[0/9] xen/arm64: Get rid of READ/WRITE_SYSREG32

Message

Michal Orzel April 20, 2021, 7:08 a.m. UTC

The purpose of this patch series is to remove 32bit helper
macros READ/WRITE_SYSREG32 on arm64 as the idea of them is
not following the latest ARMv8 specification and mrs/msr instructions
are expecting 64bit values.
According to ARM DDI 0487G.a all the AArch64 system registers
are 64bit wide even though many of them have upper 32bit reserved.
This does not mean that in the newer versions of ARMv8 or in the next
architecture, some of the sysregs will get widen.
Also when dealing with system registers we should use register_t
type.

This patch series removes the use of READ/WRITE_SYSREG32
and replaces these calls with READ/WRITE_SYSREG. The change was
splited into several small patches to make the review proces easier.

This patch series focuses on removing READ/WRITE_SYSREG32.
There are still some AArch64 system registers defined as 32bit like cpsr
that should be changed later on. They were not changed as they did not appear
inside READ/WRITE_SYSREG32. The next thing to do is to also get rid of
vreg_emulate_sysreg32.

Michal Orzel (9):
  arm64/vfp: Get rid of READ/WRITE_SYSREG32
  arm/domain: Get rid of READ/WRITE_SYSREG32
  arm/gic: Get rid of READ/WRITE_SYSREG32
  arm/p2m: Get rid of READ/WRITE_SYSREG32
  arm/mm: Get rid of READ/WRITE_SYSREG32
  arm/page: Get rid of READ/WRITE_SYSREG32
  arm/time,vtimer: Get rid of READ/WRITE_SYSREG32
  arm: Change type of hsr to register_t
  xen/arm64: Remove READ/WRITE_SYSREG32 helper macros

 xen/arch/arm/arm64/entry.S            |  2 +-
 xen/arch/arm/arm64/traps.c            |  2 +-
 xen/arch/arm/arm64/vfp.c              | 12 ++--
 xen/arch/arm/arm64/vsysreg.c          |  3 +-
 xen/arch/arm/domain.c                 | 20 +++---
 xen/arch/arm/gic-v3-lpi.c             |  2 +-
 xen/arch/arm/gic-v3.c                 | 96 ++++++++++++++-------------
 xen/arch/arm/mm.c                     |  2 +-
 xen/arch/arm/p2m.c                    |  8 +--
 xen/arch/arm/time.c                   | 28 ++++----
 xen/arch/arm/traps.c                  | 24 ++++---
 xen/arch/arm/vcpreg.c                 | 29 ++++++--
 xen/arch/arm/vtimer.c                 | 10 +--
 xen/include/asm-arm/arm32/processor.h |  2 +-
 xen/include/asm-arm/arm64/processor.h |  5 +-
 xen/include/asm-arm/arm64/sysregs.h   |  5 --
 xen/include/asm-arm/arm64/vfp.h       |  6 +-
 xen/include/asm-arm/domain.h          |  6 +-
 xen/include/asm-arm/gic.h             |  6 +-
 xen/include/asm-arm/hsr.h             | 34 +++++++++-
 xen/include/asm-arm/page.h            |  4 +-
 21 files changed, 179 insertions(+), 127 deletions(-)