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| author | Glauber Costa <gcosta@redhat.com> | 2008-05-28 16:19:53 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 12:48:16 +0200 |
| commit | a939098afcfa5f81d3474782ec15c6d114e57763 (patch) | |
| tree | 62c21fb10d6b58dc8247c34e68ab5562e045b8d0 /arch/x86/kernel/setup_64.c | |
| parent | 736f12bff9d9e7b4e895c64f73b190c8383fc2a1 (diff) | |
| download | blackbird-op-linux-a939098afcfa5f81d3474782ec15c6d114e57763.tar.gz blackbird-op-linux-a939098afcfa5f81d3474782ec15c6d114e57763.zip | |
x86: move x86_64 gdt closer to i386
i386 and x86_64 used two different schemes for maintaining the gdt.
With this patch, x86_64 initial gdt table is defined in a .c file,
same way as i386 is now. Also, we call it "gdt_page", and the descriptor,
"early_gdt_descr". This way we achieve common naming, which can allow for
more code integration.
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/setup_64.c')
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index 504caeaffd58..a93300de4da9 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -81,8 +81,6 @@ #define ARCH_SETUP #endif -#include "cpu/cpu.h" - /* * Machine setup.. */ @@ -228,6 +226,23 @@ static inline void copy_edd(void) } #endif +/* Overridden in paravirt.c if CONFIG_PARAVIRT */ +void __attribute__((weak)) __init memory_setup(void) +{ + machine_specific_memory_setup(); +} + +/* Current gdt points %fs at the "master" per-cpu area: after this, + * it's on the real one. */ +void switch_to_new_gdt(void) +{ + struct desc_ptr gdt_descr; + + gdt_descr.address = (long)get_cpu_gdt_table(smp_processor_id()); + gdt_descr.size = GDT_SIZE - 1; + load_gdt(&gdt_descr); +} + /* * setup_arch - architecture-specific boot-time initializations * |
