Re: [PATCH] x86/p2m: Fix paging_gva_to_gfn() for nested virt

[Tamas K Lengyel <tamas@xxxxxxxxxxxxx>]

On Thu, Dec 31, 2020 at 12:11 PM Andrew Cooper
<andrew.cooper3@xxxxxxxxxx> wrote:
>
> nestedhap_walk_L1_p2m() takes guest physical addresses, not frame numbers.
> This means the l2 input is off-by-PAGE_SHIFT, as is the l1 value eventually
> returned to the caller.
>
> Delete the misleading comment as well.
>
> Fixes: bab2bd8e222de ("xen/nested_p2m: Don't walk EPT tables with a regular 
> PT walker")
> Reported-by: Tamas K Lengyel <tamas@xxxxxxxxxxxxx>
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> ---
> CC: Jan Beulich <JBeulich@xxxxxxxx>
> CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
> CC: Wei Liu <wl@xxxxxxx>
> CC: Tamas K Lengyel <tamas@xxxxxxxxxxxxx>

Thanks, issue is resolved with this patch applied.

Tested-by: Tamas K Lengyel <tamas@xxxxxxxxxxxxx>