Re: [PATCH v2 2/6] KVM: s390: Fix _gaccess_shadow_fault()
| Newsgroups | org.kernel.vger.kvm,org.kernel.vger.linux-s390 |
|---|---|
| Message-ID | <[email protected]> |
> In some circumstances, it is possible that the page of nested guest
> memory that is being shadowed is not present at all in the parent guest
> gmap. dat_entry_walk() will not find any leaf entry and return with
> -ENOENT, which will erroneously be propagated all the way to userspace.
>
> Fix by manually calling gmap_link() on the memory of the nested guest
> that is being shadowed if the mapping was not already present.
>
> Fixes: e38c884df921 ("KVM: s390: Switch to new gmap")
> Signed-off-by: Claudio Imbrenda <[email protected]>
Sashiko has reviewed this patch and found no issues. It looks great!
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Sashiko AI review · https://sashiko.dev/#/patchset/[email protected]?part=2