- Update to 3.4-rc7.

[linux-flexiantxendom0-3.2.10.git] / arch / x86 / kvm / x86.c

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 490a1b1..7e0f8e1 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -57,6 +57,7 @@
 #include <asm/mtrr.h>
 #include <asm/mce.h>
 #include <asm/i387.h>
+#include <asm/fpu-internal.h> /* Ugh! */
 #include <asm/xcr.h>
 #include <asm/pvclock.h>
 #include <asm/div64.h>
@@ -1025,7 +1026,7 @@ void kvm_write_tsc(struct kvm_vcpu *vcpu, u64 data)
        struct kvm *kvm = vcpu->kvm;
        u64 offset, ns, elapsed;
        unsigned long flags;
-       s64 nsdiff;
+       s64 usdiff;
 
        raw_spin_lock_irqsave(&kvm->arch.tsc_write_lock, flags);
        offset = kvm_x86_ops->compute_tsc_offset(vcpu, data);
@@ -1033,18 +1034,19 @@ void kvm_write_tsc(struct kvm_vcpu *vcpu, u64 data)
        elapsed = ns - kvm->arch.last_tsc_nsec;
 
        /* n.b - signed multiplication and division required */
-       nsdiff = data - kvm->arch.last_tsc_write;
+       usdiff = data - kvm->arch.last_tsc_write;
 #ifdef CONFIG_X86_64
-       nsdiff = (nsdiff * 1000) / vcpu->arch.virtual_tsc_khz;
+       usdiff = (usdiff * 1000) / vcpu->arch.virtual_tsc_khz;
 #else
        /* do_div() only does unsigned */
        asm("idivl %2; xor %%edx, %%edx"
-           : "=A"(nsdiff)
-           : "A"(nsdiff * 1000), "rm"(vcpu->arch.virtual_tsc_khz));
+           : "=A"(usdiff)
+           : "A"(usdiff * 1000), "rm"(vcpu->arch.virtual_tsc_khz));
 #endif
-       nsdiff -= elapsed;
-       if (nsdiff < 0)
-               nsdiff = -nsdiff;
+       do_div(elapsed, 1000);
+       usdiff -= elapsed;
+       if (usdiff < 0)
+               usdiff = -usdiff;
 
        /*
         * Special case: TSC write with a small delta (1 second) of virtual
@@ -1056,7 +1058,7 @@ void kvm_write_tsc(struct kvm_vcpu *vcpu, u64 data)
         * compensation code attempt to catch up if we fall behind, but
         * it's better to try to match offsets from the beginning.
          */
-       if (nsdiff < NSEC_PER_SEC &&
+       if (usdiff < USEC_PER_SEC &&
            vcpu->arch.virtual_tsc_khz == kvm->arch.last_tsc_khz) {
                if (!check_tsc_unstable()) {
                        offset = kvm->arch.cur_tsc_offset;
@@ -1206,12 +1208,12 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
         */
        vcpu->hv_clock.version += 2;
 
-       shared_kaddr = kmap_atomic(vcpu->time_page, KM_USER0);
+       shared_kaddr = kmap_atomic(vcpu->time_page);
 
        memcpy(shared_kaddr + vcpu->time_offset, &vcpu->hv_clock,
               sizeof(vcpu->hv_clock));
 
-       kunmap_atomic(shared_kaddr, KM_USER0);
+       kunmap_atomic(shared_kaddr);
 
        mark_page_dirty(v->kvm, vcpu->time >> PAGE_SHIFT);
        return 0;
@@ -1547,6 +1549,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
        case MSR_K7_HWCR:
                data &= ~(u64)0x40;     /* ignore flush filter disable */
                data &= ~(u64)0x100;    /* ignore ignne emulation enable */
+               data &= ~(u64)0x8;      /* ignore TLB cache disable */
                if (data != 0) {
                        pr_unimpl(vcpu, "unimplemented HWCR wrmsr: 0x%llx\n",
                                data);
@@ -1579,6 +1582,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
        case MSR_VM_HSAVE_PA:
        case MSR_AMD64_PATCH_LOADER:
                break;
+       case MSR_NHM_SNB_PKG_CST_CFG_CTL: /* 0xe2 */
        case 0x200 ... 0x2ff:
                return set_msr_mtrr(vcpu, msr, data);
        case MSR_IA32_APICBASE:
@@ -1901,6 +1905,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
        case MSR_K8_INT_PENDING_MSG:
        case MSR_AMD64_NB_CFG:
        case MSR_FAM10H_MMIO_CONF_BASE:
+       case MSR_NHM_SNB_PKG_CST_CFG_CTL: /* 0xe2 */
                data = 0;
                break;
        case MSR_P6_PERFCTR0:
@@ -2143,6 +2148,7 @@ int kvm_dev_ioctl_check_extension(long ext)
        case KVM_CAP_XSAVE:
        case KVM_CAP_ASYNC_PF:
        case KVM_CAP_GET_TSC_KHZ:
+       case KVM_CAP_PCI_2_3:
                r = 1;
                break;
        case KVM_CAP_COALESCED_MMIO:
@@ -3199,6 +3205,9 @@ long kvm_arch_vm_ioctl(struct file *filp,
                r = -EEXIST;
                if (kvm->arch.vpic)
                        goto create_irqchip_unlock;
+               r = -EINVAL;
+               if (atomic_read(&kvm->online_vcpus))
+                       goto create_irqchip_unlock;
                r = -ENOMEM;
                vpic = kvm_create_pic(kvm);
                if (vpic) {
@@ -3915,7 +3924,7 @@ static int emulator_cmpxchg_emulated(struct x86_emulate_ctxt *ctxt,
                goto emul_write;
        }
 
-       kaddr = kmap_atomic(page, KM_USER0);
+       kaddr = kmap_atomic(page);
        kaddr += offset_in_page(gpa);
        switch (bytes) {
        case 1:
@@ -3933,7 +3942,7 @@ static int emulator_cmpxchg_emulated(struct x86_emulate_ctxt *ctxt,
        default:
                BUG();
        }
-       kunmap_atomic(kaddr, KM_USER0);
+       kunmap_atomic(kaddr);
        kvm_release_page_dirty(page);
 
        if (!exchanged)
@@ -4129,6 +4138,11 @@ static int emulator_set_cr(struct x86_emulate_ctxt *ctxt, int cr, ulong val)
        return res;
 }
 
+static void emulator_set_rflags(struct x86_emulate_ctxt *ctxt, ulong val)
+{
+       kvm_set_rflags(emul_to_vcpu(ctxt), val);
+}
+
 static int emulator_get_cpl(struct x86_emulate_ctxt *ctxt)
 {
        return kvm_x86_ops->get_cpl(emul_to_vcpu(ctxt));
@@ -4310,6 +4324,7 @@ static struct x86_emulate_ops emulate_ops = {
        .set_idt             = emulator_set_idt,
        .get_cr              = emulator_get_cr,
        .set_cr              = emulator_set_cr,
+       .set_rflags          = emulator_set_rflags,
        .cpl                 = emulator_get_cpl,
        .get_dr              = emulator_get_dr,
        .set_dr              = emulator_set_dr,
@@ -6101,6 +6116,11 @@ void kvm_arch_check_processor_compat(void *rtn)
        kvm_x86_ops->check_processor_compatibility(rtn);
 }
 
+bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu)
+{
+       return irqchip_in_kernel(vcpu->kvm) == (vcpu->arch.apic != NULL);
+}
+
 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
 {
        struct page *page;
@@ -6318,13 +6338,11 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
                if (npages && !old.rmap) {
                        unsigned long userspace_addr;
 
-                       down_write(&current->mm->mmap_sem);
-                       userspace_addr = do_mmap(NULL, 0,
+                       userspace_addr = vm_mmap(NULL, 0,
                                                 npages * PAGE_SIZE,
                                                 PROT_READ | PROT_WRITE,
                                                 map_flags,
                                                 0);
-                       up_write(&current->mm->mmap_sem);
 
                        if (IS_ERR((void *)userspace_addr))
                                return PTR_ERR((void *)userspace_addr);
@@ -6348,10 +6366,8 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
        if (!user_alloc && !old.user_alloc && old.rmap && !npages) {
                int ret;
 
-               down_write(&current->mm->mmap_sem);
-               ret = do_munmap(current->mm, old.userspace_addr,
+               ret = vm_munmap(old.userspace_addr,
                                old.npages * PAGE_SIZE);
-               up_write(&current->mm->mmap_sem);
                if (ret < 0)
                        printk(KERN_WARNING
                               "kvm_vm_ioctl_set_memory_region: "
@@ -6567,6 +6583,7 @@ void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
                kvm_inject_page_fault(vcpu, &fault);
        }
        vcpu->arch.apf.halted = false;
+       vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
 }
 
 bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu)