arm64: Add support for CONFIG_DEBUG_VIRTUAL

Browse source

x86 has an option CONFIG_DEBUG_VIRTUAL to do additional checks
on virt_to_phys calls. The goal is to catch users who are calling
virt_to_phys on non-linear addresses immediately. This inclues callers
using virt_to_phys on image addresses instead of __pa_symbol. As features
such as CONFIG_VMAP_STACK get enabled for arm64, this becomes increasingly
important. Add checks to catch bad virt_to_phys usage.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

...

This commit is contained in:

Laura Abbott 2017-01-10 13:35:50 -08:00 • committed by Will Deacon

parent 2077be6783

commit ec6d06efb0

4 changed files with 61 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

arch/arm64/Kconfig

View file

31

arch/arm64/include/asm/memory.h

View file

2

arch/arm64/mm/Makefile

View file

30

arch/arm64/mm/physaddr.c

View file