From patchwork Sun Mar 8 09:49:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Ren X-Patchwork-Id: 11425537 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B864092A for ; Sun, 8 Mar 2020 09:53:44 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 96A8A2084E for ; Sun, 8 Mar 2020 09:53:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="cFTpP7zR"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="oncBC7OE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 96A8A2084E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:MIME-Version: Content-Type:Content-Transfer-Encoding:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=aUh++vFamLUxH/hWUySklGX02oSayeX6dA7qunXUjac=; b=cFTpP7zREFu7aE 1ibjz8nPrJd2ahOd57UBfc2Ox+XzsEMdPbrwhnId4CcSYCWoEwooOstsplYF/XaBBToL7Lte7pD5l 1OPf1rvy5LNZDgw34eCejtbRmByG1vFULkGct+uOXCP/9weIZVedEjp3OxgOz8/d3cGbhPYWwQPlX 4DNzR3ychiqCorZ/wbnHWgPY1VcsoxopQUn0Pn31QornGtKhNMkrYlDjnFz3xKmRFPJnLaRQ47A0j efvcy+mUq/t/ePLNFFSnOMKfYu+5AtPHkVBwXBhadRDi1AwoWG1Eagqzn3bgy43SLrgENrjXNvP2M duUStJHU3G7peYa0tprw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jAscw-0002kR-Eg; Sun, 08 Mar 2020 09:53:42 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jAscp-0002SR-IT for linux-riscv@lists.infradead.org; Sun, 08 Mar 2020 09:53:36 +0000 Received: from localhost.localdomain (unknown [89.208.247.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CF0F82084E; Sun, 8 Mar 2020 09:53:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583661214; bh=mIeF30dk8XepLf65MsnIOdXD9aNqAhyxQIdY1ux2I4U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oncBC7OEpGbGBhNHsUFoTc6m6jijE7vStDC2neSm6LzZpaM0vxsYZJRL1o+mVZeG6 ERWPjYq/0Th/usgmJFYQBdNNLE+/eM/Yv9L4iW5NtWmREw0A/4ITjKRLvFYNx2W5Q1 OJCbxrpoDh3j9EQ/5yPf0VT9G6bCsKAhqHu4AsL8= From: guoren@kernel.org To: paul.walmsley@sifive.com, palmer@dabbelt.com, Anup.Patel@wdc.com, greentime.hu@sifive.com Subject: [RFC PATCH V3 06/11] riscv: Add has_vector detect Date: Sun, 8 Mar 2020 17:49:49 +0800 Message-Id: <20200308094954.13258-7-guoren@kernel.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20200308094954.13258-1-guoren@kernel.org> References: <20200308094954.13258-1-guoren@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200308_015335_640797_DD3A4126 X-CRM114-Status: UNSURE ( 7.60 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [198.145.29.99 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, Guo Ren , arnd@arndb.de, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, linux-riscv@lists.infradead.org, Dave Martin Sender: "linux-riscv" Errors-To: linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org From: Guo Ren This patch is to detect "has_vector" at time of CPU feature parsing. Signed-off-by: Guo Ren --- arch/riscv/kernel/cpufeature.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index c8527d770c98..c9ab24e3c79e 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -16,6 +16,9 @@ unsigned long elf_hwcap __read_mostly; #ifdef CONFIG_FPU bool has_fpu __read_mostly; #endif +#ifdef CONFIG_VECTOR +bool has_vector __read_mostly; +#endif void riscv_fill_hwcap(void) { @@ -73,4 +76,9 @@ void riscv_fill_hwcap(void) if (elf_hwcap & (COMPAT_HWCAP_ISA_F | COMPAT_HWCAP_ISA_D)) has_fpu = true; #endif + +#ifdef CONFIG_VECTOR + if (elf_hwcap & COMPAT_HWCAP_ISA_V) + has_vector = true; +#endif }