Re: [PATCH for-5.0?] target/arm: Fix ID_MMFR4 value on AArch64 'max' CPU

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 4/22/20 2:45 PM, Peter Maydell wrote:
> In commit 41a4bf1feab098da4cd the added code to set the CNP
> field in ID_MMFR4 for the AArch64 'max' CPU had a typo
> where it used the wrong variable name, resulting in ID_MMFR4
> fields AC2, XNX and LSM being wrong. Fix the typo.
> 
> Fixes: 41a4bf1feab098da4cd
> Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com>

Nice testing/catch Laurent!

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
> maybe 5.0 just because it's so trivial. I dunno...
> 
> There's also an error where we use the uint32_t u variable
> to update the 64-bit ID_AA64DFR0 register, but that's harmless
> because as it happens the top 32 bits of that register are
> all zeroes anyway, so we can just fix that in 5.1.
> 
>   target/arm/cpu64.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
> index 62d36f9e8d3..95d0c8c101a 100644
> --- a/target/arm/cpu64.c
> +++ b/target/arm/cpu64.c
> @@ -705,7 +705,7 @@ static void aarch64_max_initfn(Object *obj)
>           u = cpu->isar.id_mmfr4;
>           u = FIELD_DP32(u, ID_MMFR4, HPDS, 1); /* AA32HPD */
>           u = FIELD_DP32(u, ID_MMFR4, AC2, 1); /* ACTLR2, HACTLR2 */
> -        u = FIELD_DP32(t, ID_MMFR4, CNP, 1); /* TTCNP */
> +        u = FIELD_DP32(u, ID_MMFR4, CNP, 1); /* TTCNP */
>           cpu->isar.id_mmfr4 = u;
>   
>           u = cpu->isar.id_aa64dfr0;
>