From: tip-bot for Len Brown <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: torvalds@linux-foundation.org, peterz@infradead.org,
hpa@zytor.com, tglx@linutronix.de, len.brown@intel.com,
linux-kernel@vger.kernel.org, mingo@kernel.org
Subject: [tip:x86/timers] x86/tsc_msr: Identify Intel-specific code
Date: Sun, 10 Jul 2016 11:10:21 -0700 [thread overview]
Message-ID: <tip-ba8268330dc18d309a39175ea4d2c5d86c2cef09@git.kernel.org> (raw)
In-Reply-To: <1fe23c052826bdcfeb3d45045aa02246078cb5a7.1466138954.git.len.brown@intel.com>
Commit-ID: ba8268330dc18d309a39175ea4d2c5d86c2cef09
Gitweb: http://git.kernel.org/tip/ba8268330dc18d309a39175ea4d2c5d86c2cef09
Author: Len Brown <len.brown@intel.com>
AuthorDate: Fri, 17 Jun 2016 01:22:44 -0400
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Sun, 10 Jul 2016 17:00:12 +0200
x86/tsc_msr: Identify Intel-specific code
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>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1fe23c052826bdcfeb3d45045aa02246078cb5a7.1466138954.git.len.brown@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
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 6aa0f4d..4ec5e56 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;
next prev parent reply other threads:[~2016-07-10 18:10 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-17 5:22 [PATCH 0/10] x86/tsc: fast calibration updates Len Brown
2016-06-17 5:22 ` [PATCH 01/10] Revert "x86/tsc: Add missing Cherrytrail frequency to the table" Len Brown
2016-06-17 5:22 ` [PATCH 02/10] x86 tsc_msr: Identify Intel-specific code Len Brown
2016-07-10 18:10 ` tip-bot for Len Brown [this message]
2016-06-17 5:22 ` [PATCH 03/10] x86 tsc_msr: Remove debugging messages Len Brown
2016-07-10 18:10 ` [tip:x86/timers] x86/tsc_msr: " tip-bot for Len Brown
2016-06-17 5:22 ` [PATCH 04/10] x86 tsc_msr: Update comments, expand definitions Len Brown
2016-07-10 18:11 ` [tip:x86/timers] x86/tsc_msr: " tip-bot for Len Brown
2016-06-17 5:22 ` [PATCH 05/10] x86 tsc_msr: Correct Silvermont reference clock values Len Brown
2016-07-10 18:11 ` [tip:x86/timers] x86/tsc_msr: " tip-bot for Len Brown
2016-06-17 5:22 ` [PATCH 06/10] x86 tsc_msr: Add Airmont " Len Brown
2016-07-10 18:12 ` [tip:x86/timers] x86/tsc_msr: " tip-bot for Len Brown
2016-06-17 5:22 ` [PATCH 07/10] x86 tsc_msr: Extend to include Intel Core Architecture Len Brown
2016-07-10 18:12 ` [tip:x86/timers] x86/tsc_msr: " tip-bot for Len Brown
2016-06-17 5:22 ` [PATCH 08/10] x86 tsc_msr: Remove irqoff around MSR-based TSC enumeration Len Brown
2016-07-10 18:12 ` [tip:x86/timers] x86/tsc_msr: " tip-bot for Len Brown
2016-07-11 19:33 ` tip-bot for Len Brown
2016-06-17 5:22 ` [PATCH 09/10] x86 tsc: enumerate SKL cpu_khz and tsc_khz via CPUID Len Brown
2016-07-10 18:13 ` [tip:x86/timers] x86/tsc: Enumerate " tip-bot for Len Brown
2016-07-11 19:34 ` tip-bot for Len Brown
2016-06-17 5:22 ` [PATCH 10/10] x86 tsc: enumerate BXT " Len Brown
2016-07-10 18:13 ` [tip:x86/timers] x86/tsc: Enumerate " tip-bot for Len Brown
2016-07-11 19:34 ` tip-bot for Len Brown
2016-07-10 18:09 ` [tip:x86/timers] Revert "x86/tsc: Add missing Cherrytrail frequency to the table" tip-bot for Len Brown
2016-06-17 7:36 ` [PATCH 0/10] x86/tsc: fast calibration updates Thomas Gleixner
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