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author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-05-05 15:36:59 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-05-05 15:36:59 -0700 |
commit | 03787ff6f9156e43019f3f4b69cb6212b3a47f65 (patch) | |
tree | 05dd4b8de6de3313f1afdaaa7636a4052ad4e634 /arch/xtensa/mm/tlb.c | |
parent | 5575eeb7b9f687ca4899e2d8721a9b17265d0060 (diff) | |
parent | 55b441be5cd600bf645a01b14900880a09941d4c (diff) | |
download | lwn-03787ff6f9156e43019f3f4b69cb6212b3a47f65.tar.gz lwn-03787ff6f9156e43019f3f4b69cb6212b3a47f65.zip |
Merge tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linux
Pull Xtensa fixes from Chris Zankel:
- Fixes allmodconfig, allnoconfig builds
- Adds highmem support
- Enables build-time exception table sorting.
* tag 'xtensa-next-20140503' of git://github.com/czankel/xtensa-linux:
xtensa: ISS: don't depend on CONFIG_TTY
xtensa: xt2000: drop redundant sysmem initialization
xtensa: add support for KC705
xtensa: xtfpga: introduce SoC I/O bus
xtensa: add HIGHMEM support
xtensa: optimize local_flush_tlb_kernel_range
xtensa: dump sysmem from the bootmem_init
xtensa: handle memmap kernel option
xtensa: keep sysmem banks ordered in mem_reserve
xtensa: keep sysmem banks ordered in add_sysmem_bank
xtensa: split bootparam and kernel meminfo
xtensa: enable sorting extable at build time
xtensa: export __{invalidate,flush}_dcache_range
xtensa: Export __invalidate_icache_range
Diffstat (limited to 'arch/xtensa/mm/tlb.c')
-rw-r--r-- | arch/xtensa/mm/tlb.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/xtensa/mm/tlb.c b/arch/xtensa/mm/tlb.c index ade623826788..5ece856c5725 100644 --- a/arch/xtensa/mm/tlb.c +++ b/arch/xtensa/mm/tlb.c @@ -149,6 +149,21 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page) local_irq_restore(flags); } +void local_flush_tlb_kernel_range(unsigned long start, unsigned long end) +{ + if (end > start && start >= TASK_SIZE && end <= PAGE_OFFSET && + end - start < _TLB_ENTRIES << PAGE_SHIFT) { + start &= PAGE_MASK; + while (start < end) { + invalidate_itlb_mapping(start); + invalidate_dtlb_mapping(start); + start += PAGE_SIZE; + } + } else { + local_flush_tlb_all(); + } +} + #ifdef CONFIG_DEBUG_TLB_SANITY static unsigned get_pte_for_vaddr(unsigned vaddr) |