From 97a98ae5b8acf08d07d972c087b2def060bc9b73 Mon Sep 17 00:00:00 2001
From: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Date: Tue, 17 Jan 2017 21:10:11 +0100
Subject: ARM: 8642/1: LPAE: catch pending imprecise abort on unmask

Asynchronous external abort is coded differently in DFSR with LPAE enabled.

Fixes: 9254970c "ARM: 8447/1: catch pending imprecise abort on unmask".
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/mm/fault.c | 4 ++--
 arch/arm/mm/fault.h | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)

(limited to 'arch/arm')

diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index 3a2e678b8d30..0122ad1a6027 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -610,9 +610,9 @@ static int __init early_abort_handler(unsigned long addr, unsigned int fsr,
 
 void __init early_abt_enable(void)
 {
-	fsr_info[22].fn = early_abort_handler;
+	fsr_info[FSR_FS_AEA].fn = early_abort_handler;
 	local_abt_enable();
-	fsr_info[22].fn = do_bad;
+	fsr_info[FSR_FS_AEA].fn = do_bad;
 }
 
 #ifndef CONFIG_ARM_LPAE
diff --git a/arch/arm/mm/fault.h b/arch/arm/mm/fault.h
index 67532f242271..afc1f84e763b 100644
--- a/arch/arm/mm/fault.h
+++ b/arch/arm/mm/fault.h
@@ -11,11 +11,15 @@
 #define FSR_FS5_0		(0x3f)
 
 #ifdef CONFIG_ARM_LPAE
+#define FSR_FS_AEA		17
+
 static inline int fsr_fs(unsigned int fsr)
 {
 	return fsr & FSR_FS5_0;
 }
 #else
+#define FSR_FS_AEA		22
+
 static inline int fsr_fs(unsigned int fsr)
 {
 	return (fsr & FSR_FS3_0) | (fsr & FSR_FS4) >> 6;
-- 
cgit 


From 228dbbfb5d77f8e047b2a1d78da14b7158433027 Mon Sep 17 00:00:00 2001
From: Dave Martin <Dave.Martin@arm.com>
Date: Wed, 18 Jan 2017 17:11:56 +0100
Subject: ARM: 8643/3: arm/ptrace: Preserve previous registers for short regset
 write

Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.

Cc: <stable@vger.kernel.org> # 3.0.x-
Fixes: 5be6f62b0059 ("ARM: 6883/1: ptrace: Migrate to regsets framework")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/kernel/ptrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/arm')

diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index ce131ed5939d..ae738a6319f6 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -600,7 +600,7 @@ static int gpr_set(struct task_struct *target,
 		   const void *kbuf, const void __user *ubuf)
 {
 	int ret;
-	struct pt_regs newregs;
+	struct pt_regs newregs = *task_pt_regs(target);
 
 	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
 				 &newregs,
-- 
cgit