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Groups > linux.kernel > #1736089
| From | Pavel Tatashin <pasha.tatashin@oracle.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v9 10/12] x86/kasan: use kasan_map_populate() |
| Date | 2017-09-20 22:30 +0200 |
| Message-ID | <urTN8-7TQ-29@gated-at.bofh.it> (permalink) |
| References | <urTDs-7Qc-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
To optimize the performance of struct page initialization, vmemmap_populate() will no longer zero memory. Therefore, we must use a new interface to allocate and map kasan shadow memory, that also zeroes memory for us. Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com> --- arch/x86/mm/kasan_init_64.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/mm/kasan_init_64.c b/arch/x86/mm/kasan_init_64.c index bc84b73684b7..2db95efd208e 100644 --- a/arch/x86/mm/kasan_init_64.c +++ b/arch/x86/mm/kasan_init_64.c @@ -23,7 +23,7 @@ static int __init map_range(struct range *range) start = (unsigned long)kasan_mem_to_shadow(pfn_to_kaddr(range->start)); end = (unsigned long)kasan_mem_to_shadow(pfn_to_kaddr(range->end)); - return vmemmap_populate(start, end, NUMA_NO_NODE); + return kasan_map_populate(start, end, NUMA_NO_NODE); } static void __init clear_pgds(unsigned long start, @@ -136,9 +136,9 @@ void __init kasan_init(void) kasan_mem_to_shadow((void *)PAGE_OFFSET + MAXMEM), kasan_mem_to_shadow((void *)__START_KERNEL_map)); - vmemmap_populate((unsigned long)kasan_mem_to_shadow(_stext), - (unsigned long)kasan_mem_to_shadow(_end), - NUMA_NO_NODE); + kasan_map_populate((unsigned long)kasan_mem_to_shadow(_stext), + (unsigned long)kasan_mem_to_shadow(_end), + NUMA_NO_NODE); kasan_populate_zero_shadow(kasan_mem_to_shadow((void *)MODULES_END), (void *)KASAN_SHADOW_END); -- 2.14.1
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[PATCH v9 00/12] complete deferred page initialization Pavel Tatashin <pasha.tatashin@oracle.com> - 2017-09-20 22:30 +0200 [PATCH v9 07/12] sparc64: optimized struct page zeroing Pavel Tatashin <pasha.tatashin@oracle.com> - 2017-09-20 22:30 +0200 [PATCH v9 10/12] x86/kasan: use kasan_map_populate() Pavel Tatashin <pasha.tatashin@oracle.com> - 2017-09-20 22:30 +0200
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