[PATCH] i386: paravirt CPU hypercall batching mode

[net-next-2.6.git] / include / asm-i386 / paravirt.h

diff --git a/include/asm-i386/paravirt.h b/include/asm-i386/paravirt.h
index 9f06265065f4ae564e508aa7851091bd81630f1c..38e5164bd0e70451de85dd66e92f6208c7dffb14 100644 (file)
--- a/include/asm-i386/paravirt.h
+++ b/include/asm-i386/paravirt.h
@@ -127,6 +127,12 @@ struct paravirt_ops
        void (fastcall *flush_tlb_kernel)(void);
        void (fastcall *flush_tlb_single)(u32 addr);
 
+       void (fastcall *alloc_pt)(u32 pfn);
+       void (fastcall *alloc_pd)(u32 pfn);
+       void (fastcall *alloc_pd_clone)(u32 pfn, u32 clonepfn, u32 start, u32 count);
+       void (fastcall *release_pt)(u32 pfn);
+       void (fastcall *release_pd)(u32 pfn);
+
        void (fastcall *set_pte)(pte_t *ptep, pte_t pteval);
        void (fastcall *set_pte_at)(struct mm_struct *mm, u32 addr, pte_t *ptep, pte_t pteval);
        void (fastcall *set_pmd)(pmd_t *pmdp, pmd_t pmdval);
@@ -140,6 +146,8 @@ struct paravirt_ops
        void (fastcall *pmd_clear)(pmd_t *pmdp);
 #endif
 
+       void (fastcall *set_lazy_mode)(int mode);
+
        /* These two are jmp to, not actually called. */
        void (fastcall *irq_enable_sysexit)(void);
        void (fastcall *iret)(void);
@@ -320,6 +328,14 @@ static inline unsigned long apic_read(unsigned long reg)
 #define __flush_tlb_global() paravirt_ops.flush_tlb_kernel()
 #define __flush_tlb_single(addr) paravirt_ops.flush_tlb_single(addr)
 
+#define paravirt_alloc_pt(pfn) paravirt_ops.alloc_pt(pfn)
+#define paravirt_release_pt(pfn) paravirt_ops.release_pt(pfn)
+
+#define paravirt_alloc_pd(pfn) paravirt_ops.alloc_pd(pfn)
+#define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) \
+       paravirt_ops.alloc_pd_clone(pfn, clonepfn, start, count)
+#define paravirt_release_pd(pfn) paravirt_ops.release_pd(pfn)
+
 static inline void set_pte(pte_t *ptep, pte_t pteval)
 {
        paravirt_ops.set_pte(ptep, pteval);
@@ -372,6 +388,19 @@ static inline void pmd_clear(pmd_t *pmdp)
 }
 #endif
 
+/* Lazy mode for batching updates / context switch */
+#define PARAVIRT_LAZY_NONE 0
+#define PARAVIRT_LAZY_MMU  1
+#define PARAVIRT_LAZY_CPU  2
+
+#define  __HAVE_ARCH_ENTER_LAZY_CPU_MODE
+#define arch_enter_lazy_cpu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_CPU)
+#define arch_leave_lazy_cpu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_NONE)
+
+#define  __HAVE_ARCH_ENTER_LAZY_MMU_MODE
+#define arch_enter_lazy_mmu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_MMU)
+#define arch_leave_lazy_mmu_mode() paravirt_ops.set_lazy_mode(PARAVIRT_LAZY_NONE)
+
 /* These all sit in the .parainstructions section to tell us what to patch. */
 struct paravirt_patch {
        u8 *instr;              /* original instructions */