Changeset 7cb567cd in mainline for kernel/arch/ppc64/src/mm/page.c

Timestamp:

2007-04-08T20:52:53Z (18 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

e5dbbe5

Parents:

328f324b

Message:

map kernel pages explicitly as writable (this solves compatibility issues with Intel Core 2)
make VESA framebuffer initialization more robust

File:

• kernel/arch/ppc64/src/mm/page.c (modified) (2 diffs)

kernel/arch/ppc64/src/mm/page.c

@@ -265 +265 @@
                 int flags;
                 
-                /* Frames below 128 MB are mapped using BAT,
-                   map rest of the physical memory */
                 for (cur = 128 << 20; cur < last_frame; cur += FRAME_SIZE) {
-                        flags = PAGE_CACHEABLE;
+                        flags = PAGE_CACHEABLE | PAGE_WRITE;
                         if ((PA2KA(cur) >= config.base) && (PA2KA(cur) < config.base + config.kernel_size))
                                 flags |= PAGE_GLOBAL;
@@ -297 +295 @@
         pfn_t i;
         for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++)
-                page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE);
+                page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE | PAGE_WRITE);
         
         last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);