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24603fdd19
linux/arch/arc/include/asm
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Vineet Gupta 24603fdd19 ARC: [mm] optimise icache flush for user mappings 
ARC icache doesn't snoop dcache thus executable pages need to be made
coherent before mapping into userspace in flush_icache_page().

However ARC700 CDU (hardware cache flush module) requires both vaddr
(index in cache) as well as paddr (tag match) to correctly identify a
line in the VIPT cache. A typical ARC700 SoC has aliasing icache, thus
the paddr only based flush_icache_page() API couldn't be implemented
efficiently. It had to loop thru all possible alias indexes and perform
the invalidate operation (ofcourse the cache op would only succeed at
the index(es) where tag matches - typically only 1, but the cost of
visiting all the cache-bins needs to paid nevertheless).

Turns out however that the vaddr (along with paddr) is available in
update_mmu_cache() hence better suits ARC icache flush semantics.
With both vaddr+paddr, exactly one flush operation per line is done.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2013-05-07 19:08:12 +05:30
..
arcregs.h ARC: Boot #2: Verbose Boot reporting / feature verification 2013-02-15 23:16:07 +05:30
asm-offsets.h ARC: Generic Headers 2013-01-28 12:34:21 +05:30
atomic.h ARC: Atomic/bitops/cmpxchg/barriers 2013-02-11 20:00:30 +05:30
barrier.h ARC: Atomic/bitops/cmpxchg/barriers 2013-02-11 20:00:30 +05:30
bitops.h ARC: Atomic/bitops/cmpxchg/barriers 2013-02-11 20:00:30 +05:30
bug.h ARC: Fundamental ARCH data-types/defines 2013-02-11 20:00:34 +05:30
cache.h ARC: Cache Flush Management 2013-02-15 23:15:50 +05:30
cacheflush.h ARC: [mm] optimise icache flush for user mappings 2013-05-07 19:08:12 +05:30
checksum.h ARC: Checksum/byteorder/swab routines 2013-02-11 20:00:34 +05:30
clk.h ARC: [DeviceTree] Convert some Kconfig items to runtime values 2013-02-15 23:15:56 +05:30
cmpxchg.h ARC: Atomic/bitops/cmpxchg/barriers 2013-02-11 20:00:30 +05:30
current.h ARC: [optim] Cache "current" in Register r25 2013-02-15 23:15:58 +05:30
defines.h ARC: Boot #2: Verbose Boot reporting / feature verification 2013-02-15 23:16:07 +05:30
delay.h ARC: Timers/counters/delay management 2013-02-11 20:00:39 +05:30
disasm.h ARC: disassembly (needed by kprobes/kgdb/unaligned-access-emul) 2013-02-15 23:16:04 +05:30
dma-mapping.h arc: fix dma_address assignment during dma_map_sg() 2013-03-19 15:34:53 +05:30
dma.h ARC: I/O and DMA Mappings 2013-02-15 23:15:54 +05:30
elf.h ARC: Remove SET_PERSONALITY (tracks cross-arch change) 2013-03-18 14:37:05 +05:30
entry.h ARC: Fix the typo in event identifier flags used by ptrace 2013-03-20 18:45:45 +05:30
exec.h ARC: Fundamental ARCH data-types/defines 2013-02-11 20:00:34 +05:30
futex.h ARC: Futex support 2013-02-15 23:16:00 +05:30
io.h ARC: Add support for ioremap_prot API 2013-02-15 23:16:11 +05:30
irq.h ARC: Prepare interrupt code for external controllers 2013-05-07 13:43:58 +05:30
irqflags.h ARC: Add implicit compiler barrier to raw_local_irq* functions 2013-04-08 16:10:26 -07:00
Kbuild ARC: UAPI Disintegrate arch/arc/include/asm 2013-02-15 23:16:11 +05:30
kdebug.h ARC: Fundamental ARCH data-types/defines 2013-02-11 20:00:34 +05:30
kgdb.h ARC: make allyesconfig build breakages 2013-03-11 19:01:09 +05:30
kprobes.h ARC: kprobes support 2013-02-15 23:16:05 +05:30
linkage.h ARC: Support for single cycle Close Coupled Mem (CCM) 2013-02-15 23:16:10 +05:30
mach_desc.h ARC: make a copy of flat DT 2013-02-26 14:25:18 +05:30
mmu_context.h ARC: SMP support 2013-02-15 23:16:02 +05:30
mmu.h ARC: MMU Context Management 2013-02-15 23:15:51 +05:30
module.h ARC: DWARF2 .debug_frame based stack unwinder 2013-02-15 23:16:03 +05:30
mutex.h ARC: SMP support 2013-02-15 23:16:02 +05:30
page.h ARC: Add support for ioremap_prot API 2013-02-15 23:16:11 +05:30
perf_event.h ARC: perf support (software counters only) 2013-02-15 23:16:09 +05:30
pgalloc.h ARC: Page Table Management 2013-02-15 23:15:51 +05:30
pgtable.h ARC: SMP support 2013-02-15 23:16:02 +05:30
processor.h ARC: SMP support 2013-02-15 23:16:02 +05:30
prom.h ARC: [Review] Multi-platform image #2: Board callback Infrastructure 2013-02-15 23:16:13 +05:30
ptrace.h ARC: Fix the typo in event identifier flags used by ptrace 2013-03-20 18:45:45 +05:30
sections.h ARC: [DeviceTree] Basic support 2013-02-15 23:15:55 +05:30
segment.h ARC: uaccess friends 2013-02-11 20:00:31 +05:30
serial.h ARC: [TB10x] Add support for TB10x platform 2013-05-07 13:43:59 +05:30
setup.h ARC: UAPI Disintegrate arch/arc/include/asm 2013-02-15 23:16:11 +05:30
smp.h ARC: [Review] Multi-platform image #7: SMP common code to use callbacks 2013-02-15 23:16:16 +05:30
spinlock_types.h ARC: Spinlock/rwlock/mutex primitives 2013-02-11 20:00:35 +05:30
spinlock.h ARC: Spinlock/rwlock/mutex primitives 2013-02-11 20:00:35 +05:30
string.h ARC: String library 2013-02-11 20:00:35 +05:30
switch_to.h ARC: Process-creation/scheduling/idle-loop 2013-02-11 20:00:38 +05:30
syscall.h ARC: Syscall support (no-legacy-syscall ABI) 2013-02-11 20:00:38 +05:30
syscalls.h ARC: ABIv3: fork/vfork wrappers not needed in "no-legacy-syscall" ABI 2013-03-11 19:01:10 +05:30
thread_info.h ARC: Fundamental ARCH data-types/defines 2013-02-11 20:00:34 +05:30
timex.h ARC: Timers/counters/delay management 2013-02-11 20:00:39 +05:30
tlb-mmu1.h ARC: MMU Exception Handling 2013-02-15 23:15:52 +05:30
tlb.h ARC: [mm] optimize needless full mm TLB flush on munmap 2013-05-07 13:44:00 +05:30
tlbflush.h ARC: TLB flush Handling 2013-02-15 23:15:53 +05:30
uaccess.h ARC: [optim] uaccess __{get,put}_user() optimised 2013-02-11 20:00:32 +05:30
unaligned.h ARC: Unaligned access emulation 2013-02-15 23:16:06 +05:30
unwind.h ARC: DWARF2 .debug_frame based stack unwinder 2013-02-15 23:16:03 +05:30