From: Naman Jain <namjain@linux.microsoft.com>
To: Markus Elfring <Markus.Elfring@web.de>,
Roman Kisel <romank@linux.microsoft.com>,
Saurabh Sengar <ssengar@linux.microsoft.com>,
linux-hyperv@vger.kernel.org, Dexuan Cui <decui@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Wei Liu <wei.liu@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Alok Tiwari <alok.a.tiwari@oracle.com>,
Anirudh Rayabharam <anrayabh@linux.microsoft.com>,
Nuno Das Neves <nunodasneves@linux.microsoft.com>,
Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Subject: Re: [PATCH v5 2/2] Drivers: hv: Introduce mshv_vtl driver
Date: Tue, 22 Jul 2025 14:46:43 +0530 [thread overview]
Message-ID: <cf2ec1ca-c65b-4e32-8aaf-75b77d294092@linux.microsoft.com> (raw)
In-Reply-To: <68120ea5-d3ba-4077-a605-50a0b5188761@web.de>
On 7/20/2025 12:00 AM, Markus Elfring wrote:
> …
>> +++ b/drivers/hv/mshv_vtl_main.c
>> @@ -0,0 +1,1783 @@
> …
>> +static int mshv_vtl_sint_ioctl_set_eventfd(struct mshv_vtl_set_eventfd __user *arg)
>> +{
> …
>> + mutex_lock(&flag_lock);
>> + old_eventfd = flag_eventfds[set_eventfd.flag];
>> + WRITE_ONCE(flag_eventfds[set_eventfd.flag], eventfd);
>> + mutex_unlock(&flag_lock);
> …
>
> Under which circumstances would you become interested to apply a statement
> like “guard(mutex)(&flag_lock);”?
> https://elixir.bootlin.com/linux/v6.16-rc6/source/include/linux/mutex.h#L225
>
> Regards,
> Markus
I didn't know about it, TBH. I will use it in this driver in all places.
I have tested the same in my setup.
Thanks.
Regards,
Naman
prev parent reply other threads:[~2025-07-22 9:16 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-11 7:27 [PATCH v5 0/2] Drivers: hv: Introduce new driver - mshv_vtl Naman Jain
2025-06-11 7:27 ` [PATCH v5 1/2] Drivers: hv: Export some symbols for mshv_vtl Naman Jain
2025-06-11 7:27 ` [PATCH v5 2/2] Drivers: hv: Introduce mshv_vtl driver Naman Jain
2025-06-11 16:46 ` Nuno Das Neves
2025-06-11 18:00 ` Easwar Hariharan
2025-07-09 17:19 ` Michael Kelley
2025-07-10 9:01 ` Naman Jain
2025-07-17 16:21 ` Nuno Das Neves
2025-07-18 4:36 ` Naman Jain
2025-07-18 15:07 ` Michael Kelley
2025-07-22 11:09 ` Naman Jain
2025-07-22 17:09 ` Michael Kelley
2025-07-23 9:58 ` Naman Jain
2025-07-23 14:13 ` Michael Kelley
2025-07-19 18:30 ` Markus Elfring
2025-07-22 9:16 ` Naman Jain [this message]
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