[PATCH v2 0/2] arm64: Taint the kernel on different GMID_EL1.BS

[Catalin Marinas]

Hi,

An updated version of the GMID_EL1.BS sanity check since the first one
broke the boot on CPUs not supporting MTE.

Changes since v1 [1]:

- Add an id_aa64pfr1_mte() function to check whether the CPU supports
  MTE before reading the GMID_EL1 register and updating the sanitised
  one

- Dropped Mark's ack on the second patch because of the changes.

[1] https://lore.kernel.org/r/20210511182322.3830-1-catalin.marinas@arm.com

Catalin Marinas (2):
  arm64: Change the cpuinfo_arm64 member type for some sysregs to u64
  arm64: Check if GMID_EL1.BS is the same on all CPUs

 arch/arm64/include/asm/cpu.h        | 11 ++++++-----
 arch/arm64/include/asm/cpufeature.h |  7 +++++++
 arch/arm64/kernel/cpufeature.c      | 21 +++++++++++++++++++++
 arch/arm64/kernel/cpuinfo.c         |  5 ++++-
 4 files changed, 38 insertions(+), 6 deletions(-)