linux-kernel - RE: [PATCH v2 5/7] tools: hv: Add new fcopy application based on uio driver

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Message-ID:
 <SJ1PR21MB3457E5B4D852A914CD691E53CE322@SJ1PR21MB3457.namprd21.prod.outlook.com>
Date: Thu, 21 Mar 2024 16:42:44 +0000
From: Long Li <longli@...rosoft.com>
To: Saurabh Sengar <ssengar@...ux.microsoft.com>, KY Srinivasan
	<kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>,
	"wei.liu@...nel.org" <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>
CC: Saurabh Singh Sengar <ssengar@...rosoft.com>
Subject: RE: [PATCH v2 5/7] tools: hv: Add new fcopy application based on uio
 driver

> Subject: [PATCH v2 5/7] tools: hv: Add new fcopy application based on uio driver
> 
> New fcopy application using uio_hv_generic driver. This application copies file
> from Hyper-V host to guest VM.
> 
> A big part of this code is copied from tools/hv/hv_fcopy_daemon.c which this new
> application is replacing.
> 
> Signed-off-by: Saurabh Sengar <ssengar@...ux.microsoft.com>
> ---
> [V2]
> - Improve commit message.
> - Change (4 * 4096) to 0x4000 for ring buffer size
> - Removed some unnecessary type casting.
> - Mentioned in file copy right header that this code is copied.
> - Changed the print from "Registration failed" to "Signal to host failed".
> - Fixed mask for rx buffer interrupt to 0 before waiting for interrupt.
> 
>  tools/hv/Build                 |   3 +-
>  tools/hv/Makefile              |  10 +-
>  tools/hv/hv_fcopy_uio_daemon.c | 490
> +++++++++++++++++++++++++++++++++
>  3 files changed, 497 insertions(+), 6 deletions(-)  create mode 100644
> tools/hv/hv_fcopy_uio_daemon.c
> 
> diff --git a/tools/hv/Build b/tools/hv/Build index 6cf51fa4b306..7d1f1698069b
> 100644
> --- a/tools/hv/Build
> +++ b/tools/hv/Build
> @@ -1,3 +1,4 @@
>  hv_kvp_daemon-y += hv_kvp_daemon.o
>  hv_vss_daemon-y += hv_vss_daemon.o
> -hv_fcopy_daemon-y += hv_fcopy_daemon.o
> +hv_fcopy_uio_daemon-y += hv_fcopy_uio_daemon.o hv_fcopy_uio_daemon-y
> +=
> +vmbus_bufring.o
> diff --git a/tools/hv/Makefile b/tools/hv/Makefile index
> fe770e679ae8..944180cf916e 100644
> --- a/tools/hv/Makefile
> +++ b/tools/hv/Makefile

I'm not sure if vmbus_bufring will compile on ARM.
If it's not supported, can use some flags in Makefile to not build this.