From patchwork Tue May 19 17:54:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Philippe Brucker X-Patchwork-Id: 11558305 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 250E6138A for ; Tue, 19 May 2020 18:01:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E3C3207D3 for ; Tue, 19 May 2020 18:01:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="HkelvqOK" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727066AbgESSBz (ORCPT ); Tue, 19 May 2020 14:01:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728290AbgESSBz (ORCPT ); Tue, 19 May 2020 14:01:55 -0400 Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F7D2C08C5C1 for ; Tue, 19 May 2020 11:01:53 -0700 (PDT) Received: by mail-wr1-x441.google.com with SMTP id i15so372522wrx.10 for ; Tue, 19 May 2020 11:01:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=tdr2nbJDVREjEd6opf3N1PUExNDbBuhp6Y6q/Aa2PEk=; b=HkelvqOK2ASLLh8prk/cDS5hZTdQU9xrr2V3ZxvDu0Sq7ohsTnzBnIMz0gnehYydrd QbNe0r28o6KsNU4c8jG6/OECzBTt1dgbKqKBO3Hy9R096LEbCLBtm5fJCXyPcoLUqC7z nJYdYMckvaByveD0Pss3OR0UJ2rAqvk1aa9NiHwQWgUQzWYyPlH/WdC5rnr0FA7nXTHT wUy4E18JFZwuckNo0n2C9EJ91f2GqeXNIr2Vo1ubIjolcQVPov+bsWVCo6uVm3u+gguw ifDXz+1XuUSPfCuU2aV4GnReJ1qkGO0jRWJcKZ8SusFCa4UK2engyDtkMxBFLorw/oqX 3ZVQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=tdr2nbJDVREjEd6opf3N1PUExNDbBuhp6Y6q/Aa2PEk=; b=IMekpfbs0b5rXoF+x1dDSmBlyLcajXWhnpj+K0E0ZiQfFGixD8DIiJnzY+GnS0hZq6 prcfe6Ob2jIBziAUOaoM832Wl9yO1FaVTW5/jfOOt3LXseEsYoffClWoCDg7XBOyGsb1 WisrBiXBkLM/VS5+c3U5AAaqXzvu8aoIFYCO3aKxXsx/sfNQwhQRz6dOz3rJbu6OrklL ohJ2BhjMFoHxjrH/cO32Kdmp50SabZgwZjdU3P2TwbGjKMq8ZJptDS4ZsnKMAEQo2aF1 VTTFtpOWE6EU1qm3D+uqRcUUul6/fnhCQ70zr+2KdXGaqWEwzeZHCWIFwEDzfWppfbx8 uavw== X-Gm-Message-State: AOAM531PFzT4aIEF6slIKmY/s5pg9mmPtHM5+87vmxf3vnHsTLBLyU0L k7fQe2C5KbpboiD2/DKue04B4g== X-Google-Smtp-Source: ABdhPJynWLyIUGdI5MUqsN8GOzUd3ADLnVQan+95nD7CN0va9fcQVLO9UHUTvmOnyfYBlYSmz6uVWQ== X-Received: by 2002:adf:c508:: with SMTP id q8mr125580wrf.4.1589911312245; Tue, 19 May 2020 11:01:52 -0700 (PDT) Received: from localhost.localdomain ([2001:171b:226e:c200:c43b:ef78:d083:b355]) by smtp.gmail.com with ESMTPSA id 1sm510496wmz.13.2020.05.19.11.01.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 May 2020 11:01:51 -0700 (PDT) From: Jean-Philippe Brucker To: iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-mm@kvack.org Cc: joro@8bytes.org, catalin.marinas@arm.com, will@kernel.org, robin.murphy@arm.com, kevin.tian@intel.com, baolu.lu@linux.intel.com, Jonathan.Cameron@huawei.com, jacob.jun.pan@linux.intel.com, christian.koenig@amd.com, felix.kuehling@amd.com, zhangfei.gao@linaro.org, jgg@ziepe.ca, xuzaibo@huawei.com, fenghua.yu@intel.com, hch@infradead.org, Jean-Philippe Brucker , Suzuki K Poulose Subject: [PATCH v7 09/24] arm64: cpufeature: Export symbol read_sanitised_ftr_reg() Date: Tue, 19 May 2020 19:54:47 +0200 Message-Id: <20200519175502.2504091-10-jean-philippe@linaro.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200519175502.2504091-1-jean-philippe@linaro.org> References: <20200519175502.2504091-1-jean-philippe@linaro.org> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The SMMUv3 driver would like to read the MMFR0 PARANGE field in order to share CPU page tables with devices. Allow the driver to be built as module by exporting the read_sanitized_ftr_reg() cpufeature symbol. Acked-by: Suzuki K Poulose Signed-off-by: Jean-Philippe Brucker --- arch/arm64/kernel/cpufeature.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 9fac745aa7bb..5f6adbf4ae89 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -841,6 +841,7 @@ u64 read_sanitised_ftr_reg(u32 id) BUG_ON(!regp); return regp->sys_val; } +EXPORT_SYMBOL_GPL(read_sanitised_ftr_reg); #define read_sysreg_case(r) \ case r: return read_sysreg_s(r)