linux-kernel - [PATCH v2 02/42] KVM: sefltests: Use CPUID_XSAVE and CPUID_OSXAVE instead of X86_FEATURE

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Message-Id: <20220614200707.3315957-3-seanjc@google.com>
Date:   Tue, 14 Jun 2022 20:06:27 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sean Christopherson <seanjc@...gle.com>,
        Jim Mattson <jmattson@...gle.com>
Subject: [PATCH v2 02/42] KVM: sefltests: Use CPUID_XSAVE and CPUID_OSXAVE
 instead of X86_FEATURE_*

Rename X86_FEATURE_* macros to CPUID_* in the AMX and CR4/CPUID sync
tests to free up the X86_FEATURE_* names for KVM-Unit-Tests style CPUID
automagic where the function, leaf, register, and bit for the feature is
embedded in its macro value.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 tools/testing/selftests/kvm/include/x86_64/processor.h   | 4 ++++
 tools/testing/selftests/kvm/x86_64/amx_test.c            | 9 +++------
 tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c | 7 ++-----
 .../selftests/kvm/x86_64/svm_nested_soft_inject_test.c   | 3 +--
 4 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h
index 32964d7b2218..2b13ea74362a 100644
--- a/tools/testing/selftests/kvm/include/x86_64/processor.h
+++ b/tools/testing/selftests/kvm/include/x86_64/processor.h
@@ -48,6 +48,7 @@
 #define CPUID_SMX		(1ul << 6)
 #define CPUID_PCID		(1ul << 17)
 #define CPUID_XSAVE		(1ul << 26)
+#define CPUID_OSXSAVE		(1ul << 27)
 
 /* CPUID.7.EBX */
 #define CPUID_FSGSBASE		(1ul << 0)
@@ -62,6 +63,9 @@
 /* CPUID.0x8000_0001.EDX */
 #define CPUID_GBPAGES		(1ul << 26)
 
+/* CPUID.0x8000_000A.EDX */
+#define CPUID_NRIPS		BIT(3)
+
 /* Page table bitfield declarations */
 #define PTE_PRESENT_MASK        BIT_ULL(0)
 #define PTE_WRITABLE_MASK       BIT_ULL(1)
diff --git a/tools/testing/selftests/kvm/x86_64/amx_test.c b/tools/testing/selftests/kvm/x86_64/amx_test.c
index 95f59653dbce..7127873bb0cb 100644
--- a/tools/testing/selftests/kvm/x86_64/amx_test.c
+++ b/tools/testing/selftests/kvm/x86_64/amx_test.c
@@ -25,9 +25,6 @@
 # error This test is 64-bit only
 #endif
 
-#define X86_FEATURE_XSAVE		(1 << 26)
-#define X86_FEATURE_OSXSAVE		(1 << 27)
-
 #define NUM_TILES			8
 #define TILE_SIZE			1024
 #define XSAVE_SIZE			((NUM_TILES * TILE_SIZE) + PAGE_SIZE)
@@ -128,9 +125,9 @@ static inline void check_cpuid_xsave(void)
 	eax = 1;
 	ecx = 0;
 	cpuid(&eax, &ebx, &ecx, &edx);
-	if (!(ecx & X86_FEATURE_XSAVE))
+	if (!(ecx & CPUID_XSAVE))
 		GUEST_ASSERT(!"cpuid: no CPU xsave support!");
-	if (!(ecx & X86_FEATURE_OSXSAVE))
+	if (!(ecx & CPUID_OSXSAVE))
 		GUEST_ASSERT(!"cpuid: no OS xsave support!");
 }
 
@@ -333,7 +330,7 @@ int main(int argc, char *argv[])
 	vm = vm_create_with_one_vcpu(&vcpu, guest_code);
 
 	entry = kvm_get_supported_cpuid_entry(1);
-	TEST_REQUIRE(entry->ecx & X86_FEATURE_XSAVE);
+	TEST_REQUIRE(entry->ecx & CPUID_XSAVE);
 
 	TEST_REQUIRE(kvm_get_cpuid_max_basic() >= 0xd);
 
diff --git a/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c b/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c
index a80940ac420f..8b0bb36205d9 100644
--- a/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c
+++ b/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c
@@ -19,9 +19,6 @@
 #include "kvm_util.h"
 #include "processor.h"
 
-#define X86_FEATURE_XSAVE	(1<<26)
-#define X86_FEATURE_OSXSAVE	(1<<27)
-
 static inline bool cr4_cpuid_is_sync(void)
 {
 	int func, subfunc;
@@ -36,7 +33,7 @@ static inline bool cr4_cpuid_is_sync(void)
 
 	cr4 = get_cr4();
 
-	return (!!(ecx & X86_FEATURE_OSXSAVE)) == (!!(cr4 & X86_CR4_OSXSAVE));
+	return (!!(ecx & CPUID_OSXSAVE)) == (!!(cr4 & X86_CR4_OSXSAVE));
 }
 
 static void guest_code(void)
@@ -70,7 +67,7 @@ int main(int argc, char *argv[])
 	struct ucall uc;
 
 	entry = kvm_get_supported_cpuid_entry(1);
-	TEST_REQUIRE(entry->ecx & X86_FEATURE_XSAVE);
+	TEST_REQUIRE(entry->ecx & CPUID_XSAVE);
 
 	/* Tell stdout not to buffer its content */
 	setbuf(stdout, NULL);
diff --git a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c
index 1c3f457aa3aa..051f70167074 100644
--- a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c
+++ b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c
@@ -19,7 +19,6 @@
 #include "test_util.h"
 
 #define INT_NR			0x20
-#define X86_FEATURE_NRIPS	BIT(3)
 
 static_assert(ATOMIC_INT_LOCK_FREE == 2, "atomic int is not lockless");
 
@@ -204,7 +203,7 @@ int main(int argc, char *argv[])
 	nested_svm_check_supported();
 
 	cpuid = kvm_get_supported_cpuid_entry(0x8000000a);
-	TEST_ASSERT(cpuid->edx & X86_FEATURE_NRIPS,
+	TEST_ASSERT(cpuid->edx & CPUID_NRIPS,
 		    "KVM with nSVM is supposed to unconditionally advertise nRIP Save\n");
 
 	atomic_init(&nmi_stage, 0);
-- 
2.36.1.476.g0c4daa206d-goog