Merge commit 'origin/next' into kvm-ppc-next

23 files changed, 803 insertions, 166 deletions

diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index 09905cbcbb0b..c2534c300a45 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -219,19 +219,6 @@ allocation of vcpu ids.  For example, if userspace wants
 single-threaded guest vcpus, it should make all vcpu ids be a multiple
 of the number of vcpus per vcore.
 
-On powerpc using book3s_hv mode, the vcpus are mapped onto virtual
-threads in one or more virtual CPU cores.  (This is because the
-hardware requires all the hardware threads in a CPU core to be in the
-same partition.)  The KVM_CAP_PPC_SMT capability indicates the number
-of vcpus per virtual core (vcore).  The vcore id is obtained by
-dividing the vcpu id by the number of vcpus per vcore.  The vcpus in a
-given vcore will always be in the same physical core as each other
-(though that might be a different physical core from time to time).
-Userspace can control the threading (SMT) mode of the guest by its
-allocation of vcpu ids.  For example, if userspace wants
-single-threaded guest vcpus, it should make all vcpu ids be a multiple
-of the number of vcpus per vcore.
-
 For virtual cpus that have been created with S390 user controlled virtual
 machines, the resulting vcpu fd can be memory mapped at page offset
 KVM_S390_SIE_PAGE_OFFSET in order to obtain a memory map of the virtual
@@ -874,12 +861,12 @@ It is recommended that the lower 21 bits of guest_phys_addr and userspace_addr
 be identical.  This allows large pages in the guest to be backed by large
 pages in the host.
 
-The flags field supports two flag, KVM_MEM_LOG_DIRTY_PAGES, which instructs
-kvm to keep track of writes to memory within the slot.  See KVM_GET_DIRTY_LOG
-ioctl.  The KVM_CAP_READONLY_MEM capability indicates the availability of the
-KVM_MEM_READONLY flag.  When this flag is set for a memory region, KVM only
-allows read accesses.  Writes will be posted to userspace as KVM_EXIT_MMIO
-exits.
+The flags field supports two flags: KVM_MEM_LOG_DIRTY_PAGES and
+KVM_MEM_READONLY.  The former can be set to instruct KVM to keep track of
+writes to memory within the slot.  See KVM_GET_DIRTY_LOG ioctl to know how to
+use it.  The latter can be set, if KVM_CAP_READONLY_MEM capability allows it,
+to make a new slot read-only.  In this case, writes to this memory will be
+posted to userspace as KVM_EXIT_MMIO exits.
 
 When the KVM_CAP_SYNC_MMU capability is available, changes in the backing of
 the memory region are automatically reflected into the guest.  For example, an
diff --git a/arch/ia64/kvm/lapic.h b/arch/ia64/kvm/lapic.h
index c5f92a926a9a..c3e2935b6db4 100644
--- a/arch/ia64/kvm/lapic.h
+++ b/arch/ia64/kvm/lapic.h
@@ -27,4 +27,10 @@ int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq);
 #define kvm_apic_present(x) (true)
 #define kvm_lapic_enabled(x) (true)
 
+static inline bool kvm_apic_vid_enabled(void)
+{
+        /* IA64 has no apicv supporting, do nothing here */
+        return false;
+}
+
 #endif
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 5b01f0953900..4377d1886631 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -770,6 +770,14 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr)
         } else
                 prefix = 0;
 
+        /*
+         * The guest FPRS and ACRS are in the host FPRS/ACRS due to the lazy
+         * copying in vcpu load/put. Lets update our copies before we save
+         * it into the save area
+         */
+        save_fp_regs(&vcpu->arch.guest_fpregs);
+        save_access_regs(vcpu->run->s.regs.acrs);
+
         if (__guestcopy(vcpu, addr + offsetof(struct save_area, fp_regs),
                         vcpu->arch.guest_fpregs.fprs, 128, prefix))
                 return -EFAULT;
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index 3e05deff21b6..4d89d64a8161 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -67,8 +67,8 @@ static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
 
 static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu)
 {
-        int base2 = vcpu->arch.sie_block->ipb >> 28;
-        int disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
+        u32 base2 = vcpu->arch.sie_block->ipb >> 28;
+        u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
 
         return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
 }
@@ -76,10 +76,10 @@ static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu)
 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
                                               u64 *address1, u64 *address2)
 {
-        int base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
-        int disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
-        int base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
-        int disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
+        u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
+        u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
+        u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
+        u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
 
         *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
         *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
@@ -87,17 +87,20 @@ static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
 
 static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)
 {
-        int base2 = vcpu->arch.sie_block->ipb >> 28;
-        int disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
+        u32 base2 = vcpu->arch.sie_block->ipb >> 28;
+        u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
                         ((vcpu->arch.sie_block->ipb & 0xff00) << 4);
+        /* The displacement is a 20bit _SIGNED_ value */
+        if (disp2 & 0x80000)
+                disp2+=0xfff00000;
 
-        return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
+        return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
 }
 
 static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu)
 {
-        int base2 = vcpu->arch.sie_block->ipb >> 28;
-        int disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
+        u32 base2 = vcpu->arch.sie_block->ipb >> 28;
+        u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
 
         return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
 }
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 77d56a4ba89c..635a74d22409 100644
--- a/