10 files changed, 57 insertions, 33 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ee2fb9d37745..f67e839f06c8 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -860,7 +860,7 @@ source "kernel/Kconfig.preempt"
 
 config X86_UP_APIC
         bool "Local APIC support on uniprocessors"
-        depends on X86_32 && !SMP && !X86_32_NON_STANDARD
+        depends on X86_32 && !SMP && !X86_32_NON_STANDARD && !PCI_MSI
         ---help---
           A local APIC (Advanced Programmable Interrupt Controller) is an
           integrated interrupt controller in the CPU. If you have a single-CPU
@@ -885,11 +885,11 @@ config X86_UP_IOAPIC
 
 config X86_LOCAL_APIC
         def_bool y
-        depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_APIC
+        depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_APIC || PCI_MSI
 
 config X86_IO_APIC
         def_bool y
-        depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_IOAPIC
+        depends on X86_64 || SMP || X86_32_NON_STANDARD || X86_UP_IOAPIC || PCI_MSI
 
 config X86_VISWS_APIC
         def_bool y
@@ -1033,6 +1033,7 @@ config X86_REBOOTFIXUPS
 
 config MICROCODE
         tristate "CPU microcode loading support"
+        depends on CPU_SUP_AMD || CPU_SUP_INTEL
         select FW_LOADER
         ---help---
 
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index d3f5c63078d8..89270b4318db 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -374,7 +374,7 @@ static __always_inline __pure bool __static_cpu_has(u16 bit)
                  * Catch too early usage of this before alternatives
                  * have run.
                  */
-                asm goto("1: jmp %l[t_warn]\n"
+                asm_volatile_goto("1: jmp %l[t_warn]\n"
                          "2:\n"
                          ".section .altinstructions,\"a\"\n"
                          " .long 1b - .\n"
@@ -388,7 +388,7 @@ static __always_inline __pure bool __static_cpu_has(u16 bit)
 
 #endif
 
-                asm goto("1: jmp %l[t_no]\n"
+                asm_volatile_goto("1: jmp %l[t_no]\n"
                          "2:\n"
                          ".section .altinstructions,\"a\"\n"
                          " .long 1b - .\n"
@@ -453,7 +453,7 @@ static __always_inline __pure bool _static_cpu_has_safe(u16 bit)
  * have. Thus, we force the jump to the widest, 4-byte, signed relative
  * offset even though the last would often fit in less bytes.
  */
-                asm goto("1: .byte 0xe9\n .long %l[t_dynamic] - 2f\n"
+                asm_volatile_goto("1: .byte 0xe9\n .long %l[t_dynamic] - 2f\n"
                          "2:\n"
                          ".section .altinstructions,\"a\"\n"
                          " .long 1b - .\n"              /* src offset */
diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h
index 64507f35800c..6a2cefb4395a 100644
--- a/arch/x86/include/asm/jump_label.h
+++ b/arch/x86/include/asm/jump_label.h
@@ -18,7 +18,7 @@
 
 static __always_inline bool arch_static_branch(struct static_key *key)
 {
-        asm goto("1:"
+        asm_volatile_goto("1:"
                 ".byte " __stringify(STATIC_KEY_INIT_NOP) "\n\t"
                 ".pushsection __jump_table,  \"aw\" \n\t"
                 _ASM_ALIGN "\n\t"
diff --git a/arch/x86/include/asm/mutex_64.h b/arch/x86/include/asm/mutex_64.h
index e7e6751648ed..07537a44216e 100644
--- a/arch/x86/include/asm/mutex_64.h
+++ b/arch/x86/include/asm/mutex_64.h
@@ -20,7 +20,7 @@
 static inline void __mutex_fastpath_lock(atomic_t *v,
                                          void (*fail_fn)(atomic_t *))
 {
-        asm volatile goto(LOCK_PREFIX "   decl %0\n"
+        asm_volatile_goto(LOCK_PREFIX "   decl %0\n"
                           "   jns %l[exit]\n"
                           : : "m" (v->counter)
                           : "memory", "cc"
@@ -75,7 +75,7 @@ static inline int __mutex_fastpath_lock_retval(atomic_t *count)
 static inline void __mutex_fastpath_unlock(atomic_t *v,
                                            void (*fail_fn)(atomic_t *))
 {
-        asm volatile goto(LOCK_PREFIX "   incl %0\n"
+        asm_volatile_goto(LOCK_PREFIX "   incl %0\n"
                           "   jg %l[exit]\n"
                           : : "m" (v->counter)
                           : "memory", "cc"
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 1191ac1c9d25..a419814cea57 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -113,7 +113,7 @@ static int __init early_get_pnodeid(void)
                 break;
         case UV3_HUB_PART_NUMBER:
         case UV3_HUB_PART_NUMBER_X:
-                uv_min_hub_revision_id += UV3_HUB_REVISION_BASE - 1;
+                uv_min_hub_revision_id += UV3_HUB_REVISION_BASE;
                 break;
         }
 
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 897783b3302a..9d8449158cf9 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1888,10 +1888,7 @@ void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now)
         userpg->cap_user_rdpmc = x86_pmu.attr_rdpmc;
         userpg->pmc_width = x86_pmu.cntval_bits;
 
-        if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC))
-                return;
-
-        if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC))
+        if (!sched_clock_stable)
                 return;
 
         userpg->cap_user_time = 1;
@@ -1899,10 +1896,8 @@ void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now)
         userpg->time_shift = CYC2NS_SCALE_FACTOR;
         userpg->time_offset = this_cpu_read(cyc2ns_offset) - now;
 
-        if (sched_clock_stable && !check_tsc_disabled()) {
-                userpg->cap_user_time_zero = 1;
-                userpg->time_zero = this_cpu_read(cyc2ns_offset);
-        }
+        userpg->cap_user_time_zero = 1;
+        userpg->time_zero = this_cpu_read(cyc2ns_offset);
 }
 
 /*
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 697b93af02dd..a0e2a8a80c94 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -775,11 +775,22 @@ void __init kvm_spinlock_init(void)
         if (!kvm_para_has_feature(KVM_FEATURE_PV_UNHALT))
                 return;
 
-        printk(KERN_INFO "KVM setup paravirtual spinlock\n");
+        pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(kvm_lock_spinning);
+        pv_lock_ops.unlock_kick = kvm_unlock_kick;
+}
+
+static __init int kvm_spinlock_init_jump(void)
+{
+        if (!kvm_para_available())
+                return 0;
+        if (!kvm_para_has_feature(KVM_FEATURE_PV_UNHALT))
+                return 0;
 
         static_key_slow_inc(&paravirt_ticketlocks_enabled);
+        printk(KERN_INFO "KVM setup paravirtual spinlock\n");
 
-        pv_lock_ops.lock_spinning = PV_CALLEE_SAVE(kvm_lock_spinning);
-        pv_lock_ops.unlock_kick = kvm_unlock_kick;
+        return 0;
 }
+early_initcall(kvm_spinlock_init_jump);
+
 #endif  /* CONFIG_PARAVIRT_SPINLOCKS */
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index e643e744e4d8..7e920bff99a3 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -326,6 +326,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
                         DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6320"),
                 },
         },
+        {       /* Handle problems with rebooting on the Latitude E5410. */
+                .callback = set_pci_reboot,
+                .ident = "Dell Latitude E5410",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E5410"),
+                },
+        },
         {       /* Handle problems with rebooting on the Latitude E5420. */
                 .callback = set_pci_reboot,
                 .ident = "Dell Latitude E5420",
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 3b8e7459dd4d..2b2fce1b2009 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3255,25 +3255,29 @@ static void vmx_decache_cr4_guest_bits(struct kvm_vcpu *vcpu)
 
 static void ept_load_pdptrs(struct kvm_vcpu *vcpu)
 {
+        struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
+
         if (!test_bit(VCPU_EXREG_PDPTR,
                       (unsigned long *)&vcpu->arch.regs_dirty))
                 return;
 
         if (is_paging(vcpu) && is_pae(vcpu) && !is_long_mode(vcpu)) {
-                vmcs_write64(GUEST_PDPTR0, vcpu->arch.mmu.pdptrs[0]);
-                vmcs_write64(GUEST_PDPTR1, vcpu->arch.mmu.pdptrs[1]);
-                vmcs_write64(GUEST_PDPTR2, vcpu->arch.mmu.pdptrs[2]);
-                vmcs_write64(GUEST_PDPTR3, vcpu->arch.mmu.pdptrs[3]);
+                vmcs_write64(GUEST_PDPTR0, mmu->pdptrs[0]);
+                vmcs_write64(GUEST_PDPTR1, mmu->pdptrs[1]);
+                vmcs_write64(GUEST_PDPTR2, mmu->pdptrs[2]);
+                vmcs_write64(GUEST_PDPTR3, mmu->pdptrs[3]);
         }
 }
 
 static void ept_save_pdptrs(struct kvm_vcpu *vcpu)
 {
+        struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
+
         if (is_paging(vcpu) && is_pae(vcpu) && !is_long_mode(vcpu)) {
-                vcpu->arch.mmu.pdptrs[0] = vmcs_read64(GUEST_PDPTR0);
-                vcpu->arch.mmu.pdptrs[1] = vmcs_read64(GUEST_PDPTR1);
-                vcpu->arch.mmu.pdptrs[2] = vmcs_read64(GUEST_PDPTR2);
-                vcpu->arch.mmu.pdptrs[3] = vmcs_read64(GUEST_PDPTR3);
+                mmu->pdptrs[0] = vmcs_read64(GUEST_PDPTR0);
+                mmu->pdptrs[1] = vmcs_read64(GUEST_PDPTR1);
+                mmu->pdptrs[2] = vmcs_read64(GUEST_PDPTR2);
+                mmu->pdptrs[3] = vmcs_read64(GUEST_PDPTR3);
         }
 
         __set_bit(VCPU_EXREG_PDPTR,
@@ -7777,10 +7781,6 @@ static void prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
                 vmcs_write64(GUEST_PDPTR1, vmcs12->guest_pdptr1);
                 vmcs_write64(GUEST_PDPTR2, vmcs12->guest_pdptr2);
                 vmcs_write64(GUEST_PDPTR3, vmcs12->guest_pdptr3);
-                __clear_bit(VCPU_EXREG_PDPTR,
-                                (unsigned long *)&vcpu->arch.regs_avail);
-                __clear_bit(VCPU_EXREG_PDPTR,
-                                (unsigned long *)&vcpu->arch.regs_dirty);
         }
 
         kvm_register_write(vcpu, VCPU_REGS_RSP, vmcs12->guest_rsp);
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index d1e4777b4e75..31d04758b76f 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -278,6 +278,15 @@ static void __init xen_smp_prepare_boot_cpu(void)
                    old memory can be recycled */
                 make_lowmem_page_readwrite(xen_initial_gdt);
 
+#ifdef CONFIG_X86_32
+                /*
+                 * Xen starts us with XEN_FLAT_RING1_DS, but linux code
+                 * expects __USER_DS
+                 */
+                loadsegment(ds, __USER_DS);
+                loadsegment(es, __USER_DS);
+#endif
+
                 xen_filter_cpu_maps();
                 xen_setup_vcpu_info_placement();
         }