Re: [PATCH V3 01/10] vhost: disable metadata prefetch optimization

[Jason Wang]

On 2019/8/7 äå2:54, Jason Wang wrote:
> From: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
>
> This seems to cause guest and host memory corruption.
> Disable for now until we get a better handle on that.
>
> Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
> ---
>   drivers/vhost/vhost.h | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
> index 819296332913..42a8c2a13ab1 100644
> --- a/drivers/vhost/vhost.h
> +++ b/drivers/vhost/vhost.h
> @@ -96,7 +96,7 @@ struct vhost_uaddr {
>   };
>   
>   #if defined(CONFIG_MMU_NOTIFIER) && ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE == 0
> -#define VHOST_ARCH_CAN_ACCEL_UACCESS 1
> +#define VHOST_ARCH_CAN_ACCEL_UACCESS 0
>   #else
>   #define VHOST_ARCH_CAN_ACCEL_UACCESS 0
>   #endif


Oops, this is unnecessary.

Will post V4.

Thanks