Changeset de25b6f in mainline

Timestamp:

2005-09-01T15:24:46Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

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

Children:

c7bb8b05

Parents:

e83a9f7

Message:

Removed mapping of bottom 2GB to kernel space.

Location:

arch/amd64/src

Files:

• mm/page.c (modified) (1 diff)
• pm.c (modified) (3 diffs)

arch/amd64/src/mm/page.c

@@ -55 +55 @@
                  */
                 for (i = 0; i < frames; i++) {
-                        map_page_to_frame(i * PAGE_SIZE, i * PAGE_SIZE, PAGE_CACHEABLE | PAGE_EXEC, KA2PA(dba));
                         map_page_to_frame(PA2KA(i * PAGE_SIZE), i * PAGE_SIZE, PAGE_CACHEABLE | PAGE_EXEC, KA2PA(dba));
                 }

arch/amd64/src/pm.c

@@ -109 +109 @@
 };
 
-struct ptr_16_64 gdtr = {.limit = sizeof(gdtr), .base= (__u64)KA2PA(&gdt) };
-
 struct idescriptor idt[IDT_ITEMS];
+
+struct ptr_16_64 gdtr = {.limit = sizeof(gdt), .base= (__u64) &gdt };
+struct ptr_16_64 idtr = {.limit = sizeof(idt), .base= (__u64) &idt };
 
 static struct tss tss;
@@ -217 +218 @@
 void pm_init(void)
 {
-        struct descriptor *gdt_p = (struct descriptor *) PA2KA(gdtr.base);
+        struct descriptor *gdt_p = (struct descriptor *) gdtr.base;
         struct tss_descriptor *tss_desc;
 
@@ -249 +250 @@
         gdt_tss_setlimit(&gdt_p[TSS_DES], sizeof(struct tss) - 1);
 
+        __asm__("lgdt %0" : : "m"(gdtr));
+        __asm__("lidt %0" : : "m"(idtr));
         /*
          * As of this moment, the current CPU has its own GDT pointing