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From: Len Brown <lenb@kernel.org>
To: x86@kernel.org
Cc: linux-kernel@vger.kernel.org, Len Brown <len.brown@intel.com>
Subject: [PATCH 02/10] x86 tsc_msr: Identify Intel-specific code
Date: Fri, 17 Jun 2016 01:22:44 -0400	[thread overview]
Message-ID: <1fe23c052826bdcfeb3d45045aa02246078cb5a7.1466138954.git.len.brown@intel.com> (raw)
In-Reply-To: <20160617052252.25991-1-lenb@kernel.org>
In-Reply-To: <2199d0e959f7f71a18827268b5d060f8d3831639.1466138954.git.len.brown@intel.com>

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 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;
-- 
2.9.0

  reply	other threads:[~2016-06-17  5:25 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   ` Len Brown [this message]
2016-07-10 18:10     ` [tip:x86/timers] x86/tsc_msr: Identify Intel-specific code tip-bot for Len Brown
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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