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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-09-22 08:26:16 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-09-22 08:26:16 +0100 |
| commit | 84d568f5c9ceb342be7c883074ac8c5423ab1492 (patch) | |
| tree | 115cf3d4c07b9639192c005e5ef7e129f47c1e4b /xen/common/page_alloc.c | |
| parent | 78e09264ad9836fa47610399e4a5b4d3cd62caf5 (diff) | |
| download | xen-84d568f5c9ceb342be7c883074ac8c5423ab1492.tar.gz xen-84d568f5c9ceb342be7c883074ac8c5423ab1492.tar.bz2 xen-84d568f5c9ceb342be7c883074ac8c5423ab1492.zip | |
Introduce new flavour of map_domain_page()
Introduce a variant of map_domain_page() directly getting passed a
struct page_info * argument, based on the observation that in many
places the argument to this function so far simply was the result of
page_to_mfn(). This is meaningful for the x86-64 case where
map_domain_page() really just is an invocation of mfn_to_virt(), and
hence the combined mfn_to_virt(page_to_mfn()) now represents a
needless round trip conversion compressed -> uncompressed ->
compressed of the MFN representation.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Diffstat (limited to 'xen/common/page_alloc.c')
| -rw-r--r-- | xen/common/page_alloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c index 395732dee5..44813ebf1c 100644 --- a/xen/common/page_alloc.c +++ b/xen/common/page_alloc.c @@ -1235,7 +1235,7 @@ __initcall(pagealloc_keyhandler_init); void scrub_one_page(struct page_info *pg) { - void *p = map_domain_page(page_to_mfn(pg)); + void *p = __map_domain_page(pg); #ifndef NDEBUG /* Avoid callers relying on allocations returning zeroed pages. */ |