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Date:      Mon, 15 Mar 2021 04:57:21 +0000
From:      bugzilla-noreply@freebsd.org
To:        virtualization@FreeBSD.org
Subject:   [Bug 222996] FreeBSD 11.1-12 on Hyper-V with PCI Express Pass Through
Message-ID:  <bug-222996-27103-QlZxHTHBhS@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-222996-27103@https.bugs.freebsd.org/bugzilla/>
References:  <bug-222996-27103@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222996

--- Comment #56 from commit-hook@FreeBSD.org ---
A commit in branch stable/12 references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=3De801c980e253d3f4087ef6d6b8fd382ae=
d68d51c

commit e801c980e253d3f4087ef6d6b8fd382aed68d51c
Author:     Wei Hu <whu@FreeBSD.org>
AuthorDate: 2020-07-30 07:26:11 +0000
Commit:     Wei Hu <whu@FreeBSD.org>
CommitDate: 2021-03-15 04:47:18 +0000

    Prevent framebuffer mmio space from being allocated to other devices on
HyperV.

    On Gen2 VMs, Hyper-V provides mmio space for framebuffer.
    This mmio address range is not useable for other PCI devices.
    Currently only efifb driver is using this range without reserving
    it from system.
    Therefore, vmbus driver reserves it before any other PCI device
    drivers start to request mmio addresses.

    PR:             222996
    Submitted by:   weh@microsoft.com
    Reported by:    dmitry_kuleshov@ukr.net
    Reviewed by:    decui@microsoft.com
    Sponsored by:   Microsoft

    (cherry picked from commit c565776195f2f2b62427af07f6b1a9b7670cbc1f)

 sys/dev/hyperv/vmbus/vmbus.c | 57 ++++++++++++++++++++++++++++++++++++++++=
++++
 1 file changed, 57 insertions(+)

--=20
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