Merge tag 'kvm-4.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Radim Krčmář:
 "All architectures:
   - move `make kvmconfig` stubs from x86
   - use 64 bits for debugfs stats

  ARM:
   - Important fixes for not using an in-kernel irqchip
   - handle SError exceptions and present them to guests if appropriate
   - proxying of GICV access at EL2 if guest mappings are unsafe
   - GICv3 on AArch32 on ARMv8
   - preparations for GICv3 save/restore, including ABI docs
   - cleanups and a bit of optimizations

  MIPS:
   - A couple of fixes in preparation for supporting MIPS EVA host
     kernels
   - MIPS SMP host & TLB invalidation fixes

  PPC:
   - Fix the bug which caused guests to falsely report lockups
   - other minor fixes
   - a small optimization

  s390:
   - Lazy enablement of runtime instrumentation
   - up to 255 CPUs for nested guests
   - rework of machine check deliver
   - cleanups and fixes

  x86:
   - IOMMU part of AMD's AVIC for vmexit-less interrupt delivery
   - Hyper-V TSC page
   - per-vcpu tsc_offset in debugfs
   - accelerated INS/OUTS in nVMX
   - cleanups and fixes"

* tag 'kvm-4.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (140 commits)
  KVM: MIPS: Drop dubious EntryHi optimisation
  KVM: MIPS: Invalidate TLB by regenerating ASIDs
  KVM: MIPS: Split kernel/user ASID regeneration
  KVM: MIPS: Drop other CPU ASIDs on guest MMU changes
  KVM: arm/arm64: vgic: Don't flush/sync without a working vgic
  KVM: arm64: Require in-kernel irqchip for PMU support
  KVM: PPC: Book3s PR: Allow access to unprivileged MMCR2 register
  KVM: PPC: Book3S PR: Support 64kB page size on POWER8E and POWER8NVL
  KVM: PPC: Book3S: Remove duplicate setting of the B field in tlbie
  KVM: PPC: BookE: Fix a sanity check
  KVM: PPC: Book3S HV: Take out virtual core piggybacking code
  KVM: PPC: Book3S: Treat VTB as a per-subcore register, not per-thread
  ARM: gic-v3: Work around definition of gic_write_bpr1
  KVM: nVMX: Fix the NMI IDT-vectoring handling
  KVM: VMX: Enable MSR-BASED TPR shadow even if APICv is inactive
  KVM: nVMX: Fix reload apic access page warning
  kvmconfig: add virtio-gpu to config fragment
  config: move x86 kvm_guest.config to a common location
  arm64: KVM: Remove duplicating init code for setting VMID
  ARM: KVM: Support vgic-v3
  ...

3 files changed, 54 insertions, 11 deletions

diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index 19b698e..002f092 100644
--- a/include/kvm/arm_vgic.h
+++ b/include/kvm/arm_vgic.h
@@ -20,9 +20,11 @@
 #include <linux/kvm.h>
 #include <linux/irqreturn.h>
 #include <linux/spinlock.h>
+#include <linux/static_key.h>
 #include <linux/types.h>
 #include <kvm/iodev.h>
 #include <linux/list.h>
+#include <linux/jump_label.h>
 
 #define VGIC_V3_MAX_CPUS	255
 #define VGIC_V2_MAX_CPUS	8
@@ -49,6 +51,9 @@ struct vgic_global {
 	/* Physical address of vgic virtual cpu interface */
 	phys_addr_t		vcpu_base;
 
+	/* GICV mapping */
+	void __iomem		*vcpu_base_va;
+
 	/* virtual control interface mapping */
 	void __iomem		*vctrl_base;
 
@@ -63,6 +68,9 @@ struct vgic_global {
 
 	/* Only needed for the legacy KVM_CREATE_IRQCHIP */
 	bool			can_emulate_gicv2;
+
+	/* GIC system register CPU interface */
+	struct static_key_false gicv3_cpuif;
 };
 
 extern struct vgic_global kvm_vgic_global_state;
@@ -217,7 +225,6 @@ struct vgic_v2_cpu_if {
 };
 
 struct vgic_v3_cpu_if {
-#ifdef CONFIG_KVM_ARM_VGIC_V3
 	u32		vgic_hcr;
 	u32		vgic_vmcr;
 	u32		vgic_sre;	/* Restored only, change ignored */
@@ -227,7 +234,6 @@ struct vgic_v3_cpu_if {
 	u32		vgic_ap0r[4];
 	u32		vgic_ap1r[4];
 	u64		vgic_lr[VGIC_V3_MAX_LRS];
-#endif
 };
 
 struct vgic_cpu {
@@ -265,6 +271,8 @@ struct vgic_cpu {
 	bool lpis_enabled;
 };
 
+extern struct static_key_false vgic_v2_cpuif_trap;
+
 int kvm_vgic_addr(struct kvm *kvm, unsigned long type, u64 *addr, bool write);
 void kvm_vgic_early_init(struct kvm *kvm);
 int kvm_vgic_create(struct kvm *kvm, u32 type);
@@ -294,13 +302,7 @@ bool kvm_vcpu_has_pending_irqs(struct kvm_vcpu *vcpu);
 void kvm_vgic_sync_hwstate(struct kvm_vcpu *vcpu);
 void kvm_vgic_flush_hwstate(struct kvm_vcpu *vcpu);
 
-#ifdef CONFIG_KVM_ARM_VGIC_V3
 void vgic_v3_dispatch_sgi(struct kvm_vcpu *vcpu, u64 reg);
-#else
-static inline void vgic_v3_dispatch_sgi(struct kvm_vcpu *vcpu, u64 reg)
-{
-}
-#endif
 
 /**
  * kvm_vgic_get_max_vcpus - Get the maximum number of VCPUs allowed by HW
diff --git a/include/linux/amd-iommu.h b/include/linux/amd-iommu.h
index 2b08e79..09751d3 100644
--- a/include/linux/amd-iommu.h
+++ b/include/linux/amd-iommu.h
@@ -22,6 +22,20 @@
 
 #include <linux/types.h>
 
+/*
+ * This is mainly used to communicate information back-and-forth
+ * between SVM and IOMMU for setting up and tearing down posted
+ * interrupt
+ */
+struct amd_iommu_pi_data {
+	u32 ga_tag;
+	u32 prev_ga_tag;
+	u64 base;
+	bool is_guest_mode;
+	struct vcpu_data *vcpu_data;
+	void *ir_data;
+};
+
 #ifdef CONFIG_AMD_IOMMU
 
 struct task_struct;
@@ -168,11 +182,34 @@ typedef void (*amd_iommu_invalidate_ctx)(struct pci_dev *pdev, int pasid);
 
 extern int amd_iommu_set_invalidate_ctx_cb(struct pci_dev *pdev,
 					   amd_iommu_invalidate_ctx cb);
-
-#else
+#else /* CONFIG_AMD_IOMMU */
 
 static inline int amd_iommu_detect(void) { return -ENODEV; }
 
-#endif
+#endif /* CONFIG_AMD_IOMMU */
+
+#if defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP)
+
+/* IOMMU AVIC Function */
+extern int amd_iommu_register_ga_log_notifier(int (*notifier)(u32));
+
+extern int
+amd_iommu_update_ga(int cpu, bool is_run, void *data);
+
+#else /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */
+
+static inline int
+amd_iommu_register_ga_log_notifier(int (*notifier)(u32))
+{
+	return 0;
+}
+
+static inline int
+amd_iommu_update_ga(int cpu, bool is_run, void *data)
+{
+	return 0;
+}
+
+#endif /* defined(CONFIG_AMD_IOMMU) && defined(CONFIG_IRQ_REMAP) */
 
 #endif /* _ASM_X86_AMD_IOMMU_H */
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 9c28b4d..01c0b9c 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -265,6 +265,7 @@ struct kvm_vcpu {
 #endif
 	bool preempted;
 	struct kvm_vcpu_arch arch;
+	struct dentry *debugfs_dentry;
 };
 
 static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
@@ -749,6 +750,9 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu);
 void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
 
+bool kvm_arch_has_vcpu_debugfs(void);
+int kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu);
+
 int kvm_arch_hardware_enable(void);
 void kvm_arch_hardware_disable(void);
 int kvm_arch_hardware_setup(void);