diff options
65 files changed, 4359 insertions, 1671 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index e0fa0ea2b18..119358dfb74 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -219,19 +219,6 @@ allocation of vcpu ids. For example, if userspace wants single-threaded guest vcpus, it should make all vcpu ids be a multiple of the number of vcpus per vcore. -On powerpc using book3s_hv mode, the vcpus are mapped onto virtual -threads in one or more virtual CPU cores. (This is because the -hardware requires all the hardware threads in a CPU core to be in the -same partition.) The KVM_CAP_PPC_SMT capability indicates the number -of vcpus per virtual core (vcore). The vcore id is obtained by -dividing the vcpu id by the number of vcpus per vcore. The vcpus in a -given vcore will always be in the same physical core as each other -(though that might be a different physical core from time to time). -Userspace can control the threading (SMT) mode of the guest by its -allocation of vcpu ids. For example, if userspace wants -single-threaded guest vcpus, it should make all vcpu ids be a multiple -of the number of vcpus per vcore. - For virtual cpus that have been created with S390 user controlled virtual machines, the resulting vcpu fd can be memory mapped at page offset KVM_S390_SIE_PAGE_OFFSET in order to obtain a memory map of the virtual @@ -345,7 +332,7 @@ struct kvm_sregs { __u64 interrupt_bitmap[(KVM_NR_INTERRUPTS + 63) / 64]; }; -/* ppc -- see arch/powerpc/include/asm/kvm.h */ +/* ppc -- see arch/powerpc/include/uapi/asm/kvm.h */ interrupt_bitmap is a bitmap of pending external interrupts. At most one bit may be set. This interrupt has been acknowledged by the APIC @@ -892,12 +879,12 @@ It is recommended that the lower 21 bits of guest_phys_addr and userspace_addr be identical. This allows large pages in the guest to be backed by large pages in the host. -The flags field supports two flag, KVM_MEM_LOG_DIRTY_PAGES, which instructs -kvm to keep track of writes to memory within the slot. See KVM_GET_DIRTY_LOG -ioctl. The KVM_CAP_READONLY_MEM capability indicates the availability of the -KVM_MEM_READONLY flag. When this flag is set for a memory region, KVM only -allows read accesses. Writes will be posted to userspace as KVM_EXIT_MMIO -exits. +The flags field supports two flags: KVM_MEM_LOG_DIRTY_PAGES and +KVM_MEM_READONLY. The former can be set to instruct KVM to keep track of +writes to memory within the slot. See KVM_GET_DIRTY_LOG ioctl to know how to +use it. The latter can be set, if KVM_CAP_READONLY_MEM capability allows it, +to make a new slot read-only. In this case, writes to this memory will be +posted to userspace as KVM_EXIT_MMIO exits. When the KVM_CAP_SYNC_MMU capability is available, changes in the backing of the memory region are automatically reflected into the guest. For example, an @@ -931,7 +918,7 @@ documentation when it pops into existence). 4.37 KVM_ENABLE_CAP Capability: KVM_CAP_ENABLE_CAP -Architectures: ppc +Architectures: ppc, s390 Type: vcpu ioctl Parameters: struct kvm_enable_cap (in) Returns: 0 on success; -1 on error @@ -1792,6 +1779,7 @@ registers, find a list below: PPC | KVM_REG_PPC_VPA_SLB | 128 PPC | KVM_REG_PPC_VPA_DTL | 128 PPC | KVM_REG_PPC_EPCR | 32 + PPC | KVM_REG_PPC_EPR | 32 ARM registers are mapped using the lower 32 bits. The upper 16 of that is the register group type, or coprocessor number: @@ -2108,6 +2096,14 @@ KVM_S390_INT_VIRTIO (vm) - virtio external interrupt; external interrupt KVM_S390_INT_SERVICE (vm) - sclp external interrupt; sclp parameter in parm KVM_S390_INT_EMERGENCY (vcpu) - sigp emergency; source cpu in parm KVM_S390_INT_EXTERNAL_CALL (vcpu) - sigp external call; source cpu in parm +KVM_S390_INT_IO(ai,cssid,ssid,schid) (vm) - compound value to indicate an + I/O interrupt (ai - adapter interrupt; cssid,ssid,schid - subchannel); + I/O interruption parameters in parm (subchannel) and parm64 (intparm, + interruption subclass) +KVM_S390_MCHK (vm, vcpu) - machine check interrupt; cr 14 bits in parm, + machine check interrupt code in parm64 (note that + machine checks needing further payload are not + supported by this ioctl) Note that the vcpu ioctl is asynchronous to vcpu execution. @@ -2359,8 +2355,8 @@ executed a memory-mapped I/O instruction which could not be satisfied by kvm. The 'data' member contains the written data if 'is_write' is true, and should be filled by application code otherwise. -NOTE: For KVM_EXIT_IO, KVM_EXIT_MMIO, KVM_EXIT_OSI, KVM_EXIT_DCR - and KVM_EXIT_PAPR the corresponding +NOTE: For KVM_EXIT_IO, KVM_EXIT_MMIO, KVM_EXIT_OSI, KVM_EXIT_DCR, + KVM_EXIT_PAPR and KVM_EXIT_EPR the corresponding operations are complete (and guest state is consistent) only after userspace has re-entered the kernel with KVM_RUN. The kernel side will first finish incomplete operations and then check for pending signals. Userspace @@ -2463,6 +2459,41 @@ The possible hypercalls are defined in the Power Architecture Platform Requirements (PAPR) document available from www.power.org (free developer registration required to access it). + /* KVM_EXIT_S390_TSCH */ + struct { + __u16 subchannel_id; + __u16 subchannel_nr; + __u32 io_int_parm; + __u32 io_int_word; + __u32 ipb; + __u8 dequeued; + } s390_tsch; + +s390 specific. This exit occurs when KVM_CAP_S390_CSS_SUPPORT has been enabled +and TEST SUBCHANNEL was intercepted. If dequeued is set, a pending I/O +interrupt for the target subchannel has been dequeued and subchannel_id, +subchannel_nr, io_int_parm and io_int_word contain the parameters for that +interrupt. ipb is needed for instruction parameter decoding. + + /* KVM_EXIT_EPR */ + struct { + __u32 epr; + } epr; + +On FSL BookE PowerPC chips, the interrupt controller has a fast patch +interrupt acknowledge path to the core. When the core successfully +delivers an interrupt, it automatically populates the EPR register with +the interrupt vector number and acknowledges the interrupt inside +the interrupt controller. + +In case the interrupt controller lives in user space, we need to do +the interrupt acknowledge cycle through it to fetch the next to be +delivered interrupt vector using this exit. + +It gets triggered whenever both KVM_CAP_PPC_EPR are enabled and an +external interrupt has just been delivered into the guest. User space +should put the acknowledged interrupt vector into the 'epr' field. + /* Fix the size of the union. */ char padding[256]; }; @@ -2584,3 +2615,34 @@ For mmu types KVM_MMU_FSL_BOOKE_NOHV and KVM_MMU_FSL_BOOKE_HV: where "num_sets" is the tlb_sizes[] value divided by the tlb_ways[] value. - The tsize field of mas1 shall be set to 4K on TLB0, even though the hardware ignores this value for TLB0. + +6.4 KVM_CAP_S390_CSS_SUPPORT + +Architectures: s390 +Parameters: none +Returns: 0 on success; -1 on error + +This capability enables support for handling of channel I/O instructions. + +TEST PENDING INTERRUPTION and the interrupt portion of TEST SUBCHANNEL are +handled in-kernel, while the other I/O instructions are passed to userspace. + +When this capability is enabled, KVM_EXIT_S390_TSCH will occur on TEST +SUBCHANNEL intercepts. + +6.5 KVM_CAP_PPC_EPR + +Architectures: ppc +Parameters: args[0] defines whether the proxy facility is active +Returns: 0 on success; -1 on error + +This capability enables or disables the delivery of interrupts through the +external proxy facility. + +When enabled (args[0] != 0), every time the guest gets an external interrupt +delivered, it automatically exits into user space with a KVM_EXIT_EPR exit +to receive the topmost interrupt vector. + +When disabled (args[0] == 0), behavior is as if this facility is unsupported. + +When this capability is enabled, KVM_EXIT_EPR can occur. diff --git a/Documentation/virtual/kvm/mmu.txt b/Documentation/virtual/kvm/mmu.txt index fa5f1dbc6b2..43fcb761ed1 100644 --- a/Documentation/virtual/kvm/mmu.txt +++ b/Documentation/virtual/kvm/mmu.txt @@ -187,13 +187,6 @@ Shadow pages contain the following information: perform a reverse map from a pte to a gfn. When role.direct is set, any element of this array can be calculated from the gfn field when used, in this case, the array of gfns is not allocated. See role.direct and gfn. - slot_bitmap: - A bitmap containing one bit per memory slot. If the page contains a pte - mapping a page from memory slot n, then bit n of slot_bitmap will be set - (if a page is aliased among several slots, then it is not guaranteed that - all slots will be marked). - Used during dirty logging to avoid scanning a shadow page if none if its - pages need tracking. root_count: A counter keeping track of how many hardware registers (guest cr3 or pdptrs) are now pointing at the page. While this counter is nonzero, the diff --git a/arch/ia64/include/asm/kvm_host.h b/arch/ia64/include/asm/kvm_host.h index 6d6a5ac48d8..cfa74983c67 100644 --- a/arch/ia64/include/asm/kvm_host.h +++ b/arch/ia64/include/asm/kvm_host.h @@ -23,9 +23,7 @@ #ifndef __ASM_KVM_HOST_H #define __ASM_KVM_HOST_H -#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_COALESCED_MMIO_PAGE_OFFSET 1 diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index bd1c5155503..ad3126a5864 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -955,7 +955,7 @@ long kvm_arch_vm_ioctl(struct file *filp, kvm_mem.guest_phys_addr; kvm_userspace_mem.memory_size = kvm_mem.memory_size; r = kvm_vm_ioctl_set_memory_region(kvm, - &kvm_userspace_mem, 0); + &kvm_userspace_mem, false); if (r) goto out; break; @@ -1580,7 +1580,7 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm, struct kvm_memory_slot *memslot, struct kvm_memory_slot old, struct kvm_userspace_memory_region *mem, - int user_alloc) + bool user_alloc) { unsigned long i; unsigned long pfn; @@ -1611,7 +1611,7 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm, void kvm_arch_commit_memory_region(struct kvm *kvm, struct kvm_userspace_memory_region *mem, struct kvm_memory_slot old, - int user_alloc) + bool user_alloc) { return; } @@ -1834,7 +1834,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, mutex_lock(&kvm->slots_lock); r = -EINVAL; - if (log->slot >= KVM_MEMORY_SLOTS) + if (log->slot >= KVM_USER_MEM_SLOTS) goto out; memslot = id_to_memslot(kvm->memslots, log->slot); diff --git a/arch/ia64/kvm/lapic.h b/arch/ia64/kvm/lapic.h index c5f92a926a9..c3e2935b6db 100644 --- a/arch/ia64/kvm/lapic.h +++ b/arch/ia64/kvm/lapic.h @@ -27,4 +27,10 @@ int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq); #define kvm_apic_present(x) (true) #define kvm_lapic_enabled(x) (true) +static inline bool kvm_apic_vid_enabled(void) +{ + /* IA64 has no apicv supporting, do nothing here */ + return false; +} + #endif diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 03d7beae89a..d1bb8607472 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -37,10 +37,8 @@ #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_MEM_SLOTS_NUM (KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS) +#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 @@ -523,6 +521,8 @@ struct kvm_vcpu_arch { u8 sane; u8 cpu_type; u8 hcall_needed; + u8 epr_enabled; + u8 epr_needed; u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */ diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index 572aa753061..44a657adf41 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -44,12 +44,11 @@ enum emulation_result { EMULATE_DO_DCR, /* kvm_run filled with DCR request */ EMULATE_FAIL, /* can't emulate this instruction */ EMULATE_AGAIN, /* something went wrong. go again */ + EMULATE_DO_PAPR, /* kvm_run filled with PAPR request */ }; extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); -extern char kvmppc_handlers_start[]; -extern unsigned long kvmppc_handler_len; extern void kvmppc_handler_highmem(void); extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); @@ -263,6 +262,15 @@ static inline void kvm_linear_init(void) {} #endif +static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) +{ +#ifdef CONFIG_KVM_BOOKE_HV + mtspr(SPRN_GEPR, epr); +#elif defined(CONFIG_BOOKE) + vcpu->arch.epr = epr; +#endif +} + int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, struct kvm_config_tlb *cfg); int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 7035e608f3f..e6658612203 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -956,8 +956,6 @@ #define SPRN_SPRG_RSCRATCH_DBG SPRN_SPRG9 #define SPRN_SPRG_WSCRATCH_DBG SPRN_SPRG9 #endif -#define SPRN_SPRG_RVCPU SPRN_SPRG1 -#define SPRN_SPRG_WVCPU SPRN_SPRG1 #endif #ifdef CONFIG_8xx diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h index e07e6af5e1f..b417de3cc2c 100644 --- a/arch/powerpc/include/asm/reg_booke.h +++ b/arch/powerpc/include/asm/reg_booke.h @@ -56,6 +56,7 @@ #define SPRN_SPRG7W 0x117 /* Special Purpose Register General 7 Write */ #define SPRN_EPCR 0x133 /* Embedded Processor Control Register */ #define SPRN_DBCR2 0x136 /* Debug Control Register 2 */ +#define SPRN_DBCR4 0x233 /* Debug Control Register 4 */ #define SPRN_MSRP 0x137 /* MSR Protect Register */ #define SPRN_IAC3 0x13A /* Instruction Address Compare 3 */ #define SPRN_IAC4 0x13B /* Instruction Address Compare 4 */ diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h index 2fba8a66fb1..16064d00adb 100644 --- a/arch/powerpc/include/uapi/asm/kvm.h +++ b/arch/powerpc/include/uapi/asm/kvm.h @@ -114,7 +114,10 @@ struct kvm_regs { /* Embedded Floating Point (SPE) -- IVOR32-34 if KVM_SREGS_E_IVOR */ #define KVM_SREGS_E_SPE (1 << 9) -/* External Proxy (EXP) -- EPR */ +/* + * DEPRECATED! USE ONE_REG FOR THIS ONE! + * External Proxy (EXP) -- EPR + */ #define KVM_SREGS_EXP (1 << 10) /* External PID (E.PD) -- EPSC/EPLC */ @@ -412,5 +415,6 @@ struct kvm_get_htab_header { #define KVM_REG_PPC_VPA_DTL (KVM_REG_PPC | KVM_REG_SIZE_U128 | 0x84) #define KVM_REG_PPC_EPCR (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x85) +#define KVM_REG_PPC_EPR (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x86) #endif /* __LINUX_KVM_POWERPC_H */ diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 78119036729..b6c17ec9b16 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -118,7 +118,7 @@ int main(void) #ifdef CONFIG_KVM_BOOK3S_32_HANDLER DEFINE(THREAD_KVM_SVCPU, offsetof(struct thread_struct, kvm_shadow_vcpu)); #endif -#ifdef CONFIG_KVM_BOOKE_HV +#if defined(CONFIG_KVM) && defined(CONFIG_BOOKE) DEFINE(THREAD_KVM_VCPU, offsetof(struct thread_struct, kvm_vcpu)); #endif diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile index 1e473d46322..b772eded8c2 100644 --- a/arch/powerpc/kvm/Makefile +++ b/arch/powerpc/kvm/Makefile @@ -10,7 +10,8 @@ common-objs-y = $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o \ eventfd.o) CFLAGS_44x_tlb.o := -I. -CFLAGS_e500_tlb.o := -I. +CFLAGS_e500_mmu.o := -I. +CFLAGS_e500_mmu_host.o := -I. CFLAGS_emulate.o := -I. common-objs-y += powerpc.o emulate.o @@ -35,7 +36,8 @@ kvm-e500-objs := \ booke_emulate.o \ booke_interrupts.o \ e500.o \ - e500_tlb.o \ + e500_mmu.o \ + e500_mmu_host.o \ e500_emulate.o kvm-objs-$(CONFIG_KVM_E500V2) := $(kvm-e500-objs) @@ -45,7 +47,8 @@ kvm-e500mc-objs := \ booke_emulate.o \ bookehv_interrupts.o \ e500mc.o \ - e500_tlb.o \ + e500_mmu.o \ + e500_mmu_host.o \ e500_emulate.o kvm-objs-$(CONFIG_KVM_E500MC) := $(kvm-e500mc-objs) diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c index d31a716f7f2..836c56975e2 100644 --- a/arch/powerpc/kvm/book3s_emulate.c +++ b/arch/powerpc/kvm/book3s_emulate.c @@ -34,6 +34,8 @@ #define OP_31_XOP_MTSRIN 242 #define OP_31_XOP_TLBIEL 274 #define OP_31_XOP_TLBIE 306 +/* Opcode is officially reserved, reuse it as sc 1 when sc 1 doesn't trap */ +#define OP_31_XOP_FAKE_SC1 308 #define OP_31_XOP_SLBMTE 402 #define OP_31_XOP_SLBIE 434 #define OP_31_XOP_SLBIA 498 @@ -170,6 +172,32 @@ int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, vcpu->arch.mmu.tlbie(vcpu, addr, large); break; } +#ifdef CONFIG_KVM_BOOK3S_64_PR + case OP_31_XOP_FAKE_SC1: + { + /* SC 1 papr hypercalls */ + ulong cmd = kvmppc_get_gpr(vcpu, 3); + int i; + + if ((vcpu->arch.shared->msr & MSR_PR) || + !vcpu->arch.papr_enabled) { + emulated = EMULATE_FAIL; + break; + } + + if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE) + break; + + run->papr_hcall.nr = cmd; + for (i = 0; i < 9; ++i) { + ulong gpr = kvmppc_get_gpr(vcpu, 4 + i); + run->papr_hcall.args[i] = gpr; + } + + emulated = EMULATE_DO_PAPR; + break; + } +#endif case OP_31_XOP_EIOIO: break; case OP_31_XOP_SLBMTE: @@ -427,6 +455,7 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val) case SPRN_PMC3_GEKKO: case SPRN_PMC4_GEKKO: case SPRN_WPAR_GEKKO: + case SPRN_MSSSR0: break; unprivileged: default: @@ -523,6 +552,7 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val) case SPRN_PMC3_GEKKO: case SPRN_PMC4_GEKKO: case SPRN_WPAR_GEKKO: + case SPRN_MSSSR0: *spr_val = 0; break; default: diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 71d0c90b62b..80dcc53a1ab 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -1549,7 +1549,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) mutex_lock(&kvm->slots_lock); r = -EINVAL; - if (log->slot >= KVM_MEMORY_SLOTS) + if (log->slot >= KVM_USER_MEM_SLOTS) goto out; memslot = id_to_memslot(kvm->memslots, log->slot); diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index 6702442ca81..5e93438afb0 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -762,6 +762,11 @@ program_interrupt: run->exit_reason = KVM_EXIT_MMIO; r = RESUME_HOST_NV; break; + case EMULATE_DO_PAPR: + run->exit_reason = KVM_EXIT_PAPR_HCALL; + vcpu->arch.hcall_needed = 1; + r = RESUME_HOST_NV; + break; default: BUG(); } diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 69f11401578..020923e4313 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc |