diff options
73 files changed, 2712 insertions, 696 deletions
diff --git a/Documentation/virt/kvm/api.txt b/Documentation/virt/kvm/api.txt index bd29d44af32b..ebb37b34dcfc 100644 --- a/Documentation/virt/kvm/api.txt +++ b/Documentation/virt/kvm/api.txt @@ -5,7 +5,7 @@ The Definitive KVM (Kernel-based Virtual Machine) API Documentation ---------------------- The kvm API is a set of ioctls that are issued to control various aspects -of a virtual machine. The ioctls belong to three classes: +of a virtual machine. The ioctls belong to the following classes: - System ioctls: These query and set global attributes which affect the whole kvm subsystem. In addition a system ioctl is used to create @@ -3002,6 +3002,9 @@ can be determined by querying the KVM_CAP_GUEST_DEBUG_HW_BPS and KVM_CAP_GUEST_DEBUG_HW_WPS capabilities which return a positive number indicating the number of supported registers. +For ppc, the KVM_CAP_PPC_GUEST_DEBUG_SSTEP capability indicates whether +the single-step debug event (KVM_GUESTDBG_SINGLESTEP) is supported. + When debug events exit the main run loop with the reason KVM_EXIT_DEBUG with the kvm_debug_exit_arch part of the kvm_run structure containing architecture specific debug information. @@ -4146,6 +4149,24 @@ Valid values for 'action': #define KVM_PMU_EVENT_ALLOW 0 #define KVM_PMU_EVENT_DENY 1 +4.121 KVM_PPC_SVM_OFF + +Capability: basic +Architectures: powerpc +Type: vm ioctl +Parameters: none +Returns: 0 on successful completion, +Errors: + EINVAL: if ultravisor failed to terminate the secure guest + ENOMEM: if hypervisor failed to allocate new radix page tables for guest + +This ioctl is used to turn off the secure mode of the guest or transition +the guest from secure mode to normal mode. This is invoked when the guest +is reset. This has no effect if called for a normal guest. + +This ioctl issues an ultravisor call to terminate the secure guest, +unpins the VPA pages and releases all the device pages that are used to +track the secure pages by hypervisor. 5. The kvm_run structure ------------------------ diff --git a/Documentation/virt/kvm/devices/xics.txt b/Documentation/virt/kvm/devices/xics.txt index 42864935ac5d..423332dda7bc 100644 --- a/Documentation/virt/kvm/devices/xics.txt +++ b/Documentation/virt/kvm/devices/xics.txt @@ -3,9 +3,19 @@ XICS interrupt controller Device type supported: KVM_DEV_TYPE_XICS Groups: - KVM_DEV_XICS_SOURCES + 1. KVM_DEV_XICS_GRP_SOURCES Attributes: One per interrupt source, indexed by the source number. + 2. KVM_DEV_XICS_GRP_CTRL + Attributes: + 2.1 KVM_DEV_XICS_NR_SERVERS (write only) + The kvm_device_attr.addr points to a __u32 value which is the number of + interrupt server numbers (ie, highest possible vcpu id plus one). + Errors: + -EINVAL: Value greater than KVM_MAX_VCPU_ID. + -EFAULT: Invalid user pointer for attr->addr. + -EBUSY: A vcpu is already connected to the device. + This device emulates the XICS (eXternal Interrupt Controller Specification) defined in PAPR. The XICS has a set of interrupt sources, each identified by a 20-bit source number, and a set of @@ -38,7 +48,7 @@ least-significant end of the word: Each source has 64 bits of state that can be read and written using the KVM_GET_DEVICE_ATTR and KVM_SET_DEVICE_ATTR ioctls, specifying the -KVM_DEV_XICS_SOURCES attribute group, with the attribute number being +KVM_DEV_XICS_GRP_SOURCES attribute group, with the attribute number being the interrupt source number. The 64 bit state word has the following bitfields, starting from the least-significant end of the word: diff --git a/Documentation/virt/kvm/devices/xive.txt b/Documentation/virt/kvm/devices/xive.txt index 9a24a4525253..f5d1d6b5af61 100644 --- a/Documentation/virt/kvm/devices/xive.txt +++ b/Documentation/virt/kvm/devices/xive.txt @@ -78,6 +78,14 @@ the legacy interrupt mode, referred as XICS (POWER7/8). migrating the VM. Errors: none + 1.3 KVM_DEV_XIVE_NR_SERVERS (write only) + The kvm_device_attr.addr points to a __u32 value which is the number of + interrupt server numbers (ie, highest possible vcpu id plus one). + Errors: + -EINVAL: Value greater than KVM_MAX_VCPU_ID. + -EFAULT: Invalid user pointer for attr->addr. + -EBUSY: A vCPU is already connected to the device. + 2. KVM_DEV_XIVE_GRP_SOURCE (write only) Initializes a new source in the XIVE device and mask it. Attributes: diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 3e56c9c2f16e..d7fef29b47c9 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -451,6 +451,23 @@ config PPC_TRANSACTIONAL_MEM help Support user-mode Transactional Memory on POWERPC. +config PPC_UV + bool "Ultravisor support" + depends on KVM_BOOK3S_HV_POSSIBLE + select ZONE_DEVICE + select DEV_PAGEMAP_OPS + select DEVICE_PRIVATE + select MEMORY_HOTPLUG + select MEMORY_HOTREMOVE + default n + help + This option paravirtualizes the kernel to run in POWER platforms that + supports the Protected Execution Facility (PEF). On such platforms, + the ultravisor firmware runs at a privilege level above the + hypervisor. + + If unsure, say "N". + config LD_HEAD_STUB_CATCH bool "Reserve 256 bytes to cope with linker stubs in HEAD text" if EXPERT depends on PPC64 diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h index 11112023e327..13bd870609c3 100644 --- a/arch/powerpc/include/asm/hvcall.h +++ b/arch/powerpc/include/asm/hvcall.h @@ -342,6 +342,15 @@ #define H_TLB_INVALIDATE 0xF808 #define H_COPY_TOFROM_GUEST 0xF80C +/* Flags for H_SVM_PAGE_IN */ +#define H_PAGE_IN_SHARED 0x1 + +/* Platform-specific hcalls used by the Ultravisor */ +#define H_SVM_PAGE_IN 0xEF00 +#define H_SVM_PAGE_OUT 0xEF04 +#define H_SVM_INIT_START 0xEF08 +#define H_SVM_INIT_DONE 0xEF0C + /* Values for 2nd argument to H_SET_MODE */ #define H_SET_MODE_RESOURCE_SET_CIABR 1 #define H_SET_MODE_RESOURCE_SET_DAWR 2 diff --git a/arch/powerpc/include/asm/kvm_book3s_uvmem.h b/arch/powerpc/include/asm/kvm_book3s_uvmem.h new file mode 100644 index 000000000000..50204e228f16 --- /dev/null +++ b/arch/powerpc/include/asm/kvm_book3s_uvmem.h @@ -0,0 +1,74 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_KVM_BOOK3S_UVMEM_H__ +#define __ASM_KVM_BOOK3S_UVMEM_H__ + +#ifdef CONFIG_PPC_UV +int kvmppc_uvmem_init(void); +void kvmppc_uvmem_free(void); +int kvmppc_uvmem_slot_init(struct kvm *kvm, const struct kvm_memory_slot *slot); +void kvmppc_uvmem_slot_free(struct kvm *kvm, + const struct kvm_memory_slot *slot); +unsigned long kvmppc_h_svm_page_in(struct kvm *kvm, + unsigned long gra, + unsigned long flags, + unsigned long page_shift); +unsigned long kvmppc_h_svm_page_out(struct kvm *kvm, + unsigned long gra, + unsigned long flags, + unsigned long page_shift); +unsigned long kvmppc_h_svm_init_start(struct kvm *kvm); +unsigned long kvmppc_h_svm_init_done(struct kvm *kvm); +int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn); +void kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free, + struct kvm *kvm); +#else +static inline int kvmppc_uvmem_init(void) +{ + return 0; +} + +static inline void kvmppc_uvmem_free(void) { } + +static inline int +kvmppc_uvmem_slot_init(struct kvm *kvm, const struct kvm_memory_slot *slot) +{ + return 0; +} + +static inline void +kvmppc_uvmem_slot_free(struct kvm *kvm, const struct kvm_memory_slot *slot) { } + +static inline unsigned long +kvmppc_h_svm_page_in(struct kvm *kvm, unsigned long gra, + unsigned long flags, unsigned long page_shift) +{ + return H_UNSUPPORTED; +} + +static inline unsigned long +kvmppc_h_svm_page_out(struct kvm *kvm, unsigned long gra, + unsigned long flags, unsigned long page_shift) +{ + return H_UNSUPPORTED; +} + +static inline unsigned long kvmppc_h_svm_init_start(struct kvm *kvm) +{ + return H_UNSUPPORTED; +} + +static inline unsigned long kvmppc_h_svm_init_done(struct kvm *kvm) +{ + return H_UNSUPPORTED; +} + +static inline int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn) +{ + return -EFAULT; +} + +static inline void +kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free, + struct kvm *kvm) { } +#endif /* CONFIG_PPC_UV */ +#endif /* __ASM_KVM_BOOK3S_UVMEM_H__ */ diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 6fe6ad64cba5..0a398f2321c2 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -275,6 +275,10 @@ struct kvm_hpt_info { struct kvm_resize_hpt; +/* Flag values for kvm_arch.secure_guest */ +#define KVMPPC_SECURE_INIT_START 0x1 /* H_SVM_INIT_START has been called */ +#define KVMPPC_SECURE_INIT_DONE 0x2 /* H_SVM_INIT_DONE completed */ + struct kvm_arch { unsigned int lpid; unsigned int smt_mode; /* # vcpus per virtual core */ @@ -330,6 +334,8 @@ struct kvm_arch { #endif struct kvmppc_ops *kvm_ops; #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE + struct mutex uvmem_lock; + struct list_head uvmem_pfns; struct mutex mmu_setup_lock; /* nests inside vcpu mutexes */ u64 l1_ptcr; int max_nested_lpid; @@ -401,7 +407,6 @@ struct kvmppc_mmu { 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); diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index ee62776e5433..3d2f871241a8 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -271,6 +271,7 @@ struct kvmppc_ops { union kvmppc_one_reg *val); void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); void (*vcpu_put)(struct kvm_vcpu *vcpu); + void (*inject_interrupt)(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags); void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); @@ -321,6 +322,7 @@ struct kvmppc_ops { int size); int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr, int size); + int (*svm_off)(struct kvm *kvm); }; extern struct kvmppc_ops *kvmppc_hv_ops; diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index b3cbb1136bce..75c7e95a321b 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -748,6 +748,18 @@ #define SPRN_USPRG7 0x107 /* SPRG7 userspace read */ #define SPRN_SRR0 0x01A /* Save/Restore Register 0 */ #define SPRN_SRR1 0x01B /* Save/Restore Register 1 */ + +#ifdef CONFIG_PPC_BOOK3S +/* + * Bits loaded from MSR upon interrupt. + * PPC (64-bit) bits 33-36,42-47 are interrupt dependent, the others are + * loaded from MSR. The exception is that SRESET and MCE do not always load + * bit 62 (RI) from MSR. Don't use PPC_BITMASK for this because 32-bit uses + * it. + */ +#define SRR1_MSR_BITS (~0x783f0000UL) +#endif + #define SRR1_ISI_NOPT 0x40000000 /* ISI: Not found in hash */ #define SRR1_ISI_N_OR_G 0x10000000 /* ISI: Access is no-exec or G */ #define SRR1_ISI_PROT 0x08000000 /* ISI: Other protection fault */ diff --git a/arch/powerpc/include/asm/ultravisor-api.h b/arch/powerpc/include/asm/ultravisor-api.h index 4fcda1d5793d..b66f6db7be6c 100644 --- a/arch/powerpc/include/asm/ultravisor-api.h +++ b/arch/powerpc/include/asm/ultravisor-api.h @@ -26,8 +26,14 @@ #define UV_WRITE_PATE 0xF104 #define UV_RETURN 0xF11C #define UV_ESM 0xF110 +#define UV_REGISTER_MEM_SLOT 0xF120 +#define UV_UNREGISTER_MEM_SLOT 0xF124 +#define UV_PAGE_IN 0xF128 +#define UV_PAGE_OUT 0xF12C #define UV_SHARE_PAGE 0xF130 #define UV_UNSHARE_PAGE 0xF134 #define UV_UNSHARE_ALL_PAGES 0xF140 +#define UV_PAGE_INVAL 0xF138 +#define UV_SVM_TERMINATE 0xF13C #endif /* _ASM_POWERPC_ULTRAVISOR_API_H */ diff --git a/arch/powerpc/include/asm/ultravisor.h b/arch/powerpc/include/asm/ultravisor.h index b1bc2e043ed4..790b0e63681f 100644 --- a/arch/powerpc/include/asm/ultravisor.h +++ b/arch/powerpc/include/asm/ultravisor.h @@ -46,4 +46,40 @@ static inline int uv_unshare_all_pages(void) return ucall_norets(UV_UNSHARE_ALL_PAGES); } +static inline int uv_page_in(u64 lpid, u64 src_ra, u64 dst_gpa, u64 flags, + u64 page_shift) +{ + return ucall_norets(UV_PAGE_IN, lpid, src_ra, dst_gpa, flags, + page_shift); +} + +static inline int uv_page_out(u64 lpid, u64 dst_ra, u64 src_gpa, u64 flags, + u64 page_shift) +{ + return ucall_norets(UV_PAGE_OUT, lpid, dst_ra, src_gpa, flags, + page_shift); +} + +static inline int uv_register_mem_slot(u64 lpid, u64 start_gpa, u64 size, + u64 flags, u64 slotid) +{ + return ucall_norets(UV_REGISTER_MEM_SLOT, lpid, start_gpa, + size, flags, slotid); +} + +static inline int uv_unregister_mem_slot(u64 lpid, u64 slotid) +{ + return ucall_norets(UV_UNREGISTER_MEM_SLOT, lpid, slotid); +} + +static inline int uv_page_inval(u64 lpid, u64 gpa, u64 page_shift) +{ + return ucall_norets(UV_PAGE_INVAL, lpid, gpa, page_shift); +} + +static inline int uv_svm_terminate(u64 lpid) +{ + return ucall_norets(UV_SVM_TERMINATE, lpid); +} + #endif /* _ASM_POWERPC_ULTRAVISOR_H */ diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h index b0f72dea8b11..264e266a85bf 100644 --- a/arch/powerpc/include/uapi/asm/kvm.h +++ b/arch/powerpc/include/uapi/asm/kvm.h @@ -667,6 +667,8 @@ struct kvm_ppc_cpu_char { /* PPC64 eXternal Interrupt Controller Specification */ #define KVM_DEV_XICS_GRP_SOURCES 1 /* 64-bit source attributes */ +#define KVM_DEV_XICS_GRP_CTRL 2 +#define KVM_DEV_XICS_NR_SERVERS 1 /* Layout of 64-bit source attribute values */ #define KVM_XICS_DESTINATION_SHIFT 0 @@ -683,6 +685,7 @@ struct kvm_ppc_cpu_char { #define KVM_DEV_XIVE_GRP_CTRL 1 #define KVM_DEV_XIVE_RESET 1 #define KVM_DEV_XIVE_EQ_SYNC 2 +#define KVM_DEV_XIVE_NR_SERVERS 3 #define KVM_DEV_XIVE_GRP_SOURCE 2 /* 64-bit source identifier */ #define KVM_DEV_XIVE_GRP_SOURCE_CONFIG 3 /* 64-bit source identifier */ #define KVM_DEV_XIVE_GRP_EQ_CONFIG 4 /* 64-bit EQ identifier */ diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile index 4c67cc79de7c..2bfeaa13befb 100644 --- a/arch/powerpc/kvm/Makefile +++ b/arch/powerpc/kvm/Makefile @@ -71,6 +71,9 @@ kvm-hv-y += \ book3s_64_mmu_radix.o \ book3s_hv_nested.o +kvm-hv-$(CONFIG_PPC_UV) += \ + book3s_hv_uvmem.o + kvm-hv-$(CONFIG_PPC_TRANSACTIONAL_MEM) += \ book3s_hv_tm.o diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index ec2547cc5ecb..58a59ee998e2 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -74,27 +74,6 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { NULL } }; -void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu) -{ - if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) { - ulong pc = kvmppc_get_pc(vcpu); - ulong lr = kvmppc_get_lr(vcpu); - if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS) - kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK); - if ((lr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS) - kvmppc_set_lr(vcpu, lr & ~SPLIT_HACK_MASK); - vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK; - } -} -EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real); - -static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) -{ - if (!is_kvmppc_hv_enabled(vcpu->kvm)) - return to_book3s(vcpu)->hior; - return 0; -} - static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, unsigned long pending_now, unsigned long old_pending) { @@ -134,11 +113,7 @@ static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags) { - kvmppc_unfixup_split_real(vcpu); - kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu)); - kvmppc_set_srr1(vcpu, (kvmppc_get_msr(vcpu) & ~0x783f0000ul) | flags); - kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec); - vcpu->arch.mmu.reset_msr(vcpu); + vcpu->kvm->arch.kvm_ops->inject_interrupt(vcpu, vec, flags); } static int kvmppc_book3s_vec2irqprio(unsigned int vec) diff --git a/arch/powerpc/kvm/book3s.h b/arch/powerpc/kvm/bo |