[kvm-unit-tests PATCH v2 05/14] x86: Add and use X86_PROPERTY_INTEL_PT_NR_RANGES

[Sean Christopherson <seanjc@google.com>]

Add a definition for X86_PROPERTY_INTEL_PT_NR_RANGES, and use it instead
of open coding equivalent logic in the LA57 testcase that verifies the
canonical address behavior of PT MSRs.

No functional change intended.

Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 lib/x86/processor.h | 3 +++
 x86/la57.c          | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/x86/processor.h b/lib/x86/processor.h
index b3ea6881..e3b3df89 100644
--- a/lib/x86/processor.h
+++ b/lib/x86/processor.h
@@ -370,6 +370,9 @@ struct x86_cpu_property {
 
 #define X86_PROPERTY_XSTATE_TILE_SIZE		X86_CPU_PROPERTY(0xd, 18, EAX,  0, 31)
 #define X86_PROPERTY_XSTATE_TILE_OFFSET		X86_CPU_PROPERTY(0xd, 18, EBX,  0, 31)
+
+#define X86_PROPERTY_INTEL_PT_NR_RANGES		X86_CPU_PROPERTY(0x14, 1, EAX,  0, 2)
+
 #define X86_PROPERTY_AMX_MAX_PALETTE_TABLES	X86_CPU_PROPERTY(0x1d, 0, EAX,  0, 31)
 #define X86_PROPERTY_AMX_TOTAL_TILE_BYTES	X86_CPU_PROPERTY(0x1d, 1, EAX,  0, 15)
 #define X86_PROPERTY_AMX_BYTES_PER_TILE		X86_CPU_PROPERTY(0x1d, 1, EAX, 16, 31)
diff --git a/x86/la57.c b/x86/la57.c
index d93e286c..aaf9d974 100644
--- a/x86/la57.c
+++ b/x86/la57.c
@@ -288,7 +288,7 @@ static void __test_canonical_checks(bool force_emulation)
 
 	/* PT filter ranges */
 	if (this_cpu_has(X86_FEATURE_INTEL_PT)) {
-		int n_ranges = cpuid_indexed(0x14, 0x1).a & 0x7;
+		int n_ranges = this_cpu_property(X86_PROPERTY_INTEL_PT_NR_RANGES);
 		int i;
 
 		for (i = 0 ; i < n_ranges ; i++) {
-- 
2.50.0.rc0.642.g800a2b2222-goog