Re: [PATCH] hw/sd/sdhci: Report error when guest access protected registers

[Bin Meng]

On Fri, Feb 19, 2021 at 1:56 AM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>
> The SDHC_SYSAD and SDHC_BLKSIZE can not be accessed while a
> transaction is in progress, see 'SD Host Controller Simplified
> Specification'
>
>   1.5) SD Command Generation
>
>   The Host Driver should not read the SDMA System Address, Block
>   Size and Block Count registers during a data transaction unless
>   the transfer is stopped because the value is changing and not
>   stable.
>
> Report guest intents as errors.
>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
> Based-on: <1613447214-81951-1-git-send-email-bmeng.cn@gmail.com>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>  hw/sd/sdhci.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
>

Reviewed-by: Bin Meng <bmeng.cn@gmail.com>