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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A14F7CD13CF for ; Mon, 2 Sep 2024 18:56:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=XIoFOLjivXnaZrt0aadMXFUuof4oWHwwJw5U/Ie68Wk=; b=yu/mg3JDFpwR4h O6chJg7ATONji4KmybF0KTLDZ9GffSSGvwrncog82BWgW4Jpok7SddmupgOW4n07xq3kqyEqmzC28 L0xvs9tBDc5jaWrxKbB9Q5NKjHdf4QDFkB0LYLtfmMjmAPtRbte2iXGFNJdQHKfBt6VO3KDdZlJUp rnXGcDTln1Q9vDSuXdlB1bkj3HDoFEoaBYi8qD30m5nC+MHJCGBa7B9UYfsK+qS/e+qelvj0SwUDh bCfHu5AT5wPERxP+TlbEv5wwz0iqet4ucmHuBaU+VSZ2KH+LfmL3WWOgnvfUw46uV02wp8HOQzdyq t9LBRCs0blNyxfSNCW3w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1slCE0-0000000FKXI-49Rj; Mon, 02 Sep 2024 18:56:28 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1slCCq-0000000FK9e-1Ofg; Mon, 02 Sep 2024 18:55:17 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 613D9A4106A; Mon, 2 Sep 2024 18:55:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6AB9EC4CEC2; Mon, 2 Sep 2024 18:55:09 +0000 (UTC) Date: Mon, 2 Sep 2024 19:55:07 +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 , Yury Khrustalev , Wilco Dijkstra , 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 v12 25/39] arm64/signal: Expose GCS state in signal frames Message-ID: References: <20240829-arm64-gcs-v12-0-42fec947436a@kernel.org> <20240829-arm64-gcs-v12-25-42fec947436a@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20240829-arm64-gcs-v12-25-42fec947436a@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240902_115516_459779_852A4E1C X-CRM114-Status: GOOD ( 12.90 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Thu, Aug 29, 2024 at 12:27:41AM +0100, Mark Brown wrote: > Add a context for the GCS state and include it in the signal context when > running on a system that supports GCS. We reuse the same flags that the > prctl() uses to specify which GCS features are enabled and also provide the > current GCS pointer. > > We do not support enabling GCS via signal return, there is a conflict > between specifying GCSPR_EL0 and allocation of a new GCS and this is not > an ancticipated use case. We also enforce GCS configuration locking on > signal return. > > Signed-off-by: Mark Brown It looks fine to me now. Reviewed-by: Catalin Marinas _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv