arm64: mm: Use non-global mappings for kernel space

Browse source

In preparation for unmapping the kernel whilst running in userspace,
make the kernel mappings non-global so we can avoid expensive TLB
invalidation on kernel exit to userspace.

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

...

This commit is contained in:

Will Deacon 2017-08-10 12:56:18 +01:00

parent 50c4c4e268

commit e046eb0c9b

2 changed files with 25 additions and 8 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

12

arch/arm64/include/asm/kernel-pgtable.h

View file

21

arch/arm64/include/asm/pgtable-prot.h

View file