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author | David S. Miller <davem@davemloft.net> | 2016-01-13 00:21:27 -0500 |
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committer | David S. Miller <davem@davemloft.net> | 2016-01-13 00:21:27 -0500 |
commit | ddb5388ffd0ad75d07e7b78181a0b579824ba6f0 (patch) | |
tree | be1e2bd103c69d7bbace3fffd97bc3d714bbc3d7 /arch/arm64/mm/flush.c | |
parent | net: netlink: Fix multicast group storage allocation for families with more than one groups (diff) | |
parent | Merge tag 'pm+acpi-4.5-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm (diff) | |
download | linux-dev-ddb5388ffd0ad75d07e7b78181a0b579824ba6f0.tar.xz linux-dev-ddb5388ffd0ad75d07e7b78181a0b579824ba6f0.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Diffstat (limited to 'arch/arm64/mm/flush.c')
-rw-r--r-- | arch/arm64/mm/flush.c | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/arch/arm64/mm/flush.c b/arch/arm64/mm/flush.c index c26b804015e8..46649d6e6c5a 100644 --- a/arch/arm64/mm/flush.c +++ b/arch/arm64/mm/flush.c @@ -34,19 +34,24 @@ void flush_cache_range(struct vm_area_struct *vma, unsigned long start, __flush_icache_all(); } +static void sync_icache_aliases(void *kaddr, unsigned long len) +{ + unsigned long addr = (unsigned long)kaddr; + + if (icache_is_aliasing()) { + __clean_dcache_area_pou(kaddr, len); + __flush_icache_all(); + } else { + flush_icache_range(addr, addr + len); + } +} + static void flush_ptrace_access(struct vm_area_struct *vma, struct page *page, unsigned long uaddr, void *kaddr, unsigned long len) { - if (vma->vm_flags & VM_EXEC) { - unsigned long addr = (unsigned long)kaddr; - if (icache_is_aliasing()) { - __flush_dcache_area(kaddr, len); - __flush_icache_all(); - } else { - flush_icache_range(addr, addr + len); - } - } + if (vma->vm_flags & VM_EXEC) + sync_icache_aliases(kaddr, len); } /* @@ -74,13 +79,11 @@ void __sync_icache_dcache(pte_t pte, unsigned long addr) if (!page_mapping(page)) return; - if (!test_and_set_bit(PG_dcache_clean, &page->flags)) { - __flush_dcache_area(page_address(page), - PAGE_SIZE << compound_order(page)); + if (!test_and_set_bit(PG_dcache_clean, &page->flags)) + sync_icache_aliases(page_address(page), + PAGE_SIZE << compound_order(page)); + else if (icache_is_aivivt()) __flush_icache_all(); - } else if (icache_is_aivivt()) { - __flush_icache_all(); - } } /* |