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authorLinus Torvalds <torvalds@linux-foundation.org>2012-04-15 17:35:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-04-15 17:35:19 -0700
commit9a8e5d41124a7352e554581333d4d9689dc1526b (patch)
tree88e74fe2cdca5ca2d1d5424a728ade00a12f05d3 /arch/arm/mm
parent12e993b89464707398e4209bd99983e376454985 (diff)
parent708e5978dfee0090a27c5531ce3b017dd6d190a2 (diff)
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King: "Nothing too disasterous, the biggest thing being the removal of the regulator support for vcore in the AMBA driver; only one SoC was using this and it got broken during the last merge window, which then started causing problems for other people. Mutual agreement was reached for it to be removed." * 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7386/1: jump_label: fixup for rename to static_key ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus ARM: 7383/1: nommu: populate vectors page from paging_init ARM: 7381/1: nommu: fix typo in mm/Kconfig ARM: 7380/1: DT: do not add a zero-sized memory property ARM: 7379/1: DT: fix atags_to_fdt() second call site ARM: 7366/3: amba: Remove AMBA level regulator support ARM: 7377/1: vic: re-read status register before dispatching each IRQ handler ARM: 7368/1: fault.c: correct how the tsk->[maj|min]_flt gets incremented
Diffstat (limited to 'arch/arm/mm')
-rw-r--r--arch/arm/mm/Kconfig2
-rw-r--r--arch/arm/mm/fault.c2
-rw-r--r--arch/arm/mm/nommu.c2
-rw-r--r--arch/arm/mm/proc-v7.S12
4 files changed, 16 insertions, 2 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 7edef9121632..7c8a7d8467bf 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -723,7 +723,7 @@ config CPU_HIGH_VECTOR
bool "Select the High exception vector"
help
Say Y here to select high exception vector(0xFFFF0000~).
- The exception vector can be vary depending on the platform
+ The exception vector can vary depending on the platform
design in nommu mode. If your platform needs to select
high exception vector, say Y.
Otherwise or if you are unsure, say N, and the low exception
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index 9055b5a84ec5..f07467533365 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -320,7 +320,7 @@ retry:
*/
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, addr);
- if (flags & FAULT_FLAG_ALLOW_RETRY) {
+ if (!(fault & VM_FAULT_ERROR) && flags & FAULT_FLAG_ALLOW_RETRY) {
if (fault & VM_FAULT_MAJOR) {
tsk->maj_flt++;
perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 6486d2f253cd..d51225f90ae2 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -13,6 +13,7 @@
#include <asm/sections.h>
#include <asm/page.h>
#include <asm/setup.h>
+#include <asm/traps.h>
#include <asm/mach/arch.h>
#include "mm.h"
@@ -39,6 +40,7 @@ void __init sanity_check_meminfo(void)
*/
void __init paging_init(struct machine_desc *mdesc)
{
+ early_trap_init((void *)CONFIG_VECTORS_BASE);
bootmem_init();
}
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index f1c8486f7501..c2e2b66f72b5 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -255,6 +255,18 @@ __v7_setup:
mcr p15, 0, r5, c10, c2, 0 @ write PRRR
mcr p15, 0, r6, c10, c2, 1 @ write NMRR
#endif
+#ifndef CONFIG_ARM_THUMBEE
+ mrc p15, 0, r0, c0, c1, 0 @ read ID_PFR0 for ThumbEE
+ and r0, r0, #(0xf << 12) @ ThumbEE enabled field
+ teq r0, #(1 << 12) @ check if ThumbEE is present
+ bne 1f
+ mov r5, #0
+ mcr p14, 6, r5, c1, c0, 0 @ Initialize TEEHBR to 0
+ mrc p14, 6, r0, c0, c0, 0 @ load TEECR
+ orr r0, r0, #1 @ set the 1st bit in order to
+ mcr p14, 6, r0, c0, c0, 0 @ stop userspace TEEHBR access
+1:
+#endif
adr r5, v7_crval
ldmia r5, {r5, r6}
#ifdef CONFIG_CPU_ENDIAN_BE8