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[PATCH 1/9] x86 tsc_msr: Identify Intel-specific code

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  [PATCH 1/9] x86 tsc_msr: Identify Intel-specific code Len Brown <lenb@kernel.org> - 2016-03-31 06:20 +0200

#1367800 — [PATCH 1/9] x86 tsc_msr: Identify Intel-specific code

From: Len Brown <len.brown@intel.com>

try_msr_calibrate_tsc() is currently Intel-specific,
and should not execute on any other vendor's parts.

Signed-off-by: Len Brown <len.brown@intel.com>
---
 arch/x86/kernel/tsc_msr.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/kernel/tsc_msr.c b/arch/x86/kernel/tsc_msr.c
index 92ae6ac..c16e35b 100644
--- a/arch/x86/kernel/tsc_msr.c
+++ b/arch/x86/kernel/tsc_msr.c
@@ -86,6 +86,9 @@ unsigned long try_msr_calibrate_tsc(void)
 	unsigned long res;
 	int cpu_index;
 
+	if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL)
+		return 0;
+
 	cpu_index = match_cpu(boot_cpu_data.x86, boot_cpu_data.x86_model);
 	if (cpu_index < 0)
 		return 0;
-- 
2.8.0.rc4.16.g56331f8

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