From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 CE18633B6C6; Mon, 23 Feb 2026 18:13:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771870416; cv=none; b=HPh77ZnQrKJtB+dEKxKqEArNUJDkv6H2gWeLYdJU6x/higwdoHmOAP2UdcDBy05du3++IkCvaBYcYROq5rWtEW3WxdvB664Y/xSsWgBFnil/Hagqd9tEgOO3VJm4JuSVYLXNicXzB8vGyg0bk3G5j/X2NAA1DFjo0o0yMQJ3Vww= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771870416; c=relaxed/simple; bh=pQshwKNqTCLj/FvhtbZgOYNC+VNMTBvEaSSSD2wSuHE=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=FUNKekZcaawKTkkvlGJ4KUBkwnPL+kCnKJOcW4U4v/6WuFGf04iVGGts+kU+vRH5sA7Zw3qBj2YtjUtOG9PfeyHnDpFZq7e4713IDs4Sx8ebL0eQvoK5XDfIU+jbIibNZRLegEkwYlcQeXkk4njP5eIWgOoUtqI4VEThmTp/qqw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=B3HQ7V1C; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="B3HQ7V1C" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 378FAC116C6; Mon, 23 Feb 2026 18:13:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1771870416; bh=pQshwKNqTCLj/FvhtbZgOYNC+VNMTBvEaSSSD2wSuHE=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=B3HQ7V1CoKgaBIoteEnZFo//C1eOjQmBzA363dlSZJSPGnKwrPagzWWRWHEyGkx/1 6MhwDWWeaCOz0KllZsOTIWSRv2FTaTTuUgO3maOmVNlVD3xKMqbal2bskvscPZ+Bhx 31nhkKYtbH0jAtANiQoO7gCBg3ymcBqFZCfessdQ= Date: Mon, 23 Feb 2026 10:13:35 -0800 From: Andrew Morton To: Alexander Gordeev Cc: Pasha Tatashin , linux-s390@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org Subject: Re: [PATCH 1/4] mm/page_table_check: Pass mm_struct to pxx_user_accessible_page() Message-Id: <20260223101335.aa3696d86341260e03989ac0@linux-foundation.org> In-Reply-To: <68c2f6df2955033cbf1ccbd2b5c2816e72ac345c.1771845678.git.agordeev@linux.ibm.com> References: <68c2f6df2955033cbf1ccbd2b5c2816e72ac345c.1771845678.git.agordeev@linux.ibm.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 23 Feb 2026 12:53:13 +0100 Alexander Gordeev wrote: > From: Tobias Huschle > > Unlike other architectures, s390 does not have means to > distinguish kernel vs user page table entries - neither > an entry itself, nor the address could be used for that. > It is only the mm_struct that indicates whether an entry > in question is mapped to a user space. So pass mm_struct > to pxx_user_accessible_page() callbacks. > > ... > > arch/arm64/include/asm/pgtable.h | 6 +++--- > arch/riscv/include/asm/pgtable.h | 6 +++--- > arch/x86/include/asm/pgtable.h | 6 +++--- > mm/page_table_check.c | 15 ++++++--------- > 4 files changed, 15 insertions(+), 18 deletions(-) Reviewed-by: Andrew Morton I assume this can go into the s390 tree?