arm64: mmu: move TLB maintenance from callers to create_mapping_late()
authorArd Biesheuvel <ard.biesheuvel@linaro.org>
Thu, 9 Mar 2017 20:52:00 +0000 (21:52 +0100)
committerCatalin Marinas <catalin.marinas@arm.com>
Thu, 23 Mar 2017 13:54:13 +0000 (13:54 +0000)
commitaa8c09be7a6f58e1b0dd19413d872fffdb054677
tree3ba85b112ee73ac63cd70c7c27791cb57e700cbb
parent63d7c6afc510a4a6265b119f7b988af0cc118889
arm64: mmu: move TLB maintenance from callers to create_mapping_late()

In preparation of refactoring the kernel mapping logic so that text regions
are never mapped writable, which would require adding explicit TLB
maintenance to new call sites of create_mapping_late() (which is currently
invoked twice from the same function), move the TLB maintenance from the
call site into create_mapping_late() itself, and change it from a full
TLB flush into a flush by VA, which is more appropriate here.

Also, given that create_mapping_late() has evolved into a routine that only
updates protection bits on existing mappings, rename it to
update_mapping_prot()

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/mm/mmu.c