Re: [PATCH 1/2] common: map_vcpu_info() cosmetics

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Wed, Jul 15, 2020 at 12:15:10PM +0200, Jan Beulich wrote:
> Use ENXIO instead of EINVAL to cover the two cases of the address not
> satisfying the requirements. This will make an issue here better stand
> out at the call site.

Not sure whether I would use EFAULT instead of ENXIO, as the
description of it is 'bad address' which seems more inline with the
error that we are trying to report.

> Also add a missing compat-mode related size check: If the sizes
> differed, other code in the function would need changing. Accompany this
> by a change to the initial sizeof() expression, tying it to the type of
> the variable we're actually after (matching e.g. the alignof() added by
> XSA-327).
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Thanks.