Pull asus into release branch

[pandora-kernel.git] / drivers / kvm / vmx.c

diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index ca79e59..fbbf9d6 100644 (file)
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -204,7 +204,7 @@ static void vmcs_write64(unsigned long field, u64 value)
  * Switches to specified vcpu, until a matching vcpu_put(), but assumes
  * vcpu mutex is already taken.
  */
-static struct kvm_vcpu *vmx_vcpu_load(struct kvm_vcpu *vcpu)
+static void vmx_vcpu_load(struct kvm_vcpu *vcpu)
 {
        u64 phys_addr = __pa(vcpu->vmcs);
        int cpu;
@@ -242,7 +242,6 @@ static struct kvm_vcpu *vmx_vcpu_load(struct kvm_vcpu *vcpu)
                rdmsrl(MSR_IA32_SYSENTER_ESP, sysenter_esp);
                vmcs_writel(HOST_IA32_SYSENTER_ESP, sysenter_esp); /* 22.2.3 */
        }
-       return vcpu;
 }
 
 static void vmx_vcpu_put(struct kvm_vcpu *vcpu)
@@ -372,10 +371,10 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
                data = vmcs_read32(GUEST_SYSENTER_CS);
                break;
        case MSR_IA32_SYSENTER_EIP:
-               data = vmcs_read32(GUEST_SYSENTER_EIP);
+               data = vmcs_readl(GUEST_SYSENTER_EIP);
                break;
        case MSR_IA32_SYSENTER_ESP:
-               data = vmcs_read32(GUEST_SYSENTER_ESP);
+               data = vmcs_readl(GUEST_SYSENTER_ESP);
                break;
        default:
                msr = find_msr_entry(vcpu, msr_index);
@@ -413,10 +412,10 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
                vmcs_write32(GUEST_SYSENTER_CS, data);
                break;
        case MSR_IA32_SYSENTER_EIP:
-               vmcs_write32(GUEST_SYSENTER_EIP, data);
+               vmcs_writel(GUEST_SYSENTER_EIP, data);
                break;
        case MSR_IA32_SYSENTER_ESP:
-               vmcs_write32(GUEST_SYSENTER_ESP, data);
+               vmcs_writel(GUEST_SYSENTER_ESP, data);
                break;
        case MSR_IA32_TIME_STAMP_COUNTER:
                guest_write_tsc(data);
@@ -619,7 +618,7 @@ static void fix_pmode_dataseg(int seg, struct kvm_save_segment *save)
 {
        struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
 
-       if (vmcs_readl(sf->base) == save->base) {
+       if (vmcs_readl(sf->base) == save->base && (save->base & AR_S_MASK)) {
                vmcs_write16(sf->selector, save->selector);
                vmcs_writel(sf->base, save->base);
                vmcs_write32(sf->limit, save->limit);
@@ -1659,16 +1658,8 @@ static int handle_halt(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 
 static int handle_vmcall(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 {
-       kvm_run->exit_reason = KVM_EXIT_DEBUG;
-       printk(KERN_DEBUG "got vmcall at RIP %08lx\n", vmcs_readl(GUEST_RIP));
-       printk(KERN_DEBUG "vmcall params: %08lx, %08lx, %08lx, %08lx\n",
-               vcpu->regs[VCPU_REGS_RAX],
-               vcpu->regs[VCPU_REGS_RCX],
-               vcpu->regs[VCPU_REGS_RDX],
-               vcpu->regs[VCPU_REGS_RBP]);
-       vcpu->regs[VCPU_REGS_RAX] = 0;
        vmcs_writel(GUEST_RIP, vmcs_readl(GUEST_RIP)+3);
-       return 1;
+       return kvm_hypercall(vcpu, kvm_run);
 }
 
 /*
@@ -1897,6 +1888,27 @@ again:
                [cr2]"i"(offsetof(struct kvm_vcpu, cr2))
              : "cc", "memory" );
 
+       /*
+        * Reload segment selectors ASAP. (it's needed for a functional
+        * kernel: x86 relies on having __KERNEL_PDA in %fs and x86_64
+        * relies on having 0 in %gs for the CPU PDA to work.)
+        */
+       if (fs_gs_ldt_reload_needed) {
+               load_ldt(ldt_sel);
+               load_fs(fs_sel);
+               /*
+                * If we have to reload gs, we must take care to
+                * preserve our gs base.
+                */
+               local_irq_disable();
+               load_gs(gs_sel);
+#ifdef CONFIG_X86_64
+               wrmsrl(MSR_GS_BASE, vmcs_readl(HOST_GS_BASE));
+#endif
+               local_irq_enable();
+
+               reload_tss();
+       }
        ++kvm_stat.exits;
 
        save_msrs(vcpu->guest_msrs, NR_BAD_MSRS);
@@ -1914,22 +1926,6 @@ again:
                kvm_run->exit_reason = vmcs_read32(VM_INSTRUCTION_ERROR);
                r = 0;
        } else {
-               if (fs_gs_ldt_reload_needed) {
-                       load_ldt(ldt_sel);
-                       load_fs(fs_sel);
-                       /*
-                        * If we have to reload gs, we must take care to
-                        * preserve our gs base.
-                        */
-                       local_irq_disable();
-                       load_gs(gs_sel);
-#ifdef CONFIG_X86_64
-                       wrmsrl(MSR_GS_BASE, vmcs_readl(HOST_GS_BASE));
-#endif
-                       local_irq_enable();
-
-                       reload_tss();
-               }
                /*
                 * Profile KVM exit RIPs:
                 */