Re: [PATCH] x86/xen: fix init of balloon stats for PV guests with memory != maxmem

[Juergen Gross]

On 30.07.26 16:35, Roger Pau Monne wrote:
> The handling of extra memory regions done in balloon_add_regions() is not
> correct for PV guests, since the initial target is set to reflect the real
> memory the system has, not what's described on the memory map, which can be
> higher if memory != maxmem.
>
> Introduce separate logic for PV vs HVM in balloon_add_regions() and handle
> the extra region correctly by adding them to the total amount of pages,
> instead of subtracting from the current and target pages amounts.
>
> Fixes: 87af633689ce ("x86/xen: fix balloon target initialization for PVH dom0")
> Signed-off-by: Roger Pau Monné <roger@xxxxxxxxxxxxxx>

Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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