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Documentation: vm: Add 1GB large page support information
This patch adds 1GB large page support information in Documentation/vm/hugetlbpage.txt Reference: https://lkml.org/lkml/2014/10/31/366 Signed-off-by: Masanari Iida <standby24x7@gmail.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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The intent of this file is to give a brief summary of hugetlbpage support in
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The intent of this file is to give a brief summary of hugetlbpage support in
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the Linux kernel. This support is built on top of multiple page size support
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the Linux kernel. This support is built on top of multiple page size support
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that is provided by most modern architectures. For example, i386
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that is provided by most modern architectures. For example, x86 CPUs normally
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architecture supports 4K and 4M (2M in PAE mode) page sizes, ia64
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support 4K and 2M (1G if architecturally supported) page sizes, ia64
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architecture supports multiple page sizes 4K, 8K, 64K, 256K, 1M, 4M, 16M,
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architecture supports multiple page sizes 4K, 8K, 64K, 256K, 1M, 4M, 16M,
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256M and ppc64 supports 4K and 16M. A TLB is a cache of virtual-to-physical
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256M and ppc64 supports 4K and 16M. A TLB is a cache of virtual-to-physical
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translations. Typically this is a very scarce resource on processor.
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translations. Typically this is a very scarce resource on processor.
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