Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793990586; b=quJSwvwUx2m9Xg4s1QoLraUHQl8o7oK1dC3YT+bNNTiBEsdPthUfq/n5Mtem8to7TYQz e8PMq8ZiqualNOA4mwdJnLVf+ebRp80xapu8jyhIVlOQt72M1uyQ/xpUvctIed9ftRaSf j49XLk+est0u0XNf5FfUzxX2iuxAV75HgIkZto6sRysmyyUT9Z1GbLdapTYnRuFGy4nYi DgfK9Z+DplZMdOUINGoXNxUL9cSK6kPswCdF0zDJB7Ru0Sa4qcn8Jweq22aXfi1vV9NmT K08X43Kq/fudYaI5CxhrkQtsf0HbDQ453wRKoKaQnjjDI8viWHuKeqyZusNHbkck3/w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793990586; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=qmN0atWAN3An7+bcolqsibinTAm8GPOht2ykX3zJyTc=; b=U7mUfyL8y+ulatSzfRfFYvoH+XTGdxI6plRveExvTggxXSfQLKlBSUPoXVpNf/g6BTMM MyR+3rHWAjj4KcjlOyFCTieIt/Ux+HZO1lAl32C8MqkfhxVjSngq0JkYcKSLek5imXPTU 4sYu3ix8ZFYM33N4rKPSXnrXBPicA//v3xi6zxqctZXk6FhEEeNEsWY6JtCWoNJx6kPaF fRRGwnV2Xiwy0er86jlFq7MBMBb9rd18Ml0sExLAoK0spzcRPZBtnh/bx+TWorv1NA2/9 9Kte9gRgZD3gptWusEPZCaklfTq8Q9vhvf2SiaZIHPoeUkoOgY8xaziIehpGEocm+RQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ZP56SFba; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DAD8E606A326 for ; Fri, 6 Nov 2026 18:43:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ZP56SFba Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2FAB21F0089F; Fri, 6 Nov 2026 18:43:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793990585; bh=qmN0atWAN3An7+bcolqsibinTAm8GPOht2ykX3zJyTc=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=ZP56SFbaWitPPFrBDsAx9Gxax+dAAR5t4onN4MxZVvrZYebKFbTYy29oH9KYEyUfc fcVbVdkpfi0VWSP+dB1fPd+2l/bY6zQmgVlsdUyCJCD1TEtGtRw9SyxkPas8RAKn9c q/qFQcBz8IoSmW20eluym4vY9bJY1pZXOFlUcvWAFzZwz2YE91tYUW+vbhrABF6Arh /jjg3H7O3Ii08FrezZQXxtEZ814JADOzFPzK1zibopJrUk0ORI1p7+fisFnU1IT7C1 Ws1qlNTZdDRsBPA5VocE5mqj8l9u/2lU/YEy0kwZwG4A7wGQ2pMS7mpuy10jfB57rs uI3+sqWFjxK3g== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v9 06/32] s390: mm: add PMD swap-exclusive helpers Reply-To: sashiko-reviews@lists.linux.dev To: "Usama Arif" Cc: linux-s390@vger.kernel.org, "Heiko Carstens" , "Vasily Gorbik" , "Alexander Gordeev" , "Christian Borntraeger" In-Reply-To: <20261105183940.2236717-7-usama.arif@linux.dev> References: <20261105183940.2236717-1-usama.arif@linux.dev> <20261105183940.2236717-7-usama.arif@linux.dev> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Fri, 06 Nov 2026 18:43:04 +0000 X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > Prepare for keeping a PMD-mapped anonymous THP mapped by a PMD across the > swap round-trip, which makes PG_anon_exclusive have to survive in a swap > PMD and not just in a swap PTE. >=20 > s390 is the one architecture where a swap PMD is not a swap PTE in > disguise: it is an RSTE with its own layout, converted to a fake PTE swap > entry for the common code. Give it its own exclusive bit rather than > borrowing the PTE-format macro, and document it in the RSTE swap layout, > where bit 52 was listed as unused. >=20 > Cc: Alexander Gordeev > Cc: Gerald Schaefer > Cc: Heiko Carstens > Cc: Vasily Gorbik > Cc: linux-s390@vger.kernel.org > Signed-off-by: Usama Arif Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261105183940.2236= 717-1-usama.arif@linux.dev?part=3D6