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David S. Miller b18eb2d779 sparc64: Fix huge TSB mapping on pre-UltraSPARC-III cpus. 
Access to the TSB hash tables during TLB misses requires that there be
an atomic 128-bit quad load available so that we fetch a matching TAG
and DATA field at the same time.

On cpus prior to UltraSPARC-III only virtual address based quad loads
are available.  UltraSPARC-III and later provide physical address
based variants which are easier to use.

When we only have virtual address based quad loads available this
means that we have to lock the TSB into the TLB at a fixed virtual
address on each cpu when it runs that process.  We can't just access
the PAGE_OFFSET based aliased mapping of these TSBs because we cannot
take a recursive TLB miss inside of the TLB miss handler without
risking running out of hardware trap levels (some trap combinations
can be deep, such as those generated by register window spill and fill
traps).

Without huge pages it's working perfectly fine, but when the huge TSB
got added another chunk of fixed virtual address space was not
allocated for this second TSB mapping.

So we were mapping both the 8K and 4MB TSBs to the same exact virtual
address, causing multiple TLB matches which gives undefined behavior.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-05-08 14:59:07 -07:00
..
agp.h agp: kill phys_to_gart() and gart_to_phys() 2009-08-03 09:05:00 +01:00
apb.h
asm-offsets.h kbuild: move asm-offsets.h to include/generated 2009-12-12 13:08:14 +01:00
asm.h sparc: Add asm/asm.h 2008-12-09 00:50:13 -08:00
asmmacro.h sparc32: add support for run-time patching of leon/sun single instructions 2012-05-27 23:52:43 -07:00
atomic.h
atomic_32.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
atomic_64.h sparc: Support atomic64_dec_if_positive properly. 2012-11-09 19:37:59 -08:00
auxio.h
auxio_32.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
auxio_64.h
backoff.h sparc64: Improvde documentation and readability of atomic backoff code. 2012-10-28 13:04:47 -07:00
barrier.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
barrier_32.h arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h 2014-01-12 10:37:15 +01:00
barrier_64.h arch: Introduce smp_load_acquire(), smp_store_release() 2014-01-12 10:37:17 +01:00
bbc.h
bitext.h
bitops.h
bitops_32.h bitops: remove minix bitops from asm/bitops.h 2011-03-23 19:46:22 -07:00
bitops_64.h sparc: Use popc when possible for ffs/__ffs/ffz. 2011-08-02 21:28:53 -07:00
btext.h sparc64: Faster early-boot framebuffer console. 2009-11-27 17:33:43 -08:00
bug.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
bugs.h sparc64: Implement SSTATE purely using notifiers and initcalls. 2008-09-02 00:49:38 -07:00
cache.h sparc32: Remove completely unused code from asm/cache.h 2012-05-19 21:15:37 -07:00
cacheflush.h sparc32: use flushi when run-time patching in per_cpu_patch 2012-05-20 13:33:36 -07:00
cacheflush_32.h sparc32: Move cache and TLB flushes over to method ops. 2012-05-13 20:49:31 -07:00
cacheflush_64.h sparc32: use flushi when run-time patching in per_cpu_patch 2012-05-20 13:33:36 -07:00
cachetlb_32.h sparc32: Move cache and TLB flushes over to method ops. 2012-05-13 20:49:31 -07:00
chafsr.h
checksum.h
checksum_32.h
checksum_64.h
chmctrl.h
clock.h
cmpxchg.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
cmpxchg_32.h sparc32: remove runtime btfix support 2012-05-14 14:05:09 -07:00
cmpxchg_64.h sparc64: Provide cmpxchg64() 2013-03-20 11:06:55 -07:00
compat.h sparc64: Make montmul/montsqr/mpmul usable in 32-bit threads. 2012-10-26 15:18:37 -07:00
compat_signal.h sparc: switch to generic sigaltstack 2013-02-03 18:16:17 -05:00
contregs.h sparc32: Remove sun4{,c} control reg definitions from contregs.h. 2012-05-11 21:29:17 -07:00
cpu_type.h sparc32: Remove sun4 and sun4c from enum sparc_cpu. 2012-05-12 00:23:23 -07:00
cpudata.h
cpudata_32.h sparc32: generic clockevent support 2012-04-15 10:28:50 -07:00
cpudata_64.h sparc64: Use a seperate counter for timer interrupts and NMI checks, like x86. 2010-04-12 22:37:07 -07:00
current.h
dcr.h
dcu.h
delay.h
delay_32.h
delay_64.h
device.h of: remove asm/of_device.h 2010-07-24 09:57:52 -06:00
dma-mapping.h sparc: dma-mapping: support debug_dma_mapping_error 2012-11-17 13:20:38 +01:00
dma.h sparc32: Convert mmu_* interfaces from btfixup to method ops. 2012-05-13 13:57:05 -07:00
ebus_dma.h sparc: Move EBUS DMA interfaces into seperate header file. 2008-08-29 23:10:21 -07:00
ecc.h
eeprom.h
elf.h
elf_32.h default SET_PERSONALITY() in linux/elf.h 2013-02-26 02:46:08 -05:00
elf_64.h sparc64: Add detection for features new in SPARC-T4. 2012-08-18 23:02:36 -07:00
estate.h
fb.h sparc: Really fix "console=" for serial consoles. 2010-08-16 12:26:09 -07:00
fbio.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
fhc.h sparc64: Rewrite central driver. 2008-08-31 20:56:15 -07:00
floppy.h
floppy_32.h sparc: Kill mmu_{un,}lockarea(). 2012-05-13 13:23:16 -07:00
floppy_64.h sparc: remove deprecated IRQF_DISABLED 2013-10-02 20:02:35 -04:00
fpumacro.h
ftrace.h sparc64: Add proper dynamic ftrace support. 2009-06-16 04:56:53 -07:00
futex.h
futex_32.h
futex_64.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
gpio.h gpiolib/arches: Centralise bolierplate asm/gpio.h 2012-05-11 18:00:14 -06:00
hardirq.h
hardirq_32.h hardirq: Make hardirq bits generic 2013-11-13 20:21:46 +01:00
hardirq_64.h hardirq: Make hardirq bits generic 2013-11-13 20:21:46 +01:00
head.h
head_32.h sparc: Consistently use 'wr' and 'rd' instructions for ASRs. 2013-04-06 17:51:48 -04:00
head_64.h
hibernate.h sparc64: Hibernation support 2013-03-20 11:06:54 -07:00
highmem.h sparc32: move kmap_init() to highmem.c 2012-07-26 16:46:17 -07:00
hugetlb.h mm/hugetlb: add more arch-defined huge_pte functions 2013-04-29 15:54:33 -07:00
hvtramp.h
hw_irq.h
hypervisor.h sparc64: Add hypervisor interfaces for SPARC-T4 perf counter access. 2012-08-18 23:03:53 -07:00
ide.h
idprom.h
intr_queue.h
io-unit.h sparc32: Kill iounit_map_dma_*(). 2008-08-29 02:15:23 -07:00
io.h sparc: add {read,write}*_be routines 2011-05-12 13:44:29 -07:00
io_32.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
io_64.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
ioctls.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
iommu.h
iommu_32.h sparc: Remove generic SBUS probing layer. 2008-08-29 02:15:21 -07:00
iommu_64.h sparc64: Get rid of pci_controller_info. 2008-09-10 23:07:41 -07:00
irq.h
irq_32.h sparc32: genirq support 2011-04-19 22:11:40 -07:00
irq_64.h nmi watchdog: do not use cpp symbol in Kconfig 2012-03-23 16:58:31 -07:00
irqflags.h
irqflags_32.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
irqflags_64.h sparc/irqs: Do not trace arch_local_{*,irq_*} functions 2011-07-06 08:00:29 -07:00
jump_label.h compiler/gcc4: Add quirk for 'asm goto' miscompilation bug 2013-10-11 07:39:14 +02:00
Kbuild locking/mcs: Allow architecture specific asm files to be used for contended case 2014-02-09 21:18:52 +01:00
kdebug.h
kdebug_32.h sparc32: kernel/trace/trace.c wants DIE_OOPS 2008-11-01 21:44:01 -07:00
kdebug_64.h sparc64: Implement NMI watchdog on capable cpus. 2009-01-30 00:03:53 -08:00
kgdb.h
kmap_types.h kmap_types: make most arches use generic header file 2009-06-16 19:47:51 -07:00
kprobes.h
ldc.h
leon.h sparc32, leon: Require separate snoop tags set to regard snooping to be enabled 2013-07-10 13:35:52 -07:00
leon_amba.h sparc32, leon: Remove separate "ticker" timer for SMP 2013-06-19 02:10:29 -07:00
leon_pci.h sparc32,leon: add support for PCI busn resource for GRPCI2 2013-03-20 11:06:53 -07:00
lsu.h
machines.h sparc32: Trivial removal of sun4c references in comments. 2012-05-12 00:35:45 -07:00
mbus.h sparc32: Remove cypress cpu support. 2012-05-15 10:22:00 -07:00
mc146818rtc.h
mc146818rtc_32.h
mc146818rtc_64.h sparc64: Use generic CMOS driver. 2008-08-29 14:16:48 -07:00
mdesc.h sparc64: Probe cpu page size support more portably. 2012-09-06 19:01:25 -07:00
memctrl.h sparc64: Add generic interface for registering a dimm printing handler. 2008-08-24 22:08:34 -07:00
mman.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
mmu.h
mmu_32.h sparc32: add irq + smp declarations to headers 2011-03-16 18:19:08 -07:00
mmu_64.h sparc64: Move from 4MB to 8MB huge pages. 2013-11-12 15:22:34 -08:00
mmu_context.h
mmu_context_32.h sparc32: centralize all mmu context handling in srmmu.c 2012-07-26 16:46:16 -07:00
mmu_context_64.h sparc64: Do not save/restore interrupts in get_new_mmu_context() 2013-04-08 22:50:47 -04:00
mmzone.h Fix node_start/end_pfn() definition for mm/page_cgroup.c 2011-06-27 14:13:09 -07:00
msi.h
mxcc.h
nmi.h sparc64: Initial hw perf counter support. 2009-09-10 06:28:20 -07:00
ns87303.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
obio.h sparc32: move smp ipi to method ops 2012-05-14 14:05:07 -07:00
openprom.h sparc: Pass buffer pointer all the way down to prom_{get,put}char(). 2010-11-30 14:33:29 -08:00
oplib.h
oplib_32.h sparc: fix format string argument for prom_printf() 2012-10-02 23:20:34 -04:00
oplib_64.h sparc: fix format string argument for prom_printf() 2012-10-02 23:20:34 -04:00
page.h
page_32.h sparc32: drop sparc_unmapped_base 2012-07-26 16:46:16 -07:00
page_64.h sparc64: Move to 64-bit PGDs and PMDs. 2013-11-12 15:22:35 -08:00
parport.h SPARC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
pbm.h
pci.h pci-dma: add linux/pci-dma.h to linux/pci.h 2010-03-12 15:52:42 -08:00
pci_32.h PCI: collapse pcibios_resource_to_bus 2012-02-23 20:19:04 -07:00
pci_64.h PCI: collapse pcibios_resource_to_bus 2012-02-23 20:19:04 -07:00
pcic.h sparc32: added CONFIG_PCIC_PCI Kconfig setting 2011-06-02 14:32:37 -07:00
pcr.h sparc64: Add PCR ops for SPARC-T4. 2012-08-18 23:26:19 -07:00
percpu.h
percpu_32.h
percpu_64.h sparc64: Get rid of real_setup_per_cpu_areas(). 2009-06-16 04:56:23 -07:00
perf_event.h perf, arch: Cleanup perf-pmu init vs lockup-detector 2010-11-26 15:14:56 +01:00
pgalloc.h
pgalloc_32.h sparc32: drop quicklist 2012-07-26 16:46:16 -07:00
pgalloc_64.h sparc64: Support transparent huge pages. 2012-10-09 16:23:06 +09:00
pgtable.h
pgtable_32.h consolidate io_remap_pfn_range definitions 2013-06-29 12:46:35 +04:00
pgtable_64.h sparc64: Fix huge TSB mapping on pre-UltraSPARC-III cpus. 2014-05-08 14:59:07 -07:00
pgtsrmmu.h sparc32: srmmu_probe now knows about leon too 2012-05-27 23:52:51 -07:00
pil.h sparc64: Reschedule KGDB capture to a software interrupt. 2009-03-18 23:51:57 -07:00
processor.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
processor_32.h sparc idle: rename pm_idle to sparc_idle 2013-02-17 23:36:56 -05:00
processor_64.h sparc64: Kill __ARCH_WANT_UNLOCKED_CTXSW 2013-03-20 12:09:01 -07:00
prom.h of: move of_address_to_resource and of_iomap declarations from sparc 2013-10-09 20:04:09 -05:00
psr.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
ptrace.h Merge commit '517ffce4e1' into arch-sparc 2012-11-16 20:49:06 -05:00
ross.h
rwsem.h rwsem: Move duplicate function prototypes to linux/rwsem.h 2011-01-27 12:30:39 +01:00
sbi.h
scatterlist.h remove needless ISA_DMA_THRESHOLD 2010-08-07 18:15:50 +02:00
scratchpad.h
seccomp.h x86-64: seccomp: fix 32/64 syscall hole 2009-03-02 15:41:30 -08:00
sections.h sparc32: add support for run-time patching of leon/sun single instructions 2012-05-27 23:52:43 -07:00
setup.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
sfafsr.h
sfp-machine.h
sfp-machine_32.h
sfp-machine_64.h
shmparam.h
shmparam_32.h sparc32: Remove sun4 and sun4c from enum sparc_cpu. 2012-05-12 00:23:23 -07:00
shmparam_64.h
sigcontext.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
siginfo.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
signal.h consolidate kernel-side struct sigaction declarations 2013-02-03 15:09:22 -05:00
smp.h
smp_32.h sparc:cleanup unused code in smp_32.h 2013-03-31 19:29:12 -04:00
smp_64.h sparc64, sched: Remove unused sparc64_multi_core 2014-03-11 12:05:47 +01:00
sparsemem.h sparc64: Fix inconsistent max-physical-address defines. 2013-11-12 15:22:34 -08:00
spinlock.h
spinlock_32.h sparc32: unbreak arch_write_unlock() 2011-08-15 14:35:19 -07:00
spinlock_64.h sparc64: remove unnecessary macros from spinlock_64.h 2011-08-15 14:35:18 -07:00
spinlock_types.h locking: Convert raw_rwlock to arch_rwlock 2009-12-14 23:55:32 +01:00
spitfire.h sparc64: correctly recognize SPARC64-X chips 2013-03-11 05:06:27 -07:00
stacktrace.h
starfire.h sparc64: Delete starfire_cpu_setup(). 2008-08-31 01:40:12 -07:00
string.h
string_32.h sparc32: Remove inline strncmp "optimization" for constant counts. 2012-05-11 19:53:29 -07:00
string_64.h sparc: Stop trying to be so fancy and use __builtin_{memcpy,memset}() 2009-12-10 23:32:10 -08:00
sunbpp.h
swift.h
switch_to.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
switch_to_32.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
switch_to_64.h sparc64: cleanup: Rename ret_from_syscall to ret_from_fork 2013-07-31 19:10:04 -07:00
syscall.h tracing: Unify arch_syscall_addr() implementations 2010-02-17 13:07:21 +01:00
syscalls.h sparc32: switch to generic sys_execve() 2012-10-16 19:03:53 -04:00
termbits.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
termios.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
thread_info.h
thread_info_32.h preempt: Make PREEMPT_ACTIVE generic 2013-11-13 20:21:47 +01:00
thread_info_64.h Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-11-19 10:40:00 -08:00
timer.h
timer_32.h sparc32: remove runtime btfix support 2012-05-14 14:05:09 -07:00
timer_64.h SPARC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
timex.h
timex_32.h sparc32: generic clockevent support 2012-04-15 10:28:50 -07:00
timex_64.h
tlb.h
tlb_32.h
tlb_64.h sparc: mmu_gather rework 2011-05-25 08:39:13 -07:00
tlbflush.h
tlbflush_32.h sparc32: Move cache and TLB flushes over to method ops. 2012-05-13 20:49:31 -07:00
tlbflush_64.h sparc64: fix build regession 2013-11-18 15:07:35 -08:00
topology.h
topology_32.h
topology_64.h sched: Remove unused mc_capable() and smt_capable() 2014-03-11 12:05:45 +01:00
trap_block.h sparc64: Store per-cpu offset in trap_block[] 2009-06-16 04:56:11 -07:00
traps.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
tsb.h sparc64: Fix huge PMD invalidation. 2014-05-03 22:31:52 -07:00
tsunami.h
ttable.h sparc64: Make montmul/montsqr/mpmul usable in 32-bit threads. 2012-10-26 15:18:37 -07:00
turbosparc.h
uaccess.h sparc: Fix user_addr_max() definition. 2012-05-24 13:41:58 -07:00
uaccess_32.h sparc: use the new generic strnlen_user() function 2012-05-26 11:33:54 -07:00
uaccess_64.h Revert "sparc64: Fix __copy_{to,from}_user_inatomic defines." 2014-01-04 17:55:19 -08:00
unaligned.h
unistd.h consolidate cond_syscall and SYSCALL_ALIAS declarations 2013-03-03 22:55:19 -05:00
upa.h
user.h
vaddrs.h sparc32: drop fixmap.h 2012-07-26 16:46:16 -07:00
vga.h BUG: headers with BUG/BUG_ON etc. need linux/bug.h 2012-03-04 17:54:34 -05:00
viking.h
vio.h powerpc+sparc/vio: Modernize driver registration 2012-03-28 11:33:24 +11:00
visasm.h sparc64: Fix sparse warnings in visemul.c 2008-09-11 23:46:40 -07:00
winmacro.h sparc32: Implement hard_smp_processor_id() via instruction patching. 2012-05-14 13:31:38 -07:00
xor.h
xor_32.h
xor_64.h sparc64: Future proof Niagara cpu detection. 2011-09-16 14:21:33 -07:00