> Signed-off-by: Glauber Costa <address@hidden>
>
>   

Acked-by: Anthony Liguori <address@hidden>

Regards,

Anthony Liguori