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 224B0C531DC for ; Fri, 16 Aug 2024 11:11:43 +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=VXRiavsh0gCA6/6TWRLDR8hBEK/OIKrUciu8oFH41+A=; b=TXT5e5Fr5ADqTT FAvzeCJpNBsBHWIwaaV7kpLdBRLN0TjBSXc8LtkpwhyT18GewNKl13JXxG2E2MzfGqghRnY9R9oOC GQ/1jUDbUlUgeVpKjAlC+CGNfuDyjU5fA8uFZlTPl7b0tyhkgg5IACCofW9SyuUNSyDcUbmYrL5w9 VrhBsIwCy8DdlucyaJ4Se8OioXUTp9tJ6lt+eZVGN8QXLKquEHNd4n85tyQ0Sg1af+wFmrZB2/HuV OTESfwgtdR25EVmhdVIz473XmwqKxRVXIev1tyzDvSwUlvgJg2/6TmPoq0vm6dtvjMjTHCWx43vsZ mQWqmowE3ACAGezoROzA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1seurs-0000000Cihx-3p0b; Fri, 16 Aug 2024 11:11:40 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1seurB-0000000CiRi-0KKq; Fri, 16 Aug 2024 11:10:58 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 5F58762111; Fri, 16 Aug 2024 11:10:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AD531C32782; Fri, 16 Aug 2024 11:10:50 +0000 (UTC) Date: Fri, 16 Aug 2024 12:10:48 +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 07/40] arm64/gcs: Add manual encodings of GCS instructions Message-ID: References: <20240801-arm64-gcs-v10-0-699e2bd2190b@kernel.org> <20240801-arm64-gcs-v10-7-699e2bd2190b@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20240801-arm64-gcs-v10-7-699e2bd2190b@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240816_041057_203689_66B85BA1 X-CRM114-Status: GOOD ( 12.36 ) 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 01, 2024 at 01:06:34PM +0100, Mark Brown wrote: > Define C callable functions for GCS instructions used by the kernel. In > order to avoid ambitious toolchain requirements for GCS support these are > manually encoded, this means we have fixed register numbers which will be > a bit limiting for the compiler but none of these should be used in > sufficiently fast paths for this to be a problem. > > Note that GCSSTTR is used to store to EL0. > > Reviewed-by: Thiago Jung Bauermann > Signed-off-by: Mark Brown Acked-by: Catalin Marinas _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv