Russell King 5bcb9c842a ARM: avoid faulting on qemu ...

commit 3aaf33bebd upstream.

When qemu starts a kernel in a bare environment, the default SCR has
the AW and FW bits clear, which means that the kernel can't modify
the PSR A or PSR F bits, and means that FIQs and imprecise aborts are
always masked.

When running uboot under qemu, the AW and FW SCR bits are set, and the
kernel functions normally - and this is how real hardware behaves.

Fix this for qemu by ignoring the FIQ bit.

Fixes: 8bafae202c ("ARM: BUG if jumping to usermode address in kernel mode")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Alex Shi <alex.shi@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-12-14 09:28:16 +01:00

..

.gitignore

…

arch_timer.c

arch_timer: Move to generic sched_clock framework

2013-10-09 16:54:10 -07:00

armksyms.c

arm: kernel: Add SMC structure parameter

2017-04-12 12:41:21 +02:00

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

calls.S

ARM: wire up new pkey syscalls

2016-10-19 10:18:47 +01:00

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

Disintegrate asm/system.h for ARM

2012-03-28 18:30:01 +01:00

entry-armv.S

ARM: fix address limit restoration for undefined instructions

2016-08-09 22:57:59 +01:00

entry-common.S

ARM: rename S_FRAME_SIZE to PT_REGS_SIZE

2016-06-22 19:54:28 +01:00

entry-ftrace.S

Revert "arm: move exports to definitions"

2016-11-23 10:00:03 +00:00

entry-header.S

ARM: avoid faulting on qemu

2017-12-14 09:28:16 +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

2017-01-26 08:24:40 +01:00

hyp-stub.S

ARM: 8600/1: Enforce some NS-SVC initialisation

2016-08-23 10:08:33 +01:00

insn.c

ARM: fix missing bug.h include in arch/arm/kernel/insn.c

2012-03-30 11:51:46 +01:00

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: 8662/1: module: split core and init PLT sections

2017-05-25 15:44:44 +02:00

module.c

ARM: 8518/1: Use correct symbols for XIP_KERNEL

2016-02-11 15:43:14 +00:00

module.lds

ARM: 8662/1: module: split core and init PLT sections

2017-05-25 15:44:44 +02:00

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: 8643/3: arm/ptrace: Preserve previous registers for short regset write

2017-02-14 15:25:35 -08:00

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: 8637/1: Adjust memory boundaries after reservations

2017-06-14 15:06:05 +02:00

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

arm: kernel: Add SMC structure parameter

2017-04-12 12:41:21 +02:00

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

2017-01-26 08:24:43 +01:00

smp_twd.c

arm/twd: Convert to hotplug state machine

2016-07-15 10:40:28 +02:00

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

ARM: 8475/1: SWP emulation: Restore original *data when failed

2015-12-15 11:51:42 +00:00

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: 8497/1: initialize cpu_scale to its default

2016-01-26 23:49:02 +00:00

traps.c

ARM: 8720/1: ensure dump_instr() checks addr_limit

2017-11-15 15:53:18 +01:00

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