diff mbox series

[v4,10/26] arm64: cpufeature: Export symbol read_sanitised_ftr_reg()

Message ID 20200224182401.353359-11-jean-philippe@linaro.org
State Accepted
Commit 6f3c4afae9805bda1682e0ad17b8ce56d85c9a83
Headers show
Series iommu: Shared Virtual Addressing and SMMUv3 support | expand

Commit Message

Jean-Philippe Brucker Feb. 24, 2020, 6:23 p.m. UTC 
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.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
 arch/arm64/kernel/cpufeature.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 0b6715625cf6..a96d2fb12e4d 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -838,6 +838,7 @@  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)