x86/entry/32: Fix cpu_current_top_of_stack initialization at boot
authorAndy Lutomirski <luto@kernel.org>
Thu, 2 Nov 2017 07:59:15 +0000 (00:59 -0700)
committerIngo Molnar <mingo@kernel.org>
Thu, 2 Nov 2017 10:04:47 +0000 (11:04 +0100)
commitcd493a6deb8b78eca280d05f7fa73fd69403ae29
tree4735335d76295e8917e9f81e53ccb16dd789dce4
parent46f5a10a721ce8dce8cc8fe55279b49e1c6b3288
x86/entry/32: Fix cpu_current_top_of_stack initialization at boot

cpu_current_top_of_stack's initialization forgot about
TOP_OF_KERNEL_STACK_PADDING.  This bug didn't matter because the
idle threads never enter user mode.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bpetkov@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/e5e370a7e6e4fddd1c4e4cf619765d96bb874b21.1509609304.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/kernel/smpboot.c