From: Shuah Khan <skhan@linuxfoundation.org>
To: Zongmin Zhou <min_halo@163.com>
Cc: valentina.manea.m@gmail.com, shuah@kernel.org, i@zenithal.me,
gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org,
Zongmin Zhou <zhouzongmin@kylinos.cn>,
Shuah Khan <skhan@linuxfoundation.org>
Subject: Re: [PATCH] usbip: Fix the error limitation on max_hw_sectors for usbip device
Date: Thu, 27 Feb 2025 15:23:25 -0700 [thread overview]
Message-ID: <247c7e15-bbff-427f-8315-ca463f8b933b@linuxfoundation.org> (raw)
In-Reply-To: <5a41d6c3.8c78.195371996e0.Coremail.min_halo@163.com>
On 2/24/25 01:36, Zongmin Zhou wrote:
> Dear Shuah,
>
>
> Yes，the usbip server get the real USB controller message send to usbip client vhci-hcd，
>
> must have to changethe API between the kernel and user-space.
>
> The easiest way is to simply set vhci-hcd dma mask to 64 by default,
>
> but not all USB controllers support 64bit，That doesn't look good？
This is an expetnsive change to fix the problem. In addition this change
is unnecessary for non-storage devices where USB over IP is used.
You mentioned this happens only in swiotlb cases? Can you explain the
configuration on host and client side.
I would like to explore fixes that are simpler than what is proposed
in this patch.
thanks,
-- Shuah
next prev parent reply other threads:[~2025-02-27 22:23 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-19 9:25 [PATCH] usbip: Fix the error limitation on max_hw_sectors for usbip device Zongmin Zhou
2025-02-21 16:37 ` Shuah Khan
[not found] ` <5a41d6c3.8c78.195371996e0.Coremail.min_halo@163.com>
2025-02-27 22:23 ` Shuah Khan [this message]
[not found] ` <4d4035bf.26b9.19556dcc23d.Coremail.min_halo@163.com>
2025-03-04 19:45 ` Shuah Khan
[not found] ` <6d47fef6.9eef.19565c308e5.Coremail.min_halo@163.com>
2025-03-10 16:49 ` Shuah Khan
2025-03-13 10:02 ` Zongmin Zhou
2025-03-28 21:14 ` Shuah Khan
2025-04-02 8:34 ` Zongmin Zhou
2025-04-08 22:54 ` Shuah Khan
2025-04-22 6:34 ` [PATCH] usbip: set the dma mask to 64bit default for vhci-driver Zongmin Zhou
2025-04-22 6:40 ` Greg KH
2025-04-22 7:24 ` Christoph Hellwig
2025-04-25 8:08 ` Zongmin Zhou
2025-04-25 8:28 ` Greg KH
2025-04-28 9:51 ` Zongmin Zhou
2025-04-28 10:04 ` Greg KH
2025-04-28 23:07 ` Shuah Khan
2025-04-30 5:24 ` Zongmin Zhou
2025-04-30 7:31 ` Greg KH
2025-04-23 1:02 ` kernel test robot
2025-04-23 7:50 ` kernel test robot
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