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linux/arch/arm/kernel
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Russell King 14f13c9d58 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 09:53:05 +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: implement memset32 & memset64
2017-09-08 18:26:48 -07:00
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: fix rd_size declaration
2017-07-10 16:32:34 -07:00
atags_proc.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
atags.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
bios32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cpuidle.c
ARM: Convert to using %pOF instead of full_name
2017-08-16 22:25:30 +02:00
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: 8704/1: semihosting: use proper instruction on v7m processors
2017-10-12 11:28:29 +01:00
devtree.c
ARM: Convert to using %pOF instead of full_name
2017-08-16 22:25:30 +02:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
entry-armv.S
Merge branches 'fixes' and 'misc' into for-linus
2017-09-09 16:34:41 +01:00
entry-common.S
arm/syscalls: Optimize address limit check
2017-09-17 19:45:33 +02:00
entry-ftrace.S
ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS
2017-06-18 22:25:16 +01:00
entry-header.S
ARM: avoid faulting on qemu
2017-12-14 09:53:05 +01:00
entry-v7m.S
ARM: rename S_FRAME_SIZE to PT_REGS_SIZE
2016-06-22 19:54:28 +01:00
fiq.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fiqasm.S
ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+
2014-07-18 12:29:04 +01:00
ftrace.c
ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS
2017-06-18 22:25:16 +01:00
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: 8649/2: nommu: remove Hivecs configuration is asm
2017-02-28 11:06:15 +00:00
head.S
ARM: align .data section
2017-08-14 16:22:55 +01:00
hibernate.c
ARM: use virt_to_idmap() for soft_restart()
2016-02-08 15:48:32 +00:00
hw_breakpoint.c
ARM/hw_breakpoint: Fix possible recursive locking for arch_hw_breakpoint_init
2017-06-20 12:25:22 +02:00
hyp-stub.S
ARM: align .data section
2017-08-14 16:22:55 +01:00
insn.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
io.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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: align .data section
2017-08-14 16:22:55 +01:00
jump_label.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
kgdb.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
machine_kexec.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
module-plts.c
ARM: 8662/1: module: split core and init PLT sections
2017-03-17 10:01:28 +00:00
module.c
ARM: Silence first allocation with CONFIG_ARM_MODULE_PLTS=y
2017-05-11 14:43:31 +01:00
module.lds
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
opcodes.c
ARM: 7206/1: Add generic ARM instruction set condition code checks.
2011-12-13 08:52:02 +00:00
paravirt.c
arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops
2015-12-21 14:40:54 +00:00
patch.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
perf_callchain.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
perf_event_v6.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
perf_event_v7.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
perf_event_xscale.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
perf_regs.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +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: 8683/1: ARM32: Support mremap() for sigpage/vDSO
2017-06-21 13:02:58 +01:00
psci_smp.c
ARM: use const and __initconst for smp_operations
2015-12-01 22:17:45 +01:00
ptrace.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>
2017-03-02 08:42:36 +01:00
reboot.c
ARM: soft-reboot into same mode that we entered the kernel
2017-04-09 07:49:24 -07:00
reboot.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
relocate_kernel.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
return_address.c
ARM: 8328/1: remove empty preprocessor #else branch
2015-03-28 16:54:53 +00:00
setup.c
ARM: kexec: avoid allocating crashkernel region outside lowmem
2017-07-20 11:37:15 +01:00
signal.c
arm/syscalls: Optimize address limit check
2017-09-17 19:45:33 +02:00
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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
smccc-call.S
arm: kernel: Add SMC structure parameter
2017-02-03 18:46:33 +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
clocksource/drivers: Rename CLOCKSOURCE_OF_DECLARE to TIMER_OF_DECLARE
2017-06-14 11:58:45 +02:00
smp.c
arm: Adjust system_state check
2017-05-23 10:01:35 +02:00
stacktrace.c
ARM: 8691/1: Export save_stack_trace_tsk()
2017-09-09 16:26:42 +01:00
suspend.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swp_emulate.c
sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>
2017-03-02 08:42:37 +01:00
sys_arm.c
arm: switch to generic fork/vfork/clone
2012-11-28 22:13:54 -05:00
sys_oabi-compat.c
sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>
2017-03-02 08:42:31 +01:00
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/drivers: Rename clocksource_probe to timer_probe
2017-06-14 11:59:16 +02:00
topology.c
ARM: Convert to using %pOF instead of full_name
2017-08-16 22:25:30 +02:00
traps.c
ARM: 8720/1: ensure dump_instr() checks addr_limit
2017-11-06 12:00:38 +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
ARM: 8683/1: ARM32: Support mremap() for sigpage/vDSO
2017-06-21 13:02:58 +01:00
vmlinux-xip.lds.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
vmlinux.lds.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xscale-cp0.c
ARM: make xscale iwmmxt code multiplatform aware
2015-12-01 21:44:24 +01:00