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3b4b82399c
linux/arch/mips
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Paul Burton 3b4b82399c MIPS: Cleanup LLBit handling in switch_to 
Commit 7c151d3d5d ("MIPS: Make use of the ERETNC instruction on MIPS
R6") began clearing LLBit during context switches, but did so on all
systems where it is writable for unclear reasons & did so from a macro
with "software_ll_bit" in its name, which is intended to operate on the
ll_bit variable used by ll/sc emulation for old CPUs.

We do now need to clear LLBit on MIPSr6 systems where we'll use eretnc
to return to userland, but we don't need to do so on MIPSr5 systems with
a writable LLBit.

Move the clear to its own appropriately named macro, do it only for
MIPSr6 systems & comment about why.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14409/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-01-03 16:34:42 +01:00
..
alchemy clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
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 error handling 2017-01-03 16:34:39 +01:00
bcm47xx MIPS: BCM47xx: Make serial explicitly non-modular 2016-10-04 16:13:57 +02:00
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: DTS: img: add device tree for Marduk board 2017-01-03 16:34:41 +01:00
cavium-octeon MIPS: SMP: Remove cpu_callin_map 2017-01-03 16:34:38 +01:00
cobalt MIPS: Cobalt: Fix typo 2016-08-03 08:16:30 +02:00
configs MIPS: xilfpga: Update defconfig 2017-01-03 16:34:40 +01:00
dec Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
emma
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: Cleanup LLBit handling in switch_to 2017-01-03 16:34:42 +01:00
jazz Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
jz4740 clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
kernel MIPS: Remove r2_emul_return from struct thread_info 2017-01-03 16:34:41 +01:00
kvm KVM: MIPS: Precalculate MMIO load resume PC 2016-10-26 13:43:55 +02:00
lantiq MIPS: Lantiq: Fix mask of GPE frequency 2016-12-11 11:20:25 +01:00
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 clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
loongson64 MIPS: SMP: Remove cpu_callin_map 2017-01-03 16:34:38 +01:00
math-emu Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mm MIPS: IP22: Fix build error due to binutils 2.25 uselessnes. 2017-01-03 16:34:33 +01:00
mti-malta clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
net treewide: remove redundant #include <linux/kconfig.h> 2016-10-11 15:06:33 -07:00
netlogic MIPS: Netlogic: Exclude netlogic,xlp-pic code from XLR builds 2017-01-03 16:34:38 +01:00
oprofile Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-12-25 14:05:56 -08:00
paravirt
pci MIPS: TXx9: Modernize printing of kernel messages 2017-01-03 16:34:32 +01:00
pic32 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
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
ralink MIPS: ralink: Make timer explicitly non-modular 2016-10-04 16:13:57 +02:00
rb532 MIPS: rb532: use gpiochip data pointer 2016-02-19 09:51:44 +01:00
sgi-ip22 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
sgi-ip27 clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
sgi-ip32 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
sibyte Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
sni char/genrtc: remove asm-generic/rtc.h from mips 2016-06-04 00:23:36 +02:00
txx9 MIPS: TXx9: Modernize printing of kernel messages 2017-01-03 16:34:32 +01:00
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: xilfpga: Use irqchip instead of the legacy way 2017-01-03 16:34:39 +01:00
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: Loongson1C: Remove ARCH_WANT_OPTIONAL_GPIOLIB 2017-01-03 16:34:40 +01:00
Kconfig.debug MIPS: Remove compact branch policy Kconfig entries 2016-09-13 14:14:50 +02:00
Makefile MIPS: Use Makefile.postlink to insert relocations into vmlinux 2017-01-03 16:34:37 +01:00
Makefile.postlink MIPS: Use Makefile.postlink to insert relocations into vmlinux 2017-01-03 16:34:37 +01:00