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x86/entry/64: Remove unneeded kernel CR3 switching 

When native_load_gs_index() fails on .Lgs_change, CR3 must be kernel
CR3. No need to switch it.

Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200419144049.1906-2-laijs@linux.alibaba.com
This commit is contained in:
Lai Jiangshan 2020-04-19 14:40:47 +00:00 committed by Thomas Gleixner
parent 26fa1263b0
commit c758907004
1 changed files with 0 additions and 1 deletions
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arch/x86/entry/entry_64.S
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@ -1334,7 +1334,6 @@ SYM_CODE_START_LOCAL(error_entry)
*/
SWAPGS
FENCE_SWAPGS_USER_ENTRY
SWITCH_TO_KERNEL_CR3 scratch_reg=%rax
jmp .Lerror_entry_done
.Lbstep_iret: