x86/paravirt: add a pgd_alloc/free hooks
authorJeremy Fitzhardinge <jeremy@goop.org>
Wed, 25 Jun 2008 04:19:12 +0000 (00:19 -0400)
committerIngo Molnar <mingo@elte.hu>
Tue, 8 Jul 2008 11:11:01 +0000 (13:11 +0200)
commiteba0045ff87bab465d3c80c289f3bf709c1800f5
treee015805494c1ddb427fa568619163913270963bd
parent67350a5c4514c280665cdb45439d32a008a264ba
x86/paravirt: add a pgd_alloc/free hooks

Add hooks which are called at pgd_alloc/free time.  The pgd_alloc hook
may return an error code, which if non-zero, causes the pgd allocation
to be failed.  The hooks may be used to allocate/free auxillary
per-pgd information.

also fix:

> * Ingo Molnar <mingo@elte.hu> wrote:
>
>  include/asm/pgalloc.h: In function â€˜paravirt_pgd_free':
>  include/asm/pgalloc.h:14: error: parameter name omitted
>  arch/x86/kernel/entry_64.S: In file included from
>  arch/x86/kernel/traps_64.c:51:include/asm/pgalloc.h: In function â€˜paravirt_pgd_free':
>  include/asm/pgalloc.h:14: error: parameter name omitted

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/paravirt.c
arch/x86/mm/pgtable.c
arch/x86/xen/enlighten.c
include/asm-x86/paravirt.h
include/asm-x86/pgalloc.h