linux-kernel - Re: [Patch v3] uio_hv_generic: Set event for all channels on the device

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Message-ID: <2025032533-sassy-blinker-85de@gregkh>
Date: Tue, 25 Mar 2025 12:39:54 -0400
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Wei Liu <wei.liu@...nel.org>
Cc: longli@...uxonhyperv.com, "K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Dexuan Cui <decui@...rosoft.com>, linux-hyperv@...r.kernel.org,
	linux-kernel@...r.kernel.org, Long Li <longli@...rosoft.com>
Subject: Re: [Patch v3] uio_hv_generic: Set event for all channels on the
 device

On Tue, Mar 25, 2025 at 04:10:59PM +0000, Wei Liu wrote:
> On Mon, Mar 10, 2025 at 03:12:01PM -0700, longli@...uxonhyperv.com wrote:
> > From: Long Li <longli@...rosoft.com>
> > 
> > Hyper-V may offer a non latency sensitive device with subchannels without
> > monitor bit enabled. The decision is entirely on the Hyper-V host not
> > configurable within guest.
> > 
> > When a device has subchannels, also signal events for the subchannel
> > if its monitor bit is disabled.
> > 
> > This patch also removes the memory barrier when monitor bit is enabled
> > as it is not necessary. The memory barrier is only needed between
> > setting up interrupt mask and calling vmbus_set_event() when monitor
> > bit is disabled.
> > 
> > Signed-off-by: Long Li <longli@...rosoft.com>
> 
> Greg, are you going to take this patch?
> 
> I can take it if you want.

It's the merge window right now, neither of us should be taking it.  Let
me look into it after -rc1 is out.

thanks,

greg k-h