From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A9DAC356757 for ; Thu, 13 Aug 2026 07:20:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786605660; cv=none; b=tvtGjOOJ2f1hbbZFwGKgBtoV5mSVf59xUzna/2/IuqIyQ2qZA20rwbM/3ArnAoO++S8fB2uyzUolg7hMP6s0zXlSaVYtRpl5f3hps87R+Lll4YiNaRlSfLQMqpYrpUIAHJkxgOZYgah/XL74VLE4w5YfM9T9/8Pc/xRnFj10iAk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786605660; c=relaxed/simple; bh=6VRW7SdQWGsO0aZDFJh4qrZFd4oacyC6ppKkShoC0b8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=lBjUfHuL7f7yIkuHO99H1M9DQfmy/cCWjIhb5Z8LNgV6CNzuDNqQd7JQ3W3GlkBxE4/b39MBgebPKAIIirfiW7tPaXs/JBDqqRFCWm2YUmEaFR4R018SrZPVzu5WSvHPEOOWjamEist0Ub9GqEFhd2QIkPrCerdqA5Q4ZNc+u2Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=l0J1WW1N; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="l0J1WW1N" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF6DA1F000E9; Thu, 13 Aug 2026 07:20:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786605659; bh=1zx2Qgzcucr1lr0qkaSYA1QLDyvjN3OglK+Nni4fAl8=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=l0J1WW1NdC8WUCI+4hObk9BmgQxnhkoM5huUcC2I9a8fgeLpyDG+w8x6XSXMb/8G5 sIm5hRmA4p+smRwNrCiLU09vUZyeobDqwyLdbp8AuGN1I/9KSHfoq5n5FnYcdcXcVl vcziya8SDDOlEJC7tZlrqDsd+YvKSvEq0h+kHaFGpeL9c9GnheAcfBomKLqKJdbjIi +VBPi2jblFrzPStVsKWuqyhE0hV2ycsBtYK38gH5f4+nuRA+ES7S0XOu5wQyjT8Pzt lWHtufmEY41W/Da7nfjvrsLcVQOJSiE5GhPUijyo9kUYEXA9TxcULKh7QsON1XrPlY nrUj/W3+nFzJg== Message-ID: <32873b50-c900-4fe5-9dc1-cb086bba77e7@kernel.org> Date: Thu, 13 Aug 2026 09:20:54 +0200 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v9 05/15] guest_memfd: Use folio_has_hwpoisoned_page() To: "Matthew Wilcox (Oracle)" , Andrew Morton , Jane Chu , linux-mm@kvack.org Cc: Muchun Song , Oscar Salvador , Miaohe Lin , Naoya Horiguchi , Jan Kara , linux-fsdevel@vger.kernel.org, Christian Brauner , Jiaqi Yan , Sean Christopherson , Ackerley Tng , Gregory Price References: <20260805210557.1118966-1-willy@infradead.org> <20260805210557.1118966-6-willy@infradead.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit 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) > Acked-by: Sean Christopherson > Reviewed-by: Ackerley Tng > Reviewed-by: Gregory Price > Reviewed-by: Jane Chu > --- > 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) -- Cheers, David