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x86/entry/64: Remove pointless jump in paranoid_exit

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Jump directly to restore_regs_and_return_to_kernel instead of making
a pointless extra jump through .Lparanoid_exit_restore

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20191023123117.779277679@linutronix.de
This commit is contained in:
Thomas Gleixner
2019-10-23 14:27:07 +02:00
parent df1a752474
commit 45c0838314
1 changed files with 1 additions and 2 deletions
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3
arch/x86/entry/entry_64.S
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@@ -1273,12 +1273,11 @@ SYM_CODE_START_LOCAL(paranoid_exit)
/* Always restore stashed CR3 value (see paranoid_entry) */
RESTORE_CR3 scratch_reg=%rbx save_reg=%r14
SWAPGS_UNSAFE_STACK
jmp .Lparanoid_exit_restore
jmp restore_regs_and_return_to_kernel
.Lparanoid_exit_no_swapgs:
TRACE_IRQS_IRETQ_DEBUG
/* Always restore stashed CR3 value (see paranoid_entry) */
RESTORE_CR3 scratch_reg=%rbx save_reg=%r14
.Lparanoid_exit_restore:
jmp restore_regs_and_return_to_kernel
SYM_CODE_END(paranoid_exit)