Merge branch 'master' into percpu

Conflicts:
	arch/powerpc/platforms/pseries/hvCall.S
	include/linux/percpu.h

8 files changed, 67 insertions, 35 deletions

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 3439616..2b26dd5 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -27,7 +27,9 @@
 #include <linux/page-flags.h>
 #include <linux/highmem.h>
 #include <linux/console.h>
+#include <linux/pci.h>
 
+#include <xen/xen.h>
 #include <xen/interface/xen.h>
 #include <xen/interface/version.h>
 #include <xen/interface/physdev.h>
@@ -138,24 +140,23 @@ static void xen_vcpu_setup(int cpu)
  */
 void xen_vcpu_restore(void)
 {
-	if (have_vcpu_info_placement) {
-		int cpu;
+	int cpu;
 
-		for_each_online_cpu(cpu) {
-			bool other_cpu = (cpu != smp_processor_id());
+	for_each_online_cpu(cpu) {
+		bool other_cpu = (cpu != smp_processor_id());
 
-			if (other_cpu &&
-			    HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL))
-				BUG();
+		if (other_cpu &&
+		    HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL))
+			BUG();
 
-			xen_vcpu_setup(cpu);
+		xen_setup_runstate_info(cpu);
 
-			if (other_cpu &&
-			    HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL))
-				BUG();
-		}
+		if (have_vcpu_info_placement)
+			xen_vcpu_setup(cpu);
 
-		BUG_ON(!have_vcpu_info_placement);
+		if (other_cpu &&
+		    HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL))
+			BUG();
 	}
 }
 
@@ -178,6 +179,7 @@ static __read_mostly unsigned int cpuid_leaf1_ecx_mask = ~0;
 static void xen_cpuid(unsigned int *ax, unsigned int *bx,
 		      unsigned int *cx, unsigned int *dx)
 {
+	unsigned maskebx = ~0;
 	unsigned maskecx = ~0;
 	unsigned maskedx = ~0;
 
@@ -185,9 +187,16 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx,
 	 * Mask out inconvenient features, to try and disable as many
 	 * unsupported kernel subsystems as possible.
 	 */
-	if (*ax == 1) {
+	switch (*ax) {
+	case 1:
 		maskecx = cpuid_leaf1_ecx_mask;
 		maskedx = cpuid_leaf1_edx_mask;
+		break;
+
+	case 0xb:
+		/* Suppress extended topology stuff */
+		maskebx = 0;
+		break;
 	}
 
 	asm(XEN_EMULATE_PREFIX "cpuid"
@@ -197,6 +206,7 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx,
 		  "=d" (*dx)
 		: "0" (*ax), "2" (*cx));
 
+	*bx &= maskebx;
 	*cx &= maskecx;
 	*dx &= maskedx;
 }
@@ -1075,6 +1085,8 @@ asmlinkage void __init xen_start_kernel(void)
 	 * Set up some pagetable state before starting to set any ptes.
 	 */
 
+	xen_init_mmu_ops();
+
 	/* Prevent unwanted bits from being set in PTEs. */
 	__supported_pte_mask &= ~_PAGE_GLOBAL;
 	if (!xen_initial_domain())
@@ -1082,10 +1094,8 @@ asmlinkage void __init xen_start_kernel(void)
 
 	__supported_pte_mask |= _PAGE_IOMAP;
 
-#ifdef CONFIG_X86_64
 	/* Work out if we support NX */
-	check_efer();
-#endif
+	x86_configure_nx();
 
 	xen_setup_features();
 
@@ -1099,7 +1109,6 @@ asmlinkage void __init xen_start_kernel(void)
 	 */
 	xen_setup_stackprotector();
 
-	xen_init_mmu_ops();
 	xen_init_irq_ops();
 	xen_init_cpuid_mask();
 
@@ -1168,10 +1177,16 @@ asmlinkage void __init xen_start_kernel(void)
 		add_preferred_console("xenboot", 0, NULL);
 		add_preferred_console("tty", 0, NULL);
 		add_preferred_console("hvc", 0, NULL);
+	} else {
+		/* Make sure ACS will be enabled */
+		pci_request_acs();
 	}
+		
 
 	xen_raw_console_write("about to get started...\n");
 
+	xen_setup_runstate_info(0);
+
 	/* Start the world */
 #ifdef CONFIG_X86_32
 	i386_start_kernel();
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 3bf7b1d..bf4cd6b 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -185,7 +185,7 @@ static inline unsigned p2m_index(unsigned long pfn)
 }
 
 /* Build the parallel p2m_top_mfn structures */
-static void __init xen_build_mfn_list_list(void)
+void xen_build_mfn_list_list(void)
 {
 	unsigned pfn, idx;
 
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 1167d98..563d205 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -73,7 +73,7 @@ static __cpuinit void cpu_bringup(void)
 
 	xen_setup_cpu_clockevents();
 
-	cpu_set(cpu, cpu_online_map);
+	set_cpu_online(cpu, true);
 	percpu_write(cpu_state, CPU_ONLINE);
 	wmb();
 
@@ -296,6 +296,7 @@ static int __cpuinit xen_cpu_up(unsigned int cpu)
 		(unsigned long)task_stack_page(idle) -
 		KERNEL_STACK_OFFSET + THREAD_SIZE;
 #endif
+	xen_setup_runstate_info(cpu);
 	xen_setup_timer(cpu);
 	xen_init_lock_cpu(cpu);
 
diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c
index 36a5141..24ded31 100644
--- a/arch/x86/xen/spinlock.c
+++ b/arch/x86/xen/spinlock.c
@@ -120,14 +120,14 @@ struct xen_spinlock {
 	unsigned short spinners;	/* count of waiting cpus */
 };
 
-static int xen_spin_is_locked(struct raw_spinlock *lock)
+static int xen_spin_is_locked(struct arch_spinlock *lock)
 {
 	struct xen_spinlock *xl = (struct xen_spinlock *)lock;
 
 	return xl->lock != 0;
 }
 
-static int xen_spin_is_contended(struct raw_spinlock *lock)
+static int xen_spin_is_contended(struct arch_spinlock *lock)
 {
 	struct xen_spinlock *xl = (struct xen_spinlock *)lock;
 
@@ -136,7 +136,7 @@ static int xen_spin_is_contended(struct raw_spinlock *lock)
 	return xl->spinners != 0;
 }
 
-static int xen_spin_trylock(struct raw_spinlock *lock)
+static int xen_spin_trylock(struct arch_spinlock *lock)
 {
 	struct xen_spinlock *xl = (struct xen_spinlock *)lock;
 	u8 old = 1;
@@ -181,7 +181,7 @@ static inline void unspinning_lock(struct xen_spinlock *xl, struct xen_spinlock
 	__get_cpu_var(lock_spinners) = prev;
 }
 
-static noinline int xen_spin_lock_slow(struct raw_spinlock *lock, bool irq_enable)
+static noinline int xen_spin_lock_slow(struct arch_spinlock *lock, bool irq_enable)
 {
 	struct xen_spinlock *xl = (struct xen_spinlock *)lock;
 	struct xen_spinlock *prev;
@@ -254,7 +254,7 @@ out:
 	return ret;
 }
 
-static inline void __xen_spin_lock(struct raw_spinlock *lock, bool irq_enable)
+static inline void __xen_spin_lock(struct arch_spinlock *lock, bool irq_enable)
 {
 	struct xen_spinlock *xl = (struct xen_spinlock *)lock;
 	unsigned timeout;
@@ -291,12 +291,12 @@ static inline void __xen_spin_lock(struct raw_spinlock *lock, bool irq_enable)
 	spin_time_accum_total(start_spin);
 }
 
-static void xen_spin_lock(struct raw_spinlock *lock)
+static void xen_spin_lock(struct arch_spinlock *lock)
 {
 	__xen_spin_lock(lock, false);
 }
 
-static void xen_spin_lock_flags(struct raw_spinlock *lock, unsigned long flags)
+static void xen_spin_lock_flags(struct arch_spinlock *lock, unsigned long flags)
 {
 	__xen_spin_lock(lock, !raw_irqs_disabled_flags(flags));
 }
@@ -317,7 +317,7 @@ static noinline void xen_spin_unlock_slow(struct xen_spinlock *xl)
 	}
 }
 
-static void xen_spin_unlock(struct raw_spinlock *lock)
+static void xen_spin_unlock(struct arch_spinlock *lock)
 {
 	struct xen_spinlock *xl = (struct xen_spinlock *)lock;
 
diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c
index 95be7b4..987267f 100644
--- a/arch/x86/xen/suspend.c
+++ b/arch/x86/xen/suspend.c
@@ -1,4 +1,5 @@
 #include <linux/types.h>
+#include <linux/clockchips.h>
 
 #include <xen/interface/xen.h>
 #include <xen/grant_table.h>
@@ -27,6 +28,8 @@ void xen_pre_suspend(void)
 
 void xen_post_suspend(int suspend_cancelled)
 {
+	xen_build_mfn_list_list();
+
 	xen_setup_shared_info();
 
 	if (suspend_cancelled) {
@@ -44,7 +47,19 @@ void xen_post_suspend(int suspend_cancelled)
 
 }
 
+static void xen_vcpu_notify_restore(void *data)
+{
+	unsigned long reason = (unsigned long)data;
+
+	/* Boot processor notified via generic timekeeping_resume() */
+	if ( smp_processor_id() == 0)
+		return;
+
+	clockevents_notify(reason, NULL);
+}
+
 void xen_arch_resume(void)
 {
-	/* nothing */
+	smp_call_function(xen_vcpu_notify_restore,
+			       (void *)CLOCK_EVT_NOTIFY_RESUME, 1);
 }
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index 26e37b7..0d3f07c 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -100,7 +100,7 @@ bool xen_vcpu_stolen(int vcpu)
 	return per_cpu(xen_runstate, vcpu).state == RUNSTATE_runnable;
 }
 
-static void setup_runstate_info(int cpu)
+void xen_setup_runstate_info(int cpu)
 {
 	struct vcpu_register_runstate_memory_area area;
 
@@ -434,7 +434,7 @@ void xen_setup_timer(int cpu)
 		name = "<timer kasprintf failed>";
 
 	irq = bind_virq_to_irqhandler(VIRQ_TIMER, cpu, xen_timer_interrupt,
-				      IRQF_DISABLED|IRQF_PERCPU|IRQF_NOBALANCING,
+				      IRQF_DISABLED|IRQF_PERCPU|IRQF_NOBALANCING|IRQF_TIMER,
 				      name, NULL);
 
 	evt = &per_cpu(xen_clock_events, cpu);
@@ -442,8 +442,6 @@ void xen_setup_timer(int cpu)
 
 	evt->cpumask = cpumask_of(cpu);
 	evt->irq = irq;
-
-	setup_runstate_info(cpu);
 }
 
 void xen_teardown_timer(int cpu)
@@ -494,6 +492,7 @@ __init void xen_time_init(void)
 
 	setup_force_cpu_cap(X86_FEATURE_TSC);
 
+	xen_setup_runstate_info(cpu);
 	xen_setup_timer(cpu);
 	xen_setup_cpu_clockevents();
 }
diff --git a/arch/x86/xen/xen-asm_64.S b/arch/x86/xen/xen-asm_64.S
index 02f496a..53adefd 100644
--- a/arch/x86/xen/xen-asm_64.S
+++ b/arch/x86/xen/xen-asm_64.S
@@ -96,7 +96,7 @@ ENTRY(xen_sysret32)
 	pushq $__USER32_CS
 	pushq %rcx
 
-	pushq $VGCF_in_syscall
+	pushq $0
 1:	jmp hypercall_iret
 ENDPATCH(xen_sysret32)
 RELOC(xen_sysret32, 1b+1)
@@ -151,7 +151,7 @@ ENTRY(xen_syscall32_target)
 ENTRY(xen_sysenter_target)
 	lea 16(%rsp), %rsp	/* strip %rcx, %r11 */
 	mov $-ENOSYS, %rax
-	pushq $VGCF_in_syscall
+	pushq $0
 	jmp hypercall_iret
 ENDPROC(xen_syscall32_target)
 ENDPROC(xen_sysenter_target)
diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index 355fa6b..f9153a3 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -25,6 +25,7 @@ extern struct shared_info *HYPERVISOR_shared_info;
 
 void xen_setup_mfn_list_list(void);
 void xen_setup_shared_info(void);
+void xen_build_mfn_list_list(void);
 void xen_setup_machphys_mapping(void);
 pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn);
 void xen_ident_map_ISA(void);
@@ -41,6 +42,7 @@ void __init xen_build_dynamic_phys_to_machine(void);
 
 void xen_init_irq_ops(void);
 void xen_setup_timer(int cpu);
+void xen_setup_runstate_info(int cpu);
 void xen_teardown_timer(int cpu);
 cycle_t xen_clocksource_read(void);
 void xen_setup_cpu_clockevents(void);