Re: [Xen-devel] [PATCH] x86/boot: re-arrange how/when we do disk I/O

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 12/06/17 16:11, Jan Beulich wrote:
> We place the trampoline no lower than at 256k, so we have ample space
> to read the MBRs of BIOS disks into an aligned buffer right below the
> trampoline (not doing so has been found to be a problem on a buggy BIOS
> coming with a Skull Canyon NUC). To facilitate that move MBR reading
> past EDD info retrieval.
>
> Also add a wrap check to the EDD info retrieval loop, to match that in
> the MBR reading one.
>
> Reported-by: Paul Durrant <Paul.Durrant@xxxxxxxxxx>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> Tested-by: Paul Durrant <Paul.Durrant@xxxxxxxxxx>

Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

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