x86: Move paravirt banner printout to x86_init_ops

[safe/jmp/linux-2.6] / arch / x86 / kernel / paravirt.c

diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index 6dc4dca..f7a5fb7 100644 (file)
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -28,7 +28,6 @@
 #include <asm/paravirt.h>
 #include <asm/desc.h>
 #include <asm/setup.h>
-#include <asm/arch_hooks.h>
 #include <asm/pgtable.h>
 #include <asm/time.h>
 #include <asm/pgalloc.h>
@@ -55,17 +54,12 @@ u64 _paravirt_ident_64(u64 x)
        return x;
 }
 
-static void __init default_banner(void)
+void __init default_banner(void)
 {
        printk(KERN_INFO "Booting paravirtualized kernel on %s\n",
               pv_info.name);
 }
 
-char *memory_setup(void)
-{
-       return pv_init_ops.memory_setup();
-}
-
 /* Simple instruction patching code. */
 #define DEF_NATIVE(ops, name, code)                                    \
        extern const char start_##ops##_##name[], end_##ops##_##name[]; \
@@ -135,7 +129,9 @@ static void *get_call_destination(u8 type)
                .pv_irq_ops = pv_irq_ops,
                .pv_apic_ops = pv_apic_ops,
                .pv_mmu_ops = pv_mmu_ops,
+#ifdef CONFIG_PARAVIRT_SPINLOCKS
                .pv_lock_ops = pv_lock_ops,
+#endif
        };
        return *((void **)&tmpl + type);
 }
@@ -187,11 +183,6 @@ unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
        return insn_len;
 }
 
-void init_IRQ(void)
-{
-       pv_irq_ops.init_IRQ();
-}
-
 static void native_flush_tlb(void)
 {
        __native_flush_tlb();
@@ -217,13 +208,6 @@ extern void native_irq_enable_sysexit(void);
 extern void native_usergs_sysret32(void);
 extern void native_usergs_sysret64(void);
 
-static int __init print_banner(void)
-{
-       pv_init_ops.banner();
-       return 0;
-}
-core_initcall(print_banner);
-
 static struct resource reserve_ioports = {
        .start = 0,
        .end = IO_SPACE_LIMIT,
@@ -247,18 +231,16 @@ static DEFINE_PER_CPU(enum paravirt_lazy_mode, paravirt_lazy_mode) = PARAVIRT_LA
 
 static inline void enter_lazy(enum paravirt_lazy_mode mode)
 {
-       BUG_ON(__get_cpu_var(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE);
-       BUG_ON(preemptible());
+       BUG_ON(percpu_read(paravirt_lazy_mode) != PARAVIRT_LAZY_NONE);
 
-       __get_cpu_var(paravirt_lazy_mode) = mode;
+       percpu_write(paravirt_lazy_mode, mode);
 }
 
-void paravirt_leave_lazy(enum paravirt_lazy_mode mode)
+static void leave_lazy(enum paravirt_lazy_mode mode)
 {
-       BUG_ON(__get_cpu_var(paravirt_lazy_mode) != mode);
-       BUG_ON(preemptible());
+       BUG_ON(percpu_read(paravirt_lazy_mode) != mode);
 
-       __get_cpu_var(paravirt_lazy_mode) = PARAVIRT_LAZY_NONE;
+       percpu_write(paravirt_lazy_mode, PARAVIRT_LAZY_NONE);
 }
 
 void paravirt_enter_lazy_mmu(void)
@@ -268,22 +250,36 @@ void paravirt_enter_lazy_mmu(void)
 
 void paravirt_leave_lazy_mmu(void)
 {
-       paravirt_leave_lazy(PARAVIRT_LAZY_MMU);
+       leave_lazy(PARAVIRT_LAZY_MMU);
 }
 
-void paravirt_enter_lazy_cpu(void)
+void paravirt_start_context_switch(struct task_struct *prev)
 {
+       BUG_ON(preemptible());
+
+       if (percpu_read(paravirt_lazy_mode) == PARAVIRT_LAZY_MMU) {
+               arch_leave_lazy_mmu_mode();
+               set_ti_thread_flag(task_thread_info(prev), TIF_LAZY_MMU_UPDATES);
+       }
        enter_lazy(PARAVIRT_LAZY_CPU);
 }
 
-void paravirt_leave_lazy_cpu(void)
+void paravirt_end_context_switch(struct task_struct *next)
 {
-       paravirt_leave_lazy(PARAVIRT_LAZY_CPU);
+       BUG_ON(preemptible());
+
+       leave_lazy(PARAVIRT_LAZY_CPU);
+
+       if (test_and_clear_ti_thread_flag(task_thread_info(next), TIF_LAZY_MMU_UPDATES))
+               arch_enter_lazy_mmu_mode();
 }
 
 enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
 {
-       return __get_cpu_var(paravirt_lazy_mode);
+       if (in_interrupt())
+               return PARAVIRT_LAZY_NONE;
+
+       return percpu_read(paravirt_lazy_mode);
 }
 
 void arch_flush_lazy_mmu_mode(void)
@@ -291,7 +287,6 @@ void arch_flush_lazy_mmu_mode(void)
        preempt_disable();
 
        if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU) {
-               WARN_ON(preempt_count() == 1);
                arch_leave_lazy_mmu_mode();
                arch_enter_lazy_mmu_mode();
        }
@@ -299,19 +294,6 @@ void arch_flush_lazy_mmu_mode(void)
        preempt_enable();
 }
 
-void arch_flush_lazy_cpu_mode(void)
-{
-       preempt_disable();
-
-       if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_CPU) {
-               WARN_ON(preempt_count() == 1);
-               arch_leave_lazy_cpu_mode();
-               arch_enter_lazy_cpu_mode();
-       }
-
-       preempt_enable();
-}
-
 struct pv_info pv_info = {
        .name = "bare hardware",
        .paravirt_enabled = 0,
@@ -321,9 +303,6 @@ struct pv_info pv_info = {
 
 struct pv_init_ops pv_init_ops = {
        .patch = native_patch,
-       .banner = default_banner,
-       .arch_setup = paravirt_nop,
-       .memory_setup = machine_specific_memory_setup,
 };
 
 struct pv_time_ops pv_time_ops = {
@@ -335,7 +314,6 @@ struct pv_time_ops pv_time_ops = {
 };
 
 struct pv_irq_ops pv_irq_ops = {
-       .init_IRQ = native_init_IRQ,
        .save_fl = __PV_IS_CALLEE_SAVE(native_save_fl),
        .restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl),
        .irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable),
@@ -403,10 +381,8 @@ struct pv_cpu_ops pv_cpu_ops = {
        .set_iopl_mask = native_set_iopl_mask,
        .io_delay = native_io_delay,
 
-       .lazy_mode = {
-               .enter = paravirt_nop,
-               .leave = paravirt_nop,
-       },
+       .start_context_switch = paravirt_nop,
+       .end_context_switch = paravirt_nop,
 };
 
 struct pv_apic_ops pv_apic_ops = {
@@ -471,7 +447,6 @@ struct pv_mmu_ops pv_mmu_ops = {
 #if PAGETABLE_LEVELS >= 3
 #ifdef CONFIG_X86_PAE
        .set_pte_atomic = native_set_pte_atomic,
-       .set_pte_present = native_set_pte_present,
        .pte_clear = native_pte_clear,
        .pmd_clear = native_pmd_clear,
 #endif