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linux/arch/mips
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James Cowgill 92f0ddece7 MIPS: Avoid BUG warning in arch_check_elf 
commit c46f59e902 upstream.

arch_check_elf contains a usage of current_cpu_data that will call
smp_processor_id() with preemption enabled and therefore triggers a
"BUG: using smp_processor_id() in preemptible" warning when an fpxx
executable is loaded.

As a follow-up to commit b244614a60 ("MIPS: Avoid a BUG warning during
prctl(PR_SET_FP_MODE, ...)"), apply the same fix to arch_check_elf by
using raw_current_cpu_data instead. The rationale quoted from the previous
commit:

"It is assumed throughout the kernel that if any CPU has an FPU, then
all CPUs would have an FPU as well, so it is safe to perform the check
with preemption enabled - change the code to use raw_ variant of the
check to avoid the warning."

Fixes: 46490b5725 ("MIPS: kernel: elf: Improve the overall ABI and FPU mode checks")
Signed-off-by: James Cowgill <James.Cowgill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15951/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-05-03 08:36:38 -07:00
..
alchemy MIPS: Sanitise coherentio semantics 2016-10-06 18:01:28 +02:00
ar7 MIPS: ar7: use gpiochip data pointer 2016-02-19 09:51:43 +01:00
ath25 genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
ath79 MIPS: ath79: Fix test for error return of clk_register_fixed_factor(). 2016-09-13 14:13:26 +02:00
bcm47xx MIPS: BCM47XX: Fix button inversion for Asus WL-500W 2017-03-12 06:41:39 +01:00
bcm63xx MIPS: BCM63xx: Let clk_disable() return immediately if clk is NULL 2016-10-04 16:13:57 +02:00
bmips MIPS: BMIPS: Support APPENDED_DTB 2016-10-06 17:31:02 +02:00
boot MIPS: Malta: Fixup reboot 2016-11-04 00:27:27 +01:00
cavium-octeon MIPS: OCTEON: Fix copy_from_user fault handling for large buffers 2017-03-12 06:41:39 +01:00
cobalt MIPS: Cobalt: Fix typo 2016-08-03 08:16:30 +02:00
configs MIPS: Update lemote2f_defconfig for CPU_FREQ_STAT change 2017-03-18 19:14:27 +08:00
dec MIPS: DEC: Avoid la pseudo-instruction in delay slots 2016-09-29 18:59:49 +02:00
emma MIPS: Remove panic_timeout settings 2013-11-26 12:12:27 +01:00
fw MIPS: Fix misspellings in comments. 2016-04-03 12:32:09 +02:00
generic MIPS: generic: Fix KASLR for generic kernel. 2016-11-04 00:32:06 +01:00
include MIPS: Only change $28 to thread_info if coming from user mode 2017-04-18 07:11:48 +02:00
jazz MIPS: Jazz: Migrate to new 'set-state' interface 2015-09-03 12:07:50 +02:00
jz4740 tree-wide: replace config_enabled() with IS_ENABLED() 2016-08-04 08:50:07 -04:00
kernel MIPS: Avoid BUG warning in arch_check_elf 2017-05-03 08:36:38 -07:00
kvm KVM: MIPS: Flush KVM entry code from icache globally 2017-01-12 11:39:09 +01:00
lantiq Revert "MIPS: Lantiq: Fix cascaded IRQ setup" 2017-04-21 09:31:22 +02:00
lasat mips: separate extable.h, switch module.h to it 2016-10-05 18:36:18 -04:00
lib MIPS: dump_tlb: Fix printk continuations 2016-11-04 01:04:32 +01:00
loongson32 MIPS: Add RTC support for Loongson1C board 2016-10-04 16:13:57 +02:00
loongson64 mips/loongson/smp: Convert to hotplug state machine 2016-09-19 21:44:32 +02:00
math-emu treewide: remove redundant #include <linux/kconfig.h> 2016-10-11 15:06:33 -07:00
mm MIPS: c-r4k: Fix Loongson-3's vcache/scache waysize calculation 2017-04-12 12:41:15 +02:00
mti-malta MIPS: Print CM error reports upon bus errors 2016-10-06 18:02:18 +02:00
net treewide: remove redundant #include <linux/kconfig.h> 2016-10-11 15:06:33 -07:00
netlogic dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
oprofile MIPS/Loongson-3: Convert oprofile to hotplug state machine 2016-07-15 10:40:29 +02:00
paravirt MIPS: SMP: Don't increment irq_count multiple times for call function IPIs 2015-08-03 09:25:12 +02:00
pci MIPS: Sanitise coherentio semantics 2016-10-06 18:01:28 +02:00
pic32 MIPS: pic32mzda: Fix linker error for pic32_get_pbclk() 2017-03-12 06:41:39 +01:00
pistachio Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
pmcs-msp71xx MIPS: MSP71xx: Use __flush_cache_all instead of flush_cache_all. 2016-05-13 14:01:38 +02:00
pnx833x MIPS: Squash lines for simple wrapper functions 2016-10-04 16:13:57 +02:00
power MIPS: Hibernate: flush TLB entries earlier 2015-04-10 15:41:52 +02:00
ralink MIPS: ralink: Fix typos in rt3883 pinctrl 2017-04-12 12:41:14 +02:00
rb532 MIPS: rb532: use gpiochip data pointer 2016-02-19 09:51:44 +01:00
sgi-ip22 MIPS: ip22: Fix ip28 build for modern gcc 2017-03-18 19:14:27 +08:00
sgi-ip27 MIPS: Spelling fix lets -> let's 2016-05-28 12:35:09 +02:00
sgi-ip32 MIPS: IP32: Fix build errors in reset code in DS1685 platform hook. 2015-05-13 00:01:41 +02:00
sibyte MIPS: Sibyte: Fix Kconfig dependencies of SIBYTE_BUS_WATCHER 2016-05-09 12:00:03 +02:00
sni char/genrtc: remove asm-generic/rtc.h from mips 2016-06-04 00:23:36 +02:00
txx9 MIPS: PCI: Reduce stack frame usage 2016-10-04 16:13:57 +02:00
vdso MIPS: VDSO: Drop duplicated -I*/-E* aflags 2016-10-11 15:07:30 +02:00
vr41xx MIPS: VR41xx: Fix typo 2016-05-28 12:35:09 +02:00
xilfpga mips: Remove unnecessary of_platform_populate with default match table 2016-06-23 15:00:29 -05:00
Kbuild MIPS: Initial implementation of a VDSO 2015-11-11 08:36:36 +01:00
Kbuild.platforms MIPS: generic: Convert SEAD-3 to a generic board 2016-10-06 18:04:20 +02:00
Kconfig MIPS: Select HAVE_IRQ_EXIT_ON_IRQ_STACK 2017-04-18 07:11:48 +02:00
Kconfig.debug MIPS: Remove compact branch policy Kconfig entries 2016-09-13 14:14:50 +02:00
Makefile MIPS: Fix build of compressed image 2016-11-04 00:37:15 +01:00