[PATCH] arm64: Enable MRS emulation early

Suzuki K Poulose suzuki.poulose at arm.com
Wed Oct 4 02:48:05 PDT 2017


Make sure the MRS emulation is enabled early enough, such that the
early userspace applications (e.g, those run from initrd) could
use the facility without crashing them.

Fixes: commit 77c97b4ee2129 ("arm64: cpufeature: Expose CPUID registers by emulation")
Reported-by: Matwey V. Kornilov <matwey.kornilov at gmail.com>
Cc: James Morse <james.morse at arm.com>
Cc: Dave Martin <Dave.martin at arm.com>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Will Deacon <will.deacon at arm.com>
Cc: stable at vger.kernel.org
Cc: Mark Rutland <mark.rutland at arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose at arm.com>
---
 arch/arm64/kernel/cpufeature.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 9f9e0064c8c1..276eecab6cea 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -1294,4 +1294,4 @@ static int __init enable_mrs_emulation(void)
 	return 0;
 }
 
-late_initcall(enable_mrs_emulation);
+core_initcall(enable_mrs_emulation);
-- 
2.13.5




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