diff options
| author | Brian Gerst <brgerst@gmail.com> | 2024-03-21 14:05:06 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2024-03-21 20:17:54 +0100 |
| commit | 2cb16181a1d1f93a88f2b4640e7638fc0549da93 (patch) | |
| tree | dbaada9d4d8b36039e5b3052db5e656ff9e0c956 /arch/x86/kernel/vmlinux.lds.S | |
| parent | 4ae3dc83b047d51485cce1a72be277a110d77c91 (diff) | |
x86/boot: Simplify boot stack setup
Define the symbol __top_init_kernel_stack instead of duplicating
the offset from __end_init_task in multiple places.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Uros Bizjak <ubizjak@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20240321180506.89030-1-brgerst@gmail.com
Diffstat (limited to 'arch/x86/kernel/vmlinux.lds.S')
| -rw-r--r-- | arch/x86/kernel/vmlinux.lds.S | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 56451fd2099e..91085c3430de 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -172,6 +172,9 @@ SECTIONS /* init_task */ INIT_TASK_DATA(THREAD_SIZE) + /* equivalent to task_pt_regs(&init_task) */ + __top_init_kernel_stack = __end_init_task - TOP_OF_KERNEL_STACK_PADDING - PTREGS_SIZE; + #ifdef CONFIG_X86_32 /* 32 bit has nosave before _edata */ NOSAVE_DATA |