From: Wei Huang <wei.huang2@amd.com>
To: "'xen-devel@lists.xensource.com'" <xen-devel@lists.xensource.com>,
Keir Fraser <keir@xen.org>, "Wei, Gang" <gang.wei@intel.com>
Subject: [PATCH 3/5][RFC] lwp: adding support for AMD lightweight profiling
Date: Fri, 11 Feb 2011 10:28:58 -0600 [thread overview]
Message-ID: <4D5563CA.7030807@amd.com> (raw)
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Add LWP related feature flags.
Signed-off-by: Wei Huang <wei.huang2@amd.com>
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exporting patch:
# HG changeset patch
# User Wei Huang <wei.huang2@amd.com>
# Date 1297376709 21600
# Node ID 705de1dacabeb899fae6e8121483b2d88d120e57
# Parent 20d10f3a6d4c6b7357da0cf35a9fe28100cb582d
Add LWP related feature flags.
diff -r 20d10f3a6d4c -r 705de1dacabe xen/include/asm-x86/cpufeature.h
--- a/xen/include/asm-x86/cpufeature.h Thu Feb 10 16:17:01 2011 -0600
+++ b/xen/include/asm-x86/cpufeature.h Thu Feb 10 16:25:09 2011 -0600
@@ -207,6 +207,8 @@
#define cpu_has_xsave boot_cpu_has(X86_FEATURE_XSAVE)
+#define cpu_has_lwp boot_cpu_has(X86_FEATURE_LWP)
+
#define cpu_has_arch_perfmon boot_cpu_has(X86_FEATURE_ARCH_PERFMON)
#define cpu_has_rdtscp boot_cpu_has(X86_FEATURE_RDTSCP)
diff -r 20d10f3a6d4c -r 705de1dacabe xen/include/asm-x86/msr-index.h
--- a/xen/include/asm-x86/msr-index.h Thu Feb 10 16:17:01 2011 -0600
+++ b/xen/include/asm-x86/msr-index.h Thu Feb 10 16:25:09 2011 -0600
@@ -253,6 +253,10 @@
#define MSR_AMD_PATCHLEVEL 0x0000008b
#define MSR_AMD_PATCHLOADER 0xc0010020
+/* AMD Lightweight Profiling MSRs */
+#define MSR_AMD64_LWP_CFG 0xc0000105
+#define MSR_AMD64_LWP_CBADDR 0xc0000106
+
/* AMD OS Visible Workaround MSRs */
#define MSR_AMD_OSVW_ID_LENGTH 0xc0010140
#define MSR_AMD_OSVW_STATUS 0xc0010141
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