AcoSail/kernel_optimize_test
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[PATCH] x86-64: Set the stack pointer correctly in init_thread and init_tss

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Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andi Kleen 2005-09-12 18:49:24 +02:00 committed by Linus Torvalds
parent 1209140c3c
commit a0d58c9741
2 changed files with 8 additions and 2 deletions
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2
arch/x86_64/kernel/init_task.c
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@ -44,6 +44,6 @@ EXPORT_SYMBOL(init_task);
* section. Since TSS's are completely CPU-local, we want them
* on exact cacheline boundaries, to eliminate cacheline ping-pong.
*/
DEFINE_PER_CPU(struct tss_struct, init_tss) ____cacheline_maxaligned_in_smp;
DEFINE_PER_CPU(struct tss_struct, init_tss) ____cacheline_maxaligned_in_smp = INIT_TSS;
#define ALIGN_TO_4K __attribute__((section(".data.init_task")))

8
include/asm-x86_64/processor.h
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@ -254,7 +254,13 @@ struct thread_struct {
u64 tls_array[GDT_ENTRY_TLS_ENTRIES];
} __attribute__((aligned(16)));
#define INIT_THREAD {}
#define INIT_THREAD { \
.rsp0 = (unsigned long)&init_stack + sizeof(init_stack) \
}
#define INIT_TSS { \
.rsp0 = (unsigned long)&init_stack + sizeof(init_stack) \
}
#define INIT_MMAP \
{ &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL }