commit a0d58c9741e4ef42f5fbdfb2a6b86f03c6e9092f
author Andi Kleen <ak@suse.de> Mon Sep 12 18:49:24 2005 +0200
committer Linus Torvalds <torvalds@g5.osdl.org> Mon Sep 12 10:50:57 2005 -0700
tree aa51f2bb353ba48670ecb82a3137730c5021ccb6
parent 1209140c3c70aaa32d1a0462d79557f2a44a4ef8

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

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/x86_64/kernel/init_task.c

diff --git a/arch/x86_64/kernel/init_task.c b/arch/x86_64/kernel/init_task.c
index c4dc914..e0ba5c1 100644
--- a/arch/x86_64/kernel/init_task.c
+++ b/arch/x86_64/kernel/init_task.c
@@ -44,6 +44,6 @@
  * 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")))

include/asm-x86_64/processor.h

diff --git a/include/asm-x86_64/processor.h b/include/asm-x86_64/processor.h
index c6461c1..03837d3 100644
--- a/include/asm-x86_64/processor.h
+++ b/include/asm-x86_64/processor.h
@@ -254,7 +254,13 @@
 	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 }