[PATCH 1/2] arm64: Change the cpuinfo_arm64 member type for some sysregs to u64

[Suzuki K Poulose]

On 11/05/2021 19:23, Catalin Marinas wrote:
> The architecture has been updated and the CTR_EL0, CNTFRQ_EL1,
> DCZID_EL0, MIDR_EL1, REVIDR_EL1 registers are all 64-bit, even if most
> of them have a RES0 top 32-bit.
> 
> Change their type to u64 in struct cpuinfo_arm64.
> 
> Signed-off-by: Catalin Marinas <catalin.marinas at arm.com>
> Cc: Will Deacon <will at kernel.org>
> Cc: Mark Rutland <mark.rutland at arm.com>
> Cc: Suzuki K Poulose <Suzuki.Poulose at arm.com>
> ---
> 
> CTR_EL0 gained a new field with MTE in the top 32-bit, TminLine. I have
> no idea what software is supposed to do with this field. I even have a
> Jira ticket from 2019 asking for it to be removed. So I don't think we
> should bother adding the mask/checks for it to the kernel.
> 
>   arch/arm64/include/asm/cpu.h | 10 +++++-----
>   arch/arm64/kernel/cpuinfo.c  |  2 +-
>   2 files changed, 6 insertions(+), 6 deletions(-)
> 

Reviewed-by: Suzuki K Poulose <suzuki.poulose at arm.com>