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x86/entry: Cleanup PARAVIRT

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Since commit 5c8f6a2e316e ("x86/xen: Add
xenpv_restore_regs_and_return_to_usermode()") Xen will no longer reach
this code and we can do away with the paravirt
SWAPGS/INTERRUPT_RETURN.

Suggested-by: Andrew Cooper <Andrew.Cooper3@citrix.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20220308154317.756014488@infradead.org
This commit is contained in:
Peter Zijlstra 2022-03-08 16:30:21 +01:00
parent ba27d1a808
commit 6cf3e4c0d2
1 changed files with 2 additions and 2 deletions
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arch/x86/entry/entry_64.S
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@ -608,8 +608,8 @@ SYM_INNER_LABEL(swapgs_restore_regs_and_return_to_usermode, SYM_L_GLOBAL)
/* Restore RDI. */
popq %rdi
SWAPGS
INTERRUPT_RETURN
swapgs
jmp native_iret
SYM_INNER_LABEL(restore_regs_and_return_to_kernel, SYM_L_GLOBAL)