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Diffstat (limited to 'arch/riscv/include/asm/kvm_host.h')
-rw-r--r--arch/riscv/include/asm/kvm_host.h225
1 files changed, 115 insertions, 110 deletions
diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h
index 93f43a3e7886..24585304c02b 100644
--- a/arch/riscv/include/asm/kvm_host.h
+++ b/arch/riscv/include/asm/kvm_host.h
@@ -14,10 +14,16 @@
#include <linux/kvm_types.h>
#include <linux/spinlock.h>
#include <asm/hwcap.h>
+#include <asm/kvm_aia.h>
+#include <asm/ptrace.h>
+#include <asm/kvm_tlb.h>
+#include <asm/kvm_vmid.h>
#include <asm/kvm_vcpu_fp.h>
#include <asm/kvm_vcpu_insn.h>
#include <asm/kvm_vcpu_sbi.h>
+#include <asm/kvm_vcpu_sbi_fwft.h>
#include <asm/kvm_vcpu_timer.h>
+#include <asm/kvm_vcpu_pmu.h>
#define KVM_MAX_VCPUS 1024
@@ -25,35 +31,36 @@
#define KVM_VCPU_MAX_FEATURES 0
+#define KVM_IRQCHIP_NUM_PINS 1024
+
#define KVM_REQ_SLEEP \
KVM_ARCH_REQ_FLAGS(0, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
#define KVM_REQ_VCPU_RESET KVM_ARCH_REQ(1)
#define KVM_REQ_UPDATE_HGATP KVM_ARCH_REQ(2)
#define KVM_REQ_FENCE_I \
KVM_ARCH_REQ_FLAGS(3, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
-#define KVM_REQ_HFENCE_GVMA_VMID_ALL KVM_REQ_TLB_FLUSH
#define KVM_REQ_HFENCE_VVMA_ALL \
KVM_ARCH_REQ_FLAGS(4, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
#define KVM_REQ_HFENCE \
KVM_ARCH_REQ_FLAGS(5, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
+#define KVM_REQ_STEAL_UPDATE KVM_ARCH_REQ(6)
-enum kvm_riscv_hfence_type {
- KVM_RISCV_HFENCE_UNKNOWN = 0,
- KVM_RISCV_HFENCE_GVMA_VMID_GPA,
- KVM_RISCV_HFENCE_VVMA_ASID_GVA,
- KVM_RISCV_HFENCE_VVMA_ASID_ALL,
- KVM_RISCV_HFENCE_VVMA_GVA,
-};
+#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE
-struct kvm_riscv_hfence {
- enum kvm_riscv_hfence_type type;
- unsigned long asid;
- unsigned long order;
- gpa_t addr;
- gpa_t size;
-};
+#define KVM_HEDELEG_DEFAULT (BIT(EXC_INST_MISALIGNED) | \
+ BIT(EXC_INST_ILLEGAL) | \
+ BIT(EXC_BREAKPOINT) | \
+ BIT(EXC_SYSCALL) | \
+ BIT(EXC_INST_PAGE_FAULT) | \
+ BIT(EXC_LOAD_PAGE_FAULT) | \
+ BIT(EXC_STORE_PAGE_FAULT))
+
+#define KVM_HIDELEG_DEFAULT (BIT(IRQ_VS_SOFT) | \
+ BIT(IRQ_VS_TIMER) | \
+ BIT(IRQ_VS_EXT))
-#define KVM_RISCV_VCPU_MAX_HFENCE 64
+#define KVM_DIRTY_LOG_MANUAL_CAPS (KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE | \
+ KVM_DIRTY_LOG_INITIALLY_SET)
struct kvm_vm_stat {
struct kvm_vm_stat_generic generic;
@@ -63,26 +70,23 @@ struct kvm_vcpu_stat {
struct kvm_vcpu_stat_generic generic;
u64 ecall_exit_stat;
u64 wfi_exit_stat;
+ u64 wrs_exit_stat;
u64 mmio_exit_user;
u64 mmio_exit_kernel;
u64 csr_exit_user;
u64 csr_exit_kernel;
u64 signal_exits;
u64 exits;
+ u64 instr_illegal_exits;
+ u64 load_misaligned_exits;
+ u64 store_misaligned_exits;
+ u64 load_access_exits;
+ u64 store_access_exits;
};
struct kvm_arch_memory_slot {
};
-struct kvm_vmid {
- /*
- * Writes to vmid_version and vmid happen with vmid_lock held
- * whereas reads happen without any lock held.
- */
- unsigned long vmid_version;
- unsigned long vmid;
-};
-
struct kvm_arch {
/* G-stage vmid */
struct kvm_vmid vmid;
@@ -93,6 +97,12 @@ struct kvm_arch {
/* Guest Timer */
struct kvm_guest_timer timer;
+
+ /* AIA Guest/VM context */
+ struct kvm_aia aia;
+
+ /* KVM_CAP_RISCV_MP_STATE_RESET */
+ bool mp_state_reset;
};
struct kvm_cpu_trap {
@@ -140,6 +150,7 @@ struct kvm_cpu_context {
unsigned long sstatus;
unsigned long hstatus;
union __riscv_fp_state fp;
+ struct __riscv_v_ext_state vector;
};
struct kvm_vcpu_csr {
@@ -153,6 +164,23 @@ struct kvm_vcpu_csr {
unsigned long hvip;
unsigned long vsatp;
unsigned long scounteren;
+ unsigned long senvcfg;
+};
+
+struct kvm_vcpu_config {
+ u64 henvcfg;
+ u64 hstateen0;
+ unsigned long hedeleg;
+};
+
+struct kvm_vcpu_smstateen_csr {
+ unsigned long sstateen0;
+};
+
+struct kvm_vcpu_reset_state {
+ spinlock_t lock;
+ unsigned long pc;
+ unsigned long a1;
};
struct kvm_vcpu_arch {
@@ -174,6 +202,8 @@ struct kvm_vcpu_arch {
unsigned long host_sscratch;
unsigned long host_stvec;
unsigned long host_scounteren;
+ unsigned long host_senvcfg;
+ unsigned long host_sstateen0;
/* CPU context of Host */
struct kvm_cpu_context host_context;
@@ -184,11 +214,11 @@ struct kvm_vcpu_arch {
/* CPU CSR context of Guest VCPU */
struct kvm_vcpu_csr guest_csr;
- /* CPU context upon Guest VCPU reset */
- struct kvm_cpu_context guest_reset_context;
+ /* CPU Smstateen CSR context of Guest VCPU */
+ struct kvm_vcpu_smstateen_csr smstateen_csr;
- /* CPU CSR context upon Guest VCPU reset */
- struct kvm_vcpu_csr guest_reset_csr;
+ /* CPU reset state of Guest VCPU */
+ struct kvm_vcpu_reset_state reset_state;
/*
* VCPU interrupts
@@ -199,8 +229,9 @@ struct kvm_vcpu_arch {
* in irqs_pending. Our approach is modeled around multiple producer
* and single consumer problem where the consumer is the VCPU itself.
*/
- unsigned long irqs_pending;
- unsigned long irqs_pending_mask;
+#define KVM_RISCV_VCPU_NR_IRQS 64
+ DECLARE_BITMAP(irqs_pending, KVM_RISCV_VCPU_NR_IRQS);
+ DECLARE_BITMAP(irqs_pending_mask, KVM_RISCV_VCPU_NR_IRQS);
/* VCPU Timer */
struct kvm_vcpu_timer timer;
@@ -220,92 +251,49 @@ struct kvm_vcpu_arch {
/* SBI context */
struct kvm_vcpu_sbi_context sbi_context;
+ /* AIA VCPU context */
+ struct kvm_vcpu_aia aia_context;
+
/* Cache pages needed to program page tables with spinlock held */
struct kvm_mmu_memory_cache mmu_page_cache;
- /* VCPU power-off state */
- bool power_off;
+ /* VCPU power state */
+ struct kvm_mp_state mp_state;
+ spinlock_t mp_state_lock;
/* Don't run the VCPU (blocked) */
bool pause;
+
+ /* Performance monitoring context */
+ struct kvm_pmu pmu_context;
+
+ /* Firmware feature SBI extension context */
+ struct kvm_sbi_fwft fwft_context;
+
+ /* 'static' configurations which are set only once */
+ struct kvm_vcpu_config cfg;
+
+ /* SBI steal-time accounting */
+ struct {
+ gpa_t shmem;
+ u64 last_steal;
+ } sta;
};
-static inline void kvm_arch_hardware_unsetup(void) {}
-static inline void kvm_arch_sync_events(struct kvm *kvm) {}
-static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
-
-#define KVM_ARCH_WANT_MMU_NOTIFIER
-
-#define KVM_RISCV_GSTAGE_TLB_MIN_ORDER 12
-
-void kvm_riscv_local_hfence_gvma_vmid_gpa(unsigned long vmid,
- gpa_t gpa, gpa_t gpsz,
- unsigned long order);
-void kvm_riscv_local_hfence_gvma_vmid_all(unsigned long vmid);
-void kvm_riscv_local_hfence_gvma_gpa(gpa_t gpa, gpa_t gpsz,
- unsigned long order);
-void kvm_riscv_local_hfence_gvma_all(void);
-void kvm_riscv_local_hfence_vvma_asid_gva(unsigned long vmid,
- unsigned long asid,
- unsigned long gva,
- unsigned long gvsz,
- unsigned long order);
-void kvm_riscv_local_hfence_vvma_asid_all(unsigned long vmid,
- unsigned long asid);
-void kvm_riscv_local_hfence_vvma_gva(unsigned long vmid,
- unsigned long gva, unsigned long gvsz,
- unsigned long order);
-void kvm_riscv_local_hfence_vvma_all(unsigned long vmid);
-
-void kvm_riscv_local_tlb_sanitize(struct kvm_vcpu *vcpu);
-
-void kvm_riscv_fence_i_process(struct kvm_vcpu *vcpu);
-void kvm_riscv_hfence_gvma_vmid_all_process(struct kvm_vcpu *vcpu);
-void kvm_riscv_hfence_vvma_all_process(struct kvm_vcpu *vcpu);
-void kvm_riscv_hfence_process(struct kvm_vcpu *vcpu);
-
-void kvm_riscv_fence_i(struct kvm *kvm,
- unsigned long hbase, unsigned long hmask);
-void kvm_riscv_hfence_gvma_vmid_gpa(struct kvm *kvm,
- unsigned long hbase, unsigned long hmask,
- gpa_t gpa, gpa_t gpsz,
- unsigned long order);
-void kvm_riscv_hfence_gvma_vmid_all(struct kvm *kvm,
- unsigned long hbase, unsigned long hmask);
-void kvm_riscv_hfence_vvma_asid_gva(struct kvm *kvm,
- unsigned long hbase, unsigned long hmask,
- unsigned long gva, unsigned long gvsz,
- unsigned long order, unsigned long asid);
-void kvm_riscv_hfence_vvma_asid_all(struct kvm *kvm,
- unsigned long hbase, unsigned long hmask,
- unsigned long asid);
-void kvm_riscv_hfence_vvma_gva(struct kvm *kvm,
- unsigned long hbase, unsigned long hmask,
- unsigned long gva, unsigned long gvsz,
- unsigned long order);
-void kvm_riscv_hfence_vvma_all(struct kvm *kvm,
- unsigned long hbase, unsigned long hmask);
-
-int kvm_riscv_gstage_ioremap(struct kvm *kvm, gpa_t gpa,
- phys_addr_t hpa, unsigned long size,
- bool writable, bool in_atomic);
-void kvm_riscv_gstage_iounmap(struct kvm *kvm, gpa_t gpa,
- unsigned long size);
-int kvm_riscv_gstage_map(struct kvm_vcpu *vcpu,
- struct kvm_memory_slot *memslot,
- gpa_t gpa, unsigned long hva, bool is_write);
-int kvm_riscv_gstage_alloc_pgd(struct kvm *kvm);
-void kvm_riscv_gstage_free_pgd(struct kvm *kvm);
-void kvm_riscv_gstage_update_hgatp(struct kvm_vcpu *vcpu);
-void kvm_riscv_gstage_mode_detect(void);
-unsigned long kvm_riscv_gstage_mode(void);
-int kvm_riscv_gstage_gpa_bits(void);
-
-void kvm_riscv_gstage_vmid_detect(void);
-unsigned long kvm_riscv_gstage_vmid_bits(void);
-int kvm_riscv_gstage_vmid_init(struct kvm *kvm);
-bool kvm_riscv_gstage_vmid_ver_changed(struct kvm_vmid *vmid);
-void kvm_riscv_gstage_vmid_update(struct kvm_vcpu *vcpu);
+/*
+ * Returns true if a Performance Monitoring Interrupt (PMI), a.k.a. perf event,
+ * arrived in guest context. For riscv, any event that arrives while a vCPU is
+ * loaded is considered to be "in guest".
+ */
+static inline bool kvm_arch_pmi_in_guest(struct kvm_vcpu *vcpu)
+{
+ return IS_ENABLED(CONFIG_GUEST_PERF_EVENTS) && !!vcpu;
+}
+
+static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
+static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
+
+int kvm_riscv_setup_default_irq_routing(struct kvm *kvm, u32 lines);
void __kvm_riscv_unpriv_trap(void);
@@ -320,12 +308,29 @@ int kvm_riscv_vcpu_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,
void __kvm_riscv_switch_to(struct kvm_vcpu_arch *vcpu_arch);
+void kvm_riscv_vcpu_setup_isa(struct kvm_vcpu *vcpu);
+unsigned long kvm_riscv_vcpu_num_regs(struct kvm_vcpu *vcpu);
+int kvm_riscv_vcpu_copy_reg_indices(struct kvm_vcpu *vcpu,
+ u64 __user *uindices);
+int kvm_riscv_vcpu_get_reg(struct kvm_vcpu *vcpu,
+ const struct kvm_one_reg *reg);
+int kvm_riscv_vcpu_set_reg(struct kvm_vcpu *vcpu,
+ const struct kvm_one_reg *reg);
+
int kvm_riscv_vcpu_set_interrupt(struct kvm_vcpu *vcpu, unsigned int irq);
int kvm_riscv_vcpu_unset_interrupt(struct kvm_vcpu *vcpu, unsigned int irq);
void kvm_riscv_vcpu_flush_interrupts(struct kvm_vcpu *vcpu);
void kvm_riscv_vcpu_sync_interrupts(struct kvm_vcpu *vcpu);
-bool kvm_riscv_vcpu_has_interrupts(struct kvm_vcpu *vcpu, unsigned long mask);
+bool kvm_riscv_vcpu_has_interrupts(struct kvm_vcpu *vcpu, u64 mask);
+void __kvm_riscv_vcpu_power_off(struct kvm_vcpu *vcpu);
void kvm_riscv_vcpu_power_off(struct kvm_vcpu *vcpu);
+void __kvm_riscv_vcpu_power_on(struct kvm_vcpu *vcpu);
void kvm_riscv_vcpu_power_on(struct kvm_vcpu *vcpu);
+bool kvm_riscv_vcpu_stopped(struct kvm_vcpu *vcpu);
+
+void kvm_riscv_vcpu_record_steal_time(struct kvm_vcpu *vcpu);
+
+/* Flags representing implementation specific details */
+DECLARE_STATIC_KEY_FALSE(kvm_riscv_vsstage_tlb_no_gpa);
#endif /* __RISCV_KVM_HOST_H__ */
generated by cgit (git 2.34.1) at 2025-12-25 13:22:18 +0000