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Linus Walleij 90f92c631b ARM: 8613/1: Fix the uaccess crash on PB11MPCore 
The following patch was sketched by Russell in response to my
crashes on the PB11MPCore after the patch for software-based
priviledged no access support for ARMv8.1. See this thread:
http://marc.info/?l=linux-arm-kernel&m=144051749807214&w=2

I am unsure what is going on, I suspect everyone involved in
the discussion is. I just want to repost this to get the
discussion restarted, as I still have to apply this patch
with every kernel iteration to get my PB11MPCore Realview
running.

Testing by Neil Armstrong on the Oxnas NAS has revealed that
this bug exist also on that widely deployed hardware, so
we are probably currently regressing all ARM11MPCore systems.

Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Fixes: a5e090acbf54 ("ARM: software-based priviledged-no-access support")
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2017-01-16 17:30:46 +00:00
..
.gitignore
…
arch_timer.c
arch_timer: Move to generic sched_clock framework
2013-10-09 16:54:10 -07:00
armksyms.c
Revert "arm: move exports to definitions"
2016-11-23 10:00:03 +00:00
asm-offsets.c
ARM: save and reset the address limit when entering an exception
2016-07-07 16:01:01 +01:00
atags_compat.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
atags_parse.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
atags_proc.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
atags.h
ARM: 8495/1: ATAGS: move save_atags() to arch/arm/include/asm/setup.h
2016-01-04 11:26:00 +00:00
bios32.c
Merge branches 'pci/demodularize-hosts' and 'pci/host-request-windows' into next
2016-08-01 12:23:57 -05:00
cpuidle.c
ARM: 8595/2: apply more __ro_after_init
2016-08-12 16:47:06 +01:00
crash_dump.c
ARM: 8012/1: kdump: Avoid overflow when converting pfn to physaddr
2014-04-07 12:10:00 +01:00
debug.S
ARM: unify MMU/!MMU addruart calls
2015-05-20 23:09:51 +02:00
devtree.c
ARM: 8616/1: dt: Respect property size when parsing CPUs
2016-09-29 16:57:43 +01:00
dma-isa.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
dma.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
early_printk.c
early_printk: consolidate random copies of identical code
2013-04-29 18:28:13 -07:00
efi.c
ARM/efi: Apply strict permissions for UEFI Runtime Services regions
2016-04-28 11:33:53 +02:00
elf.c
…
entry-armv.S
ARM: fix address limit restoration for undefined instructions
2016-08-09 22:57:59 +01:00
entry-common.S
ARM: convert to generated system call tables
2016-10-18 21:34:06 +01:00
entry-ftrace.S
Revert "arm: move exports to definitions"
2016-11-23 10:00:03 +00:00
entry-header.S
ARM: save and reset the address limit when entering an exception
2016-07-07 16:01:01 +01:00
entry-v7m.S
ARM: rename S_FRAME_SIZE to PT_REGS_SIZE
2016-06-22 19:54:28 +01:00
fiq.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
fiqasm.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
ftrace.c
ftrace: Add return address pointer to ftrace_ret_stack
2016-08-24 12:15:14 +02:00
head-common.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
head-nommu.S
ARM: 8607/1: V7M: Wire up caches for V7M processors with cache support.
2016-09-06 15:51:08 +01:00
head.S
Revert "arm: move exports to definitions"
2016-11-23 10:00:03 +00:00
hibernate.c
ARM: use virt_to_idmap() for soft_restart()
2016-02-08 15:48:32 +00:00
hw_breakpoint.c
ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs
2017-01-10 23:32:26 +00:00
hyp-stub.S
ARM: 8600/1: Enforce some NS-SVC initialisation
2016-08-23 10:08:33 +01:00
insn.c
…
io.c
ARM: io.c: clean up EXPORT_SYMBOL()s
2014-11-21 15:25:02 +00:00
irq.c
ARM: 8499/1: irq: l2c: do not print error in case of missing l2c from
2016-01-26 23:49:02 +00:00
isa.c
arm: convert use of typedef ctl_table to struct ctl_table
2014-06-06 16:08:15 -07:00
iwmmxt.S
ARM: 8221/1: PJ4: allow building in Thumb-2 mode
2014-12-03 16:08:00 +00:00
jump_label.c
jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}
2015-08-03 11:34:12 +02:00
kgdb.c
ARM: 8428/1: kgdb: Fix registers on sleeping tasks
2015-10-03 16:36:45 +01:00
machine_kexec.c
ARM: kexec: fix kexec for Keystone 2
2016-08-02 19:35:29 -04:00
Makefile
Revert "arm: move exports to definitions"
2016-11-23 10:00:03 +00:00
module-plts.c
ARM: kernel: avoid brute force search on PLT generation
2016-08-30 17:45:34 +01:00
module.c
ARM: 8518/1: Use correct symbols for XIP_KERNEL
2016-02-11 15:43:14 +00:00
module.lds
ARM: kernel: merge core and init PLTs
2016-08-30 17:45:34 +01:00
opcodes.c
…
paravirt.c
arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops
2015-12-21 14:40:54 +00:00
patch.c
ARM: probes: move all probe code to dedicate directory
2015-01-09 09:36:50 +00:00
perf_callchain.c
perf core: Add a 'nr' field to perf_event_callchain_context
2016-05-16 23:11:51 -03:00
perf_event_v6.c
arm: perf: factor arm_pmu core out to drivers
2015-07-31 15:01:14 +01:00
perf_event_v7.c
arm: perf: move to common attr_group fields
2016-09-09 14:51:51 +01:00
perf_event_xscale.c
arm: perf: factor arm_pmu core out to drivers
2015-07-31 15:01:14 +01:00
perf_regs.c
perf: Move task_pt_regs sampling into arch code
2015-01-09 11:12:28 +01:00
pj4-cp0.c
ARM: 8452/3: PJ4: make coprocessor access sequences buildable in Thumb2 mode
2016-01-04 11:12:10 +00:00
process.c
ARM: use simpler API for random address requests
2016-10-11 15:06:32 -07:00
psci_smp.c
ARM: use const and __initconst for smp_operations
2015-12-01 22:17:45 +01:00
ptrace.c
arm/ptrace: run seccomp after ptrace
2016-06-14 10:54:42 -07:00
reboot.c
ARM: 8568/1: reboot: remove duplicated local_irq_disable()
2016-05-05 19:02:09 +01:00
reboot.h
ARM: move reboot code to arch/arm/kernel/reboot.c
2015-04-02 09:50:45 +01:00
relocate_kernel.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
return_address.c
ARM: 8328/1: remove empty preprocessor #else branch
2015-03-28 16:54:53 +00:00
setup.c
ARM: 8604/1: V7M: Add support for reading the CTR with read_cpuid_cachetype()
2016-09-06 15:51:07 +01:00
signal.c
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
2015-09-19 21:05:02 -07:00
sigreturn_codes.S
ARM: 7895/1: signal: fix armv7-m build issue in sigreturn_codes.S
2013-11-30 22:21:00 +00:00
sleep.S
ARM: fix new BSYM() usage introduced via for-arm-soc branch
2015-06-12 21:19:35 +01:00
smccc-call.S
Revert "arm: move exports to definitions"
2016-11-23 10:00:03 +00:00
smp_scu.c
ARM: 8122/1: smp_scu: enable SCU standby support
2014-08-02 08:51:53 +01:00
smp_tlb.c
ARM: 8613/1: Fix the uaccess crash on PB11MPCore
2017-01-16 17:30:46 +00:00
smp_twd.c
cpu/hotplug: Cleanup state names
2016-12-25 10:47:44 +01:00
smp.c
nmi_backtrace: do a local dump_stack() instead of a self-NMI
2016-10-07 18:46:30 -07:00
stacktrace.c
ARM: 8172/1: Use current_stack_pointer in save_stack_trace_tsk
2014-11-13 23:58:03 +00:00
suspend.c
ARM: 8248/1: pm: remove outdated comment
2015-01-21 15:58:57 +00:00
swp_emulate.c
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00
sys_arm.c
arm: switch to generic fork/vfork/clone
2012-11-28 22:13:54 -05:00
sys_oabi-compat.c
arm: oabi compat: add missing access checks
2016-08-10 12:57:45 -07:00
tcm.c
ARM: 8388/1: tcm: Don't crash when TCM banks are protected by TrustZone
2015-06-06 10:37:28 +01:00
thumbee.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
time.c
clocksource: cosmetic: Drop OF 'dependency' from symbols
2015-10-01 02:18:39 +02:00
topology.c
ARM: 8622/3: add sysfs cpu_capacity attribute
2016-11-22 11:45:08 +00:00
traps.c
ARM: fix backtrace
2016-11-15 15:25:39 +00:00
unwind.c
ARM: 8176/1: Use current_stack_pointer in unwind_backtrace
2014-11-13 23:58:09 +00:00
v7m.c
ARM: 7828/1: ARMv7-M: implement restart routine common to all v7-M machines
2013-09-02 13:49:29 +01:00
vdso.c
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
2016-10-06 07:59:37 -07:00
vmlinux-xip.lds.S
ARM: Fix XIP kernels
2016-11-16 23:51:19 +00:00
vmlinux.lds.S
nmi_backtrace: generate one-line reports for idle cpus
2016-10-07 18:46:30 -07:00
xscale-cp0.c
ARM: make xscale iwmmxt code multiplatform aware
2015-12-01 21:44:24 +01:00