[patch 02/33] xen: paravirt: add a hook for once the allocator is ready

Jeremy Fitzhardinge
2007-05-22T15:25:44Z

[-- Attachment #1: paravirt-add-post_allocator_init.patch --]
[-- Type: text/plain, Size: 1931 bytes --]

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@xensource.com>

---
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__ */

--