Merging upstream version 6.1.85.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 7 deletions

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index c3ef1fc60..62a44455c 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -535,9 +535,9 @@ static __always_inline void __kvm_cpu_cap_mask(unsigned int leaf)
 }
 
 static __always_inline
-void kvm_cpu_cap_init_scattered(enum kvm_only_cpuid_leafs leaf, u32 mask)
+void kvm_cpu_cap_init_kvm_defined(enum kvm_only_cpuid_leafs leaf, u32 mask)
 {
-	/* Use kvm_cpu_cap_mask for non-scattered leafs. */
+	/* Use kvm_cpu_cap_mask for leafs that aren't KVM-only. */
 	BUILD_BUG_ON(leaf < NCAPINTS);
 
 	kvm_cpu_caps[leaf] = mask;
@@ -547,7 +547,7 @@ void kvm_cpu_cap_init_scattered(enum kvm_only_cpuid_leafs leaf, u32 mask)
 
 static __always_inline void kvm_cpu_cap_mask(enum cpuid_leafs leaf, u32 mask)
 {
-	/* Use kvm_cpu_cap_init_scattered for scattered leafs. */
+	/* Use kvm_cpu_cap_init_kvm_defined for KVM-only leafs. */
 	BUILD_BUG_ON(leaf >= NCAPINTS);
 
 	kvm_cpu_caps[leaf] &= mask;
@@ -652,11 +652,16 @@ void kvm_set_cpu_caps(void)
 		F(AVX_VNNI) | F(AVX512_BF16)
 	);
 
+	kvm_cpu_cap_init_kvm_defined(CPUID_7_2_EDX,
+		F(INTEL_PSFD) | F(IPRED_CTRL) | F(RRSBA_CTRL) | F(DDPD_U) |
+		F(BHI_CTRL) | F(MCDT_NO)
+	);
+
 	kvm_cpu_cap_mask(CPUID_D_1_EAX,
 		F(XSAVEOPT) | F(XSAVEC) | F(XGETBV1) | F(XSAVES) | f_xfd
 	);
 
-	kvm_cpu_cap_init_scattered(CPUID_12_EAX,
+	kvm_cpu_cap_init_kvm_defined(CPUID_12_EAX,
 		SF(SGX1) | SF(SGX2)
 	);
 
@@ -902,13 +907,13 @@ static inline int __do_cpuid_func(struct kvm_cpuid_array *array, u32 function)
 		break;
 	/* function 7 has additional index. */
 	case 7:
-		entry->eax = min(entry->eax, 1u);
+		max_idx = entry->eax = min(entry->eax, 2u);
 		cpuid_entry_override(entry, CPUID_7_0_EBX);
 		cpuid_entry_override(entry, CPUID_7_ECX);
 		cpuid_entry_override(entry, CPUID_7_EDX);
 
-		/* KVM only supports 0x7.0 and 0x7.1, capped above via min(). */
-		if (entry->eax == 1) {
+		/* KVM only supports up to 0x7.2, capped above via min(). */
+		if (max_idx >= 1) {
 			entry = do_host_cpuid(array, function, 1);
 			if (!entry)
 				goto out;
@@ -918,6 +923,16 @@ static inline int __do_cpuid_func(struct kvm_cpuid_array *array, u32 function)
 			entry->ecx = 0;
 			entry->edx = 0;
 		}
+		if (max_idx >= 2) {
+			entry = do_host_cpuid(array, function, 2);
+			if (!entry)
+				goto out;
+
+			cpuid_entry_override(entry, CPUID_7_2_EDX);
+			entry->ecx = 0;
+			entry->ebx = 0;
+			entry->eax = 0;
+		}
 		break;
 	case 0xa: { /* Architectural Performance Monitoring */
 		union cpuid10_eax eax;