Add a hook so that the paravirt backend knows when the allocator is
ready. This is useful for the obvious reason that the allocator is
available, but the other side-effect of having the bootmem allocator
available is that each page now has an associated "struct page".
Signed-off-by: Jeremy Fitzhardinge <jeremy@xxxxxxxxxxxxx>
---
 arch/i386/kernel/setup.c | 2 ++
 include/asm-i386/paravirt.h | 8 ++++++++
 include/asm-i386/setup.h | 4 ++++
 3 files changed, 14 insertions(+)
===================================================================
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -611,6 +611,8 @@ void __init setup_arch(char **cmdline_p)
 * NOTE: at this point the bootmem allocator is fully available.
 */
 
+ paravirt_post_allocator_init();
+
 dmi_scan_machine();
 
 #ifdef CONFIG_X86_GENERICARCH
===================================================================
--- a/include/asm-i386/paravirt.h
+++ b/include/asm-i386/paravirt.h
@@ -52,6 +52,8 @@ struct paravirt_ops
 /* Basic arch-specific setup */
 void (*arch_setup)(void);
 char *(*memory_setup)(void);
+ void (*post_allocator_init)(void);
+
 void (*init_IRQ)(void);
 void (*time_init)(void);
 
@@ -669,6 +671,12 @@ static inline void setup_secondary_clock
 }
 #endif
 
+static inline void paravirt_post_allocator_init(void)
+{
+ if (paravirt_ops.post_allocator_init)
+ (*paravirt_ops.post_allocator_init)();
+}
+
 static inline void paravirt_pagetable_setup_start(pgd_t *base)
 {
 if (paravirt_ops.pagetable_setup_start)
===================================================================
--- a/include/asm-i386/setup.h
+++ b/include/asm-i386/setup.h
@@ -79,6 +79,10 @@ void __init add_memory_region(unsigned l
 
 extern unsigned long init_pg_tables_end;
 
+#ifndef CONFIG_PARAVIRT
+#define paravirt_post_allocator_init() do {} while (0)
+#endif
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* __KERNEL__ */
-- 
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