From: Kees Cook <keescook@chromium.org>
Date: Wed, 20 Sep 2017 20:49:59 +0000 (-0700)
Subject: arm64: Always use REFCOUNT_FULL
X-Git-Tag: android-x86-8.1-r1~2261^2~72
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=4adcec1164de863ef8bcf2cdffa0ea09de2a08d3;p=android-x86%2Fkernel.git

arm64: Always use REFCOUNT_FULL

As discussed at the Linux Security Summit, arm64 prefers to use
REFCOUNT_FULL by default. This enables it for the architecture.

Cc: hw.likun@huawei.com
Cc: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
---

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 0df64a6a56d4..9fe7a7f4c94c 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -119,6 +119,7 @@ config ARM64
 	select PCI_ECAM if ACPI
 	select POWER_RESET
 	select POWER_SUPPLY
+	select REFCOUNT_FULL
 	select SPARSE_IRQ
 	select SYSCTL_EXCEPTION_TRACE
 	select THREAD_INFO_IN_TASK