[PATCH 2/6] ARM: mmu: Add VBAR setup

[Andrey Smirnov]

Add code to make sure that normal vector exception table, when it is
used due to unavailability of the high vector table, was not re-mapped
from 0x0 via VBAR by someone else before us.

Signed-off-by: Andrey Smirnov <andrew.smirnov at gmail.com>
---
 arch/arm/cpu/mmu.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c
index 784221c..e32523b 100644
--- a/arch/arm/cpu/mmu.c
+++ b/arch/arm/cpu/mmu.c
@@ -302,6 +302,12 @@ static void vectors_init(void)
 		 * live without being able to catch NULL pointer dereferences
 		 */
 		exc = arm_create_pte(0x0);
+
+		/*
+		  Make sure that vecotrs are not re-mapped from 0x0
+		  via VBAR (no-op on non-ARMv7)
+		 */
+		set_vbar(0x0);
 	}

 	arm_fixup_vectors();
--
2.5.0