Re: [PATCH v15 1/5] arm/vpci: honor access size when returning an error

[Julien Grall <julien@xxxxxxx>]

Hi Stewart,

On 17/05/2024 18:06, Stewart Hildebrand wrote:
> From: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
>
> Guest can try to read config space using different access sizes: 8,
> 16, 32, 64 bits. We need to take this into account when we are
> returning an error back to MMIO handler, otherwise it is possible to
> provide more data than requested: i.e. guest issues LDRB instruction
> to read one byte, but we are writing 0xFFFFFFFFFFFFFFFF in the target
> register.
>
> Signed-off-by: Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>
> Signed-off-by: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
Acked-by: Julien Grall <jgrall@xxxxxxxxxx>

Cheers,

--
Julien Grall