x86/entry/64: Remove unneeded kernel CR3 switching

Lai Jiangshan · KAGA-KOKO · commit c75890700455 · 2020-06-11T15:14:31.000+02:00
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
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
@@ -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:
