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authorDenys Vlasenko <[email protected]>2015-04-21 18:03:13 +0200
committerIngo Molnar <[email protected]>2015-04-22 08:41:44 +0200
commitac7f5dfb0348a33b2ea92a0c477103c4db45ad4e (patch)
tree1ca083075465ef080abd89ffc5a7ce164a038367
parent17be0aec74fb036eb4eb32c2268f3420a034762b (diff)
x86/asm/entry/64: Merge 32-bit execve stubs with x32 ones, as they are identical
Run-tested. Suggested-by: Brian Gerst <[email protected]> Signed-off-by: Denys Vlasenko <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Kees Cook <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Will Drewry <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Ingo Molnar <[email protected]>
-rw-r--r--arch/x86/kernel/entry_64.S23
1 files changed, 5 insertions, 18 deletions
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 3c78a15a537d..e952f6bf1d6d 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -525,40 +525,27 @@ GLOBAL(stub_execveat)
CFI_ENDPROC
END(stub_execveat)
-#ifdef CONFIG_X86_X32_ABI
+#if defined(CONFIG_X86_X32_ABI) || defined(CONFIG_IA32_EMULATION)
.align 8
GLOBAL(stub_x32_execve)
+GLOBAL(stub32_execve)
CFI_STARTPROC
DEFAULT_FRAME 0, 8
call compat_sys_execve
jmp return_from_execve
CFI_ENDPROC
+END(stub32_execve)
END(stub_x32_execve)
.align 8
GLOBAL(stub_x32_execveat)
- CFI_STARTPROC
- DEFAULT_FRAME 0, 8
- call compat_sys_execveat
- jmp return_from_execve
- CFI_ENDPROC
-END(stub_x32_execveat)
-#endif
-
-#ifdef CONFIG_IA32_EMULATION
- .align 8
-GLOBAL(stub32_execve)
- CFI_STARTPROC
- call compat_sys_execve
- jmp return_from_execve
- CFI_ENDPROC
-END(stub32_execve)
- .align 8
GLOBAL(stub32_execveat)
CFI_STARTPROC
+ DEFAULT_FRAME 0, 8
call compat_sys_execveat
jmp return_from_execve
CFI_ENDPROC
END(stub32_execveat)
+END(stub_x32_execveat)
#endif
/*