Changeset 74df77d in mainline for arch/ia32/src/mm/page.c

Timestamp:

2005-06-10T16:18:43Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

87cd61f

Parents:

18e0a6c

Message:

Add map_structure() to automate mapping of memory structures that can span multiple pages and/or cross page boundaries.
Change ACPI map_sdt() to use map_structure().

Small changes in MPS code.
The extra frame allocation for accessing frame 0 is unnecessary as it is possible to access frame 0 from kernel address space.
Zero TSS descriptor in the newly prepared GDT.

File:

• arch/ia32/src/mm/page.c (modified) (1 diff)

arch/ia32/src/mm/page.c

@@ -61 +61 @@
 
                 /*
-                 * Identity mapping for all but 0th page.
-                 * PA2KA(identity) mapping for all but 0th page.
+                 * Identity mapping for all frames.
+                 * PA2KA(identity) mapping for all frames.
                  */
-                for (i = 1; i < frames; i++) {
+                for (i = 0; i < frames; i++) {
                         map_page_to_frame(i * PAGE_SIZE, i * PAGE_SIZE, PAGE_CACHEABLE, KA2PA(dba));
                         map_page_to_frame(PA2KA(i * PAGE_SIZE), i * PAGE_SIZE, PAGE_CACHEABLE, KA2PA(dba));