diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-03-10 13:46:33 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-03-28 16:22:33 +0100 |
| commit | fc56ed063e52cca89e42b56f472d40796df28471 (patch) | |
| tree | 478475fd8d834dffcebfe1523763ad619889911a | |
| parent | f60877e9393b6e345b3490d947843f754843d001 (diff) | |
gdt: 64bit Variant
There is no segmentation in 64bit mode.
* i386/i386/gdt.c (gdt_init): Do not load segments on 64bit.
| -rw-r--r-- | i386/i386/gdt.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/i386/i386/gdt.c b/i386/i386/gdt.c index c895eb3a..bc36031b 100644 --- a/i386/i386/gdt.c +++ b/i386/i386/gdt.c @@ -94,6 +94,7 @@ gdt_init(void) We must load ds and es with 0 before loading them with KERNEL_DS because some processors will "optimize out" the loads if the previous selector values happen to be the same. */ +#ifndef __x86_64__ asm volatile("ljmp %0,$1f\n" "1:\n" "movw %w2,%%ds\n" @@ -105,6 +106,7 @@ gdt_init(void) "movw %w1,%%es\n" "movw %w1,%%ss\n" : : "i" (KERNEL_CS), "r" (KERNEL_DS), "r" (0)); +#endif #ifdef MACH_PV_PAGETABLES #if VM_MIN_KERNEL_ADDRESS != LINEAR_MIN_KERNEL_ADDRESS /* things now get shifted */ |