Changeset b0b2ac1 in mainline for kernel/arch/amd64/src/mm/page.c

Timestamp:

2010-05-31T19:38:05Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

3a2b636

Parents:

6e2bf29

Message:

Lock the page tables before working with them on amd64.

File:

• kernel/arch/amd64/src/mm/page.c (modified) (3 diffs)

kernel/arch/amd64/src/mm/page.c

@@ -88 +88 @@
         if (config.cpu_active == 1) {
                 page_mapping_operations = &pt_mapping_operations;
+
+                page_table_lock(AS_KERNEL, true);
 
                 /*
@@ -112 +114 @@
                 }
 
+                page_table_unlock(AS_KERNEL, true);
+
                 exc_register(14, "page_fault", (iroutine) page_fault);
                 write_cr3((uintptr_t) AS_KERNEL->genarch.page_table);
@@ -208 +212 @@
         uintptr_t virtaddr = PA2KA(last_frame);
         pfn_t i;
+
+        page_table_lock(AS_KERNEL, true);
         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_WRITE);
+        page_table_unlock(AS_KERNEL, true);
         
         last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);