From: Andreas Herrmann <andreas.herrmann3@amd.com>
To: Ingo Molnar <mingo@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>
Cc: <x86@kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH 3/4] x86, cacheinfo: Make use of CPUID 0x8000001d for cache information on AMD
Date: Fri, 19 Oct 2012 11:00:49 +0200 [thread overview]
Message-ID: <20121019090049.GF26718@alberich> (raw)
In-Reply-To: <20121019085519.GC26718@alberich>
Rely on CPUID 0x8000001d for cache information when AMD CPUID topology
extensions are available.
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
---
arch/x86/kernel/cpu/intel_cacheinfo.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index 8ce7a83..cd2e1cc 100644
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -538,7 +538,11 @@ __cpuinit cpuid4_cache_lookup_regs(int index,
unsigned edx;
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {
- amd_cpuid4(index, &eax, &ebx, &ecx);
+ if (cpu_has_topoext)
+ cpuid_count(0x8000001d, index, &eax.full,
+ &ebx.full, &ecx.full, &edx);
+ else
+ amd_cpuid4(index, &eax, &ebx, &ecx);
amd_init_l3_cache(this_leaf, index);
} else {
cpuid_count(4, index, &eax.full, &ebx.full, &ecx.full, &edx);
--
1.7.8.6
next prev parent reply other threads:[~2012-10-19 9:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-19 8:55 [PATCH 0/4] x86, cacheinfo: Use AMD topology extensions Andreas Herrmann
2012-10-19 8:58 ` [PATCH 1/4] x86: Add cpu_has_topoext Andreas Herrmann
2012-11-13 21:58 ` [tip:x86/cpu] " tip-bot for Andreas Herrmann
2012-10-19 8:59 ` [PATCH 2/4] x86, cacheinfo: Determine number of cache leafs using CPUID 0x8000001d on AMD Andreas Herrmann
2012-11-13 21:59 ` [tip:x86/cpu] " tip-bot for Andreas Herrmann
2012-10-19 9:00 ` Andreas Herrmann [this message]
2012-11-13 22:00 ` [tip:x86/cpu] x86, cacheinfo: Make use of CPUID 0x8000001d for cache information " tip-bot for Andreas Herrmann
2012-10-19 9:02 ` [PATCH 4/4] x86, cacheinfo: Base cache sharing info on CPUID 0x8000001d " Andreas Herrmann
2012-11-13 22:01 ` [tip:x86/cpu] " tip-bot for Andreas Herrmann
2012-11-06 20:47 ` [PATCH 0/4] x86, cacheinfo: Use AMD topology extensions Jacob Shin
2012-11-07 9:48 ` H. Peter Anvin
2012-11-13 18:28 ` Jacob Shin
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