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linux/arch/mips/include/asm
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Paul Burton 1031398035 MIPS: Mask out limit field when calculating wired entry count 
Since MIPSr6 the Wired register is split into 2 fields, with the upper
16 bits of the register indicating a limit on the value that the wired
entry count in the bottom 16 bits of the register can take. This means
that simply reading the wired register doesn't get us a valid TLB entry
index any longer, and we instead need to retrieve only the lower 16 bits
of the register. Introduce a new num_wired_entries() function which does
this on MIPSr6 or higher and simply returns the value of the wired
register on older architecture revisions, and make use of it when
reading the number of wired entries.

Since commit e710d66683 ("MIPS: tlb-r4k: If there are wired entries,
don't use TLBINVF") we have been using a non-zero number of wired
entries to determine whether we should avoid use of the tlbinvf
instruction (which would invalidate wired entries) and instead loop over
TLB entries in local_flush_tlb_all(). This loop begins with the number
of wired entries, or before this patch some large bogus TLB index on
MIPSr6 systems. Thus since the aforementioned commit some MIPSr6 systems
with FTLBs have been prone to leaving stale address translations in the
FTLB & crashing in various weird & wonderful ways when we later observe
the wrong memory.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14557/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-11-24 16:44:16 +01:00
..
dec DEC: Document the R4k MB ASIC mini interrupt controller 2014-06-04 22:50:41 +02:00
emma
fw MIPS: Malta: Remove fw_memblock_t abstraction 2015-11-11 08:35:45 +01:00
ip32
lasat
mach-ar7 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-ath25 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-ath79 irqchip/ath79-cpu: Move the CPU IRQ driver from arch/mips/ath79/ 2016-02-17 13:47:19 +00:00
mach-au1x00 MIPS: Spelling fix lets -> let's 2016-05-28 12:35:09 +02:00
mach-bcm47xx MIPS: BCM47xx: Fetch board info directly in callback function 2015-11-11 08:36:57 +01:00
mach-bcm63xx MIPS: BCM63xx: Fix typo 2016-05-28 12:35:06 +02:00
mach-bmips MIPS: BMIPS: Add BCM6358 support 2016-05-13 14:02:09 +02:00
mach-cavium-octeon MIPS: Octeon: mangle-port: fix build failure with VDSO code 2016-09-19 17:21:37 +02:00
mach-cobalt MIPS: Correct `nofpu' non-functionality 2015-04-08 01:09:49 +02:00
mach-db1x00 MIPS: Alchemy: fold mach-db1xxx/db1x00 headers into board code 2014-03-26 23:09:21 +01:00
mach-dec MIPS: DEC: Update CPU overrides 2015-06-21 21:52:44 +02:00
mach-emma2rh MIPS: Create a common <asm/mach-generic/war.h> 2015-03-31 11:59:40 +02:00
mach-generic MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0 2016-10-06 18:02:35 +02:00
mach-ip22 MIPS: Correct `nofpu' non-functionality 2015-04-08 01:09:49 +02:00
mach-ip27 MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0 2016-10-06 18:02:35 +02:00
mach-ip28 MIPS: IP28: Fix/clean spaces.h 2014-08-26 02:18:58 +02:00
mach-ip32 MIPS: IP32: Fix typo 2016-05-28 12:35:07 +02:00
mach-jazz MIPS: DMA: Implement platform hook to perform post-DMA cache flushes. 2015-04-01 17:22:01 +02:00
mach-jz4740 MTD updates for v4.7: 2016-05-24 11:00:20 -07:00
mach-lantiq MIPS: Spelling fix lets -> let's 2016-05-28 12:35:09 +02:00
mach-lasat MIPS: Create a common <asm/mach-generic/war.h> 2015-03-31 11:59:40 +02:00
mach-loongson32 MIPS: Add RTC support for Loongson1C board 2016-10-04 16:13:57 +02:00
mach-loongson64 treewide: remove redundant #include <linux/kconfig.h> 2016-10-11 15:06:33 -07:00
mach-malta MIPS: Add definitions of SegCtl registers and use them 2016-05-28 12:35:04 +02:00
mach-netlogic MIPS: Netlogic: Move cores per node out of multi-node.h 2015-04-01 17:21:50 +02:00
mach-paravirt MIPS: paravirt: Fix undefined reference to smp_bootstrap 2016-09-13 16:45:15 +02:00
mach-pic32 MIPS: Add support for PIC32MZDA platform 2016-01-24 02:53:28 +01:00
mach-pistachio MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-pmcs-msp71xx MIPS: asm: Rename GCC_OFF12_ASM to GCC_OFF_SMALL_ASM 2015-02-17 15:37:21 +00:00
mach-pnx833x MIPS: Create a common <asm/mach-generic/war.h> 2015-03-31 11:59:40 +02:00
mach-ralink mips: mt7620: fallback to SDRAM when syscfg0 does not have a valid value for the memory type 2016-05-13 15:39:43 +02:00
mach-rc32434 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-rm MIPS: Correct `nofpu' non-functionality 2015-04-08 01:09:49 +02:00
mach-sibyte MIPS: SB1: Remove support for Pass 1 parts. 2015-07-14 21:47:34 +02:00
mach-tx39xx MIPS: Create a common <asm/mach-generic/war.h> 2015-03-31 11:59:40 +02:00
mach-tx49xx MIPS: Replace use of phys_t with phys_addr_t. 2014-11-24 22:47:31 +01:00
mach-vr41xx MIPS: Create a common <asm/mach-generic/war.h> 2015-03-31 11:59:40 +02:00
mach-xilfpga MIPS: xilfpga: Add mipsfpga platform code 2015-11-11 08:38:44 +01:00
mips-boards MIPS: SEAD3: Probe EHCI controller using DT 2016-10-05 01:31:20 +02:00
netlogic genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
octeon MIPS: Octeon: Delete unused cvmx-mdio.h 2016-10-04 16:13:57 +02:00
pci MIPS: Fix misspellings in comments. 2016-04-03 12:32:09 +02:00
sgi MIPS: IP22/IP28: Fix typo 2016-05-28 12:35:08 +02:00
sibyte MIPS: BCM1480: bcm1480_regs.h: strip redundant comments 2016-05-13 14:02:13 +02:00
sn MIPS: Fix misspellings in comments. 2016-04-03 12:32:09 +02:00
txx9
vr41xx
xtalk MIPS: Xtalk: Update xwidget.h with known Xtalk device numbers 2015-06-21 21:54:21 +02:00
abi.h MIPS: Initial implementation of a VDSO 2015-11-11 08:36:36 +01:00
addrspace.h MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0 2016-10-06 18:02:35 +02:00
amon.h MIPS: APRP: Code formatting clean-ups. 2014-01-22 20:19:02 +01:00
arch_hweight.h
asm-eva.h MIPS: asm: asm-eva: Introduce kernel load/store variants 2015-04-10 15:41:43 +02:00
asm-offsets.h
asm.h MIPS: Fix gigaton of warning building with microMIPS. 2014-03-31 18:17:12 +02:00
asmmacro-32.h Merge branch '4.1-fp' into mips-for-linux-next 2015-04-13 16:01:37 +02:00
asmmacro-64.h MIPS: Support for 64-bit FP with O32 binaries 2014-01-13 23:40:56 +01:00
asmmacro.h MIPS: Add a missing ".set pop" in an early commit 2016-09-13 17:25:11 +02:00
atomic.h locking/atomic, arch/mips: Convert to _relaxed atomics 2016-06-16 10:48:34 +02:00
barrier.h MIPS: Barrier: Add definitions of SYNC stype values 2016-10-04 16:13:57 +02:00
bcache.h MIPS: Introduce API for enabling & disabling L2 prefetch 2015-10-26 09:49:41 +01:00
bitops.h MIPS: Move definitions for 32/64-bit agonstic inline assembler to new file. 2016-05-09 12:00:05 +02:00
bitrev.h MIPS: Implement __arch_bitrev* using bitswap for MIPSr6 2016-05-13 14:02:17 +02:00
bmips-spaces.h MIPS: BMIPS: Define BMIPS_FIXADDR_TOP in asm/bmips-spaces.h 2015-06-21 21:53:30 +02:00
bmips.h MIPS: BMIPS: Add early CPU initialization code 2016-05-13 14:01:55 +02:00
bootinfo.h MIPS: store the appended dtb address in a variable 2016-08-02 14:00:16 +02:00
branch.h MIPS: kernel: mips-r2-to-r6-emul: Add R2 emulator for MIPS R6 2015-02-17 15:37:37 +00:00
break.h
bug.h
bugs.h
cache.h
cacheflush.h MIPS: c-r4k: Split user/kernel flush_icache_range() 2016-10-04 16:13:57 +02:00
cacheops.h MIPS: Loongson: Add Loongson-3A R2 basic support 2016-05-13 14:02:14 +02:00
cdmm.h MIPS: CDMM: Add builtin_mips_cdmm_driver() macro 2015-11-05 11:15:41 +01:00
cevt-r4k.h MIPS: cevt-r4k: Migrate to new 'set-state' interface 2015-09-03 12:07:52 +02:00
checksum.h ipv6: Pass proto to csum_ipv6_magic as __u8 instead of unsigned short 2016-03-13 23:55:13 -04:00
clock.h MIPS: Remove declaration of obsolete arch_init_clk_ops() 2014-11-24 07:45:37 +01:00
clocksource.h MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime() 2015-11-11 08:36:41 +01:00
cmp.h MIPS: SMP: Remove plat_smp_ops cpus_done method. 2014-05-27 11:06:42 +02:00
cmpxchg.h arch: Remove __ARCH_HAVE_CMPXCHG 2015-05-13 10:55:42 +02:00
compat-signal.h
compat.h MIPS: Clean up compat_siginfo_t 2015-11-12 11:35:47 +01:00
compiler.h MIPS: Use the new "ZC" constraint for MIPS R6 2015-02-17 15:37:21 +00:00
cop2.h MIPS: Prevent compiler warning from cop2_{save,restore} 2014-10-23 19:58:13 +02:00
cpu-features.h lib/GCD.c: use binary GCD algorithm instead of Euclidean 2016-05-20 17:58:30 -07:00
cpu-info.h MIPS: Add probing & defs for VZ & guest features 2016-05-13 15:30:25 +02:00
cpu-type.h MIPS: Add CPU support for Loongson1C 2016-10-04 16:13:57 +02:00
cpu.h MIPS: Add CPU support for Loongson1C 2016-10-04 16:13:57 +02:00
debug.h MIPS: Declare mips_debugfs_dir in a header 2015-10-26 09:49:42 +01:00
delay.h
device.h MIPS: Support per-device DMA coherence 2016-10-06 18:02:01 +02:00
div64.h
dma-coherence.h MIPS: Support per-device DMA coherence 2016-10-06 18:02:01 +02:00
dma-mapping.h MIPS: Support per-device DMA coherence 2016-10-06 18:02:01 +02:00
dma.h
ds1287.h
dsemul.h MIPS: Use per-mm page to execute branch delay slot instructions 2016-08-02 09:28:53 +02:00
dsp.h
edac.h EDAC: Cleanup atomic_scrub mess 2015-05-28 15:31:53 +02:00
elf.h MIPS: non-exec stack & heap when non-exec PT_GNU_STACK is present 2016-08-02 09:29:27 +02:00
errno.h
eva.h MIPS: EVA: Add new EVA header 2014-08-26 02:18:56 +02:00
exec.h
extable.h mips: separate extable.h, switch module.h to it 2016-10-05 18:36:18 -04:00
fb.h
fixmap.h MIPS: MT: Remove SMTC support 2014-05-24 00:07:01 +02:00
floppy.h
fpregdef.h MIPS: Fix build with binutils 2.24.51+ 2014-11-07 15:07:36 +01:00
fpu_emulator.h MIPS: Fix FCSR Cause bit handling for correct SIGFPE issue 2016-11-04 01:28:41 +01:00
fpu.h MIPS: Fix FPU disable with preemption 2016-02-01 23:36:38 +01:00
ftrace.h MIPS: ftrace: Fix a microMIPS build problem 2014-10-24 02:38:33 +02:00
futex.h MIPS: asm: futex: Set the appropriate ISA level for MIPS R6 2015-02-17 15:37:23 +00:00
gio_device.h MIPS: ip22-gio: Remove legacy suspend/resume support 2015-02-20 13:30:55 +01:00
gt64120.h
hardirq.h
hazards.h MIPS: hazards.h: Fix typo 2016-05-28 12:35:06 +02:00
highmem.h MIPS: highmem: Turn flush_cache_kmaps into a no-op. 2016-05-13 14:01:38 +02:00
hpet.h MIPS: Loongson-3: Add RS780/SBX00 HPET support 2014-11-24 07:45:02 +01:00
hugetlb.h mm/hugetlb: remove arch_prepare/release_hugepage from arch headers 2015-06-25 17:00:35 -07:00
hw_irq.h
i8259.h irqchip: i8259: Remove unused i8259A_irq_pending 2016-10-06 17:31:00 +02:00
ide.h
idle.h cpuidle: Invert CPUIDLE_FLAG_TIME_VALID logic 2014-11-12 21:17:27 +01:00
inst.h
io.h MIPS: Loongson-3: Introduce CONFIG_LOONGSON3_ENHANCEMENT 2016-05-13 14:02:15 +02:00
irq_cpu.h MIPS: Rename mips_cpu_intc_init() -> mips_cpu_irq_of_init() 2014-11-24 07:44:52 +01:00
irq_gt641xx.h
irq_regs.h MIPS: Select CONFIG_HANDLE_DOMAIN_IRQ and make it work. 2016-05-13 14:01:40 +02:00
irq.h nmi_backtrace: add more trigger_*_cpu_backtrace() methods 2016-10-07 18:46:30 -07:00
irqflags.h MIPS: Loongson-3: Introduce CONFIG_LOONGSON3_ENHANCEMENT 2016-05-13 14:02:15 +02:00
isadep.h
jazz.h
jazzdma.h
jump_label.h locking/static_keys: Add a new static_key interface 2015-08-03 11:34:15 +02:00
Kbuild MIPS: Use generic clkdev.h header 2016-05-13 14:01:58 +02:00
kdebug.h MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
kexec.h mips/panic: replace smp_send_stop() with kdump friendly version in panic path 2016-10-11 15:06:32 -07:00
kgdb.h MIPS: Get rid of 'kgdb_early_setup' cruft. 2015-06-21 21:54:10 +02:00
kmap_types.h
kprobes.h
kvm_host.h KVM: MIPS: Precalculate MMIO load resume PC 2016-10-26 13:43:55 +02:00
kvm_para.h MIPS: Add functions for hypervisor call 2014-05-30 21:01:11 +02:00
linkage.h MIPS: Remove "__weak" definition from arch-specific linkage.h 2015-09-03 12:07:39 +02:00
llsc.h MIPS: Move definitions for 32/64-bit agonstic inline assembler to new file. 2016-05-09 12:00:05 +02:00
local.h MIPS: asm: local: Set the appropriate ISA level for MIPS R6 2015-02-17 15:37:24 +00:00
m48t37.h
maar.h MIPS: Initialise MAARs on secondary CPUs 2015-09-27 14:15:26 +02:00
machine.h MIPS: generic: Introduce generic DT-based board support 2016-10-06 18:04:04 +02:00
mc146818-time.h
mc146818rtc.h
mips_machine.h
mips_mt.h MIPS: MT: Fix typo 2016-05-28 12:35:07 +02:00
mips-cm.h MIPS: pm-cps: Support CM3 changes to Coherence Enable Register 2016-10-04 16:13:57 +02:00
mips-cpc.h MIPS: CPC: Add start, stop and running CM3 CPC registers 2016-05-13 14:01:48 +02:00
mips-r2-to-r6-emul.h MIPS: traps: Correct the SIGTRAP debug ABI in do_watch' and do_trap_or_bp' 2016-04-03 12:32:09 +02:00
mipsmtregs.h MIPS: MT: define write_c0_tchalt macro 2014-05-28 16:20:22 +01:00
mipsprom.h
mipsregs.h MIPS: Mask out limit field when calculating wired entry count 2016-11-24 16:44:16 +01:00
mmu_context.h MIPS: Use per-mm page to execute branch delay slot instructions 2016-08-02 09:28:53 +02:00
mmu.h MIPS: Use per-mm page to execute branch delay slot instructions 2016-08-02 09:28:53 +02:00
mmzone.h
module.h mips: separate extable.h, switch module.h to it 2016-10-05 18:36:18 -04:00
msa.h MIPS: Fix MSA asm warnings in control reg accessors 2016-07-24 12:45:00 +02:00
msc01_ic.h
nile4.h mips: Update the email address of Geert Uytterhoeven 2014-06-02 16:34:41 +02:00
paccess.h MIPS: Apply `.insn' to fixup labels throughout 2014-11-24 07:45:36 +01:00
page.h treewide: replace config_enabled() with IS_ENABLED() (2nd round) 2016-08-26 17:39:35 -07:00
pci.h MIPS: PCI: Introduce CONFIG_PCI_DRIVERS_LEGACY 2016-10-06 18:00:05 +02:00
perf_event.h
pgalloc.h MIPS: Squash lines for simple wrapper functions 2016-10-04 16:13:57 +02:00
pgtable-32.h MIPS: mm: Fix MIPS32 36b physical addressing (alchemy, netlogic) 2016-05-13 15:30:25 +02:00
pgtable-64.h MIPS64: Support of at least 48 bits of SEGBITS 2016-05-13 14:02:16 +02:00
pgtable-bits.h MIPS: Allow RIXI to be used on non-R2 or R6 cores 2016-05-13 15:30:25 +02:00
pgtable.h mm: move phys_mem_access_prot_allowed() declaration to pgtable.h 2016-10-07 18:46:29 -07:00
pm-cps.h MIPS: pm-cps: Add MIPSr6 CPU support 2016-10-04 16:13:57 +02:00
pm.h Merge branch 'wip-mips-pm' of https://github.com/paulburton/linux into mips-for-linux-next 2014-05-29 15:08:23 +02:00
pmon.h
prefetch.h
processor.h MIPS: Use per-mm page to execute branch delay slot instructions 2016-08-02 09:28:53 +02:00
prom.h MIPS: prepare for user enabling of CONFIG_OF 2015-06-21 21:54:14 +02:00
ptrace.h MIPS: ptrace: Fix regs_return_value for kernel context 2016-10-12 14:34:45 +02:00
r4k-timer.h
r4kcache.h MIPS: c-r4k: Fix protected_writeback_scache_line for EVA 2016-07-29 10:19:29 +02:00
reboot.h
reg.h MIPS: asm/reg.h: Move to uapi 2014-08-02 00:06:38 +02:00
regdef.h
rtlx.h MIPS: APRP: Code formatting clean-ups. 2014-01-22 20:19:02 +01:00
seccomp.h tree-wide: replace config_enabled() with IS_ENABLED() 2016-08-04 08:50:07 -04:00
setup.h MIPS: KVM: Don't hardcode restored HWREna 2016-06-15 23:58:31 +02:00
sgialib.h MIPS: ARC: Add declarations for a few missing ARC firmware functions. 2015-01-13 16:04:28 +01:00
sgiarcs.h MIPS: Fix misspellings in comments. 2016-04-03 12:32:09 +02:00
shmparam.h
sigcontext.h Revert "MIPS: Save/restore MSA context around signals" 2014-06-26 10:48:18 +01:00
signal.h Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
sim.h
smp-cps.h MIPS: smp-cps: Pull boot config retrieval out of mips_cps_boot_vpes 2016-05-13 14:01:50 +02:00
smp-ops.h MIPS: Make smp CMP, CPS and MT use the new generic IPI functions 2016-02-25 10:56:58 +01:00
smp.h MIPS: smp.c: Introduce mechanism for freeing and allocating IPIs 2016-10-05 01:31:20 +02:00
sni.h
socket.h
sparsemem.h MIPS: Add NUMA support for Loongson-3 2014-07-30 21:46:19 +02:00
spinlock_types.h
spinlock.h locking/spinlock, arch: Update and fix spin_unlock_wait() implementations 2016-06-14 11:55:15 +02:00
spram.h MIPS: asm: spram: Add new symbol for MIPS scratch pad storage 2015-02-17 15:37:20 +00:00
stackframe.h MIPS: Fix FPU disable with preemption 2016-02-01 23:36:38 +01:00
stackprotector.h MIPS: initial stack protector support 2013-07-01 15:10:48 +02:00
stacktrace.h
string.h
switch_to.h MIPS: Fix FCSR Cause bit handling for correct SIGFPE issue 2016-11-04 01:28:41 +01:00
syscall.h tree-wide: replace config_enabled() with IS_ENABLED() 2016-08-04 08:50:07 -04:00
termios.h
thread_info.h MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
time.h MIPS: Remove "weak" from get_c0_compare_int() declaration 2015-09-03 12:07:38 +02:00
timex.h MIPS: Implement random_get_entropy with CP0 Random 2014-05-30 18:21:30 +02:00
tlb.h MIPS: Mask out limit field when calculating wired entry count 2016-11-24 16:44:16 +01:00
tlbdebug.h MIPS: Refactor dumping of TLB registers for r3k/r4k 2015-09-03 12:07:45 +02:00
tlbflush.h
tlbmisc.h
topology.h sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask() 2015-05-27 15:22:15 +02:00
traps.h
txx9irq.h MIPS/IRQCHIP: Move irq_chip from arch/mips to drivers/irqchip. 2015-06-21 21:52:50 +02:00
txx9pio.h
txx9tmr.h
types.h MIPS: Remove now unused definition of phys_t. 2014-11-24 22:47:31 +01:00
uaccess.h Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-10-15 09:26:12 -07:00
uasm.h MIPS: uasm: Add MTHI/MTLO instructions 2016-07-05 16:08:35 +02:00
unaligned.h
unistd.h sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL 2014-06-04 16:54:14 -07:00
uprobes.h uprobes: remove function declarations from arch/{mips,s390} 2016-10-07 18:46:30 -07:00
vdso.h MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime() 2015-11-11 08:36:41 +01:00
vga.h MIPS: Fix VGA_MAP_MEM macro. 2013-09-18 17:13:58 +02:00
vpe.h MIPS: MT: Remove "weak" from vpe_run() declaration 2015-08-26 15:23:40 +02:00
war.h
watch.h MIPS: Fix watchpoint restoration 2016-05-09 12:00:02 +02:00
wbflush.h