[PATCH v7 09/24] arm64: cpufeature: Export symbol read_sanitised_ftr_reg() - Jean-Philippe Brucker

From: Jean-Philippe Brucker <jean-philippe@linaro.org>
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: fenghua.yu@intel.com, kevin.tian@intel.com, jgg@ziepe.ca,
	catalin.marinas@arm.com,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	robin.murphy@arm.com, hch@infradead.org, zhangfei.gao@linaro.org,
	Jean-Philippe Brucker <jean-philippe@linaro.org>,
	felix.kuehling@amd.com, will@kernel.org,
	christian.koenig@amd.com
Subject: [PATCH v7 09/24] arm64: cpufeature: Export symbol read_sanitised_ftr_reg()
Date: Tue, 19 May 2020 19:54:47 +0200	[thread overview]
Message-ID: <20200519175502.2504091-10-jean-philippe@linaro.org> (raw)
In-Reply-To: <20200519175502.2504091-1-jean-philippe@linaro.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 <suzuki.poulose@arm.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
 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)
-- 
2.26.2

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