i386: add a hook for once the allocator is ready From: Jeremy Fitzhardinge 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 Signed-off-by: Andi Kleen --- arch/i386/kernel/setup.c | 2 ++ include/asm-i386/paravirt.h | 8 ++++++++ include/asm-i386/setup.h | 4 ++++ 3 files changed, 14 insertions(+) =================================================================== Index: linux/arch/i386/kernel/setup.c =================================================================== --- linux.orig/arch/i386/kernel/setup.c +++ linux/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 Index: linux/include/asm-i386/paravirt.h =================================================================== --- linux.orig/include/asm-i386/paravirt.h +++ linux/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); @@ -672,6 +674,12 @@ 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) Index: linux/include/asm-i386/setup.h =================================================================== --- linux.orig/include/asm-i386/setup.h +++ linux/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__ */