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71ca758889
linux/arch/mips
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Jim Quinlan 71ca758889 MIPS: Make local_irq_disable macro safe for non-Mipsr2 
For non-mipsr2 processors, the local_irq_disable contains an mfc0-mtc0
pair with instructions inbetween.  With preemption enabled, this sequence
may get preempted and effect a stale value of CP0_STATUS when executing
the mtc0 instruction.  This commit avoids this scenario by incrementing
the preempt count before the mfc0 and decrementing it after the mtc9.

[ralf@linux-mips.org: This patch is sorting out the part that were missed
by e97c5b6098 [MIPS: Make irqflags.h functions preempt-safe for non-mipsr2
cpus.]  I also re-enabled the inclusion of <asm/asm-offsets.h> at the top
of <asm/asmmacro.h>].

Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/6164/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-03-20 13:46:15 +01:00
..
alchemy MIPS: Alchemy: Fix unchecked kstrtoul return value 2014-03-06 20:52:28 +01:00
ar7 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-01-30 17:20:32 -08:00
ath79 mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
bcm47xx MIPS: BCM47XX: Check all (32) GPIOs when looking for a pin 2014-03-19 09:28:10 +01:00
bcm63xx mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
boot mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
cavium-octeon MIPS: Octeon: Fix warning in of_device_alloc on cn3xxx 2014-03-19 23:50:30 +01:00
cobalt MIPS: Cobalt: Move to 8250/16550 serial early printk driver 2013-10-29 21:24:38 +01:00
configs MIPS: Kill CONFIG_MTD_PARTITIONS 2014-01-24 22:39:45 +01:00
dec DEC: Whitespace cleanup 2013-10-29 21:24:44 +01:00
emma MIPS: Remove panic_timeout settings 2013-11-26 12:12:27 +01:00
fw mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
include MIPS: Make local_irq_disable macro safe for non-Mipsr2 2014-03-20 13:46:15 +01:00
jazz Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-03-02 07:44:16 -08:00
jz4740 mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
kernel MIPS: ftrace: Fix icache flush range error 2014-03-17 15:42:07 +01:00
kvm mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
lantiq mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
lasat mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
lib mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
loongson mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
loongson1 MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
math-emu MIPS: math-emu: Fix prefx detection and COP1X function field definition 2014-03-11 23:10:55 +01:00
mm Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-01-30 17:20:32 -08:00
mti-malta MIPS: APRP: Choose the correct VPE loader by fixing the linking 2014-03-06 21:20:23 +01:00
mti-sead3 mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
netlogic Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-01-30 17:20:32 -08:00
oprofile MIPS: Add support for interAptiv cores 2014-01-22 20:19:01 +01:00
pci MIPS: Octeon: Fix fall through on bar type OCTEON_DMA_BAR_TYPE_SMALL 2014-03-15 00:46:23 +01:00
pmcs-msp71xx MIPS: introduce MIPS_L1_CACHE_SHIFT_<N> 2014-01-24 22:39:55 +01:00
pnx833x MIPS: PNX833x: PNX8335_PCI_ETHERNET_INT depends on CONFIG_SOC_PNX8335 2013-08-05 13:34:22 +02:00
power MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
ralink Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-01-30 17:20:32 -08:00
rb532 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sgi-ip22 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sgi-ip27 mips: delete non-required instances of include <linux/init.h> 2014-01-24 22:39:56 +01:00
sgi-ip32 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sibyte MIPS: Remove panic_timeout settings 2013-11-26 12:12:27 +01:00
sni MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
txx9 MIPS: TXx9: Fix build error if CONFIG_TOSHIBA_JMR3927 is not selected 2013-09-03 15:30:50 +02:00
vr41xx MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
Kbuild KVM/MIPS32: Infrastructure/build files. 2013-05-08 03:55:34 +02:00
Kbuild.platforms MIPS: PowerTV: Remove support code. 2013-10-29 21:25:17 +01:00
Kconfig MIPS: Fix possible build error with transparent hugepages enabled 2014-03-18 08:18:11 +01:00
Kconfig.debug MIPS: Add 8250/16550 serial early printk driver 2013-10-29 21:24:36 +01:00
Makefile Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-01-30 17:20:32 -08:00