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-rw-r--r--arch/x86/include/asm/cpufeatures.h9
-rw-r--r--arch/x86/include/asm/kvm-x86-ops.h6
-rw-r--r--arch/x86/include/asm/kvm_host.h89
-rw-r--r--arch/x86/include/asm/svm.h10
-rw-r--r--arch/x86/include/uapi/asm/kvm.h3
5 files changed, 72 insertions, 45 deletions
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index 353b054812de..cb8ca46213be 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -226,10 +226,9 @@
/* Virtualization flags: Linux defined, word 8 */
#define X86_FEATURE_TPR_SHADOW ( 8*32+ 0) /* Intel TPR Shadow */
-#define X86_FEATURE_VNMI ( 8*32+ 1) /* Intel Virtual NMI */
-#define X86_FEATURE_FLEXPRIORITY ( 8*32+ 2) /* Intel FlexPriority */
-#define X86_FEATURE_EPT ( 8*32+ 3) /* Intel Extended Page Table */
-#define X86_FEATURE_VPID ( 8*32+ 4) /* Intel Virtual Processor ID */
+#define X86_FEATURE_FLEXPRIORITY ( 8*32+ 1) /* Intel FlexPriority */
+#define X86_FEATURE_EPT ( 8*32+ 2) /* Intel Extended Page Table */
+#define X86_FEATURE_VPID ( 8*32+ 3) /* Intel Virtual Processor ID */
#define X86_FEATURE_VMMCALL ( 8*32+15) /* Prefer VMMCALL to VMCALL */
#define X86_FEATURE_XENPV ( 8*32+16) /* "" Xen paravirtual guest */
@@ -338,6 +337,7 @@
#define X86_FEATURE_VIRT_SSBD (13*32+25) /* Virtualized Speculative Store Bypass Disable */
#define X86_FEATURE_AMD_SSB_NO (13*32+26) /* "" Speculative Store Bypass is fixed in hardware. */
#define X86_FEATURE_CPPC (13*32+27) /* Collaborative Processor Performance Control */
+#define X86_FEATURE_AMD_PSFD (13*32+28) /* "" Predictive Store Forwarding Disable */
#define X86_FEATURE_BTC_NO (13*32+29) /* "" Not vulnerable to Branch Type Confusion */
#define X86_FEATURE_BRS (13*32+31) /* Branch Sampling available */
@@ -370,6 +370,7 @@
#define X86_FEATURE_VGIF (15*32+16) /* Virtual GIF */
#define X86_FEATURE_X2AVIC (15*32+18) /* Virtual x2apic */
#define X86_FEATURE_V_SPEC_CTRL (15*32+20) /* Virtual SPEC_CTRL */
+#define X86_FEATURE_VNMI (15*32+25) /* Virtual NMI */
#define X86_FEATURE_SVME_ADDR_CHK (15*32+28) /* "" SVME addr check */
/* Intel-defined CPU features, CPUID level 0x00000007:0 (ECX), word 16 */
diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h
index 8dc345cc6318..13bc212cd4bc 100644
--- a/arch/x86/include/asm/kvm-x86-ops.h
+++ b/arch/x86/include/asm/kvm-x86-ops.h
@@ -54,8 +54,8 @@ KVM_X86_OP(set_rflags)
KVM_X86_OP(get_if_flag)
KVM_X86_OP(flush_tlb_all)
KVM_X86_OP(flush_tlb_current)
-KVM_X86_OP_OPTIONAL(tlb_remote_flush)
-KVM_X86_OP_OPTIONAL(tlb_remote_flush_with_range)
+KVM_X86_OP_OPTIONAL(flush_remote_tlbs)
+KVM_X86_OP_OPTIONAL(flush_remote_tlbs_range)
KVM_X86_OP(flush_tlb_gva)
KVM_X86_OP(flush_tlb_guest)
KVM_X86_OP(vcpu_pre_run)
@@ -68,6 +68,8 @@ KVM_X86_OP(get_interrupt_shadow)
KVM_X86_OP(patch_hypercall)
KVM_X86_OP(inject_irq)
KVM_X86_OP(inject_nmi)
+KVM_X86_OP_OPTIONAL_RET0(is_vnmi_pending)
+KVM_X86_OP_OPTIONAL_RET0(set_vnmi_pending)
KVM_X86_OP(inject_exception)
KVM_X86_OP(cancel_injection)
KVM_X86_OP(interrupt_allowed)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 808c292ad3f4..fb9d1f2d6136 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -420,6 +420,10 @@ struct kvm_mmu_root_info {
#define KVM_MMU_NUM_PREV_ROOTS 3
+#define KVM_MMU_ROOT_CURRENT BIT(0)
+#define KVM_MMU_ROOT_PREVIOUS(i) BIT(1+i)
+#define KVM_MMU_ROOTS_ALL (BIT(1 + KVM_MMU_NUM_PREV_ROOTS) - 1)
+
#define KVM_HAVE_MMU_RWLOCK
struct kvm_mmu_page;
@@ -439,9 +443,8 @@ struct kvm_mmu {
gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
gpa_t gva_or_gpa, u64 access,
struct x86_exception *exception);
- int (*sync_page)(struct kvm_vcpu *vcpu,
- struct kvm_mmu_page *sp);
- void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root_hpa);
+ int (*sync_spte)(struct kvm_vcpu *vcpu,
+ struct kvm_mmu_page *sp, int i);
struct kvm_mmu_root_info root;
union kvm_cpu_role cpu_role;
union kvm_mmu_page_role root_role;
@@ -479,11 +482,6 @@ struct kvm_mmu {
u64 pdptrs[4]; /* pae */
};
-struct kvm_tlb_range {
- u64 start_gfn;
- u64 pages;
-};
-
enum pmc_type {
KVM_PMC_GP = 0,
KVM_PMC_FIXED,
@@ -515,6 +513,7 @@ struct kvm_pmc {
#define MSR_ARCH_PERFMON_FIXED_CTR_MAX (MSR_ARCH_PERFMON_FIXED_CTR0 + KVM_PMC_MAX_FIXED - 1)
#define KVM_AMD_PMC_MAX_GENERIC 6
struct kvm_pmu {
+ u8 version;
unsigned nr_arch_gp_counters;
unsigned nr_arch_fixed_counters;
unsigned available_event_types;
@@ -527,7 +526,6 @@ struct kvm_pmu {
u64 global_ovf_ctrl_mask;
u64 reserved_bits;
u64 raw_event_mask;
- u8 version;
struct kvm_pmc gp_counters[KVM_INTEL_PMC_MAX_GENERIC];
struct kvm_pmc fixed_counters[KVM_PMC_MAX_FIXED];
struct irq_work irq_work;
@@ -876,7 +874,8 @@ struct kvm_vcpu_arch {
u64 tsc_scaling_ratio; /* current scaling ratio */
atomic_t nmi_queued; /* unprocessed asynchronous NMIs */
- unsigned nmi_pending; /* NMI queued after currently running handler */
+ /* Number of NMIs pending injection, not including hardware vNMIs. */
+ unsigned int nmi_pending;
bool nmi_injected; /* Trying to inject an NMI this entry */
bool smi_pending; /* SMI queued after currently running handler */
u8 handling_intr_from_guest;
@@ -947,23 +946,6 @@ struct kvm_vcpu_arch {
u64 msr_kvm_poll_control;
- /*
- * Indicates the guest is trying to write a gfn that contains one or
- * more of the PTEs used to translate the write itself, i.e. the access
- * is changing its own translation in the guest page tables. KVM exits
- * to userspace if emulation of the faulting instruction fails and this
- * flag is set, as KVM cannot make forward progress.
- *
- * If emulation fails for a write to guest page tables, KVM unprotects
- * (zaps) the shadow page for the target gfn and resumes the guest to
- * retry the non-emulatable instruction (on hardware). Unprotecting the
- * gfn doesn't allow forward progress for a self-changing access because
- * doing so also zaps the translation for the gfn, i.e. retrying the
- * instruction will hit a !PRESENT fault, which results in a new shadow
- * page and sends KVM back to square one.
- */
- bool write_fault_to_shadow_pgtable;
-
/* set at EPT violation at this point */
unsigned long exit_qualification;
@@ -1602,9 +1584,9 @@ struct kvm_x86_ops {
void (*flush_tlb_all)(struct kvm_vcpu *vcpu);
void (*flush_tlb_current)(struct kvm_vcpu *vcpu);
- int (*tlb_remote_flush)(struct kvm *kvm);
- int (*tlb_remote_flush_with_range)(struct kvm *kvm,
- struct kvm_tlb_range *range);
+ int (*flush_remote_tlbs)(struct kvm *kvm);
+ int (*flush_remote_tlbs_range)(struct kvm *kvm, gfn_t gfn,
+ gfn_t nr_pages);
/*
* Flush any TLB entries associated with the given GVA.
@@ -1638,6 +1620,13 @@ struct kvm_x86_ops {
int (*nmi_allowed)(struct kvm_vcpu *vcpu, bool for_injection);
bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
+ /* Whether or not a virtual NMI is pending in hardware. */
+ bool (*is_vnmi_pending)(struct kvm_vcpu *vcpu);
+ /*
+ * Attempt to pend a virtual NMI in harware. Returns %true on success
+ * to allow using static_call_ret0 as the fallback.
+ */
+ bool (*set_vnmi_pending)(struct kvm_vcpu *vcpu);
void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
void (*enable_irq_window)(struct kvm_vcpu *vcpu);
void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
@@ -1808,8 +1797,8 @@ void kvm_arch_free_vm(struct kvm *kvm);
#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLB
static inline int kvm_arch_flush_remote_tlb(struct kvm *kvm)
{
- if (kvm_x86_ops.tlb_remote_flush &&
- !static_call(kvm_x86_tlb_remote_flush)(kvm))
+ if (kvm_x86_ops.flush_remote_tlbs &&
+ !static_call(kvm_x86_flush_remote_tlbs)(kvm))
return 0;
else
return -ENOTSUPP;
@@ -1907,6 +1896,25 @@ u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
* EMULTYPE_COMPLETE_USER_EXIT - Set when the emulator should update interruptibility
* state and inject single-step #DBs after skipping
* an instruction (after completing userspace I/O).
+ *
+ * EMULTYPE_WRITE_PF_TO_SP - Set when emulating an intercepted page fault that
+ * is attempting to write a gfn that contains one or
+ * more of the PTEs used to translate the write itself,
+ * and the owning page table is being shadowed by KVM.
+ * If emulation of the faulting instruction fails and
+ * this flag is set, KVM will exit to userspace instead
+ * of retrying emulation as KVM cannot make forward
+ * progress.
+ *
+ * If emulation fails for a write to guest page tables,
+ * KVM unprotects (zaps) the shadow page for the target
+ * gfn and resumes the guest to retry the non-emulatable
+ * instruction (on hardware). Unprotecting the gfn
+ * doesn't allow forward progress for a self-changing
+ * access because doing so also zaps the translation for
+ * the gfn, i.e. retrying the instruction will hit a
+ * !PRESENT fault, which results in a new shadow page
+ * and sends KVM back to square one.
*/
#define EMULTYPE_NO_DECODE (1 << 0)
#define EMULTYPE_TRAP_UD (1 << 1)
@@ -1916,6 +1924,7 @@ u64 vcpu_tsc_khz(struct kvm_vcpu *vcpu);
#define EMULTYPE_VMWARE_GP (1 << 5)
#define EMULTYPE_PF (1 << 6)
#define EMULTYPE_COMPLETE_USER_EXIT (1 << 7)
+#define EMULTYPE_WRITE_PF_TO_SP (1 << 8)
int kvm_emulate_instruction(struct kvm_vcpu *vcpu, int emulation_type);
int kvm_emulate_instruction_from_buffer(struct kvm_vcpu *vcpu,
@@ -1994,14 +2003,11 @@ static inline int __kvm_irq_line_state(unsigned long *irq_state,
return !!(*irq_state);
}
-#define KVM_MMU_ROOT_CURRENT BIT(0)
-#define KVM_MMU_ROOT_PREVIOUS(i) BIT(1+i)
-#define KVM_MMU_ROOTS_ALL (~0UL)
-
int kvm_pic_set_irq(struct kvm_pic *pic, int irq, int irq_source_id, int level);
void kvm_pic_clear_all(struct kvm_pic *pic, int irq_source_id);
void kvm_inject_nmi(struct kvm_vcpu *vcpu);
+int kvm_get_nr_pending_nmis(struct kvm_vcpu *vcpu);
void kvm_update_dr7(struct kvm_vcpu *vcpu);
@@ -2041,8 +2047,8 @@ int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa, u64 error_code,
void *insn, int insn_len);
void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
-void kvm_mmu_invalidate_gva(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
- gva_t gva, hpa_t root_hpa);
+void kvm_mmu_invalidate_addr(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
+ u64 addr, unsigned long roots);
void kvm_mmu_invpcid_gva(struct kvm_vcpu *vcpu, gva_t gva, unsigned long pcid);
void kvm_mmu_new_pgd(struct kvm_vcpu *vcpu, gpa_t new_pgd);
@@ -2204,4 +2210,11 @@ int memslot_rmap_alloc(struct kvm_memory_slot *slot, unsigned long npages);
KVM_X86_QUIRK_FIX_HYPERCALL_INSN | \
KVM_X86_QUIRK_MWAIT_NEVER_UD_FAULTS)
+/*
+ * KVM previously used a u32 field in kvm_run to indicate the hypercall was
+ * initiated from long mode. KVM now sets bit 0 to indicate long mode, but the
+ * remaining 31 lower bits must be 0 to preserve ABI.
+ */
+#define KVM_EXIT_HYPERCALL_MBZ GENMASK_ULL(31, 1)
+
#endif /* _ASM_X86_KVM_HOST_H */
diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h
index 770dcf75eaa9..e7c7379d6ac7 100644
--- a/arch/x86/include/asm/svm.h
+++ b/arch/x86/include/asm/svm.h
@@ -183,6 +183,12 @@ struct __attribute__ ((__packed__)) vmcb_control_area {
#define V_GIF_SHIFT 9
#define V_GIF_MASK (1 << V_GIF_SHIFT)
+#define V_NMI_PENDING_SHIFT 11
+#define V_NMI_PENDING_MASK (1 << V_NMI_PENDING_SHIFT)
+
+#define V_NMI_BLOCKING_SHIFT 12
+#define V_NMI_BLOCKING_MASK (1 << V_NMI_BLOCKING_SHIFT)
+
#define V_INTR_PRIO_SHIFT 16
#define V_INTR_PRIO_MASK (0x0f << V_INTR_PRIO_SHIFT)
@@ -197,6 +203,9 @@ struct __attribute__ ((__packed__)) vmcb_control_area {
#define V_GIF_ENABLE_SHIFT 25
#define V_GIF_ENABLE_MASK (1 << V_GIF_ENABLE_SHIFT)
+#define V_NMI_ENABLE_SHIFT 26
+#define V_NMI_ENABLE_MASK (1 << V_NMI_ENABLE_SHIFT)
+
#define AVIC_ENABLE_SHIFT 31
#define AVIC_ENABLE_MASK (1 << AVIC_ENABLE_SHIFT)
@@ -278,7 +287,6 @@ static_assert((AVIC_MAX_PHYSICAL_ID & AVIC_PHYSICAL_MAX_INDEX_MASK) == AVIC_MAX_
static_assert((X2AVIC_MAX_PHYSICAL_ID & AVIC_PHYSICAL_MAX_INDEX_MASK) == X2AVIC_MAX_PHYSICAL_ID);
#define AVIC_HPA_MASK ~((0xFFFULL << 52) | 0xFFF)
-#define VMCB_AVIC_APIC_BAR_MASK 0xFFFFFFFFFF000ULL
struct vmcb_seg {
diff --git a/arch/x86/include/uapi/asm/kvm.h b/arch/x86/include/uapi/asm/kvm.h
index 7f467fe05d42..1a6a1f987949 100644
--- a/arch/x86/include/uapi/asm/kvm.h
+++ b/arch/x86/include/uapi/asm/kvm.h
@@ -559,4 +559,7 @@ struct kvm_pmu_event_filter {
#define KVM_VCPU_TSC_CTRL 0 /* control group for the timestamp counter (TSC) */
#define KVM_VCPU_TSC_OFFSET 0 /* attribute for the TSC offset */
+/* x86-specific KVM_EXIT_HYPERCALL flags. */
+#define KVM_EXIT_HYPERCALL_LONG_MODE BIT(0)
+
#endif /* _ASM_X86_KVM_H */
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-30 15:34:34 +0000