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Date:      Wed, 21 Apr 2021 09:09:32 +0000
From:      bugzilla-noreply@freebsd.org
To:        virtualization@FreeBSD.org
Subject:   [Bug 255191] Booting DragonFlyBSD results in Failed to emulate instruction sequence output
Message-ID:  <bug-255191-27103-2MijuRmVGa@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-255191-27103@https.bugs.freebsd.org/bugzilla/>
References:  <bug-255191-27103@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D255191

Aleksandr Fedorov <afedorov@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |afedorov@FreeBSD.org

--- Comment #1 from Aleksandr Fedorov <afedorov@FreeBSD.org> ---
Hello.

It's very strange that you are trying to start DragonFlyBSD using the
bootloader from FreeBSD.

Yes, vmrun.sh, uses bhyveload(8) by default:

>FreeBSD/amd64 User boot lua, Revision 1.2
>Consoles: userboot

You should use -E option to choose UEFI bootloader.

I was able to successfully run it using the UEFI loader. But only if memory=
 >=3D
4GB:

bhyve -H -A -P -c 1 -m 4G -s 0,hostbridge -s 1,virtio-blk,./dfly.img -s
2,ahci-cd,./dfly-x86_64-5.8.3_REL.iso -s 31,lpc -l com1,stdio -l
bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd dfly

If you give the memory less than 4 gigabytes, then a similar error was occu=
rs:

Unhandled memory access to 0x100000000
Failed to emulate instruction sequence [ 813c8f5f4d505f742483c20439d37f ] at
0xffffffff80bebe43

--=20
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