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linux_dsm_epyc7002/arch/powerpc/include/asm/kvm_host.h
Suraj Jitindar Singh fd10be2573 KVM: PPC: Book3S HV: Handle page fault for a nested guest 
Consider a normal (L1) guest running under the main hypervisor (L0),
and then a nested guest (L2) running under the L1 guest which is acting
as a nested hypervisor. L0 has page tables to map the address space for
L1 providing the translation from L1 real address -> L0 real address;

	L1
	|
	| (L1 -> L0)
	|
	----> L0

There are also page tables in L1 used to map the address space for L2
providing the translation from L2 real address -> L1 read address. Since
the hardware can only walk a single level of page table, we need to
maintain in L0 a "shadow_pgtable" for L2 which provides the translation
from L2 real address -> L0 real address. Which looks like;

	L2				L2
	|				|
	| (L2 -> L1)			|
	|				|
	----> L1			| (L2 -> L0)
	      |				|
	      | (L1 -> L0)		|
	      |				|
	      ----> L0			--------> L0

When a page fault occurs while running a nested (L2) guest we need to
insert a pte into this "shadow_pgtable" for the L2 -> L0 mapping. To
do this we need to:

1. Walk the pgtable in L1 memory to find the L2 -> L1 mapping, and
   provide a page fault to L1 if this mapping doesn't exist.
2. Use our L1 -> L0 pgtable to convert this L1 address to an L0 address,
   or try to insert a pte for that mapping if it doesn't exist.
3. Now we have a L2 -> L0 mapping, insert this into our shadow_pgtable

Once this mapping exists we can take rc faults when hardware is unable
to automatically set the reference and change bits in the pte. On these
we need to:

1. Check the rc bits on the L2 -> L1 pte match, and otherwise reflect
   the fault down to L1.
2. Set the rc bits in the L1 -> L0 pte which corresponds to the same
   host page.
3. Set the rc bits in the L2 -> L0 pte.

As we reuse a large number of functions in book3s_64_mmu_radix.c for
this we also needed to refactor a number of these functions to take
an lpid parameter so that the correct lpid is used for tlb invalidations.
The functionality however has remained the same.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-10-09 16:04:27 +11:00

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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright IBM Corp. 2007
*
* Authors: Hollis Blanchard <hollisb@us.ibm.com>
*/
#ifndef __POWERPC_KVM_HOST_H__
#define __POWERPC_KVM_HOST_H__
#include <linux/mutex.h>
#include <linux/hrtimer.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/kvm_types.h>
#include <linux/threads.h>
#include <linux/spinlock.h>
#include <linux/kvm_para.h>
#include <linux/list.h>
#include <linux/atomic.h>
#include <asm/kvm_asm.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/cacheflush.h>
#include <asm/hvcall.h>
#include <asm/mce.h>
#define KVM_MAX_VCPUS NR_CPUS
#define KVM_MAX_VCORES NR_CPUS
#define KVM_USER_MEM_SLOTS 512
#include <asm/cputhreads.h>
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
#include <asm/kvm_book3s_asm.h> /* for MAX_SMT_THREADS */
#define KVM_MAX_VCPU_ID (MAX_SMT_THREADS * KVM_MAX_VCORES)
#define KVM_MAX_NESTED_GUESTS KVMPPC_NR_LPIDS
#else
#define KVM_MAX_VCPU_ID KVM_MAX_VCPUS
#endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
#define __KVM_HAVE_ARCH_INTC_INITIALIZED
#define KVM_HALT_POLL_NS_DEFAULT 10000 /* 10 us */
/* These values are internal and can be increased later */
#define KVM_NR_IRQCHIPS 1
#define KVM_IRQCHIP_NUM_PINS 256
/* PPC-specific vcpu->requests bit members */
#define KVM_REQ_WATCHDOG KVM_ARCH_REQ(0)
#define KVM_REQ_EPR_EXIT KVM_ARCH_REQ(1)
#include <linux/mmu_notifier.h>
#define KVM_ARCH_WANT_MMU_NOTIFIER
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 start, unsigned long end);
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);
#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
struct lppaca;
struct slb_shadow;
struct dtl_entry;
struct kvmppc_vcpu_book3s;
struct kvmppc_book3s_shadow_vcpu;
struct kvm_nested_guest;
struct kvm_vm_stat {
ulong remote_tlb_flush;
};
struct kvm_vcpu_stat {
u64 sum_exits;
u64 mmio_exits;
u64 signal_exits;
u64 light_exits;
/* Account for special types of light exits: */
u64 itlb_real_miss_exits;
u64 itlb_virt_miss_exits;
u64 dtlb_real_miss_exits;
u64 dtlb_virt_miss_exits;
u64 syscall_exits;
u64 isi_exits;
u64 dsi_exits;
u64 emulated_inst_exits;
u64 dec_exits;
u64 ext_intr_exits;
u64 halt_poll_success_ns;
u64 halt_poll_fail_ns;
u64 halt_wait_ns;
u64 halt_successful_poll;
u64 halt_attempted_poll;
u64 halt_successful_wait;
u64 halt_poll_invalid;
u64 halt_wakeup;
u64 dbell_exits;
u64 gdbell_exits;
u64 ld;
u64 st;
#ifdef CONFIG_PPC_BOOK3S
u64 pf_storage;
u64 pf_instruc;
u64 sp_storage;
u64 sp_instruc;
u64 queue_intr;
u64 ld_slow;
u64 st_slow;
#endif
u64 pthru_all;
u64 pthru_host;
u64 pthru_bad_aff;
};
enum kvm_exit_types {
MMIO_EXITS,
SIGNAL_EXITS,
ITLB_REAL_MISS_EXITS,
ITLB_VIRT_MISS_EXITS,
DTLB_REAL_MISS_EXITS,
DTLB_VIRT_MISS_EXITS,
SYSCALL_EXITS,
ISI_EXITS,
DSI_EXITS,
EMULATED_INST_EXITS,
EMULATED_MTMSRWE_EXITS,
EMULATED_WRTEE_EXITS,
EMULATED_MTSPR_EXITS,
EMULATED_MFSPR_EXITS,
EMULATED_MTMSR_EXITS,
EMULATED_MFMSR_EXITS,
EMULATED_TLBSX_EXITS,
EMULATED_TLBWE_EXITS,
EMULATED_RFI_EXITS,
EMULATED_RFCI_EXITS,
EMULATED_RFDI_EXITS,
DEC_EXITS,
EXT_INTR_EXITS,
HALT_WAKEUP,
USR_PR_INST,
FP_UNAVAIL,
DEBUG_EXITS,
TIMEINGUEST,
DBELL_EXITS,
GDBELL_EXITS,
__NUMBER_OF_KVM_EXIT_TYPES
};
/* allow access to big endian 32bit upper/lower parts and 64bit var */
struct kvmppc_exit_timing {
union {
u64 tv64;
struct {
u32 tbu, tbl;
} tv32;
};
};
struct kvmppc_pginfo {
unsigned long pfn;
atomic_t refcnt;
};
struct kvmppc_spapr_tce_iommu_table {
struct rcu_head rcu;
struct list_head next;
struct iommu_table *tbl;
struct kref kref;
};
struct kvmppc_spapr_tce_table {
struct list_head list;
struct kvm *kvm;
u64 liobn;
struct rcu_head rcu;
u32 page_shift;
u64 offset; /* in pages */
u64 size; /* window size in pages */
struct list_head iommu_tables;
struct page *pages[0];
};
/* XICS components, defined in book3s_xics.c */
struct kvmppc_xics;
struct kvmppc_icp;
extern struct kvm_device_ops kvm_xics_ops;
/* XIVE components, defined in book3s_xive.c */
struct kvmppc_xive;
struct kvmppc_xive_vcpu;
extern struct kvm_device_ops kvm_xive_ops;
struct kvmppc_passthru_irqmap;
/*
* 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_PRESENT 0x100000000ul
#define KVMPPC_RMAP_INDEX 0xfffffffful
struct kvm_arch_memory_slot {
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
unsigned long *rmap;
#endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
};
struct kvm_hpt_info {
/* Host virtual (linear mapping) address of guest HPT */
unsigned long virt;
/* Array of reverse mapping entries for each guest HPTE */
struct revmap_entry *rev;
/* Guest HPT size is 2**(order) bytes */
u32 order;
/* 1 if HPT allocated with CMA, 0 otherwise */
int cma;
};
struct kvm_resize_hpt;
struct kvm_arch {
unsigned int lpid;
unsigned int smt_mode; /* # vcpus per virtual core */
unsigned int emul_smt_mode; /* emualted SMT mode, on P9 */
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
unsigned int tlb_sets;
struct kvm_hpt_info hpt;
atomic64_t mmio_update;
unsigned int host_lpid;
unsigned long host_lpcr;
unsigned long sdr1;
unsigned long host_sdr1;
unsigned long lpcr;
unsigned long vrma_slb_v;
int mmu_ready;
atomic_t vcpus_running;
u32 online_vcores;
atomic_t hpte_mod_interest;
cpumask_t need_tlb_flush;
cpumask_t cpu_in_guest;
u8 radix;
u8 fwnmi_enabled;
bool threads_indep;
bool nested_enable;
pgd_t *pgtable;
u64 process_table;
struct dentry *debugfs_dir;
struct dentry *htab_dentry;
struct dentry *radix_dentry;
struct kvm_resize_hpt *resize_hpt; /* protected by kvm->lock */
#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;
DECLARE_BITMAP(enabled_hcalls, MAX_HCALL_OPCODE/4 + 1);
#endif
#ifdef CONFIG_KVM_MPIC
struct openpic *mpic;
#endif
#ifdef CONFIG_KVM_XICS
struct kvmppc_xics *xics;
struct kvmppc_xive *xive;
struct kvmppc_passthru_irqmap *pimap;
#endif
struct kvmppc_ops *kvm_ops;
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
u64 l1_ptcr;
int max_nested_lpid;
struct kvm_nested_guest *nested_guests[KVM_MAX_NESTED_GUESTS];
/* This array can grow quite large, keep it at the end */
struct kvmppc_vcore *vcores[KVM_MAX_VCORES];
#endif
};
#define VCORE_ENTRY_MAP(vc) ((vc)->entry_exit_map & 0xff)
#define VCORE_EXIT_MAP(vc) ((vc)->entry_exit_map >> 8)
#define VCORE_IS_EXITING(vc) (VCORE_EXIT_MAP(vc) != 0)
/* This bit is used when a vcore exit is triggered from outside the vcore */
#define VCORE_EXIT_REQ 0x10000
/*
* Values for vcore_state.
* Note that these are arranged such that lower values
* (< VCORE_SLEEPING) don't require stolen time accounting
* on load/unload, and higher values do.
*/
#define VCORE_INACTIVE 0
#define VCORE_PREEMPT 1
#define VCORE_PIGGYBACK 2
#define VCORE_SLEEPING 3
#define VCORE_RUNNING 4
#define VCORE_EXITING 5
#define VCORE_POLLING 6
/*
* 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;
u64 vpage;
ulong raddr;
bool may_read : 1;
bool may_write : 1;
bool may_execute : 1;
unsigned long wimg;
unsigned long rc;
u8 page_size; /* MMU_PAGE_xxx */
u8 page_shift;
};
struct kvmppc_mmu {
/* book3s_64 only */
void (*slbmte)(struct kvm_vcpu *vcpu, u64 rb, u64 rs);
u64 (*slbmfee)(struct kvm_vcpu *vcpu, u64 slb_nr);
u64 (*slbmfev)(struct kvm_vcpu *vcpu, u64 slb_nr);
void (*slbie)(struct kvm_vcpu *vcpu, u64 slb_nr);
void (*slbia)(struct kvm_vcpu *vcpu);
/* 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, 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);
u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
bool (*is_dcbz32)(struct kvm_vcpu *vcpu);
};
struct kvmppc_slb {
u64 esid;
u64 vsid;
u64 orige;
u64 origv;
bool valid : 1;
bool Ks : 1;
bool Kp : 1;
bool nx : 1;
bool large : 1; /* PTEs are 16MB */
bool tb : 1; /* 1TB segment */
bool class : 1;
u8 base_page_size; /* MMU_PAGE_xxx */
};
/* Struct used to accumulate timing information in HV real mode code */
struct kvmhv_tb_accumulator {
u64 seqcount; /* used to synchronize access, also count * 2 */
u64 tb_total; /* total time in timebase ticks */
u64 tb_min; /* min time */
u64 tb_max; /* max time */
};
#ifdef CONFIG_PPC_BOOK3S_64
struct kvmppc_irq_map {
u32 r_hwirq;
u32 v_hwirq;
struct irq_desc *desc;
};
#define KVMPPC_PIRQ_MAPPED 1024
struct kvmppc_passthru_irqmap {
int n_mapped;
struct kvmppc_irq_map mapped[KVMPPC_PIRQ_MAPPED];
};
#endif
# 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 /* Includes a XIVE option */
#define MMIO_HPTE_CACHE_SIZE 4
struct mmio_hpte_cache_entry {
unsigned long hpte_v;
unsigned long hpte_r;
unsigned long rpte;
unsigned long pte_index;
unsigned long eaddr;
unsigned long slb_v;
long mmio_update;
unsigned int slb_base_pshift;
};
struct mmio_hpte_cache {
struct mmio_hpte_cache_entry entry[MMIO_HPTE_CACHE_SIZE];
unsigned int index;
};
#define KVMPPC_VSX_COPY_NONE 0
#define KVMPPC_VSX_COPY_WORD 1
#define KVMPPC_VSX_COPY_DWORD 2
#define KVMPPC_VSX_COPY_DWORD_LOAD_DUMP 3
#define KVMPPC_VSX_COPY_WORD_LOAD_DUMP 4
#define KVMPPC_VMX_COPY_BYTE 8
#define KVMPPC_VMX_COPY_HWORD 9
#define KVMPPC_VMX_COPY_WORD 10
#define KVMPPC_VMX_COPY_DWORD 11
struct openpic;
/* W0 and W1 of a XIVE thread management context */
union xive_tma_w01 {
struct {
u8 nsr;
u8 cppr;
u8 ipb;
u8 lsmfb;
u8 ack;
u8 inc;
u8 age;
u8 pipr;
};
__be64 w01;
};
struct kvm_vcpu_arch {
ulong host_stack;
u32 host_pid;
#ifdef CONFIG_PPC_BOOK3S
struct kvmppc_slb slb[64];
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
struct pt_regs regs;
struct thread_fp_state fp;
#ifdef CONFIG_SPE
ulong evr[32];
ulong spefscr;
ulong host_spefscr;
u64 acc;
#endif
#ifdef CONFIG_ALTIVEC
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
#if defined(CONFIG_BOOKE)
#if defined(CONFIG_KVM_BOOKE_HV) || defined(CONFIG_64BIT)
u32 epcr;
#endif
#endif
#ifdef CONFIG_PPC_BOOK3S
/* For Gekko paired singles */
u32 qpr[32];
#endif
#ifdef CONFIG_PPC_BOOK3S
ulong tar;
#endif
#ifdef CONFIG_PPC_BOOK3S
ulong hflags;
ulong guest_owned_ext;
ulong purr;
ulong spurr;
ulong ic;
ulong dscr;
ulong amr;
ulong uamor;
ulong iamr;
u32 ctrl;
u32 dabrx;
ulong dabr;
ulong dawr;
ulong dawrx;
ulong ciabr;
ulong cfar;
ulong ppr;
u32 pspb;
ulong fscr;
ulong shadow_fscr;
ulong ebbhr;
ulong ebbrr;
ulong bescr;
ulong csigr;
ulong tacr;
ulong tcscr;
ulong acop;
ulong wort;
ulong tid;
ulong psscr;
ulong hfscr;
ulong shadow_srr1;
#endif
u32 vrsave; /* also USPRG0 */
u32 mmucr;
/* shadow_msr is unused for BookE HV */
ulong shadow_msr;
ulong csrr0;
ulong csrr1;
ulong dsrr0;
ulong dsrr1;
ulong mcsrr0;
ulong mcsrr1;
ulong mcsr;
ulong dec;
#ifdef CONFIG_BOOKE
u32 decar;
#endif
/* Time base value when we entered the guest */
u64 entry_tb;
u64 entry_vtb;
u64 entry_ic;
u32 tcr;
ulong tsr; /* we need to perform set/clr_bits() which requires ulong */
u32 ivor[64];
ulong ivpr;
u32 pvr;
u32 shadow_pid;
u32 shadow_pid1;
u32 pid;
u32 swap_pid;
u32 ccr0;
u32 ccr1;
u32 dbsr;
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;
u64 orig_texasr;
u32 cr_tm;
u64 xer_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;
struct kvmppc_exit_timing timing_exit;
struct kvmppc_exit_timing timing_last_enter;
u32 last_exit_type;
u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
u64 timing_last_exit;
struct dentry *debugfs_exit_timing;
#endif
#ifdef CONFIG_PPC_BOOK3S
ulong fault_dar;
u32 fault_dsisr;
unsigned long intr_msr;
ulong fault_gpa; /* guest real address of page fault (POWER9) */
#endif
#ifdef CONFIG_BOOKE
ulong fault_dear;
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;
u64 sprg9;
u32 pwrmgtcr0;
u32 crit_save;
/* guest debug registers*/
struct debug_reg dbg_reg;
#endif
gpa_t paddr_accessed;
gva_t vaddr_accessed;
pgd_t *pgdir;
u16 io_gpr; /* GPR used as IO source/target */
u8 mmio_host_swabbed;
u8 mmio_sign_extend;
/* conversion between single and double precision */
u8 mmio_sp64_extend;
/*
* Number of simulations for vsx.
* If we use 2*8bytes to simulate 1*16bytes,
* then the number should be 2 and
* mmio_copy_type=KVMPPC_VSX_COPY_DWORD.
* If we use 4*4bytes to simulate 1*16bytes,
* the number should be 4 and
* mmio_vsx_copy_type=KVMPPC_VSX_COPY_WORD.
*/
u8 mmio_vsx_copy_nums;
u8 mmio_vsx_offset;
u8 mmio_vmx_copy_nums;
u8 mmio_vmx_offset;
u8 mmio_copy_type;
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;
u8 external_oneshot; /* clear external irq after delivery */
u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
struct hrtimer dec_timer;
u64 dec_jiffies;
u64 dec_expires;
unsigned long pending_exceptions;
u8 ceded;
u8 prodded;
u8 doorbell_request;
u8 irq_pending; /* Used by XIVE to signal pending guest irqs */
u32 last_inst;
struct swait_queue_head *wqp;
struct kvmppc_vcore *vcore;
int ret;
int trap;
int state;
int ptid;
int thread_cpu;
int prev_cpu;
bool timer_running;
wait_queue_head_t cpu_run;
struct machine_check_event mce_evt; /* Valid if trap == 0x200 */
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 */
struct kvmppc_xive_vcpu *xive_vcpu; /* XIVE virtual CPU data */
__be32 xive_cam_word; /* Cooked W2 in proper endian with valid bit */
u8 xive_pushed; /* Is the VP pushed on the physical CPU ? */
u8 xive_esc_on; /* Is the escalation irq enabled ? */
union xive_tma_w01 xive_saved_state; /* W0..1 of XIVE thread state */
u64 xive_esc_raddr; /* Escalation interrupt ESB real addr */
u64 xive_esc_vaddr; /* Escalation interrupt ESB virt addr */
#endif
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
struct kvm_vcpu_arch_shared shregs;
struct mmio_hpte_cache mmio_cache;
unsigned long pgfault_addr;
long pgfault_index;
unsigned long pgfault_hpte[2];
struct mmio_hpte_cache_entry *pgfault_cache;
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;
u32 emul_inst;
u32 online;
/* For support of nested guests */
struct kvm_nested_guest *nested;
u32 nested_vcpu_id;
#endif
#ifdef CONFIG_KVM_BOOK3S_HV_EXIT_TIMING
struct kvmhv_tb_accumulator *cur_activity; /* What we're timing */
u64 cur_tb_start; /* when it started */
struct kvmhv_tb_accumulator rm_entry; /* real-mode entry code */
struct kvmhv_tb_accumulator rm_intr; /* real-mode intr handling */
struct kvmhv_tb_accumulator rm_exit; /* real-mode exit code */
struct kvmhv_tb_accumulator guest_time; /* guest execution */
struct kvmhv_tb_accumulator cede_time; /* time napping inside guest */
struct dentry *debugfs_dir;
struct dentry *debugfs_timings;
#endif /* CONFIG_KVM_BOOK3S_HV_EXIT_TIMING */
};
#define VCPU_FPR(vcpu, i) (vcpu)->arch.fp.fpr[i][TS_FPROFFSET]
#define VCPU_VSX_FPR(vcpu, i, j) ((vcpu)->arch.fp.fpr[i][j])
#define VCPU_VSX_VR(vcpu, i) ((vcpu)->arch.vr.vr[i])
/* Values for vcpu->arch.state */
#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 0x003f
#define KVM_MMIO_REG_EXT_MASK 0xffc0
#define KVM_MMIO_REG_GPR 0x0000
#define KVM_MMIO_REG_FPR 0x0040
#define KVM_MMIO_REG_QPR 0x0080
#define KVM_MMIO_REG_FQPR 0x00c0
#define KVM_MMIO_REG_VSX 0x0100
#define KVM_MMIO_REG_VMX 0x0180
#define __KVM_HAVE_ARCH_WQP
#define __KVM_HAVE_CREATE_DEVICE
static inline void kvm_arch_hardware_disable(void) {}
static inline void kvm_arch_hardware_unsetup(void) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_memslots_updated(struct kvm *kvm, struct kvm_memslots *slots) {}
static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
static inline void kvm_arch_exit(void) {}
static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
#endif /* __POWERPC_KVM_HOST_H__ */
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