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Re: [PATCH v2 4/4] target/arm: Add support for DC CVAP & DC CVADP ins
From: |
Richard Henderson |
Subject: |
Re: [PATCH v2 4/4] target/arm: Add support for DC CVAP & DC CVADP ins |
Date: |
Wed, 6 Nov 2019 13:37:58 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 |
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 <address@hidden>
> ---
> 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 <address@hidden>
r~
[PATCH v2 3/4] migration: ram: Switch to ram block writeback, Beata Michalska, 2019/11/05
[PATCH v2 4/4] target/arm: Add support for DC CVAP & DC CVADP ins, Beata Michalska, 2019/11/05
- Re: [PATCH v2 4/4] target/arm: Add support for DC CVAP & DC CVADP ins,
Richard Henderson <=