From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 45974C3DA4A for ; Fri, 16 Aug 2024 11:12:58 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id CDA548D006D; Fri, 16 Aug 2024 07:12:57 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C89608D0062; Fri, 16 Aug 2024 07:12:57 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B51298D006D; Fri, 16 Aug 2024 07:12:57 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 994EF8D0062 for ; Fri, 16 Aug 2024 07:12:57 -0400 (EDT) Received: from smtpin09.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 5BC68161A2F for ; Fri, 16 Aug 2024 11:12:57 +0000 (UTC) X-FDA: 82457846394.09.85F93F9 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf13.hostedemail.com (Postfix) with ESMTP id CB79320023 for ; Fri, 16 Aug 2024 11:12:55 +0000 (UTC) Authentication-Results: imf13.hostedemail.com; dkim=none; spf=pass (imf13.hostedemail.com: domain of cmarinas@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=cmarinas@kernel.org; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=arm.com (policy=none) ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1723806738; a=rsa-sha256; cv=none; b=bZifcti3T0EB+T6AXNemIn4cuoC2cGih8DXII5qa59FK8Ywpt9E5q5uS2NkLxjpXJeEXnl DVH04R3CEf/lmsOMOKZFDgnV3RvwK4H1QZJJA6oAPzdud6ORCHSWhhDJS/easNHLtPTCxI tbcCjhLgzj9Hfq33toqZJhAbbBIAxUs= ARC-Authentication-Results: i=1; imf13.hostedemail.com; dkim=none; spf=pass (imf13.hostedemail.com: domain of cmarinas@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=cmarinas@kernel.org; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=arm.com (policy=none) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1723806738; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/nEWyGBCcIaPNZDAgRF6MJ0N570eTs8LRj9bNQtJDbE=; b=j3Lram2zFdEkA8wudcfxkT6PvJCwjdY1k4UvQwa2UH52gNV1GgcGwYcLvfU33dnTf5Uubs PpHVuZExjvGoTiDaTZU/Vdqnl4j46Q9SRn/N7jk03owfGd5Xx8XiebAXK2WjjqBaMON+aF Kab/s5mKL+qPbynQ/BrFRtOLDd9WVik= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 009BA61DF8; Fri, 16 Aug 2024 11:12:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5B1F3C4AF0C; Fri, 16 Aug 2024 11:12:49 +0000 (UTC) Date: Fri, 16 Aug 2024 12:12:47 +0100 From: Catalin Marinas To: Mark Brown Cc: Will Deacon , Jonathan Corbet , Andrew Morton , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Arnd Bergmann , Oleg Nesterov , Eric Biederman , Shuah Khan , "Rick P. Edgecombe" , Deepak Gupta , Ard Biesheuvel , Szabolcs Nagy , Kees Cook , "H.J. Lu" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Florian Weimer , Christian Brauner , Thiago Jung Bauermann , Ross Burton , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: Re: [PATCH v10 08/40] arm64/gcs: Provide put_user_gcs() Message-ID: References: <20240801-arm64-gcs-v10-0-699e2bd2190b@kernel.org> <20240801-arm64-gcs-v10-8-699e2bd2190b@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240801-arm64-gcs-v10-8-699e2bd2190b@kernel.org> X-Stat-Signature: 7nqm7mchg5x47xy6cpj5zbfcdk1u8zie X-Rspamd-Queue-Id: CB79320023 X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1723806775-866765 X-HE-Meta: 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 Z6NAHK3n 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, Aug 01, 2024 at 01:06:35PM +0100, Mark Brown wrote: > In order for EL1 to write to an EL0 GCS it must use the GCSSTTR instruction > rather than a normal STTR. Provide a put_user_gcs() which does this. > > Reviewed-by: Thiago Jung Bauermann > Signed-off-by: Mark Brown Reviewed-by: Catalin Marinas