linux/arch/arm64
Mark Rutland 25b92693a1 arm64: mm: convert cpu_do_switch_mm() to C
There's no reason that cpu_do_switch_mm() needs to be written as an
assembly function, and having it as a C function would make it easier to
maintain.

This patch converts cpu_do_switch_mm() to C, removing code that this
change makes redundant (e.g. the mmid macro). Since the header comment
was stale and the prototype now implies all the necessary information,
this comment is removed. The 'pgd_phys' argument is made a phys_addr_t
to match the return type of virt_to_phys().

At the same time, post_ttbr_update_workaround() is updated to use
IS_ENABLED(), which allows the compiler to figure out it can elide calls
for !CONFIG_CAVIUM_ERRATUM_27456 builds.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will@kernel.org>
[catalin.marinas@arm.com: change comments from asm-style to C-style]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2020-02-27 14:30:50 +00:00
..
boot ARMv8 Juno/Fast Models fix for v5.6 2020-02-11 14:47:09 -08:00
configs This pull request contains ARM64 defconfig changes for v5.6, please pull 2020-02-11 14:49:38 -08:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2020-01-28 15:38:56 -08:00
include arm64: mm: convert cpu_do_switch_mm() to C 2020-02-27 14:30:50 +00:00
kernel arm64: time: Replace <linux/clk-provider.h> by <linux/of_clk.h> 2020-02-12 17:26:38 +00:00
kvm ARM: Cleanups and corner case fixes 2020-01-31 09:30:41 -08:00
lib Merge branch 'for-next/asm-annotations' into for-next/core 2020-01-22 11:34:21 +00:00
mm arm64: mm: convert cpu_do_switch_mm() to C 2020-02-27 14:30:50 +00:00
net
xen arm64: xen: Use modern annotations for assembly functions 2020-01-09 16:09:42 +00:00
Kbuild
Kconfig arm64: fix NUMA Kconfig typos 2020-02-27 13:56:14 +00:00
Kconfig.debug arm64: mm: convert mm/dump.c to use walk_page_range() 2020-02-04 03:05:25 +00:00
Kconfig.platforms i.MX SoC update for 5.5: 2019-11-06 07:46:42 -08:00
Makefile arm64: Turn "broken gas inst" into real config option 2020-01-15 16:35:12 +00:00