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ia64: make SPARSEMEM default and disable DISCONTIGMEM

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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>
This commit is contained in:
Mike Rapoport 2020-12-14 19:09:51 -08:00 committed by Linus Torvalds
parent ea34f78f3d
commit 214496cb18
1 changed files with 3 additions and 3 deletions

6
arch/ia64/Kconfig
View File

@ -288,6 +288,7 @@ config ARCH_SELECT_MEMORY_MODEL
config ARCH_DISCONTIGMEM_ENABLE config ARCH_DISCONTIGMEM_ENABLE
def_bool y def_bool y
depends on BROKEN
help help
Say Y to support efficient handling of discontiguous physical memory, Say Y to support efficient handling of discontiguous physical memory,
for architectures which are either NUMA (Non-Uniform Memory Access) for architectures which are either NUMA (Non-Uniform Memory Access)
@ -299,12 +300,11 @@ config ARCH_FLATMEM_ENABLE
config ARCH_SPARSEMEM_ENABLE config ARCH_SPARSEMEM_ENABLE
def_bool y def_bool y
depends on ARCH_DISCONTIGMEM_ENABLE
select SPARSEMEM_VMEMMAP_ENABLE select SPARSEMEM_VMEMMAP_ENABLE
config ARCH_DISCONTIGMEM_DEFAULT config ARCH_SPARSEMEM_DEFAULT
def_bool y def_bool y
depends on ARCH_DISCONTIGMEM_ENABLE depends on ARCH_SPARSEMEM_ENABLE
config NUMA config NUMA
bool "NUMA support" bool "NUMA support"