Re: [PATCH v9 05/15] guest_memfd: Use folio_has_hwpoisoned_page()

["David Hildenbrand (Arm)" <david@kernel.org>]

On 8/5/26 23:05, Matthew Wilcox (Oracle) wrote:
> folio_test_hwpoison() only works on hugetlb folios today and will give
> the wrong answer for other large folios.  folio_has_hwpoisoned_page()
> works on both.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> Acked-by: Sean Christopherson <seanjc@google.com>
> Reviewed-by: Ackerley Tng <ackerleytng@google.com>
> Reviewed-by: Gregory Price <gourry@gourry.net>
> Reviewed-by: Jane Chu <jane.chu@oracle.com>
> ---
>  virt/kvm/guest_memfd.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c
> index db57c5766ab6..94eedcc7f1a9 100644
> --- a/virt/kvm/guest_memfd.c
> +++ b/virt/kvm/guest_memfd.c
> @@ -774,7 +774,7 @@ static struct folio *__kvm_gmem_get_pfn(struct file *file,
>  	if (IS_ERR(folio))
>  		return folio;
>  
> -	if (folio_test_hwpoison(folio)) {
> +	if (folio_has_hwpoisoned_page(folio)) {
>  		folio_unlock(folio);
>  		folio_put(folio);
>  		return ERR_PTR(-EHWPOISON);


guest_memfd only uses small folios, so it doesn't really matter.

Acked-by: David Hildenbrand (Arm) <david@kernel.org>

-- 
Cheers,

David