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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 14:35:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 14:35:31 -0700
commit2e7580b0e75d771d93e24e681031a165b1d31071 (patch)
treed9449702609eeaab28913a43b5a4434667e09d43 /include
parentd25413efa9536e2f425ea45c7720598035c597bc (diff)
parentcf9eeac46350b8b43730b7dc5e999757bed089a4 (diff)
Merge branch 'kvm-updates/3.4' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Avi Kivity: "Changes include timekeeping improvements, support for assigning host PCI devices that share interrupt lines, s390 user-controlled guests, a large ppc update, and random fixes." This is with the sign-off's fixed, hopefully next merge window we won't have rebased commits. * 'kvm-updates/3.4' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (130 commits) KVM: Convert intx_mask_lock to spin lock KVM: x86: fix kvm_write_tsc() TSC matching thinko x86: kvmclock: abstract save/restore sched_clock_state KVM: nVMX: Fix erroneous exception bitmap check KVM: Ignore the writes to MSR_K7_HWCR(3) KVM: MMU: make use of ->root_level in reset_rsvds_bits_mask KVM: PMU: add proper support for fixed counter 2 KVM: PMU: Fix raw event check KVM: PMU: warn when pin control is set in eventsel msr KVM: VMX: Fix delayed load of shared MSRs KVM: use correct tlbs dirty type in cmpxchg KVM: Allow host IRQ sharing for assigned PCI 2.3 devices KVM: Ensure all vcpus are consistent with in-kernel irqchip settings KVM: x86 emulator: Allow PM/VM86 switch during task switch KVM: SVM: Fix CPL updates KVM: x86 emulator: VM86 segments must have DPL 3 KVM: x86 emulator: Fix task switch privilege checks arch/powerpc/kvm/book3s_hv.c: included linux/sched.h twice KVM: x86 emulator: correctly mask pmc index bits in RDPMC instruction emulation KVM: mmu_notifier: Flush TLBs before releasing mmu_lock ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/kvm.h98
-rw-r--r--include/linux/kvm_host.h69
2 files changed, 155 insertions, 12 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 68e67e50d02..6c322a90b92 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -162,6 +162,7 @@ struct kvm_pit_config {
#define KVM_EXIT_INTERNAL_ERROR 17
#define KVM_EXIT_OSI 18
#define KVM_EXIT_PAPR_HCALL 19
+#define KVM_EXIT_S390_UCONTROL 20
/* For KVM_EXIT_INTERNAL_ERROR */
#define KVM_INTERNAL_ERROR_EMULATION 1
@@ -249,6 +250,11 @@ struct kvm_run {
#define KVM_S390_RESET_CPU_INIT 8
#define KVM_S390_RESET_IPL 16
__u64 s390_reset_flags;
+ /* KVM_EXIT_S390_UCONTROL */
+ struct {
+ __u64 trans_exc_code;
+ __u32 pgm_code;
+ } s390_ucontrol;
/* KVM_EXIT_DCR */
struct {
__u32 dcrn;
@@ -273,6 +279,20 @@ struct kvm_run {
/* Fix the size of the union. */
char padding[256];
};
+
+ /*
+ * shared registers between kvm and userspace.
+ * kvm_valid_regs specifies the register classes set by the host
+ * kvm_dirty_regs specified the register classes dirtied by userspace
+ * struct kvm_sync_regs is architecture specific, as well as the
+ * bits for kvm_valid_regs and kvm_dirty_regs
+ */
+ __u64 kvm_valid_regs;
+ __u64 kvm_dirty_regs;
+ union {
+ struct kvm_sync_regs regs;
+ char padding[1024];
+ } s;
};
/* for KVM_REGISTER_COALESCED_MMIO / KVM_UNREGISTER_COALESCED_MMIO */
@@ -431,6 +451,11 @@ struct kvm_ppc_pvinfo {
#define KVMIO 0xAE
+/* machine type bits, to be used as argument to KVM_CREATE_VM */
+#define KVM_VM_S390_UCONTROL 1
+
+#define KVM_S390_SIE_PAGE_OFFSET 1
+
/*
* ioctls for /dev/kvm fds:
*/
@@ -555,9 +580,15 @@ struct kvm_ppc_pvinfo {
#define KVM_CAP_PPC_SMT 64
#define KVM_CAP_PPC_RMA 65
#define KVM_CAP_MAX_VCPUS 66 /* returns max vcpus per vm */
+#define KVM_CAP_PPC_HIOR 67
#define KVM_CAP_PPC_PAPR 68
+#define KVM_CAP_SW_TLB 69
+#define KVM_CAP_ONE_REG 70
#define KVM_CAP_S390_GMAP 71
#define KVM_CAP_TSC_DEADLINE_TIMER 72
+#define KVM_CAP_S390_UCONTROL 73
+#define KVM_CAP_SYNC_REGS 74
+#define KVM_CAP_PCI_2_3 75
#ifdef KVM_CAP_IRQ_ROUTING
@@ -637,6 +668,52 @@ struct kvm_clock_data {
__u32 pad[9];
};
+#define KVM_MMU_FSL_BOOKE_NOHV 0
+#define KVM_MMU_FSL_BOOKE_HV 1
+
+struct kvm_config_tlb {
+ __u64 params;
+ __u64 array;
+ __u32 mmu_type;
+ __u32 array_len;
+};
+
+struct kvm_dirty_tlb {
+ __u64 bitmap;
+ __u32 num_dirty;
+};
+
+/* Available with KVM_CAP_ONE_REG */
+
+#define KVM_REG_ARCH_MASK 0xff00000000000000ULL
+#define KVM_REG_GENERIC 0x0000000000000000ULL
+
+/*
+ * Architecture specific registers are to be defined in arch headers and
+ * ORed with the arch identifier.
+ */
+#define KVM_REG_PPC 0x1000000000000000ULL
+#define KVM_REG_X86 0x2000000000000000ULL
+#define KVM_REG_IA64 0x3000000000000000ULL
+#define KVM_REG_ARM 0x4000000000000000ULL
+#define KVM_REG_S390 0x5000000000000000ULL
+
+#define KVM_REG_SIZE_SHIFT 52
+#define KVM_REG_SIZE_MASK 0x00f0000000000000ULL
+#define KVM_REG_SIZE_U8 0x0000000000000000ULL
+#define KVM_REG_SIZE_U16 0x0010000000000000ULL
+#define KVM_REG_SIZE_U32 0x0020000000000000ULL
+#define KVM_REG_SIZE_U64 0x0030000000000000ULL
+#define KVM_REG_SIZE_U128 0x0040000000000000ULL
+#define KVM_REG_SIZE_U256 0x0050000000000000ULL
+#define KVM_REG_SIZE_U512 0x0060000000000000ULL
+#define KVM_REG_SIZE_U1024 0x0070000000000000ULL
+
+struct kvm_one_reg {
+ __u64 id;
+ __u64 addr;
+};
+
/*
* ioctls for VM fds
*/
@@ -655,6 +732,17 @@ struct kvm_clock_data {
struct kvm_userspace_memory_region)
#define KVM_SET_TSS_ADDR _IO(KVMIO, 0x47)
#define KVM_SET_IDENTITY_MAP_ADDR _IOW(KVMIO, 0x48, __u64)
+
+/* enable ucontrol for s390 */
+struct kvm_s390_ucas_mapping {
+ __u64 user_addr;
+ __u64 vcpu_addr;
+ __u64 length;
+};
+#define KVM_S390_UCAS_MAP _IOW(KVMIO, 0x50, struct kvm_s390_ucas_mapping)
+#define KVM_S390_UCAS_UNMAP _IOW(KVMIO, 0x51, struct kvm_s390_ucas_mapping)
+#define KVM_S390_VCPU_FAULT _IOW(KVMIO, 0x52, unsigned long)
+
/* Device model IOC */
#define KVM_CREATE_IRQCHIP _IO(KVMIO, 0x60)
#define KVM_IRQ_LINE _IOW(KVMIO, 0x61, struct kvm_irq_level)
@@ -697,6 +785,9 @@ struct kvm_clock_data {
/* Available with KVM_CAP_TSC_CONTROL */
#define KVM_SET_TSC_KHZ _IO(KVMIO, 0xa2)
#define KVM_GET_TSC_KHZ _IO(KVMIO, 0xa3)
+/* Available with KVM_CAP_PCI_2_3 */
+#define KVM_ASSIGN_SET_INTX_MASK _IOW(KVMIO, 0xa4, \
+ struct kvm_assigned_pci_dev)
/*
* ioctls for vcpu fds
@@ -763,8 +854,15 @@ struct kvm_clock_data {
#define KVM_CREATE_SPAPR_TCE _IOW(KVMIO, 0xa8, struct kvm_create_spapr_tce)
/* Available with KVM_CAP_RMA */
#define KVM_ALLOCATE_RMA _IOR(KVMIO, 0xa9, struct kvm_allocate_rma)
+/* Available with KVM_CAP_SW_TLB */
+#define KVM_DIRTY_TLB _IOW(KVMIO, 0xaa, struct kvm_dirty_tlb)
+/* Available with KVM_CAP_ONE_REG */
+#define KVM_GET_ONE_REG _IOW(KVMIO, 0xab, struct kvm_one_reg)
+#define KVM_SET_ONE_REG _IOW(KVMIO, 0xac, struct kvm_one_reg)
#define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0)
+#define KVM_DEV_ASSIGN_PCI_2_3 (1 << 1)
+#define KVM_DEV_ASSIGN_MASK_INTX (1 << 2)
struct kvm_assigned_pci_dev {
__u32 assigned_dev_id;
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index ca1b153585d..665a260c7e0 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -172,11 +172,6 @@ static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
*/
#define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
-struct kvm_lpage_info {
- unsigned long rmap_pde;
- int write_count;
-};
-
struct kvm_memory_slot {
gfn_t base_gfn;
unsigned long npages;
@@ -185,7 +180,7 @@ struct kvm_memory_slot {
unsigned long *dirty_bitmap;
unsigned long *dirty_bitmap_head;
unsigned long nr_dirty_pages;
- struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
+ struct kvm_arch_memory_slot arch;
unsigned long userspace_addr;
int user_alloc;
int id;
@@ -377,6 +372,9 @@ int kvm_set_memory_region(struct kvm *kvm,
int __kvm_set_memory_region(struct kvm *kvm,
struct kvm_userspace_memory_region *mem,
int user_alloc);
+void kvm_arch_free_memslot(struct kvm_memory_slot *free,
+ struct kvm_memory_slot *dont);
+int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages);
int kvm_arch_prepare_memory_region(struct kvm *kvm,
struct kvm_memory_slot *memslot,
struct kvm_memory_slot old,
@@ -386,6 +384,7 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
struct kvm_userspace_memory_region *mem,
struct kvm_memory_slot old,
int user_alloc);
+bool kvm_largepages_enabled(void);
void kvm_disable_largepages(void);
void kvm_arch_flush_shadow(struct kvm *kvm);
@@ -451,6 +450,7 @@ long kvm_arch_dev_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg);
long kvm_arch_vcpu_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg);
+int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf);
int kvm_dev_ioctl_check_extension(long ext);
@@ -521,7 +521,7 @@ static inline void kvm_arch_free_vm(struct kvm *kvm)
}
#endif
-int kvm_arch_init_vm(struct kvm *kvm);
+int kvm_arch_init_vm(struct kvm *kvm, unsigned long type);
void kvm_arch_destroy_vm(struct kvm *kvm);
void kvm_free_all_assigned_devices(struct kvm *kvm);
void kvm_arch_sync_events(struct kvm *kvm);
@@ -547,6 +547,7 @@ struct kvm_assigned_dev_kernel {
unsigned int entries_nr;
int host_irq;
bool host_irq_disabled;
+ bool pci_2_3;
struct msix_entry *host_msix_entries;
int guest_irq;
struct msix_entry *guest_msix_entries;
@@ -556,6 +557,7 @@ struct kvm_assigned_dev_kernel {
struct pci_dev *dev;
struct kvm *kvm;
spinlock_t intx_lock;
+ spinlock_t intx_mask_lock;
char irq_name[32];
struct pci_saved_state *pci_saved_state;
};
@@ -651,11 +653,43 @@ static inline void kvm_guest_exit(void)
current->flags &= ~PF_VCPU;
}
+/*
+ * search_memslots() and __gfn_to_memslot() are here because they are
+ * used in non-modular code in arch/powerpc/kvm/book3s_hv_rm_mmu.c.
+ * gfn_to_memslot() itself isn't here as an inline because that would
+ * bloat other code too much.
+ */
+static inline struct kvm_memory_slot *
+search_memslots(struct kvm_memslots *slots, gfn_t gfn)
+{
+ struct kvm_memory_slot *memslot;
+
+ kvm_for_each_memslot(memslot, slots)
+ if (gfn >= memslot->base_gfn &&
+ gfn < memslot->base_gfn + memslot->npages)
+ return memslot;
+
+ return NULL;
+}
+
+static inline struct kvm_memory_slot *
+__gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn)
+{
+ return search_memslots(slots, gfn);
+}
+
static inline int memslot_id(struct kvm *kvm, gfn_t gfn)
{
return gfn_to_memslot(kvm, gfn)->id;
}
+static inline gfn_t gfn_to_index(gfn_t gfn, gfn_t base_gfn, int level)
+{
+ /* KVM_HPAGE_GFN_SHIFT(PT_PAGE_TABLE_LEVEL) must be 0. */
+ return (gfn >> KVM_HPAGE_GFN_SHIFT(level)) -
+ (base_gfn >> KVM_HPAGE_GFN_SHIFT(level));
+}
+
static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot,
gfn_t gfn)
{
@@ -702,12 +736,16 @@ static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_se
if (unlikely(vcpu->kvm->mmu_notifier_count))
return 1;
/*
- * Both reads happen under the mmu_lock and both values are
- * modified under mmu_lock, so there's no need of smb_rmb()
- * here in between, otherwise mmu_notifier_count should be
- * read before mmu_notifier_seq, see
- * mmu_notifier_invalidate_range_end write side.
+ * Ensure the read of mmu_notifier_count happens before the read
+ * of mmu_notifier_seq. This interacts with the smp_wmb() in
+ * mmu_notifier_invalidate_range_end to make sure that the caller
+ * either sees the old (non-zero) value of mmu_notifier_count or
+ * the new (incremented) value of mmu_notifier_seq.
+ * PowerPC Book3s HV KVM calls this under a per-page lock
+ * rather than under kvm->mmu_lock, for scalability, so
+ * can't rely on kvm->mmu_lock to keep things ordered.
*/
+ smp_rmb();
if (vcpu->kvm->mmu_notifier_seq != mmu_seq)
return 1;
return 0;
@@ -770,6 +808,13 @@ static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
{
return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id;
}
+
+bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu);
+
+#else
+
+static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; }
+
#endif
#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT