Re: [PATCH RFC v2 08/10] vdpa: add vdpa simulator for block device

From: Stefano Garzarella
Date: Mon Feb 01 2021 - 03:31:34 EST


On Sun, Jan 31, 2021 at 05:31:43PM +0200, Max Gurtovoy wrote:

On 1/28/2021 4:41 PM, Stefano Garzarella wrote:
From: Max Gurtovoy <mgurtovoy@xxxxxxxxxx>

This will allow running vDPA for virtio block protocol.

Signed-off-by: Max Gurtovoy <mgurtovoy@xxxxxxxxxx>
[sgarzare: various cleanups/fixes]
Signed-off-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>
---
v2:
- rebased on top of other changes (dev_attr, get_config(), notify(), etc.)
- memset to 0 the config structure in vdpasim_blk_get_config()
- used vdpasim pointer in vdpasim_blk_get_config()

v1:
- Removed unused headers
- Used cpu_to_vdpasim*() to store config fields
- Replaced 'select VDPA_SIM' with 'depends on VDPA_SIM' since selected
option can not depend on other [Jason]
- Start with a single queue for now [Jason]
- Add comments to memory barriers
---
drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 145 +++++++++++++++++++++++++++
drivers/vdpa/Kconfig | 7 ++
drivers/vdpa/vdpa_sim/Makefile | 1 +
3 files changed, 153 insertions(+)
create mode 100644 drivers/vdpa/vdpa_sim/vdpa_sim_blk.c

diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
new file mode 100644
index 000000000000..999f9ca0b628
--- /dev/null
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
@@ -0,0 +1,145 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * VDPA simulator for block device.
+ *
+ * Copyright (c) 2020, Mellanox Technologies. All rights reserved.

I guess we can change the copyright from Mellanox to:

Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.

I'll update in the next version.

Thanks,
Stefano