Sign Up
Log In
Log In
or
Sign Up
Places
All Projects
Status Monitor
Collapse sidebar
openSUSE:Evergreen:11.1:kernel-2.6.32
xen
19140-init-heap-pages-max-order.patch
Overview
Repositories
Revisions
Requests
Users
Attributes
Meta
File 19140-init-heap-pages-max-order.patch of Package xen
# HG changeset patch # User Keir Fraser <keir.fraser@citrix.com> # Date 1233314063 0 # Node ID 9b9078a02f65fc010ad838de1c9c4e8aa4cf1009 # Parent e1135b40e783e965ed4eccfd8e983e9f3f4259e8 page_alloc: properly honor MAX_ORDER in init_heap_pages() The previous check was flawed in that it checked - for a single bit to be set instead of a range of bits to be clear - a machine address against a mask supposed to be used on MFNs. Signed-off-by: Jan Beulich <jbeulich@novell.com> --- a/xen/common/page_alloc.c +++ b/xen/common/page_alloc.c @@ -477,7 +477,6 @@ static void free_heap_pages( * latter is not on a MAX_ORDER boundary, then we reserve the page by * not freeing it to the buddy allocator. */ -#define MAX_ORDER_ALIGNED (1UL << (MAX_ORDER)) static void init_heap_pages( unsigned int zone, struct page_info *pg, unsigned long nr_pages) { @@ -499,16 +498,15 @@ static void init_heap_pages( init_node_heap(nid_curr); /* - * free pages of the same node, or if they differ, but are on a - * MAX_ORDER alignement boundary (which already get reserved) + * Free pages of the same node, or if they differ, but are on a + * MAX_ORDER alignment boundary (which already get reserved). */ - if ( (nid_curr == nid_prev) || (page_to_maddr(pg+i) & - MAX_ORDER_ALIGNED) ) - free_heap_pages(zone, pg+i, 0); - else - printk("Reserving non-aligned node boundary @ mfn %lu\n", - page_to_mfn(pg+i)); - + if ( (nid_curr == nid_prev) || + !(page_to_mfn(pg+i) & ((1UL << MAX_ORDER) - 1)) ) + free_heap_pages(zone, pg+i, 0); + else + printk("Reserving non-aligned node boundary @ mfn %#lx\n", + page_to_mfn(pg+i)); nid_prev = nid_curr; } }
Locations
Projects
Search
Status Monitor
Help
OpenBuildService.org
Documentation
API Documentation
Code of Conduct
Contact
Support
@OBShq
Terms
openSUSE Build Service is sponsored by
The Open Build Service is an
openSUSE project
.
Sign Up
Log In
Places
Places
All Projects
Status Monitor