Merge tag 'kvm-3.6-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Avi Kivity:
 "Highlights include
  - full big real mode emulation on pre-Westmere Intel hosts (can be
    disabled with emulate_invalid_guest_state=0)
  - relatively small ppc and s390 updates
  - PCID/INVPCID support in guests
  - EOI avoidance; 3.6 guests should perform better on 3.6 hosts on
    interrupt intensive workloads)
  - Lockless write faults during live migration
  - EPT accessed/dirty bits support for new Intel processors"

Fix up conflicts in:
 - Documentation/virtual/kvm/api.txt:

   Stupid subchapter numbering, added next to each other.

 - arch/powerpc/kvm/booke_interrupts.S:

   PPC asm changes clashing with the KVM fixes

 - arch/s390/include/asm/sigp.h, arch/s390/kvm/sigp.c:

   Duplicated commits through the kvm tree and the s390 tree, with
   subsequent edits in the KVM tree.

* tag 'kvm-3.6-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (93 commits)
  KVM: fix race with level interrupts
  x86, hyper: fix build with !CONFIG_KVM_GUEST
  Revert "apic: fix kvm build on UP without IOAPIC"
  KVM guest: switch to apic_set_eoi_write, apic_write
  apic: add apic_set_eoi_write for PV use
  KVM: VMX: Implement PCID/INVPCID for guests with EPT
  KVM: Add x86_hyper_kvm to complete detect_hypervisor_platform check
  KVM: PPC: Critical interrupt emulation support
  KVM: PPC: e500mc: Fix tlbilx emulation for 64-bit guests
  KVM: PPC64: booke: Set interrupt computation mode for 64-bit host
  KVM: PPC: bookehv: Add ESR flag to Data Storage Interrupt
  KVM: PPC: bookehv64: Add support for std/ld emulation.
  booke: Added crit/mc exception handler for e500v2
  booke/bookehv: Add host crit-watchdog exception support
  KVM: MMU: document mmu-lock and fast page fault
  KVM: MMU: fix kvm_mmu_pagetable_walk tracepoint
  KVM: MMU: trace fast page fault
  KVM: MMU: fast path of handling guest page fault
  KVM: MMU: introduce SPTE_MMU_WRITEABLE bit
  KVM: MMU: fold tlb flush judgement into mmu_spte_update
  ...

3 files changed, 26 insertions, 11 deletions

diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 09f2b3aa2da7..2ce09aa7d3b3 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -617,6 +617,7 @@ struct kvm_ppc_smmu_info {
 #define KVM_CAP_SIGNAL_MSI 77
 #define KVM_CAP_PPC_GET_SMMU_INFO 78
 #define KVM_CAP_S390_COW 79
+#define KVM_CAP_PPC_ALLOC_HTAB 80
 
 #ifdef KVM_CAP_IRQ_ROUTING
 
@@ -828,6 +829,8 @@ struct kvm_s390_ucas_mapping {
 #define KVM_SIGNAL_MSI            _IOW(KVMIO,  0xa5, struct kvm_msi)
 /* Available with KVM_CAP_PPC_GET_SMMU_INFO */
 #define KVM_PPC_GET_SMMU_INFO	  _IOR(KVMIO,  0xa6, struct kvm_ppc_smmu_info)
+/* Available with KVM_CAP_PPC_ALLOC_HTAB */
+#define KVM_PPC_ALLOCATE_HTAB	  _IOWR(KVMIO, 0xa7, __u32)
 
 /*
  * ioctls for vcpu fds
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 96c158a37d3e..b70b48b01098 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -306,7 +306,7 @@ struct kvm {
 	struct hlist_head irq_ack_notifier_list;
 #endif
 
-#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
+#if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
 	struct mmu_notifier mmu_notifier;
 	unsigned long mmu_notifier_seq;
 	long mmu_notifier_count;
@@ -314,13 +314,19 @@ struct kvm {
 	long tlbs_dirty;
 };
 
-/* The guest did something we don't support. */
-#define pr_unimpl(vcpu, fmt, ...)					\
-	pr_err_ratelimited("kvm: %i: cpu%i " fmt,			\
-			   current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__)
+#define kvm_err(fmt, ...) \
+	pr_err("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
+#define kvm_info(fmt, ...) \
+	pr_info("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
+#define kvm_debug(fmt, ...) \
+	pr_debug("kvm [%i]: " fmt, task_pid_nr(current), ## __VA_ARGS__)
+#define kvm_pr_unimpl(fmt, ...) \
+	pr_err_ratelimited("kvm [%i]: " fmt, \
+			   task_tgid_nr(current), ## __VA_ARGS__)
 
-#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
-#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
+/* The guest did something we don't support. */
+#define vcpu_unimpl(vcpu, fmt, ...)					\
+	kvm_pr_unimpl("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
 
 static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
 {
@@ -535,6 +541,9 @@ int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu);
 
 void kvm_free_physmem(struct kvm *kvm);
 
+void *kvm_kvzalloc(unsigned long size);
+void kvm_kvfree(const void *addr);
+
 #ifndef __KVM_HAVE_ARCH_VM_ALLOC
 static inline struct kvm *kvm_arch_alloc_vm(void)
 {
@@ -771,7 +780,7 @@ struct kvm_stats_debugfs_item {
 extern struct kvm_stats_debugfs_item debugfs_entries[];
 extern struct dentry *kvm_debugfs_dir;
 
-#ifdef KVM_ARCH_WANT_MMU_NOTIFIER
+#if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER)
 static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_seq)
 {
 	if (unlikely(vcpu->kvm->mmu_notifier_count))
@@ -793,7 +802,7 @@ static inline int mmu_notifier_retry(struct kvm_vcpu *vcpu, unsigned long mmu_se
 }
 #endif
 
-#ifdef CONFIG_HAVE_KVM_IRQCHIP
+#ifdef KVM_CAP_IRQ_ROUTING
 
 #define KVM_MAX_IRQ_ROUTES 1024
 
diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h
index 46e3cd8e197a..7ef9e759f499 100644
--- a/include/trace/events/kvm.h
+++ b/include/trace/events/kvm.h
@@ -13,7 +13,8 @@
 	ERSN(DEBUG), ERSN(HLT), ERSN(MMIO), ERSN(IRQ_WINDOW_OPEN),	\
 	ERSN(SHUTDOWN), ERSN(FAIL_ENTRY), ERSN(INTR), ERSN(SET_TPR),	\
 	ERSN(TPR_ACCESS), ERSN(S390_SIEIC), ERSN(S390_RESET), ERSN(DCR),\
-	ERSN(NMI), ERSN(INTERNAL_ERROR), ERSN(OSI)
+	ERSN(NMI), ERSN(INTERNAL_ERROR), ERSN(OSI), ERSN(PAPR_HCALL),	\
+	ERSN(S390_UCONTROL)
 
 TRACE_EVENT(kvm_userspace_exit,
 	    TP_PROTO(__u32 reason, int errno),
@@ -36,7 +37,7 @@ TRACE_EVENT(kvm_userspace_exit,
 		  __entry->errno < 0 ? -__entry->errno : __entry->reason)
 );
 
-#if defined(__KVM_HAVE_IOAPIC)
+#if defined(__KVM_HAVE_IRQ_LINE)
 TRACE_EVENT(kvm_set_irq,
 	TP_PROTO(unsigned int gsi, int level, int irq_source_id),
 	TP_ARGS(gsi, level, irq_source_id),
@@ -56,7 +57,9 @@ TRACE_EVENT(kvm_set_irq,
 	TP_printk("gsi %u level %d source %d",
 		  __entry->gsi, __entry->level, __entry->irq_source_id)
 );
+#endif
 
+#if defined(__KVM_HAVE_IOAPIC)
 #define kvm_deliver_mode		\
 	{0x0, "Fixed"},			\
 	{0x1, "LowPrio"},		\