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authorToshi Kani <toshi.kani@hp.com>2015-04-14 15:47:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-14 16:49:04 -0700
commite61ce6ade404ef17bd63d62bec78e29047a47b47 (patch)
tree4a3e14abad0216e51f781b2776562829febe2626 /mm/vmalloc.c
parent0ddab1d2ed664c85c95488eef569786a84aedf37 (diff)
mm: change ioremap to set up huge I/O mappings
ioremap_pud_range() and ioremap_pmd_range() are changed to create huge I/O mappings when their capability is enabled, and a request meets required conditions -- both virtual & physical addresses are aligned by their huge page size, and a requested range fufills their huge page size. When pud_set_huge() or pmd_set_huge() returns zero, i.e. no-operation is performed, the code simply falls back to the next level. The changes are only enabled when CONFIG_HAVE_ARCH_HUGE_VMAP is defined on the architecture. Signed-off-by: Toshi Kani <toshi.kani@hp.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Robert Elliott <Elliott@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmalloc.c')
0 files changed, 0 insertions, 0 deletions