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linux/arch/arm/kernel
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Russell King dd8c78e250 ARM: avoid faulting on qemu 
commit 3aaf33bebda8d4ffcc0fc8ef39e6c1ac68823b11 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: 8bafae202c82 ("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>
2017-12-16 10:33:50 +01:00
..
.gitignore
…
arch_timer.c
arch_timer: Move to generic sched_clock framework
2013-10-09 16:54:10 -07:00
armksyms.c
Merge branch 'uaccess' into fixes
2015-09-11 19:18:28 +01:00
asm-offsets.c
Merge branch 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc
2015-04-15 13:53:55 -07:00
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: constify machine_desc structure uses
2013-07-26 14:55:59 +01:00
bios32.c
ARM/PCI: Move align_resource function pointer to pci_host_bridge structure
2015-11-25 13:23:38 -06:00
calls.S
ARM: wire up mlock2 syscall
2015-11-18 11:20:24 +00:00
cpuidle.c
ARM: cpuidle: Document the code
2015-03-25 09:53:43 +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
2016-10-07 15:23:40 +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
elf.c
…
entry-armv.S
ARM: remove user cmpxchg syscall
2015-10-03 16:36:45 +01:00
entry-common.S
Merge branch 'uaccess' into fixes
2015-09-11 19:18:28 +01:00
entry-ftrace.S
ARM: replace BSYM() with badr assembly macro
2015-05-08 17:33:50 +01:00
entry-header.S
ARM: avoid faulting on qemu
2017-12-16 10:33:50 +01:00
entry-v7m.S
ARM: 8340/1: ARMv7-M: Enlarge vector table up to 256 entries
2015-05-08 10:42:21 +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
ARM: kprobes: enable OPTPROBES for ARM 32
2015-01-13 16:10:17 +00:00
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: 8383/1: nommu: avoid deprecated source register on mov
2015-06-12 21:18:48 +01:00
head.S
Merge branch 'uaccess' into fixes
2015-09-11 19:18:28 +01:00
hibernate.c
ARM: move reboot code to arch/arm/kernel/reboot.c
2015-04-02 09:50:45 +01:00
hw_breakpoint.c
ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs
2017-01-26 08:23:49 +01:00
hyp-stub.S
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2014-08-07 11:35:30 -07:00
insn.c
…
io.c
ARM: io.c: clean up EXPORT_SYMBOL()s
2014-11-21 15:25:02 +00:00
irq.c
ARM: uniphier: add outer cache support
2015-10-27 09:20:50 +09:00
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: 8338/1: kexec: Relax SMP validation to improve DT compatibility
2015-04-02 09:59:43 +01:00
Makefile
ARM: 8452/3: PJ4: make coprocessor access sequences buildable in Thumb2 mode
2017-05-14 13:32:54 +02:00
module-plts.c
ARM: 8364/1: fix BE32 module loading
2015-06-02 09:58:17 +01:00
module.c
ARM: 8220/1: allow modules outside of bl range
2015-05-08 10:42:34 +01:00
module.lds
ARM: 8220/1: allow modules outside of bl range
2015-05-08 10:42:34 +01:00
opcodes.c
…
patch.c
ARM: probes: move all probe code to dedicate directory
2015-01-09 09:36:50 +00:00
perf_callchain.c
arm: perf: factor out callchain code
2014-10-30 12:16:58 +00:00
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: factor arm_pmu core out to drivers
2015-07-31 15:01:14 +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
2017-05-14 13:32:54 +02:00
process.c
ARM: report proper DACR value in oops dumps
2015-12-04 19:20:48 +00:00
psci_smp.c
ARM: Remove __ref on hotplug cpu die path
2015-10-22 09:55:03 -07:00
psci-call.S
ARM: 8307/1: psci: move psci firmware calls out of line
2015-03-29 23:11:17 +01:00
ptrace.c
ARM: 8643/3: arm/ptrace: Preserve previous registers for short regset write
2017-02-14 15:22:51 -08:00
reboot.c
ARM: 8400/1: use virt_to_idmap to get phys_reset address
2015-07-17 15:08:17 +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
Merge branch 'devel-stable' into for-linus
2015-09-03 15:28:50 +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
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 08:23:49 +01:00
smp_twd.c
ARM: clean up TWD after previous patch
2015-10-09 16:22:53 +01:00
smp.c
ARM: 8439/1: Fix backtrace generation when IPI is masked
2015-10-03 16:40:51 +01:00
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
…
sys_oabi-compat.c
arm: oabi compat: add missing access checks
2016-08-16 09:30:48 +02:00
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: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00
traps.c
ARM: 8720/1: ensure dump_instr() checks addr_limit
2017-11-15 17:13:12 +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
ARM: 8410/1: VDSO: fix coarse clock monotonicity regression
2015-08-11 13:42:44 +01:00
vmlinux.lds.S
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2015-04-16 13:58:29 -05:00
xscale-cp0.c
ARM: convert printk(KERN_* to pr_*
2014-11-21 15:24:50 +00:00