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| author |   Jeremy Fitzhardinge <jeremy@goop.org> | 2007-05-02 19:27:16 +0200 |
|---|---|---|
| committer |   Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:16 +0200 |
| commit | c5413fbe894924ddb8aa474a4d4da52e7a6c7e0b (patch) | |
| tree | 8f317bf2494b6b4bceb5e6d1ee35fabc0eeb9971 /arch/i386/kernel/smpboot.c | |
| parent | [PATCH] i386: Define per_cpu_offset (diff) | |
| download | linux-dev-c5413fbe894924ddb8aa474a4d4da52e7a6c7e0b.tar.xz linux-dev-c5413fbe894924ddb8aa474a4d4da52e7a6c7e0b.zip | |
[PATCH] i386: Fix UP gdt bugs
Fixes two problems with the GDT when compiling for uniprocessor:
- There's no percpu segment, so trying to load its selector into %fs fails.
Use a null selector instead.
- The real gdt needs to be loaded at some point. Do it in cpu_init().
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to '')
| -rw-r--r-- | arch/i386/kernel/smpboot.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/i386/kernel/smpboot.c b/arch/i386/kernel/smpboot.c index f79b6233db78..7c1dbef399cd 100644 --- a/arch/i386/kernel/smpboot.c +++ b/arch/i386/kernel/smpboot.c @@ -1177,18 +1177,6 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus) smp_boot_cpus(max_cpus); } -/* Current gdt points %fs at the "master" per-cpu area: after this, - * it's on the real one. */ -static inline void switch_to_new_gdt(void) -{ - struct Xgt_desc_struct gdt_descr; - - gdt_descr.address = (long)get_cpu_gdt_table(smp_processor_id()); - gdt_descr.size = GDT_SIZE - 1; - load_gdt(&gdt_descr); - asm("mov %0, %%fs" : : "r" (__KERNEL_PERCPU) : "memory"); -} - void __init native_smp_prepare_boot_cpu(void) { unsigned int cpu = smp_processor_id(); |