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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-30 03:53:48 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-30 03:53:48 +0400 |
commit | 12679a2d7e3bfbdc7586e3e86d1ca90c46659363 (patch) | |
tree | d9c00f2e599d1c3e04a349229a6a19906d01f99e /arch/arm/mm/highmem.c | |
parent | 1c036588772d01655d851f75dffc27c971e072e2 (diff) | |
parent | b0df89868006517417251e02cc4ce5d4b0165885 (diff) | |
download | linux-12679a2d7e3bfbdc7586e3e86d1ca90c46659363.tar.xz |
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull more ARM updates from Russell King.
This got a fair number of conflicts with the <asm/system.h> split, but
also with some other sparse-irq and header file include cleanups. They
all looked pretty trivial, though.
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (59 commits)
ARM: fix Kconfig warning for HAVE_BPF_JIT
ARM: 7361/1: provide XIP_VIRT_ADDR for no-MMU builds
ARM: 7349/1: integrator: convert to sparse irqs
ARM: 7259/3: net: JIT compiler for packet filters
ARM: 7334/1: add jump label support
ARM: 7333/2: jump label: detect %c support for ARM
ARM: 7338/1: add support for early console output via semihosting
ARM: use set_current_blocked() and block_sigmask()
ARM: exec: remove redundant set_fs(USER_DS)
ARM: 7332/1: extract out code patch function from kprobes
ARM: 7331/1: extract out insn generation code from ftrace
ARM: 7330/1: ftrace: use canonical Thumb-2 wide instruction format
ARM: 7351/1: ftrace: remove useless memory checks
ARM: 7316/1: kexec: EOI active and mask all interrupts in kexec crash path
ARM: Versatile Express: add NO_IOPORT
ARM: get rid of asm/irq.h in asm/prom.h
ARM: 7319/1: Print debug info for SIGBUS in user faults
ARM: 7318/1: gic: refactor irq_start assignment
ARM: 7317/1: irq: avoid NULL check in for_each_irq_desc loop
ARM: 7315/1: perf: add support for the Cortex-A7 PMU
...
Diffstat (limited to 'arch/arm/mm/highmem.c')
-rw-r--r-- | arch/arm/mm/highmem.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/arch/arm/mm/highmem.c b/arch/arm/mm/highmem.c index 5a21505d7550..21b9e1bf9b77 100644 --- a/arch/arm/mm/highmem.c +++ b/arch/arm/mm/highmem.c @@ -69,15 +69,14 @@ void *kmap_atomic(struct page *page) * With debugging enabled, kunmap_atomic forces that entry to 0. * Make sure it was indeed properly unmapped. */ - BUG_ON(!pte_none(*(TOP_PTE(vaddr)))); + BUG_ON(!pte_none(get_top_pte(vaddr))); #endif - set_pte_ext(TOP_PTE(vaddr), mk_pte(page, kmap_prot), 0); /* * When debugging is off, kunmap_atomic leaves the previous mapping - * in place, so this TLB flush ensures the TLB is updated with the - * new mapping. + * in place, so the contained TLB flush ensures the TLB is updated + * with the new mapping. */ - local_flush_tlb_kernel_page(vaddr); + set_top_pte(vaddr, mk_pte(page, kmap_prot)); return (void *)vaddr; } @@ -96,8 +95,7 @@ void __kunmap_atomic(void *kvaddr) __cpuc_flush_dcache_area((void *)vaddr, PAGE_SIZE); #ifdef CONFIG_DEBUG_HIGHMEM BUG_ON(vaddr != __fix_to_virt(FIX_KMAP_BEGIN + idx)); - set_pte_ext(TOP_PTE(vaddr), __pte(0), 0); - local_flush_tlb_kernel_page(vaddr); + set_top_pte(vaddr, __pte(0)); #else (void) idx; /* to kill a warning */ #endif @@ -121,10 +119,9 @@ void *kmap_atomic_pfn(unsigned long pfn) idx = type + KM_TYPE_NR * smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); #ifdef CONFIG_DEBUG_HIGHMEM - BUG_ON(!pte_none(*(TOP_PTE(vaddr)))); + BUG_ON(!pte_none(get_top_pte(vaddr))); #endif - set_pte_ext(TOP_PTE(vaddr), pfn_pte(pfn, kmap_prot), 0); - local_flush_tlb_kernel_page(vaddr); + set_top_pte(vaddr, pfn_pte(pfn, kmap_prot)); return (void *)vaddr; } @@ -132,11 +129,9 @@ void *kmap_atomic_pfn(unsigned long pfn) struct page *kmap_atomic_to_page(const void *ptr) { unsigned long vaddr = (unsigned long)ptr; - pte_t *pte; if (vaddr < FIXADDR_START) return virt_to_page(ptr); - pte = TOP_PTE(vaddr); - return pte_page(*pte); + return pte_page(get_top_pte(vaddr)); } |