Re: [Xen-devel] [PATCH 1/3] AMD/IOMMU: don't needlessly trigger errors/crashes when unmapping a page

[Jürgen Groß <jgross@xxxxxxxx>]

On 06.11.19 16:18, Jan Beulich wrote:
> Unmapping a page which has never been mapped should be a no-op (note how
> it already is in case there was no root page table allocated). There's
> in particular no need to grow the number of page table levels in use,
> and there's also no need to allocate intermediate page tables except
> when needing to split a large page.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Release-acked-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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