From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: Matthew Wilcox (Oracle) <willy@infradead.org>,
dri-devel@lists.freedesktop.org, linux-hyperv@vger.kernel.org,
linux-fbdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
Michael Kelley <mikelley@microsoft.com>,
wei.liu@kernel.org, Dexuan Cui <decui@microsoft.com>
Subject: [bug report] Commit ccf953d8f3d6 ("fb_defio: Remove custom address_space_operations") breaks Hyper-V FB driver
Date: Fri, 04 Jun 2021 14:25:01 +0200 [thread overview]
Message-ID: <87v96tzujm.fsf@vitty.brq.redhat.com> (raw)
Hi,
Commit ccf953d8f3d6 ("fb_defio: Remove custom address_space_operations")
seems to be breaking Hyper-V framebuffer
(drivers/video/fbdev/hyperv_fb.c) driver for me: Hyper-V guest boots
well and plymouth even works but when I try starting Gnome, virtual
screen just goes black. Reverting the above mentioned commit on top of
5.13-rc4 saves the day. The behavior is 100% reproducible. I'm using
Gen2 guest runing on Hyper-V 2019. It was also reported that Gen1 guests
are equally broken.
Is this something known?
--
Vitaly
next reply other threads:[~2021-06-04 12:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-04 12:25 Vitaly Kuznetsov [this message]
2021-06-04 13:00 ` [bug report] Commit ccf953d8f3d6 ("fb_defio: Remove custom address_space_operations") breaks Hyper-V FB driver Wei Liu
2021-06-04 15:47 ` Vineeth Pillai
2021-06-04 18:16 ` Dexuan Cui
2021-06-04 18:37 ` Dexuan Cui
2021-06-04 18:52 ` Matthew Wilcox
2021-06-04 13:31 ` Matthew Wilcox
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