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authorMike Rapoport <rppt@linux.ibm.com>2020-12-14 19:09:51 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-15 12:13:42 -0800
commit214496cb18700fd7c5206ac33768876dbf68b4df (patch)
tree32f825f452063f4795dfbd9e185a1cdac6a64049 /mm/mmzone.c
parentea34f78f3df62e531cf2beca997ff6bfae2b1e0d (diff)
downloadlinux-214496cb18700fd7c5206ac33768876dbf68b4df.tar.bz2
ia64: make SPARSEMEM default and disable DISCONTIGMEM
SPARSEMEM memory model suitable for systems with large holes in their phyiscal memory layout. With SPARSEMEM_VMEMMAP enabled it provides pfn_to_page() and page_to_pfn() as fast as FLATMEM. Make it the default memory model for IA-64 and disable DISCONTIGMEM which is considered obsolete for quite some time. Link: https://lkml.kernel.org/r/20201101170454.9567-8-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Meelis Roos <mroos@linux.ee> Cc: Michael Schmitz <schmitzmic@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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