[tip:locking/core] locking/refcounts, x86/asm: Enable CONFIG_ARCH_HAS_REFCOUNT

[tip-bot for Kees Cook]

Commit-ID:  39208aa7ecb7d9c4e86df782b5693270313cbab1
Gitweb:     https://git.kernel.org/tip/39208aa7ecb7d9c4e86df782b5693270313cbab1
Author:     Kees Cook <keescook@xxxxxxxxxxxx>
AuthorDate: Sat, 2 Sep 2017 13:09:46 -0700
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Thu, 28 Sep 2017 09:45:05 +0200

locking/refcounts, x86/asm: Enable CONFIG_ARCH_HAS_REFCOUNT

With the section inlining bug fixed for the x86 refcount protection,
we can turn the config back on.

Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Cc: Elena <elena.reshetova@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: linux-arch <linux-arch@xxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1504382986-49301-3-git-send-email-keescook@xxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 arch/x86/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 971feac..9053564 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -55,7 +55,7 @@ config X86
 	select ARCH_HAS_KCOV			if X86_64
 	select ARCH_HAS_PMEM_API		if X86_64
 	# Causing hangs/crashes, see the commit that added this change for details.
-	select ARCH_HAS_REFCOUNT		if BROKEN
+	select ARCH_HAS_REFCOUNT
 	select ARCH_HAS_UACCESS_FLUSHCACHE	if X86_64
 	select ARCH_HAS_SET_MEMORY
 	select ARCH_HAS_SG_CHAIN