1 files changed, 48 insertions, 13 deletions

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index af06ccb7ee34..5653d3553e3e 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -78,7 +78,7 @@ extern unsigned int __ro_after_init kvm_sve_max_vl;
 int __init kvm_arm_init_sve(void);
 
 u32 __attribute_const__ kvm_target_cpu(void);
-int kvm_reset_vcpu(struct kvm_vcpu *vcpu);
+void kvm_reset_vcpu(struct kvm_vcpu *vcpu);
 void kvm_arm_vcpu_destroy(struct kvm_vcpu *vcpu);
 
 struct kvm_hyp_memcache {
@@ -158,6 +158,16 @@ struct kvm_s2_mmu {
 	phys_addr_t	pgd_phys;
 	struct kvm_pgtable *pgt;
 
+	/*
+	 * VTCR value used on the host. For a non-NV guest (or a NV
+	 * guest that runs in a context where its own S2 doesn't
+	 * apply), its T0SZ value reflects that of the IPA size.
+	 *
+	 * For a shadow S2 MMU, T0SZ reflects the PARange exposed to
+	 * the guest.
+	 */
+	u64	vtcr;
+
 	/* The last vcpu id that ran on each physical CPU */
 	int __percpu *last_vcpu_ran;
 
@@ -202,12 +212,34 @@ struct kvm_protected_vm {
 	struct kvm_hyp_memcache teardown_mc;
 };
 
+struct kvm_mpidr_data {
+	u64			mpidr_mask;
+	DECLARE_FLEX_ARRAY(u16, cmpidr_to_idx);
+};
+
+static inline u16 kvm_mpidr_index(struct kvm_mpidr_data *data, u64 mpidr)
+{
+	unsigned long mask = data->mpidr_mask;
+	u64 aff = mpidr & MPIDR_HWID_BITMASK;
+	int nbits, bit, bit_idx = 0;
+	u16 index = 0;
+
+	/*
+	 * If this looks like RISC-V's BEXT or x86's PEXT
+	 * instructions, it isn't by accident.
+	 */
+	nbits = fls(mask);
+	for_each_set_bit(bit, &mask, nbits) {
+		index |= (aff & BIT(bit)) >> (bit - bit_idx);
+		bit_idx++;
+	}
+
+	return index;
+}
+
 struct kvm_arch {
 	struct kvm_s2_mmu mmu;
 
-	/* VTCR_EL2 value for this VM */
-	u64    vtcr;
-
 	/* Interrupt controller */
 	struct vgic_dist	vgic;
 
@@ -239,15 +271,16 @@ struct kvm_arch {
 #define KVM_ARCH_FLAG_VM_COUNTER_OFFSET			5
 	/* Timer PPIs made immutable */
 #define KVM_ARCH_FLAG_TIMER_PPIS_IMMUTABLE		6
-	/* SMCCC filter initialized for the VM */
-#define KVM_ARCH_FLAG_SMCCC_FILTER_CONFIGURED		7
 	/* Initial ID reg values loaded */
-#define KVM_ARCH_FLAG_ID_REGS_INITIALIZED		8
+#define KVM_ARCH_FLAG_ID_REGS_INITIALIZED		7
 	unsigned long flags;
 
 	/* VM-wide vCPU feature set */
 	DECLARE_BITMAP(vcpu_features, KVM_VCPU_MAX_FEATURES);
 
+	/* MPIDR to vcpu index mapping, optional */
+	struct kvm_mpidr_data *mpidr_data;
+
 	/*
 	 * VM-wide PMU filter, implemented as a bitmap and big enough for
 	 * up to 2^10 events (ARMv8.0) or 2^16 events (ARMv8.1+).
@@ -257,6 +290,9 @@ struct kvm_arch {
 
 	cpumask_var_t supported_cpus;
 
+	/* PMCR_EL0.N value for the guest */
+	u8 pmcr_n;
+
 	/* Hypercall features firmware registers' descriptor */
 	struct kvm_smccc_features smccc_feat;
 	struct maple_tree smccc_filter;
@@ -574,9 +610,6 @@ struct kvm_vcpu_arch {
 	/* Cache some mmu pages needed inside spinlock regions */
 	struct kvm_mmu_memory_cache mmu_page_cache;
 
-	/* feature flags */
-	DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES);
-
 	/* Virtual SError ESR to restore when HCR_EL2.VSE is set */
 	u64 vsesr_el2;
 
@@ -1025,7 +1058,7 @@ int kvm_arm_pvtime_has_attr(struct kvm_vcpu *vcpu,
 extern unsigned int __ro_after_init kvm_arm_vmid_bits;
 int __init kvm_arm_vmid_alloc_init(void);
 void __init kvm_arm_vmid_alloc_free(void);
-void kvm_arm_vmid_update(struct kvm_vmid *kvm_vmid);
+bool kvm_arm_vmid_update(struct kvm_vmid *kvm_vmid);
 void kvm_arm_vmid_clear_active(void);
 
 static inline void kvm_arm_pvtime_vcpu_init(struct kvm_vcpu_arch *vcpu_arch)
@@ -1078,6 +1111,8 @@ int kvm_vm_ioctl_mte_copy_tags(struct kvm *kvm,
 			       struct kvm_arm_copy_mte_tags *copy_tags);
 int kvm_vm_ioctl_set_counter_offset(struct kvm *kvm,
 				    struct kvm_arm_counter_offset *offset);
+int kvm_vm_ioctl_get_reg_writable_masks(struct kvm *kvm,
+					struct reg_mask_range *range);
 
 /* Guest/host FPSIMD coordination helpers */
 int kvm_arch_vcpu_run_map_fp(struct kvm_vcpu *vcpu);
@@ -1109,8 +1144,8 @@ static inline bool kvm_set_pmuserenr(u64 val)
 }
 #endif
 
-void kvm_vcpu_load_sysregs_vhe(struct kvm_vcpu *vcpu);
-void kvm_vcpu_put_sysregs_vhe(struct kvm_vcpu *vcpu);
+void kvm_vcpu_load_vhe(struct kvm_vcpu *vcpu);
+void kvm_vcpu_put_vhe(struct kvm_vcpu *vcpu);
 
 int __init kvm_set_ipa_limit(void);