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Message-Id: <1490811363-93944-7-git-send-email-keescook@chromium.org>
Date: Wed, 29 Mar 2017 11:15:58 -0700
From: Kees Cook <keescook@...omium.org>
To: kernel-hardening@...ts.openwall.com
Cc: Kees Cook <keescook@...omium.org>,
Mark Rutland <mark.rutland@....com>,
Andy Lutomirski <luto@...nel.org>,
Hoeun Ryu <hoeun.ryu@...il.com>,
PaX Team <pageexec@...email.hu>,
Emese Revfy <re.emese@...il.com>,
Russell King <linux@...linux.org.uk>,
x86@...nel.org,
linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: [RFC v2][PATCH 06/11] ARM: domains: Extract common USER domain init
Everything but the USER domain is the same with CONFIG_CPU_SW_DOMAIN_PAN
or not. This extracts the differences for a common DACR_INIT macro so it
is easier to make future changes (like adding the WR_RARE domain).
Signed-off-by: Kees Cook <keescook@...omium.org>
---
arch/arm/include/asm/domain.h | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/arm/include/asm/domain.h b/arch/arm/include/asm/domain.h
index 99d9f630d6b6..8b33bd7f6bf9 100644
--- a/arch/arm/include/asm/domain.h
+++ b/arch/arm/include/asm/domain.h
@@ -59,18 +59,18 @@
#define domain_val(dom,type) ((type) << (2 * (dom)))
#ifdef CONFIG_CPU_SW_DOMAIN_PAN
-#define DACR_INIT \
- (domain_val(DOMAIN_USER, DOMAIN_NOACCESS) | \
- domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \
- domain_val(DOMAIN_IO, DOMAIN_CLIENT) | \
- domain_val(DOMAIN_VECTORS, DOMAIN_CLIENT))
+#define __DACR_INIT_USER \
+ domain_val(DOMAIN_USER, DOMAIN_NOACCESS)
#else
+#define __DACR_INIT_USER \
+ domain_val(DOMAIN_USER, DOMAIN_CLIENT)
+#endif
+
#define DACR_INIT \
- (domain_val(DOMAIN_USER, DOMAIN_CLIENT) | \
+ (__DACR_INIT_USER | \
domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \
domain_val(DOMAIN_IO, DOMAIN_CLIENT) | \
domain_val(DOMAIN_VECTORS, DOMAIN_CLIENT))
-#endif
#define __DACR_DEFAULT \
domain_val(DOMAIN_KERNEL, DOMAIN_CLIENT) | \
--
2.7.4
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