[PATCH] x86: Remove now-unused save_rest

[Borislav Petkov]

b3af11afe06a ("x86: get rid of pt_regs argument of iopl(2)") dropped
PTREGSCALL which was also the last user of save_rest. Drop that
now-unused function too.

Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
---
 arch/x86/kernel/entry_64.S | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 1b69951a81e2..b077f4cc225a 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -487,21 +487,6 @@ ENDPROC(native_usergs_sysret64)
 	TRACE_IRQS_OFF
 	.endm
 
-ENTRY(save_rest)
-	PARTIAL_FRAME 1 (REST_SKIP+8)
-	movq 5*8+16(%rsp), %r11	/* save return address */
-	movq_cfi rbx, RBX+16
-	movq_cfi rbp, RBP+16
-	movq_cfi r12, R12+16
-	movq_cfi r13, R13+16
-	movq_cfi r14, R14+16
-	movq_cfi r15, R15+16
-	movq %r11, 8(%rsp)	/* return address */
-	FIXUP_TOP_OF_STACK %r11, 16
-	ret
-	CFI_ENDPROC
-END(save_rest)
-
 /* save complete stack frame */
 	.pushsection .kprobes.text, "ax"
 ENTRY(save_paranoid)
-- 
1.8.0

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