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-rw-r--r--arch/powerpc/include/asm/kvm_host.h355
1 files changed, 300 insertions, 55 deletions
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index bf8af5d5d5d..bb66d8b8efd 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -32,31 +32,48 @@
#include <linux/atomic.h>
#include <asm/kvm_asm.h>
#include <asm/processor.h>
+#include <asm/page.h>
+#include <asm/cacheflush.h>
#define KVM_MAX_VCPUS NR_CPUS
#define KVM_MAX_VCORES NR_CPUS
-#define KVM_MEMORY_SLOTS 32
-/* memory slots that does not exposed to userspace */
-#define KVM_PRIVATE_MEM_SLOTS 4
+#define KVM_USER_MEM_SLOTS 32
+#define KVM_MEM_SLOTS_NUM KVM_USER_MEM_SLOTS
#ifdef CONFIG_KVM_MMIO
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
#endif
-/* We don't currently support large pages. */
-#define KVM_HPAGE_GFN_SHIFT(x) 0
-#define KVM_NR_PAGE_SIZES 1
-#define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
+/* These values are internal and can be increased later */
+#define KVM_NR_IRQCHIPS 1
+#define KVM_IRQCHIP_NUM_PINS 256
+
+#if !defined(CONFIG_KVM_440)
+#include <linux/mmu_notifier.h>
+
+#define KVM_ARCH_WANT_MMU_NOTIFIER
+
+struct kvm;
+extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
+extern int kvm_unmap_hva_range(struct kvm *kvm,
+ unsigned long start, unsigned long end);
+extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
+extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
+extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
+
+#endif
#define HPTEG_CACHE_NUM (1 << 15)
#define HPTEG_HASH_BITS_PTE 13
#define HPTEG_HASH_BITS_PTE_LONG 12
#define HPTEG_HASH_BITS_VPTE 13
#define HPTEG_HASH_BITS_VPTE_LONG 5
+#define HPTEG_HASH_BITS_VPTE_64K 11
#define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE)
#define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG)
#define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE)
#define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG)
+#define HPTEG_HASH_NUM_VPTE_64K (1 << HPTEG_HASH_BITS_VPTE_64K)
/* Physical Address Mask - allowed range of real mode RAM access */
#define KVM_PAM 0x0fffffffffffffffULL
@@ -67,7 +84,10 @@ struct kvm_vcpu;
struct lppaca;
struct slb_shadow;
-struct dtl;
+struct dtl_entry;
+
+struct kvmppc_vcpu_book3s;
+struct kvmppc_book3s_shadow_vcpu;
struct kvm_vm_stat {
u32 remote_tlb_flush;
@@ -91,6 +111,8 @@ struct kvm_vcpu_stat {
u32 dec_exits;
u32 ext_intr_exits;
u32 halt_wakeup;
+ u32 dbell_exits;
+ u32 gdbell_exits;
#ifdef CONFIG_PPC_BOOK3S
u32 pf_storage;
u32 pf_instruc;
@@ -125,6 +147,7 @@ enum kvm_exit_types {
EMULATED_TLBSX_EXITS,
EMULATED_TLBWE_EXITS,
EMULATED_RFI_EXITS,
+ EMULATED_RFCI_EXITS,
DEC_EXITS,
EXT_INTR_EXITS,
HALT_WAKEUP,
@@ -132,6 +155,8 @@ enum kvm_exit_types {
FP_UNAVAIL,
DEBUG_EXITS,
TIMEINGUEST,
+ DBELL_EXITS,
+ GDBELL_EXITS,
__NUMBER_OF_KVM_EXIT_TYPES
};
@@ -158,35 +183,94 @@ struct kvmppc_spapr_tce_table {
struct page *pages[0];
};
-struct kvmppc_rma_info {
- void *base_virt;
- unsigned long base_pfn;
- unsigned long npages;
- struct list_head list;
- atomic_t use_count;
+struct kvm_rma_info {
+ atomic_t use_count;
+ unsigned long base_pfn;
+};
+
+/* XICS components, defined in book3s_xics.c */
+struct kvmppc_xics;
+struct kvmppc_icp;
+
+/*
+ * The reverse mapping array has one entry for each HPTE,
+ * which stores the guest's view of the second word of the HPTE
+ * (including the guest physical address of the mapping),
+ * plus forward and backward pointers in a doubly-linked ring
+ * of HPTEs that map the same host page. The pointers in this
+ * ring are 32-bit HPTE indexes, to save space.
+ */
+struct revmap_entry {
+ unsigned long guest_rpte;
+ unsigned int forw, back;
+};
+
+/*
+ * We use the top bit of each memslot->arch.rmap entry as a lock bit,
+ * and bit 32 as a present flag. The bottom 32 bits are the
+ * index in the guest HPT of a HPTE that points to the page.
+ */
+#define KVMPPC_RMAP_LOCK_BIT 63
+#define KVMPPC_RMAP_RC_SHIFT 32
+#define KVMPPC_RMAP_REFERENCED (HPTE_R_R << KVMPPC_RMAP_RC_SHIFT)
+#define KVMPPC_RMAP_CHANGED (HPTE_R_C << KVMPPC_RMAP_RC_SHIFT)
+#define KVMPPC_RMAP_PRESENT 0x100000000ul
+#define KVMPPC_RMAP_INDEX 0xfffffffful
+
+/* Low-order bits in memslot->arch.slot_phys[] */
+#define KVMPPC_PAGE_ORDER_MASK 0x1f
+#define KVMPPC_PAGE_NO_CACHE HPTE_R_I /* 0x20 */
+#define KVMPPC_PAGE_WRITETHRU HPTE_R_W /* 0x40 */
+#define KVMPPC_GOT_PAGE 0x80
+
+struct kvm_arch_memory_slot {
+#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
+ unsigned long *rmap;
+ unsigned long *slot_phys;
+#endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
};
struct kvm_arch {
-#ifdef CONFIG_KVM_BOOK3S_64_HV
- unsigned long hpt_virt;
- unsigned long ram_npages;
- unsigned long ram_psize;
- unsigned long ram_porder;
- struct kvmppc_pginfo *ram_pginfo;
unsigned int lpid;
+#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
+ unsigned long hpt_virt;
+ struct revmap_entry *revmap;
unsigned int host_lpid;
unsigned long host_lpcr;
unsigned long sdr1;
unsigned long host_sdr1;
int tlbie_lock;
- int n_rma_pages;
unsigned long lpcr;
unsigned long rmor;
- struct kvmppc_rma_info *rma;
- struct list_head spapr_tce_tables;
- unsigned short last_vcpu[NR_CPUS];
+ struct kvm_rma_info *rma;
+ unsigned long vrma_slb_v;
+ int rma_setup_done;
+ int using_mmu_notifiers;
+ u32 hpt_order;
+ atomic_t vcpus_running;
+ u32 online_vcores;
+ unsigned long hpt_npte;
+ unsigned long hpt_mask;
+ atomic_t hpte_mod_interest;
+ spinlock_t slot_phys_lock;
+ cpumask_t need_tlb_flush;
struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
-#endif /* CONFIG_KVM_BOOK3S_64_HV */
+ int hpt_cma_alloc;
+#endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
+#ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
+ struct mutex hpt_mutex;
+#endif
+#ifdef CONFIG_PPC_BOOK3S_64
+ struct list_head spapr_tce_tables;
+ struct list_head rtas_tokens;
+#endif
+#ifdef CONFIG_KVM_MPIC
+ struct openpic *mpic;
+#endif
+#ifdef CONFIG_KVM_XICS
+ struct kvmppc_xics *xics;
+#endif
+ struct kvmppc_ops *kvm_ops;
};
/*
@@ -204,12 +288,23 @@ struct kvmppc_vcore {
int n_woken;
int nap_count;
int napping_threads;
+ int first_vcpuid;
u16 pcpu;
+ u16 last_cpu;
u8 vcore_state;
u8 in_guest;
struct list_head runnable_threads;
spinlock_t lock;
wait_queue_head_t wq;
+ u64 stolen_tb;
+ u64 preempt_tb;
+ struct kvm_vcpu *runner;
+ struct kvm *kvm;
+ u64 tb_offset; /* guest timebase - host timebase */
+ ulong lpcr;
+ u32 arch_compat;
+ ulong pcr;
+ ulong dpdes; /* doorbell state (POWER8) */
};
#define VCORE_ENTRY_COUNT(vc) ((vc)->entry_exit_count & 0xff)
@@ -217,9 +312,25 @@ struct kvmppc_vcore {
/* Values for vcore_state */
#define VCORE_INACTIVE 0
-#define VCORE_RUNNING 1
-#define VCORE_EXITING 2
-#define VCORE_SLEEPING 3
+#define VCORE_SLEEPING 1
+#define VCORE_STARTING 2
+#define VCORE_RUNNING 3
+#define VCORE_EXITING 4
+
+/*
+ * Struct used to manage memory for a virtual processor area
+ * registered by a PAPR guest. There are three types of area
+ * that a guest can register.
+ */
+struct kvmppc_vpa {
+ unsigned long gpa; /* Current guest phys addr */
+ void *pinned_addr; /* Address in kernel linear mapping */
+ void *pinned_end; /* End of region */
+ unsigned long next_gpa; /* Guest phys addr for update */
+ unsigned long len; /* Number of bytes required */
+ u8 update_pending; /* 1 => update pinned_addr from next_gpa */
+ bool dirty; /* true => area has been modified by kernel */
+};
struct kvmppc_pte {
ulong eaddr;
@@ -228,6 +339,7 @@ struct kvmppc_pte {
bool may_read : 1;
bool may_write : 1;
bool may_execute : 1;
+ u8 page_size; /* MMU_PAGE_xxx */
};
struct kvmppc_mmu {
@@ -240,7 +352,8 @@ struct kvmppc_mmu {
/* book3s */
void (*mtsrin)(struct kvm_vcpu *vcpu, u32 srnum, ulong value);
u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
- int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *pte, bool data);
+ int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr,
+ struct kvmppc_pte *pte, bool data, bool iswrite);
void (*reset_msr)(struct kvm_vcpu *vcpu);
void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
@@ -260,8 +373,30 @@ struct kvmppc_slb {
bool large : 1; /* PTEs are 16MB */
bool tb : 1; /* 1TB segment */
bool class : 1;
+ u8 base_page_size; /* MMU_PAGE_xxx */
};
+# ifdef CONFIG_PPC_FSL_BOOK3E
+#define KVMPPC_BOOKE_IAC_NUM 2
+#define KVMPPC_BOOKE_DAC_NUM 2
+# else
+#define KVMPPC_BOOKE_IAC_NUM 4
+#define KVMPPC_BOOKE_DAC_NUM 2
+# endif
+#define KVMPPC_BOOKE_MAX_IAC 4
+#define KVMPPC_BOOKE_MAX_DAC 2
+
+/* KVMPPC_EPR_USER takes precedence over KVMPPC_EPR_KERNEL */
+#define KVMPPC_EPR_NONE 0 /* EPR not supported */
+#define KVMPPC_EPR_USER 1 /* exit to userspace to fill EPR */
+#define KVMPPC_EPR_KERNEL 2 /* in-kernel irqchip */
+
+#define KVMPPC_IRQ_DEFAULT 0
+#define KVMPPC_IRQ_MPIC 1
+#define KVMPPC_IRQ_XICS 2
+
+struct openpic;
+
struct kvm_vcpu_arch {
ulong host_stack;
u32 host_pid;
@@ -270,12 +405,15 @@ struct kvm_vcpu_arch {
int slb_max; /* 1 + index of last valid entry in slb[] */
int slb_nr; /* total number of entries in SLB */
struct kvmppc_mmu mmu;
+ struct kvmppc_vcpu_book3s *book3s;
+#endif
+#ifdef CONFIG_PPC_BOOK3S_32
+ struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
#endif
ulong gpr[32];
- u64 fpr[32];
- u64 fpscr;
+ struct thread_fp_state fp;
#ifdef CONFIG_SPE
ulong evr[32];
@@ -284,12 +422,23 @@ struct kvm_vcpu_arch {
u64 acc;
#endif
#ifdef CONFIG_ALTIVEC
- vector128 vr[32];
- vector128 vscr;
+ struct thread_vr_state vr;
+#endif
+
+#ifdef CONFIG_KVM_BOOKE_HV
+ u32 host_mas4;
+ u32 host_mas6;
+ u32 shadow_epcr;
+ u32 shadow_msrp;
+ u32 eplc;
+ u32 epsc;
+ u32 oldpir;
#endif
-#ifdef CONFIG_VSX
- u64 vsr[64];
+#if defined(CONFIG_BOOKE)
+#if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
+ u32 epcr;
+#endif
#endif
#ifdef CONFIG_PPC_BOOK3S
@@ -300,6 +449,9 @@ struct kvm_vcpu_arch {
ulong pc;
ulong ctr;
ulong lr;
+#ifdef CONFIG_PPC_BOOK3S
+ ulong tar;
+#endif
ulong xer;
u32 cr;
@@ -309,19 +461,37 @@ struct kvm_vcpu_arch {
ulong guest_owned_ext;
ulong purr;
ulong spurr;
+ ulong ic;
+ ulong vtb;
ulong dscr;
ulong amr;
ulong uamor;
+ ulong iamr;
u32 ctrl;
+ u32 dabrx;
ulong dabr;
+ ulong dawr;
+ ulong dawrx;
+ ulong ciabr;
+ ulong cfar;
+ ulong ppr;
+ ulong pspb;
+ ulong fscr;
+ ulong shadow_fscr;
+ ulong ebbhr;
+ ulong ebbrr;
+ ulong bescr;
+ ulong csigr;
+ ulong tacr;
+ ulong tcscr;
+ ulong acop;
+ ulong wort;
+ ulong shadow_srr1;
#endif
u32 vrsave; /* also USPRG0 */
u32 mmucr;
+ /* shadow_msr is unused for BookE HV */
ulong shadow_msr;
- ulong sprg4;
- ulong sprg5;
- ulong sprg6;
- ulong sprg7;
ulong csrr0;
ulong csrr1;
ulong dsrr0;
@@ -329,16 +499,16 @@ struct kvm_vcpu_arch {
ulong mcsrr0;
ulong mcsrr1;
ulong mcsr;
- ulong esr;
u32 dec;
+#ifdef CONFIG_BOOKE
u32 decar;
+#endif
u32 tbl;
u32 tbu;
u32 tcr;
- u32 tsr;
+ ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
u32 ivor[64];
ulong ivpr;
- u32 pir;
u32 pvr;
u32 shadow_pid;
@@ -348,12 +518,35 @@ struct kvm_vcpu_arch {
u32 ccr0;
u32 ccr1;
- u32 dbcr0;
- u32 dbcr1;
u32 dbsr;
- u64 mmcr[3];
+ u64 mmcr[5];
u32 pmc[8];
+ u32 spmc[2];
+ u64 siar;
+ u64 sdar;
+ u64 sier;
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ u64 tfhar;
+ u64 texasr;
+ u64 tfiar;
+
+ u32 cr_tm;
+ u64 lr_tm;
+ u64 ctr_tm;
+ u64 amr_tm;
+ u64 ppr_tm;
+ u64 dscr_tm;
+ u64 tar_tm;
+
+ ulong gpr_tm[32];
+
+ struct thread_fp_state fp_tm;
+
+ struct thread_vr_state vr_tm;
+ u32 vrsave_tm; /* also USPRG0 */
+
+#endif
#ifdef CONFIG_KVM_EXIT_TIMING
struct mutex exit_timing_lock;
@@ -372,6 +565,7 @@ struct kvm_vcpu_arch {
#ifdef CONFIG_PPC_BOOK3S
ulong fault_dar;
u32 fault_dsisr;
+ unsigned long intr_msr;
#endif
#ifdef CONFIG_BOOKE
@@ -379,8 +573,22 @@ struct kvm_vcpu_arch {
ulong fault_esr;
ulong queued_dear;
ulong queued_esr;
+ spinlock_t wdt_lock;
+ struct timer_list wdt_timer;
+ u32 tlbcfg[4];
+ u32 tlbps[4];
+ u32 mmucfg;
+ u32 eptcfg;
+ u32 epr;
+ u32 crit_save;
+ /* guest debug registers*/
+ struct debug_reg dbg_reg;
+ /* hardware visible debug registers when in guest state */
+ struct debug_reg shadow_dbg_reg;
#endif
gpa_t paddr_accessed;
+ gva_t vaddr_accessed;
+ pgd_t *pgdir;
u8 io_gpr; /* GPR used as IO source/target */
u8 mmio_is_bigendian;
@@ -390,9 +598,12 @@ struct kvm_vcpu_arch {
u8 osi_needed;
u8 osi_enabled;
u8 papr_enabled;
+ u8 watchdog_enabled;
u8 sane;
u8 cpu_type;
u8 hcall_needed;
+ u8 epr_flags; /* KVMPPC_EPR_xxx */
+ u8 epr_needed;
u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
@@ -401,16 +612,10 @@ struct kvm_vcpu_arch {
u64 dec_jiffies;
u64 dec_expires;
unsigned long pending_exceptions;
- u16 last_cpu;
u8 ceded;
u8 prodded;
u32 last_inst;
- struct lppaca *vpa;
- struct slb_shadow *slb_shadow;
- struct dtl *dtl;
- struct dtl *dtl_end;
-
wait_queue_head_t *wqp;
struct kvmppc_vcore *vcore;
int ret;
@@ -421,21 +626,61 @@ struct kvm_vcpu_arch {
wait_queue_head_t cpu_run;
struct kvm_vcpu_arch_shared *shared;
+#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
+ bool shared_big_endian;
+#endif
unsigned long magic_page_pa; /* phys addr to map the magic page to */
unsigned long magic_page_ea; /* effect. addr to map the magic page to */
+ bool disable_kernel_nx;
+
+ int irq_type; /* one of KVM_IRQ_* */
+ int irq_cpu_id;
+ struct openpic *mpic; /* KVM_IRQ_MPIC */
+#ifdef CONFIG_KVM_XICS
+ struct kvmppc_icp *icp; /* XICS presentation controller */
+#endif
-#ifdef CONFIG_KVM_BOOK3S_64_HV
+#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
struct kvm_vcpu_arch_shared shregs;
+ unsigned long pgfault_addr;
+ long pgfault_index;
+ unsigned long pgfault_hpte[2];
+
struct list_head run_list;
struct task_struct *run_task;
struct kvm_run *kvm_run;
+
+ spinlock_t vpa_update_lock;
+ struct kvmppc_vpa vpa;
+ struct kvmppc_vpa dtl;
+ struct dtl_entry *dtl_ptr;
+ unsigned long dtl_index;
+ u64 stolen_logged;
+ struct kvmppc_vpa slb_shadow;
+
+ spinlock_t tbacct_lock;
+ u64 busy_stolen;
+ u64 busy_preempt;
#endif
};
+#define VCPU_FPR(vcpu, i) (vcpu)->arch.fp.fpr[i][TS_FPROFFSET]
+
/* Values for vcpu->arch.state */
-#define KVMPPC_VCPU_STOPPED 0
-#define KVMPPC_VCPU_BUSY_IN_HOST 1
-#define KVMPPC_VCPU_RUNNABLE 2
+#define KVMPPC_VCPU_NOTREADY 0
+#define KVMPPC_VCPU_RUNNABLE 1
+#define KVMPPC_VCPU_BUSY_IN_HOST 2
+
+/* Values for vcpu->arch.io_gpr */
+#define KVM_MMIO_REG_MASK 0x001f
+#define KVM_MMIO_REG_EXT_MASK 0xffe0
+#define KVM_MMIO_REG_GPR 0x0000
+#define KVM_MMIO_REG_FPR 0x0020
+#define KVM_MMIO_REG_QPR 0x0040
+#define KVM_MMIO_REG_FQPR 0x0060
+
+#define __KVM_HAVE_ARCH_WQP
+#define __KVM_HAVE_CREATE_DEVICE
#endif /* __POWERPC_KVM_HOST_H__ */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 08:20:05 +0000