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Will Deacon bf8801145c ARM: 7496/1: hw_breakpoint: don't rely on dfsr to show watchpoint access type 
From ARM debug architecture v7.1 onwards, a watchpoint exception causes
the DFAR to be updated with the faulting data address. However, DFSR.WnR
takes an UNKNOWN value and therefore cannot be used in general to
determine the access type that triggered the watchpoint.

This patch forbids watchpoints without an overflow handler from
specifying a specific access type (load/store). Those with overflow
handlers must be able to handle false positives potentially triggered by
a watchpoint of a different access type on the same address. For
SIGTRAP-based handlers (i.e. ptrace), this should have no impact.

Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-08-25 09:15:23 +01:00
..
.gitignore
…
arch_timer.c
Merge branches 'audit', 'delay', 'fixes', 'misc' and 'sta2x11' into for-linus
2012-07-27 23:06:32 +01:00
armksyms.c
Merge branches 'audit', 'delay', 'fixes', 'misc' and 'sta2x11' into for-linus
2012-07-27 23:06:32 +01:00
arthur.c
…
asm-offsets.c
ARM: 7114/1: cache-l2x0: add resume entry for l2 in secure mode
2011-10-17 09:11:51 +01:00
atags.c
…
atags.h
…
bios32.c
Merge branch 'topic/sebastian-devinit-fixups' into next
2012-06-18 12:14:10 -06:00
calls.S
ARM: wire up process_vm_writev and process_vm_readv syscalls
2011-11-17 16:58:00 +00:00
compat.c
ARM: deprecate support for old way to pass kernel parameters
2010-07-07 16:38:36 +02:00
compat.h
ARM: deprecate support for old way to pass kernel parameters
2010-07-07 16:38:36 +02:00
cpuidle.c
cpuidle: Add common time keeping and irq enabling
2012-03-21 01:59:40 -04:00
crash_dump.c
crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn
2011-03-23 19:47:19 -07:00
debug.S
ARM: cleanups of io includes
2012-03-29 18:02:10 -07:00
devtree.c
arm: convert core files from module.h to export.h
2011-10-31 19:30:49 -04:00
dma-isa.c
ARM: dma-isa: request cascade channel after registering it
2009-12-24 18:34:08 +00:00
dma.c
locking, ARM: Annotate low level hw locks as raw
2011-09-13 11:12:14 +02:00
early_printk.c
ARM: Add an earlyprintk debug console
2009-12-09 10:02:18 +00:00
elf.c
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
entry-armv.S
ARM: Fix undefined instruction exception handling
2012-07-31 12:04:30 +01:00
entry-common.S
ARM: 7475/1: sys_trace: allow all syscall arguments to be updated via ptrace
2012-07-28 11:11:53 +01:00
entry-header.S
Merge branch 'devel-stable' into for-next
2011-07-22 23:09:07 +01:00
etm.c
arm: fix implicit module.h users by adding it to arch/arm as required.
2011-10-31 19:30:50 -04:00
fiq.c
ARM: fiq: change FIQ_START to a variable
2012-07-01 21:59:19 +08:00
fiqasm.S
ARM: 6938/1: fiq: Refactor {get,set}_fiq_regs() for Thumb-2
2011-05-26 10:31:06 +01:00
ftrace.c
ARM: 7468/1: ftrace: Trace function entry before updating index
2012-07-31 10:30:42 +01:00
head-common.S
arm/dt: Make __vet_atags also accept a dtb image
2011-05-11 15:12:32 +02:00
head-nommu.S
ARM: move CP15 definitions to separate header file
2012-03-28 18:30:01 +01:00
head.S
ARM: 7439/1: head.S: simplify initial page table mapping
2012-07-09 17:39:39 +01:00
hw_breakpoint.c
ARM: 7496/1: hw_breakpoint: don't rely on dfsr to show watchpoint access type
2012-08-25 09:15:23 +01:00
insn.c
ARM: fix missing bug.h include in arch/arm/kernel/insn.c
2012-03-30 11:51:46 +01:00
insn.h
ARM: 7334/1: add jump label support
2012-03-24 09:38:56 +00:00
io.c
arm: convert core files from module.h to export.h
2011-10-31 19:30:49 -04:00
irq.c
ARM: at91: aic can use fast eoi handler type
2012-07-02 14:26:57 +02:00
isa.c
…
iwmmxt.S
ARM: pxa: fix logic error in PJ4 iWMMXt handling
2011-08-11 10:10:26 +08:00
jump_label.c
ARM: 7334/1: add jump label support
2012-03-24 09:38:56 +00:00
kgdb.c
kgdb,arm: fix register dump
2010-10-29 13:14:40 -05:00
kprobes-arm.c
ARM: 7181/1: Restrict kprobes probing SWP instructions to ARMv5 and below
2011-11-30 23:54:54 +00:00
kprobes-common.c
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
kprobes-test-arm.c
ARM: 7440/1: kprobes: only test 'sub pc, pc, #1b-2b+8-2' on ARMv6
2012-07-05 12:57:16 +01:00
kprobes-test-thumb.c
ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels
2011-11-26 21:58:53 +00:00
kprobes-test.c
ARM: 7209/1: Use generic ARM instruction set condition code checks for kprobes.
2011-12-13 08:52:03 +00:00
kprobes-test.h
ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels
2011-11-26 21:58:53 +00:00
kprobes-thumb.c
ARM: 7423/1: kprobes: run t32_simulate_ldr_literal() without insn slot
2012-06-14 15:11:44 +01:00
kprobes.c
Autogenerated GPG tag for Rusty D1ADB8F1: 15EE 8D6C AB0E 7F0C F999 BFCB D920 0E6C D1AD B8F1
2012-04-02 08:53:24 -07:00
kprobes.h
ARM: kprobes: Add exports for test code
2011-09-20 18:17:43 +00:00
leds.c
arm: leds: convert sysdev_class to a regular subsystem
2011-12-21 15:52:57 -08:00
machine_kexec.c
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
2012-03-29 16:53:48 -07:00
Makefile
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-21 19:43:57 -07:00
module.c
ARM: 7059/1: LPAE: Use PMD_(SHIFT|SIZE|MASK) instead of PGDIR_*
2011-08-23 15:30:33 +01:00
opcodes.c
ARM: 7206/1: Add generic ARM instruction set condition code checks.
2011-12-13 08:52:02 +00:00
patch.c
ARM: 7332/1: extract out code patch function from kprobes
2012-03-24 09:38:55 +00:00
patch.h
ARM: 7332/1: extract out code patch function from kprobes
2012-03-24 09:38:55 +00:00
perf_event_v6.c
ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration
2012-07-09 17:41:10 +01:00
perf_event_v7.c
ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration
2012-07-09 17:41:10 +01:00
perf_event_xscale.c
ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration
2012-07-09 17:41:10 +01:00
perf_event.c
Merge branches 'audit', 'delay', 'fixes', 'misc' and 'sta2x11' into for-linus
2012-07-27 23:06:32 +01:00
pj4-cp0.c
arm: remove several unnecessary module.h include instances
2011-10-31 19:30:48 -04:00
pmu.c
ARM: PMU: re-export release_pmu symbol to modules
2011-11-16 10:06:42 +00:00
process.c
ARM: 7466/1: disable interrupt before spinning endlessly
2012-07-31 10:30:31 +01:00
ptrace.c
ARM: 7474/1: get rid of TIF_SYSCALL_RESTARTSYS
2012-07-28 11:11:52 +01:00
relocate_kernel.S
ARM: 7065/1: kexec: ensure new kernel is entered in ARM state
2011-08-28 10:39:41 +01:00
return_address.c
arm: convert core files from module.h to export.h
2011-10-31 19:30:49 -04:00
sched_clock.c
ARM: 7486/1: sched_clock: update epoch_cyc on resume
2012-08-11 09:15:58 +01:00
setup.c
ARM: 7465/1: Handle >4GB memory sizes in device tree and mem=size@start option
2012-07-29 22:19:14 +01:00
signal.c
ARM: 7474/1: get rid of TIF_SYSCALL_RESTARTSYS
2012-07-28 11:11:52 +01:00
signal.h
ARM: 7471/1: Revert "7442/1: Revert "remove unused restart trampoline""
2012-07-28 11:11:51 +01:00
sleep.S
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
smp_scu.c
ARM: 7347/1: SCU: use cpu_logical_map for per-CPU low power mode
2012-04-28 17:31:37 +01:00
smp_tlb.c
smp: introduce a generic on_each_cpu_mask() function
2012-03-28 17:14:35 -07:00
smp_twd.c
Revert "ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus"
2012-04-19 19:35:10 +01:00
smp.c
ARM: 7480/1: only call smp_send_stop() on SMP
2012-07-31 10:30:44 +01:00
stacktrace.c
arm: convert core files from module.h to export.h
2011-10-31 19:30:49 -04:00
suspend.c
ARM: suspend: use idmap_pgd instead of suspend_pgd
2011-12-06 14:04:14 +00:00
swp_emulate.c
ARM: 7208/1: Add condition code checking to SWP emulation handler.
2011-12-13 08:52:03 +00:00
sys_arm.c
ARM: 7410/1: Add extra clobber registers for assembly in kernel_execve
2012-05-05 13:54:01 +01:00
sys_oabi-compat.c
userns: Convert stat to return values mapped from kuids and kgids
2012-05-15 14:08:35 -07:00
tcm.c
Disintegrate asm/system.h for ARM
2012-03-28 18:30:01 +01:00
tcm.h
…
thumbee.c
ARM: 7385/1: ThumbEE: Use cpuid macros to read ID_PFR0 for ThumbEE
2012-04-25 19:49:26 +01:00
time.c
ARM: 7413/1: move read_{boot,persistent}_clock to the architecture level
2012-05-06 11:09:21 +01:00
topology.c
ARM: 7482/1: topology: fix section mismatch warning for init_cpu_topology
2012-08-11 09:15:56 +01:00
traps.c
Merge branch 'audit' of git://git.linaro.org/people/rmk/linux-arm
2012-08-01 16:35:37 -07:00
unwind.c
ARM: unwinder: fix bisection to find origin in .idx section
2011-12-15 14:02:19 -08:00
vmlinux.lds.S
ARM: 7428/1: Prevent KALLSYM size mismatch on ARM.
2012-06-22 22:54:18 +01:00
xscale-cp0.c
arm: remove several unnecessary module.h include instances
2011-10-31 19:30:48 -04:00