Re: [PATCH v4] target/s390x: Implement the MVPG condition-code-option bit

[Richard Henderson]

On 3/3/21 5:28 AM, Thomas Huth wrote:
> From: Richard Henderson<richard.henderson@linaro.org>
>
> If the CCO bit is set, MVPG should not generate an exception but
> report page translation faults via a CC code.
>
> Create a new helper, access_prepare_nf, which can use probe_access_flags
> in non-faulting mode, and then handle watchpoints.
>
> Signed-off-by: Richard Henderson<richard.henderson@linaro.org>
> [thuth: Added logic to still inject protection exceptions]
> Signed-off-by: Thomas Huth<thuth@redhat.com>
> ---
>   v4: Add logic to inject protection exceptions if necessary

Works for me.  I was considering adding yet another cputlb interface to help 
with this, but this is sufficiently clean that I don't think it's required.


r~