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SubjectRe: [PATCH v2] xen/privcmd: allow fetching resource sizes
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On 12.01.21 12:53, Roger Pau Monne wrote:
> Allow issuing an IOCTL_PRIVCMD_MMAP_RESOURCE ioctl with num = 0 and
> addr = 0 in order to fetch the size of a specific resource.
>
> Add a shortcut to the default map resource path, since fetching the
> size requires no address to be passed in, and thus no VMA to setup.
>
> This is missing from the initial implementation, and causes issues
> when mapping resources that don't have fixed or known sizes.
>
> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
> Cc: stable@vger.kernel.org # >= 4.18

Reviewed-by: Juergen Gross <jgross@suse.com>


Juergen
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