Re: [PATCH v2 4/4] target/arm: Add support for DC CVAP & DC CVADP ins

[Richard Henderson <richard.henderson@linaro.org>]

On 11/6/19 12:41 AM, Beata Michalska wrote:
> ARMv8.2 introduced support for Data Cache Clean instructions
> to PoP (point-of-persistence) - DC CVAP and PoDP (point-of-deep-persistence)
> - DV CVADP. Both specify conceptual points in a memory system where all writes
> that are to reach them are considered persistent.
> The support provided considers both to be actually the same so there is no
> distinction between the two. If none is available (there is no backing store
> for given memory) both will result in Data Cache Clean up to the point of
> coherency. Otherwise sync for the specified range shall be performed.
> 
> Signed-off-by: Beata Michalska <beata.michalska@linaro.org>
> ---
>  linux-user/elfload.c |  2 ++
>  target/arm/cpu.h     | 10 ++++++++++
>  target/arm/cpu64.c   |  1 +
>  target/arm/helper.c  | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>  4 files changed, 69 insertions(+)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~