linux-kernel - Re: [PATCH 1/1] mshv: Use EPOLLIN and EPOLLHUP instead of POLLIN and POLLHUP

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Message-ID: <20260204061624.GE79272@liuwe-devbox-debian-v2.local>
Date: Wed, 4 Feb 2026 06:16:24 +0000
From: Wei Liu <wei.liu@...nel.org>
To: Stanislav Kinsburskii <skinsburskii@...ux.microsoft.com>
Cc: mhklinux@...look.com, kys@...rosoft.com, haiyangz@...rosoft.com,
	wei.liu@...nel.org, decui@...rosoft.com, longli@...rosoft.com,
	linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] mshv: Use EPOLLIN and EPOLLHUP instead of POLLIN and
 POLLHUP

On Tue, Feb 03, 2026 at 07:44:54AM -0800, Stanislav Kinsburskii wrote:
> On Thu, Jan 29, 2026 at 07:51:54AM -0800, mhkelley58@...il.com wrote:
> > From: Michael Kelley <mhklinux@...look.com>
> > 
> > mshv code currently uses the POLLIN and POLLHUP flags. Starting with
> > commit a9a08845e9acb ("vfs: do bulk POLL* -> EPOLL* replacement") the
> > intent is to use the EPOLL* versions throughout the kernel.
> > 
> > The comment at the top of mshv_eventfd.c describes it as being inspired
> > by the KVM implementation, which was changed by the above mentioned
> > commit in 2018 to use EPOLL*. mshv_eventfd.c is much newer than 2018
> > and there's no statement as to why it must use the POLL* versions.
> > So change it to use the EPOLL* versions. This change also resolves
> > a 'sparse' warning.
> > 
> > No functional change, and the generated code is the same.
> > 
> > Reported-by: kernel test robot <lkp@...el.com>
> > Closes: https://lore.kernel.org/oe-kbuild-all/202601220948.MUTO60W4-lkp@intel.com/
> > Signed-off-by: Michael Kelley <mhklinux@...look.com>
> 
> Reviewed-by: Stanislav Kinsburskii <skinsburskii@...ux.microsoft.com>

Applied.