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linux-next/arch/mips
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Maciej W. Rozycki e2e7f29af8 MIPS: c-r4k.c: Fix the 74K D-cache alias erratum workaround 
Fix the 74K D-cache alias erratum workaround so that it actually works.
Our current code sets MIPS_CACHE_VTAG for the D-cache, but that flag
only has any effect for the I-cache.  Additionally MIPS_CACHE_PINDEX is
set for the D-cache if CP0.Config7.AR is also set for an affected
processor, leading to confusing information in the bootstrap log (the
flag isn't used beyond that).

So delete the setting of MIPS_CACHE_VTAG and rely on MIPS_CACHE_ALIASES,
set in a common place, removing I-cache coherency issues seen in GDB
testing with software breakpoints, gdbserver and ptrace(2), on affected
systems.

While at it add a little piece of explanation of what CP0.Config6.SYND
is so that people do not have to chase documentation.

Signed-off-by: Maciej W. Rozycki <macro@codesourcery.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8507/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-04-02 13:54:18 +02:00
..
alchemy Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2015-02-21 19:41:38 -08:00
ar7 mips: Convert pr_warning to pr_warn 2014-11-24 07:44:51 +01:00
ath25 MIPS: ath25: add Wireless device support 2014-11-24 07:45:29 +01:00
ath79 MIPS: ath79: Increase max memory limit to 256MByte 2015-04-01 17:21:57 +02:00
bcm47xx MIPS: BCM47XX: Fix coding style to match kernel standards 2015-04-01 17:22:10 +02:00
bcm63xx MIPS: Remove useless parentheses 2014-11-24 07:44:49 +01:00
bmips MIPS: BMIPS: restrict DTB selection to BMIPS_GENERIC 2015-04-01 17:22:04 +02:00
boot MIPS: OCTEON: add GPIO LED support for DSR-1000N 2015-04-01 17:22:10 +02:00
cavium-octeon MIPS: Octeon: Make octeon-md5 driver endian-agnostic 2015-04-01 17:22:15 +02:00
cobalt MIPS: Cobalt: Move to 8250/16550 serial early printk driver 2013-10-29 21:24:38 +01:00
configs MIPS: XPA: Add new configuration file. 2015-04-01 17:21:45 +02:00
dec Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-06-09 18:10:34 -07:00
emma MIPS: Remove panic_timeout settings 2013-11-26 12:12:27 +01:00
fw MIPS: ARC: Use __noreturn / unreachable in ARC termination functions. 2015-01-13 16:04:27 +01:00
include MIPS: Remove prototype for copy_user_page 2015-04-02 13:54:18 +02:00
jazz
jz4740 MIPS: jz4740: Implement read_sched_clock 2015-04-01 17:21:31 +02:00
kernel MIPS: perf: Add hardware perf events support for Loongson-3 2015-04-01 17:22:17 +02:00
kvm KVM: MIPS: Enable after disabling interrupt 2015-03-02 19:18:12 -03:00
lantiq MIPS: mark prom_free_prom_memory() everywhere with __init 2015-04-01 17:21:58 +02:00
lasat MIPS: Lasat: Add missing CONFIG_PROC_FS dependency to PICVUE_PROC 2014-10-21 17:35:44 +02:00
lib MIPS: csum_partial: Improve instruction parallelism. 2015-04-01 17:22:11 +02:00
loongson MIPS: Loongson-3: Add chipset ACPI platform driver 2015-04-01 17:22:18 +02:00
loongson1 MIPS: Loongson1B: Add a clockevent/clocksource using PWM Timer 2014-11-24 07:45:09 +01:00
math-emu MIPS: Add FPU emulator counter for emulated delay slots. 2015-04-01 17:21:57 +02:00
mm MIPS: c-r4k.c: Fix the 74K D-cache alias erratum workaround 2015-04-02 13:54:18 +02:00
mti-malta MIPS: Malta: malta-time: Ensure GIC counter is running 2015-03-31 12:04:13 +02:00
mti-sead3 MIPS: SEAD3: Nuke remaining I2C bits. 2015-04-01 17:22:08 +02:00
net module: remove mod arg from module_free, rename module_memfree(). 2015-01-20 11:38:33 +10:30
netlogic MIPS: Netlogic: Add built-in dts for XLP5xx boards 2015-04-01 17:21:54 +02:00
oprofile MIPS: Add R16000 detection 2015-04-01 17:22:13 +02:00
paravirt mips: Update the email address of Geert Uytterhoeven 2014-06-02 16:34:41 +02:00
pci MIPS: PCI: Add a hook for IORESOURCE_BUS in pci_controller/bridge_controller 2015-04-01 17:22:16 +02:00
pistachio MIPS: Add support for the IMG Pistachio SoC 2015-03-31 12:04:12 +02:00
pmcs-msp71xx kconfig: use bool instead of boolean for type definition attributes 2015-01-07 13:08:04 +01:00
pnx833x MIPS: PNX833x: Remove checks for CONFIG_I2C_PNX0105 2014-05-23 15:12:39 +02:00
power MIPS: Hibernate: Restructure files and functions 2015-04-01 17:22:09 +02:00
ralink Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
rb532 MIPS: Replace use of phys_t with phys_addr_t. 2014-11-24 22:47:31 +01:00
sgi-ip22 MIPS: ip22-gio: Remove legacy suspend/resume support 2015-02-20 13:30:55 +01:00
sgi-ip27 MIPS: sgi-ip27: Implement read_sched_clock 2015-04-01 17:21:29 +02:00
sgi-ip32 MIPS: IP32: ip32-platform is not a module. 2015-04-01 17:22:13 +02:00
sibyte MIPS: Replace use of phys_t with phys_addr_t. 2014-11-24 22:47:31 +01:00
sni MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
txx9 Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
vr41xx MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
Kbuild MIPS: net: Add BPF JIT 2014-05-30 16:10:20 +02:00
Kbuild.platforms MIPS: bcm3384: Rename "bcm3384" target to "bmips" 2015-04-01 17:21:35 +02:00
Kconfig MIPS: perf: Add hardware perf events support for Loongson-3 2015-04-01 17:22:17 +02:00
Kconfig.debug MIPS: kernel: elf: Improve the overall ABI and FPU mode checks 2015-02-17 15:37:39 +00:00
Makefile MIPS: Add dtbs_install target 2015-04-01 17:21:34 +02:00