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x86/entry/64: Split the IRET-to-user and IRET-to-kernel paths

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These code paths will diverge soon.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
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/dccf8c7b3750199b4b30383c812d4e2931811509.1509609304.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Andy Lutomirski
2017-11-02 00:58:59 -07:00
committed by Ingo Molnar
parent 9da78ba6b4
commit 26c4ef9c49
3 changed files with 27 additions and 11 deletions
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arch/x86/kernel/head_64.S
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@@ -326,7 +326,7 @@ early_idt_handler_common:
20:
decl early_recursion_flag(%rip)
jmp restore_regs_and_iret
jmp restore_regs_and_return_to_kernel
END(early_idt_handler_common)
__INITDATA