Changeset efb48eb in mainline

Timestamp:

2011-12-30T23:56:54Z (13 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

22f0561

Parents:

41deb2a

Message:

Make hw_map() allocate naturally aligned virtual addresses.

File:

• kernel/generic/src/mm/page.c (modified) (2 diffs)

kernel/generic/src/mm/page.c

@@ -76 +76 @@
 #include <errno.h>
 #include <align.h>
+#include <macros.h>
+#include <bitops.h>
 
 /** Virtual operations for page subsystem. */
@@ -195 +197 @@
         uintptr_t virtaddr;
         size_t asize;
+        size_t align;
         pfn_t i;
 
         asize = ALIGN_UP(size, PAGE_SIZE);
-        virtaddr = km_page_alloc(asize, PAGE_SIZE);
+        align = ispwr2(size) ? size : (1U << (fnzb(size) + 1));
+        virtaddr = km_page_alloc(asize, align);
 
         page_table_lock(AS_KERNEL, true);