x86: Remove now-unused save_rest()

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.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Link: http://lkml.kernel.org/r/1378546750-19727-1-git-send-email-bp@suse.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 1b69951a81e2b61bff752621872d5750736f96d4..b077f4cc225a29764e89389e099fbd0ae2006707 100644 (file)
--- 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)