Merge commit 'remotes/tip/x86/paravirt' into x86/untangle2

* commit 'remotes/tip/x86/paravirt': (175 commits)
  xen: use direct ops on 64-bit
  xen: make direct versions of irq_enable/disable/save/restore to common code
  xen: setup percpu data pointers
  xen: fix 32-bit build resulting from mmu move
  x86/paravirt: return full 64-bit result
  x86, percpu: fix kexec with vmlinux
  x86/vmi: fix interrupt enable/disable/save/restore calling convention.
  x86/paravirt: don't restore second return reg
  xen: setup percpu data pointers
  x86: split loading percpu segments from loading gdt
  x86: pass in cpu number to switch_to_new_gdt()
  x86: UV fix uv_flush_send_and_wait()
  x86/paravirt: fix missing callee-save call on pud_val
  x86/paravirt: use callee-saved convention for pte_val/make_pte/etc
  x86/paravirt: implement PVOP_CALL macros for callee-save functions
  x86/paravirt: add register-saving thunks to reduce caller register pressure
  x86/paravirt: selectively save/restore regs around pvops calls
  x86: fix paravirt clobber in entry_64.S
  x86/pvops: add a paravirt_ident functions to allow special patching
  xen: move remaining mmu-related stuff into mmu.c
  ...

Conflicts:
	arch/x86/mach-voyager/voyager_smp.c
	arch/x86/mm/fault.c

1 files changed, 14 insertions, 8 deletions

diff --git a/arch/x86/xen/irq.c b/arch/x86/xen/irq.c
index bb042608c602..5a070900ad35 100644
--- a/arch/x86/xen/irq.c
+++ b/arch/x86/xen/irq.c
@@ -39,7 +39,7 @@ static unsigned long xen_save_fl(void)
         struct vcpu_info *vcpu;
         unsigned long flags;
 
-        vcpu = x86_read_percpu(xen_vcpu);
+        vcpu = percpu_read(xen_vcpu);
 
         /* flag has opposite sense of mask */
         flags = !vcpu->evtchn_upcall_mask;
@@ -50,6 +50,7 @@ static unsigned long xen_save_fl(void)
         */
         return (-flags) & X86_EFLAGS_IF;
 }
+PV_CALLEE_SAVE_REGS_THUNK(xen_save_fl);
 
 static void xen_restore_fl(unsigned long flags)
 {
@@ -62,7 +63,7 @@ static void xen_restore_fl(unsigned long flags)
            make sure we're don't switch CPUs between getting the vcpu
            pointer and updating the mask. */
         preempt_disable();
-        vcpu = x86_read_percpu(xen_vcpu);
+        vcpu = percpu_read(xen_vcpu);
         vcpu->evtchn_upcall_mask = flags;
         preempt_enable_no_resched();
 
@@ -76,6 +77,7 @@ static void xen_restore_fl(unsigned long flags)
                         xen_force_evtchn_callback();
         }
 }
+PV_CALLEE_SAVE_REGS_THUNK(xen_restore_fl);
 
 static void xen_irq_disable(void)
 {
@@ -83,9 +85,10 @@ static void xen_irq_disable(void)
            make sure we're don't switch CPUs between getting the vcpu
            pointer and updating the mask. */
         preempt_disable();
-        x86_read_percpu(xen_vcpu)->evtchn_upcall_mask = 1;
+        percpu_read(xen_vcpu)->evtchn_upcall_mask = 1;
         preempt_enable_no_resched();
 }
+PV_CALLEE_SAVE_REGS_THUNK(xen_irq_disable);
 
 static void xen_irq_enable(void)
 {
@@ -96,7 +99,7 @@ static void xen_irq_enable(void)
            the caller is confused and is trying to re-enable interrupts
            on an indeterminate processor. */
 
-        vcpu = x86_read_percpu(xen_vcpu);
+        vcpu = percpu_read(xen_vcpu);
         vcpu->evtchn_upcall_mask = 0;
 
         /* Doesn't matter if we get preempted here, because any
@@ -106,6 +109,7 @@ static void xen_irq_enable(void)
         if (unlikely(vcpu->evtchn_upcall_pending))
                 xen_force_evtchn_callback();
 }
+PV_CALLEE_SAVE_REGS_THUNK(xen_irq_enable);
 
 static void xen_safe_halt(void)
 {
@@ -124,10 +128,12 @@ static void xen_halt(void)
 
 static const struct pv_irq_ops xen_irq_ops __initdata = {
         .init_IRQ = __xen_init_IRQ,
-        .save_fl = xen_save_fl,
-        .restore_fl = xen_restore_fl,
-        .irq_disable = xen_irq_disable,
-        .irq_enable = xen_irq_enable,
+
+        .save_fl = PV_CALLEE_SAVE(xen_save_fl),
+        .restore_fl = PV_CALLEE_SAVE(xen_restore_fl),
+        .irq_disable = PV_CALLEE_SAVE(xen_irq_disable),
+        .irq_enable = PV_CALLEE_SAVE(xen_irq_enable),
+
         .safe_halt = xen_safe_halt,
         .halt = xen_halt,
 #ifdef CONFIG_X86_64