On Fri, Aug 27, 2021 at 01:21:02PM -0400, Tianyu Lan wrote:
> From: Tianyu Lan <Tianyu.Lan@xxxxxxxxxxxxx>
>
> Mark vmbus ring buffer visible with set_memory_decrypted() when
> establish gpadl handle.
>
> Signed-off-by: Tianyu Lan <Tianyu.Lan@xxxxxxxxxxxxx>
> ---
> Change since v3:
> * Change vmbus_teardown_gpadl() parameter and put gpadl handle,
> buffer and buffer size in the struct vmbus_gpadl.
> ---
> drivers/hv/channel.c | 36 ++++++++++++++++++++++++++++-----
> drivers/net/hyperv/hyperv_net.h | 1 +
> drivers/net/hyperv/netvsc.c | 16 +++++++++++----
> drivers/uio/uio_hv_generic.c | 14 +++++++++++--
> include/linux/hyperv.h | 8 +++++++-
> 5 files changed, 63 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
> index f3761c73b074..82650beb3af0 100644
> --- a/drivers/hv/channel.c
> +++ b/drivers/hv/channel.c
> @@ -17,6 +17,7 @@
> #include <linux/hyperv.h>
> #include <linux/uio.h>
> #include <linux/interrupt.h>
> +#include <linux/set_memory.h>
> #include <asm/page.h>
> #include <asm/mshyperv.h>
>
> @@ -474,6 +475,13 @@ static int __vmbus_establish_gpadl(struct vmbus_channel *channel,
> if (ret)
> return ret;
>
> + ret = set_memory_decrypted((unsigned long)kbuffer,
> + HVPFN_UP(size));
> + if (ret) {
> + pr_warn("Failed to set host visibility for new GPADL %d.\n", ret);
dev_warn()? You have access to a struct device, why not use it?
same for all other instances here.
thanks,
greg k-h
