From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 4436E2D46B1; Fri, 28 Nov 2025 17:22:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764350568; cv=none; b=leipIxcqTTTBlAEIUqGqLjCbuKmA+vOh403+lkh+9g4Yrjm5gz2ksyv23EzhwkL1sCKyMjd4ddCCrqy/lNf7x6/ksmMjwES96cTt0QfmQT3bKYRaaGt+B6AK5cum21zKQJHCCA3FtHCyjFkLxx8CQn4LuSsXvZWSiryaHu/KoMM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764350568; c=relaxed/simple; bh=HZcnp6RJdflNQaNkZhoP9wB0ZXvSknhNlVPsemL0eIQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VkLc4HYMUvt0pZABURuzNMDXe3K+HjF3XfSxoh55dups76cRTKLkimipUYUhcKklWDC89IOEwZnreIi91jNbUBkM28W+hx+wgs+Ba/UUhivaDgMAs8FUt9mstChKLQEqROb+HxVWOWO1ov2vx2NIABof3QuS6pdzruNYKb0jJaY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=exD/y7j9; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=M4CSl6gq; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="exD/y7j9"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="M4CSl6gq" Date: Fri, 28 Nov 2025 18:22:42 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1764350564; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=gdQDOqyfil+DNkwzLkg7VF450RbTdgCc8NqtMW6uRW4=; b=exD/y7j999jCv6bS9IMXmr8sD3f5ooPKDx0FbXkjx8Zj/4jZp0LGdf83r48cRlz7csM4Ga 774RSGWxq23m0i77jv/+q1WYKBFSNoHeK0SHXnAycfz20MDDwCsouqDKIt0UomOqQW2JEt Ifm/vEMXWcO7DbLtSF415CnpmUT2oDJIBZ9e17a+9JOTcn0g0uIN9m0bLfNklQ8Xln2Xu6 LvEijg/kINBpfKtj9Zr2zSHXizNpjkYvM1MVykXCXlUGgNkpllZmDS64AXJTlju+wuK9M6 r6QIBEfXSaR7tiPshZakf/KZ37DzfOetx999jxpGfk44srLtQmtiUsi98BQykQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1764350564; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=gdQDOqyfil+DNkwzLkg7VF450RbTdgCc8NqtMW6uRW4=; b=M4CSl6gqnCuJP+oILiEsB+RMaQsPNdVWA8BsfnJdgpZXuMRB31+BAQu7VwjE/LRYhROu4e 95a+J06qa8kBsGCA== From: Sebastian Andrzej Siewior To: "Russell King (Oracle)" Cc: Xie Yuanbin , akpm@linux-foundation.org, arnd@arndb.de, brauner@kernel.org, david.laight@runbox.com, hch@lst.de, jack@suse.com, kuninori.morimoto.gx@renesas.com, liaohua4@huawei.com, lilinjie8@huawei.com, linux-arm-kernel@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, marc.zyngier@arm.com, nico@fluxnic.net, pangliyuan1@huawei.com, pfalcato@suse.de, punitagrawal@gmail.com, rjw@rjwysocki.net, rppt@kernel.org, tony@atomide.com, vbabka@suse.cz, viro@zeniv.linux.org.uk, wangkefeng.wang@huawei.com, will@kernel.org, wozizhi@huaweicloud.com Subject: Re: [RFC PATCH v2 1/2] ARM/mm/fault: always goto bad_area when handling with page faults of kernel address Message-ID: <20251128172242.cCNBVf7H@linutronix.de> References: <20251127145127.qUXs_UAE@linutronix.de> <20251128022756.9973-1-xieyuanbin1@huawei.com> <20251128120359.Xc09qn1W@linutronix.de> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On 2025-11-28 17:01:18 [+0000], Russell King (Oracle) wrote: > > I hope Russell will add them once he gets to it. They got reviewed, I > > added them to the patch system. > > I'm not sure which patches you're talking about, but discussion is > still ongoing, so it would be greatly premature to merge anything. This thread https://lore.kernel.org/all/20251110145555.2555055-1-bigeasy@linutronix.de/ and the patches are 9459/1 to 9463/1 in your patch system. They address other issues, not this one. > https://lore.kernel.org/r/aSmUnZZATTn3JD7m@willie-the-truck > > There are now many threads each with their own discussion, which > makes it more difficult to work out which is the implementation that > should be merged. Clearly, not everyone knows about the other > discussion threads. So Will suggested to let change the handler and handle this case. The other patch is avoiding handling addr > TASK_SIZE. Any preferences from your side? Sebastian