BMC/Intel-BMC/linux.git/arch/um/include/asm/mmu_context.h, branch devIntel OpenBMC Linux kernel source tree (mirror)https://git.radix-linux.su/BMC/Intel-BMC/linux.git/atom?h=dev2014-11-19T10:54:13+00:00mm: Make arch_unmap()/bprm_mm_init() available to all architectures2014-11-19T10:54:13+00:00Dave Hansendave.hansen@linux.intel.com2014-11-18T18:23:50+00:00urn:sha1:62e88b1c00de9cb30d937841ed5debed871070b8
The x86 MPX patch set calls arch_unmap() and arch_bprm_mm_init()
from fs/exec.c, so we need at least a stub for them in all
architectures. They are only called under an #ifdef for
CONFIG_MMU=y, so we can at least restict this to architectures
with MMU support.
blackfin/c6x have no MMU support, so do not call arch_unmap().
They also do not include mm_hooks.h or mmu_context.h at all and
do not need to be touched.
s390, um and unicore32 do not use asm-generic/mm_hooks.h, so got
their own arch_unmap() versions. (I also moved um's
arch_dup_mmap() to be closer to the other mm_hooks.h functions).
xtensa only includes mm_hooks when MMU=y, which should be fine
since arch_unmap() is called only from MMU=y code.
For the rest, we use the stub copies of these functions in
asm-generic/mm_hook.h.
I cross compiled defconfigs for cris (to check NOMMU) and s390
to make sure that this works. I also checked a 64-bit build
of UML and all my normal x86 builds including PARAVIRT on and
off.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: linux-arch@vger.kernel.org
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/20141118182350.8B4AA2C2@viggo.jf.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
um: uml_dup_mmap() relies on ->mmap_sem being held, but activate_mm() doesn't hold it2012-03-21T01:29:50+00:00Al Viroviro@zeniv.linux.org.uk2012-02-23T06:37:19+00:00urn:sha1:ac2aca2817ca10ad30f86d0d3caa41ea8cc4f0f0
... while calling uml_dup_mmap()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
um: take um_mmu.h to asm/mmu.h, clean asm/mmu_context.h a bit2011-11-02T13:15:14+00:00Al Viroviro@ftp.linux.org.uk2011-08-18T19:09:09+00:00urn:sha1:4dc706c2f292b2c28016a27f400af84a62ec4a63
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
cpumask: use mm_cpumask() wrapper: um2009-09-24T00:04:51+00:00Rusty Russellrusty@rustcorp.com.au2009-09-24T15:34:51+00:00urn:sha1:fa40699b975131028a61aa8e095b0b17f350da40
Makes code futureproof against the impending change to mm->cpu_vm_mask.
It's also a chance to use the new cpumask_ ops which take a pointer
(the older ones are deprecated, but there's no hurry for arch code).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
x86, um: initial part of asm-um move2008-10-23T05:55:19+00:00Al Viroviro@zeniv.linux.org.uk2008-08-17T23:13:17+00:00urn:sha1:8ede0bdb63305d3353efd97e9af6210afb05734e
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>