linux/arch/ia64
Mike Rapoport ea34f78f3d ia64: forbid using VIRTUAL_MEM_MAP with FLATMEM
Virtual memory map was intended to avoid wasting memory on the memory map
on systems with large holes in the physical memory layout. Long ago it been
superseded first by DISCONTIGMEM and then by SPARSEMEM. Moreover,
SPARSEMEM_VMEMMAP provide the same functionality in much more portable way.

As the first step to removing the VIRTUAL_MEM_MAP forbid it's usage with
FLATMEM and panic on systems with large holes in the physical memory
layout that try to run FLATMEM kernels.

Link: https://lkml.kernel.org/r/20201101170454.9567-7-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>
2020-12-15 12:13:42 -08:00
..
configs ia64: Use libata instead of the legacy ide driver in defconfigs 2020-09-11 09:38:00 -07:00
hp/common dma-mapping: split <linux/dma-mapping.h> 2020-10-06 07:07:03 +02:00
include ia64: forbid using VIRTUAL_MEM_MAP with FLATMEM 2020-12-15 12:13:42 -08:00
kernel sched/idle: Fix arch_cpu_idle() vs tracing 2020-11-24 16:47:35 +01:00
lib Merge branch 'work.csum_and_copy' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-12 16:24:13 -07:00
mm ia64: forbid using VIRTUAL_MEM_MAP with FLATMEM 2020-12-15 12:13:42 -08:00
oprofile ia64: Remove perfmon 2020-09-11 09:34:32 -07:00
pci ia64: remove support for machvecs 2019-08-16 14:32:26 -07:00
scripts ia64: convert unwcheck.py to python3 2018-03-05 14:35:01 -08:00
uv ia64: remove support for machvecs 2019-08-16 14:32:26 -07:00
install.sh
Kconfig ia64: forbid using VIRTUAL_MEM_MAP with FLATMEM 2020-12-15 12:13:42 -08:00
Kconfig.debug ia64: remove support for machvecs 2019-08-16 14:32:26 -07:00
Makefile kbuild: preprocess module linker script 2020-09-25 00:36:41 +09:00