diff options
| author | Andy Lutomirski | 2015-03-10 19:05:59 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2015-03-17 09:25:27 +0100 |
| commit | d9e05cc5a53246e074dc2b84956252e4bbe392cd (patch) | |
| tree | 8c65d6e6cfc5587c54934c5ee633277e5d2f6e8b /arch/x86/kernel/process.c | |
| parent | x86/asm/entry: Create and use a 'TOP_OF_KERNEL_STACK_PADDING' macro (diff) | |
| download | kernel-qcow2-linux-d9e05cc5a53246e074dc2b84956252e4bbe392cd.tar.gz kernel-qcow2-linux-d9e05cc5a53246e074dc2b84956252e4bbe392cd.tar.xz kernel-qcow2-linux-d9e05cc5a53246e074dc2b84956252e4bbe392cd.zip | |
x86/asm/entry: Unify and fix initial thread_struct::sp0 values
x86_32 and x86_64 need slightly different thread_struct::sp0 values, and
x86_32's was incorrect for init.
This never mattered -- the init thread never runs user code, so we never
used thread_struct::sp0 for anything.
Fix it and mostly unify them.
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1b810c1d2e797e27bb4a7708c426101161edd1f6.1426009661.git.luto@amacapital.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/process.c')
| -rw-r--r-- | arch/x86/kernel/process.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index f4c0af7fc3a0..12b1cf606ddf 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -39,7 +39,7 @@ */ __visible DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, cpu_tss) = { .x86_tss = { - .sp0 = (unsigned long)&init_stack + sizeof(init_stack), + .sp0 = TOP_OF_INIT_STACK, #ifdef CONFIG_X86_32 .ss0 = __KERNEL_DS, .ss1 = __KERNEL_CS, |