Changeset e3ce39b in mainline for kernel/arch/ia32/src/smp/smp.c

Timestamp:

2010-05-31T19:08:26Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

6e2bf29

Parents:

a820bf7

Message:

Lock the page tables before working with them on ia32.

File:

• kernel/arch/ia32/src/smp/smp.c (modified) (1 diff)

kernel/arch/ia32/src/smp/smp.c

@@ -83 +83 @@
                 panic("Cannot allocate address for io_apic.");
 
-        if (config.cpu_count > 1) {             
+        if (config.cpu_count > 1) {
+                page_table_lock(AS_KERNEL, true);
                 page_mapping_insert(AS_KERNEL, l_apic_address,
                     (uintptr_t) l_apic, PAGE_NOT_CACHEABLE | PAGE_WRITE);
                 page_mapping_insert(AS_KERNEL, io_apic_address,
                     (uintptr_t) io_apic, PAGE_NOT_CACHEABLE | PAGE_WRITE);
+                page_table_unlock(AS_KERNEL, true);
                                   
                 l_apic = (uint32_t *) l_apic_address;