Revision d3fccc7ef831d1d829b4da5eaa081db55b1e38f3 authored by Ard Biesheuvel on 10 November 2014, 08:33:56 UTC, committed by Paolo Bonzini on 26 November 2014, 13:40:45 UTC
This reverts commit 85c8555ff0 ("KVM: check for !is_zero_pfn() in
kvm_is_mmio_pfn()") and renames the function to kvm_is_reserved_pfn.
The problem being addressed by the patch above was that some ARM code
based the memory mapping attributes of a pfn on the return value of
kvm_is_mmio_pfn(), whose name indeed suggests that such pfns should
be mapped as device memory.
However, kvm_is_mmio_pfn() doesn't do quite what it says on the tin,
and the existing non-ARM users were already using it in a way which
suggests that its name should probably have been 'kvm_is_reserved_pfn'
from the beginning, e.g., whether or not to call get_page/put_page on
it etc. This means that returning false for the zero page is a mistake
and the patch above should be reverted.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 parent bb55e9b
| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 20.9 KB |
| Kconfig.debug | -rw-r--r-- | 1015 bytes |
| Makefile | -rw-r--r-- | 2.3 KB |
| backing-dev.c | -rw-r--r-- | 16.9 KB |
| balloon_compaction.c | -rw-r--r-- | 6.8 KB |
| bootmem.c | -rw-r--r-- | 20.8 KB |
| cleancache.c | -rw-r--r-- | 12.7 KB |
| cma.c | -rw-r--r-- | 10.9 KB |
| compaction.c | -rw-r--r-- | 42.0 KB |
| debug-pagealloc.c | -rw-r--r-- | 2.1 KB |
| debug.c | -rw-r--r-- | 6.4 KB |
| dmapool.c | -rw-r--r-- | 13.7 KB |
| early_ioremap.c | -rw-r--r-- | 5.4 KB |
| fadvise.c | -rw-r--r-- | 3.6 KB |
| failslab.c | -rw-r--r-- | 1.3 KB |
| filemap.c | -rw-r--r-- | 70.7 KB |
| filemap_xip.c | -rw-r--r-- | 11.3 KB |
| fremap.c | -rw-r--r-- | 7.3 KB |
| frontswap.c | -rw-r--r-- | 13.4 KB |
| gup.c | -rw-r--r-- | 29.5 KB |
| highmem.c | -rw-r--r-- | 11.8 KB |
| huge_memory.c | -rw-r--r-- | 78.2 KB |
| hugetlb.c | -rw-r--r-- | 98.1 KB |
| hugetlb_cgroup.c | -rw-r--r-- | 10.3 KB |
| hwpoison-inject.c | -rw-r--r-- | 3.3 KB |
| init-mm.c | -rw-r--r-- | 619 bytes |
| internal.h | -rw-r--r-- | 12.8 KB |
| interval_tree.c | -rw-r--r-- | 3.2 KB |
| iov_iter.c | -rw-r--r-- | 21.0 KB |
| kmemcheck.c | -rw-r--r-- | 2.9 KB |
| kmemleak-test.c | -rw-r--r-- | 3.2 KB |
| kmemleak.c | -rw-r--r-- | 53.2 KB |
| ksm.c | -rw-r--r-- | 63.3 KB |
| list_lru.c | -rw-r--r-- | 3.4 KB |
| maccess.c | -rw-r--r-- | 1.6 KB |
| madvise.c | -rw-r--r-- | 14.1 KB |
| memblock.c | -rw-r--r-- | 44.7 KB |
| memcontrol.c | -rw-r--r-- | 173.8 KB |
| memory-failure.c | -rw-r--r-- | 47.8 KB |
| memory.c | -rw-r--r-- | 102.3 KB |
| memory_hotplug.c | -rw-r--r-- | 51.4 KB |
| mempolicy.c | -rw-r--r-- | 71.0 KB |
| mempool.c | -rw-r--r-- | 10.7 KB |
| migrate.c | -rw-r--r-- | 48.9 KB |
| mincore.c | -rw-r--r-- | 7.8 KB |
| mlock.c | -rw-r--r-- | 22.8 KB |
| mm_init.c | -rw-r--r-- | 5.0 KB |
| mmap.c | -rw-r--r-- | 88.5 KB |
| mmu_context.c | -rw-r--r-- | 1.3 KB |
| mmu_notifier.c | -rw-r--r-- | 10.5 KB |
| mmzone.c | -rw-r--r-- | 2.4 KB |
| mprotect.c | -rw-r--r-- | 10.5 KB |
| mremap.c | -rw-r--r-- | 15.1 KB |
| msync.c | -rw-r--r-- | 2.7 KB |
| nobootmem.c | -rw-r--r-- | 10.7 KB |
| nommu.c | -rw-r--r-- | 53.4 KB |
| oom_kill.c | -rw-r--r-- | 20.0 KB |
| page-writeback.c | -rw-r--r-- | 74.2 KB |
| page_alloc.c | -rw-r--r-- | 181.9 KB |
| page_cgroup.c | -rw-r--r-- | 12.0 KB |
| page_io.c | -rw-r--r-- | 9.5 KB |
| page_isolation.c | -rw-r--r-- | 8.6 KB |
| pagewalk.c | -rw-r--r-- | 5.9 KB |
| percpu-km.c | -rw-r--r-- | 2.8 KB |
| percpu-vm.c | -rw-r--r-- | 10.0 KB |
| percpu.c | -rw-r--r-- | 66.2 KB |
| pgtable-generic.c | -rw-r--r-- | 5.2 KB |
| process_vm_access.c | -rw-r--r-- | 10.2 KB |
| quicklist.c | -rw-r--r-- | 2.4 KB |
| readahead.c | -rw-r--r-- | 15.6 KB |
| rmap.c | -rw-r--r-- | 48.6 KB |
| shmem.c | -rw-r--r-- | 89.7 KB |
| slab.c | -rw-r--r-- | 106.8 KB |
| slab.h | -rw-r--r-- | 9.9 KB |
| slab_common.c | -rw-r--r-- | 23.7 KB |
| slob.c | -rw-r--r-- | 15.7 KB |
| slub.c | -rw-r--r-- | 125.0 KB |
| sparse-vmemmap.c | -rw-r--r-- | 6.0 KB |
| sparse.c | -rw-r--r-- | 20.9 KB |
| swap.c | -rw-r--r-- | 31.8 KB |
| swap_state.c | -rw-r--r-- | 12.9 KB |
| swapfile.c | -rw-r--r-- | 77.0 KB |
| truncate.c | -rw-r--r-- | 24.4 KB |
| util.c | -rw-r--r-- | 9.4 KB |
| vmacache.c | -rw-r--r-- | 3.1 KB |
| vmalloc.c | -rw-r--r-- | 68.1 KB |
| vmpressure.c | -rw-r--r-- | 11.4 KB |
| vmscan.c | -rw-r--r-- | 108.6 KB |
| vmstat.c | -rw-r--r-- | 38.1 KB |
| workingset.c | -rw-r--r-- | 13.6 KB |
| zbud.c | -rw-r--r-- | 17.9 KB |
| zpool.c | -rw-r--r-- | 9.5 KB |
| zsmalloc.c | -rw-r--r-- | 30.1 KB |
| zswap.c | -rw-r--r-- | 24.9 KB |
Computing file changes ...
