[tip:x86/asm] x86/compat: Check for both 32-bit compat and x32 in get_gate_vma()

From: tip-bot for Brian Gerst
Date: Mon Jul 06 2015 - 11:49:11 EST


Commit-ID: c338867d0e4224771c68d0a7727289b86c23eccd
Gitweb: http://git.kernel.org/tip/c338867d0e4224771c68d0a7727289b86c23eccd
Author: Brian Gerst <brgerst@xxxxxxxxx>
AuthorDate: Mon, 22 Jun 2015 07:55:16 -0400
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 6 Jul 2015 15:28:57 +0200

x86/compat: Check for both 32-bit compat and x32 in get_gate_vma()

Change this to CONFIG_COMPAT so both 32-bit compat and x32 will
do the check.

Signed-off-by: Brian Gerst <brgerst@xxxxxxxxx>
Acked-by: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Denys Vlasenko <dvlasenk@xxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1434974121-32575-8-git-send-email-brgerst@xxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/entry/vsyscall/vsyscall_64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/entry/vsyscall/vsyscall_64.c b/arch/x86/entry/vsyscall/vsyscall_64.c
index 2dcc6ff..26a46f4 100644
--- a/arch/x86/entry/vsyscall/vsyscall_64.c
+++ b/arch/x86/entry/vsyscall/vsyscall_64.c
@@ -290,7 +290,7 @@ static struct vm_area_struct gate_vma = {

struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
{
-#ifdef CONFIG_IA32_EMULATION
+#ifdef CONFIG_COMPAT
if (!mm || mm->context.ia32_compat)
return NULL;
#endif
--
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