Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:

 - x86 bugfixes: APIC, nested virtualization, IOAPIC

 - PPC bugfix: HPT guests on a POWER9 radix host

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (26 commits)
  KVM: Let KVM_SET_SIGNAL_MASK work as advertised
  KVM: VMX: Fix vmx->nested freeing when no SMI handler
  KVM: VMX: Fix rflags cache during vCPU reset
  KVM: X86: Fix softlockup when get the current kvmclock
  KVM: lapic: Fixup LDR on load in x2apic
  KVM: lapic: Split out x2apic ldr calculation
  KVM: PPC: Book3S HV: Fix migration and HPT resizing of HPT guests on radix hosts
  KVM: vmx: use X86_CR4_UMIP and X86_FEATURE_UMIP
  KVM: x86: Fix CPUID function for word 6 (80000001_ECX)
  KVM: nVMX: Fix vmx_check_nested_events() return value in case an event was reinjected to L2
  KVM: x86: ioapic: Preserve read-only values in the redirection table
  KVM: x86: ioapic: Clear Remote IRR when entry is switched to edge-triggered
  KVM: x86: ioapic: Remove redundant check for Remote IRR in ioapic_set_irq
  KVM: x86: ioapic: Don't fire level irq when Remote IRR set
  KVM: x86: ioapic: Fix level-triggered EOI and IOAPIC reconfigure race
  KVM: x86: inject exceptions produced by x86_decode_insn
  KVM: x86: Allow suppressing prints on RDMSR/WRMSR of unhandled MSRs
  KVM: x86: fix em_fxstor() sleeping while in atomic
  KVM: nVMX: Fix mmu context after VMLAUNCH/VMRESUME failure
  KVM: nVMX: Validate the IA32_BNDCFGS on nested VM-entry
  ...

4 files changed, 27 insertions, 21 deletions

diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index 96753f3aac6d..941c2a3f231b 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -180,6 +180,7 @@ extern void kvm_spapr_tce_release_iommu_group(struct kvm *kvm,
 		struct iommu_group *grp);
 extern int kvmppc_switch_mmu_to_hpt(struct kvm *kvm);
 extern int kvmppc_switch_mmu_to_radix(struct kvm *kvm);
+extern void kvmppc_setup_partition_table(struct kvm *kvm);
 
 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
 				struct kvm_create_spapr_tce_64 *args);
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index 235319c2574e..966097232d21 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -1238,8 +1238,9 @@ static unsigned long resize_hpt_rehash_hpte(struct kvm_resize_hpt *resize,
 	unsigned long vpte, rpte, guest_rpte;
 	int ret;
 	struct revmap_entry *rev;
-	unsigned long apsize, psize, avpn, pteg, hash;
+	unsigned long apsize, avpn, pteg, hash;
 	unsigned long new_idx, new_pteg, replace_vpte;
+	int pshift;
 
 	hptep = (__be64 *)(old->virt + (idx << 4));
 
@@ -1298,8 +1299,8 @@ static unsigned long resize_hpt_rehash_hpte(struct kvm_resize_hpt *resize,
 		goto out;
 
 	rpte = be64_to_cpu(hptep[1]);
-	psize = hpte_base_page_size(vpte, rpte);
-	avpn = HPTE_V_AVPN_VAL(vpte) & ~((psize - 1) >> 23);
+	pshift = kvmppc_hpte_base_page_shift(vpte, rpte);
+	avpn = HPTE_V_AVPN_VAL(vpte) & ~(((1ul << pshift) - 1) >> 23);
 	pteg = idx / HPTES_PER_GROUP;
 	if (vpte & HPTE_V_SECONDARY)
 		pteg = ~pteg;
@@ -1311,20 +1312,20 @@ static unsigned long resize_hpt_rehash_hpte(struct kvm_resize_hpt *resize,
 		offset = (avpn & 0x1f) << 23;
 		vsid = avpn >> 5;
 		/* We can find more bits from the pteg value */
-		if (psize < (1ULL << 23))
-			offset |= ((vsid ^ pteg) & old_hash_mask) * psize;
+		if (pshift < 23)
+			offset |= ((vsid ^ pteg) & old_hash_mask) << pshift;
 
-		hash = vsid ^ (offset / psize);
+		hash = vsid ^ (offset >> pshift);
 	} else {
 		unsigned long offset, vsid;
 
 		/* We only have 40 - 23 bits of seg_off in avpn */
 		offset = (avpn & 0x1ffff) << 23;
 		vsid = avpn >> 17;
-		if (psize < (1ULL << 23))
-			offset |= ((vsid ^ (vsid << 25) ^ pteg) & old_hash_mask) * psize;
+		if (pshift < 23)
+			offset |= ((vsid ^ (vsid << 25) ^ pteg) & old_hash_mask) << pshift;
 
-		hash = vsid ^ (vsid << 25) ^ (offset / psize);
+		hash = vsid ^ (vsid << 25) ^ (offset >> pshift);
 	}
 
 	new_pteg = hash & new_hash_mask;
@@ -1801,6 +1802,7 @@ static ssize_t kvm_htab_write(struct file *file, const char __user *buf,
 	ssize_t nb;
 	long int err, ret;
 	int mmu_ready;
+	int pshift;
 
 	if (!access_ok(VERIFY_READ, buf, count))
 		return -EFAULT;
@@ -1855,6 +1857,9 @@ static ssize_t kvm_htab_write(struct file *file, const char __user *buf,
 			err = -EINVAL;
 			if (!(v & HPTE_V_VALID))
 				goto out;
+			pshift = kvmppc_hpte_base_page_shift(v, r);
+			if (pshift <= 0)
+				goto out;
 			lbuf += 2;
 			nb += HPTE_SIZE;
 
@@ -1869,14 +1874,18 @@ static ssize_t kvm_htab_write(struct file *file, const char __user *buf,
 				goto out;
 			}
 			if (!mmu_ready && is_vrma_hpte(v)) {
-				unsigned long psize = hpte_base_page_size(v, r);
-				unsigned long senc = slb_pgsize_encoding(psize);
-				unsigned long lpcr;
+				unsigned long senc, lpcr;
 
+				senc = slb_pgsize_encoding(1ul << pshift);
 				kvm->arch.vrma_slb_v = senc | SLB_VSID_B_1T |
 					(VRMA_VSID << SLB_VSID_SHIFT_1T);
-				lpcr = senc << (LPCR_VRMASD_SH - 4);
-				kvmppc_update_lpcr(kvm, lpcr, LPCR_VRMASD);
+				if (!cpu_has_feature(CPU_FTR_ARCH_300)) {
+					lpcr = senc << (LPCR_VRMASD_SH - 4);
+					kvmppc_update_lpcr(kvm, lpcr,
+							   LPCR_VRMASD);
+				} else {
+					kvmppc_setup_partition_table(kvm);
+				}
 				mmu_ready = 1;
 			}
 			++i;
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 79ea3d9269db..2d46037ce936 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -120,7 +120,6 @@ MODULE_PARM_DESC(h_ipi_redirect, "Redirect H_IPI wakeup to a free host core");
 
 static void kvmppc_end_cede(struct kvm_vcpu *vcpu);
 static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu *vcpu);
-static void kvmppc_setup_partition_table(struct kvm *kvm);
 
 static inline struct kvm_vcpu *next_runnable_thread(struct kvmppc_vcore *vc,
 		int *ip)
@@ -3574,7 +3573,7 @@ static void kvmppc_mmu_destroy_hv(struct kvm_vcpu *vcpu)
 	return;
 }
 
-static void kvmppc_setup_partition_table(struct kvm *kvm)
+void kvmppc_setup_partition_table(struct kvm *kvm)
 {
 	unsigned long dw0, dw1;
 
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 6b6c53c42ac9..1915e86cef6f 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -1407,7 +1407,6 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
 {
 	int r;
-	sigset_t sigsaved;
 
 	if (vcpu->mmio_needed) {
 		vcpu->mmio_needed = 0;
@@ -1448,16 +1447,14 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
 #endif
 	}
 
-	if (vcpu->sigset_active)
-		sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
+	kvm_sigset_activate(vcpu);
 
 	if (run->immediate_exit)
 		r = -EINTR;
 	else
 		r = kvmppc_vcpu_run(run, vcpu);
 
-	if (vcpu->sigset_active)
-		sigprocmask(SIG_SETMASK, &sigsaved, NULL);
+	kvm_sigset_deactivate(vcpu);
 
 	return r;
 }