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From: Pete Wright <pete@nomadlogic.org>
Subject: Custom Qcow2 Images
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Date: Sun, 14 Jul 2019 16:37:36 -0700
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Hey there folks,
I am wondering if anyone has any pointers on creating a custom Qcow2
FreeBSD that is akin in size to nanobsd. I have an environment where we
need to run a single binary and want to keep our disk image as small as
possible. It will run inside a user-mode Qemu process. Reading through
the nanobsd script it seems that it expects a raw disk for installation,
so I do think using the nanobsd script itself well work well. Has
anyone else done something similar? My goal is to have a disk image
that is around 500MB.
Thanks in advance!
-pete
--
Pete Wright
pete@nomadlogic.org
@nomadlogicLA
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Subject: Re: Custom Qcow2 Images
To: freebsd-virtualization@freebsd.org
References: <459c53d0-f00b-6ce3-dfab-de3ddac1c0bb@nomadlogic.org>
From: Allan Jude <allanjude@freebsd.org>
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From: Allan Jude <allanjude@freebsd.org>
To: freebsd-virtualization@freebsd.org
Message-ID: <c818efcd-5338-53dd-7056-e202f5c4c406@freebsd.org>
Subject: Re: Custom Qcow2 Images
References: <459c53d0-f00b-6ce3-dfab-de3ddac1c0bb@nomadlogic.org>
In-Reply-To: <459c53d0-f00b-6ce3-dfab-de3ddac1c0bb@nomadlogic.org>
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On 2019-07-14 19:37, Pete Wright wrote:
> Hey there folks,
> I am wondering if anyone has any pointers on creating a custom Qcow2
> FreeBSD that is akin in size to nanobsd.=C2=A0 I have an environment wh=
ere we
> need to run a single binary and want to keep our disk image as small as=
> possible.=C2=A0 It will run inside a user-mode Qemu process.=C2=A0 Read=
ing through
> the nanobsd script it seems that it expects a raw disk for installation=
,
> so I do think using the nanobsd script itself well work well.=C2=A0 Has=
> anyone else done something similar?=C2=A0 My goal is to have a disk ima=
ge
> that is around 500MB.
>=20
> Thanks in advance!
> -pete
>=20
I would expect the answer is `poudriere image` with a src.conf with many
WITHOUT_* knobs to disable things you don't need to get the image down
in size. There is likely a list of such knobs you could borrow from nanob=
sd.
--=20
Allan Jude
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Subject: Re: Custom Qcow2 Images
To: Allan Jude <allanjude@freebsd.org>, freebsd-virtualization@freebsd.org
References: <459c53d0-f00b-6ce3-dfab-de3ddac1c0bb@nomadlogic.org>
<c818efcd-5338-53dd-7056-e202f5c4c406@freebsd.org>
From: Pete Wright <pete@nomadlogic.org>
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Date: Sun, 14 Jul 2019 18:30:56 -0700
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On 7/14/19 4:59 PM, Allan Jude wrote:
> On 2019-07-14 19:37, Pete Wright wrote:
>> Hey there folks,
>> I am wondering if anyone has any pointers on creating a custom Qcow2
>> FreeBSD that is akin in size to nanobsd. I have an environment where we
>> need to run a single binary and want to keep our disk image as small as
>> possible. It will run inside a user-mode Qemu process. Reading through
>> the nanobsd script it seems that it expects a raw disk for installation,
>> so I do think using the nanobsd script itself well work well. Has
>> anyone else done something similar? My goal is to have a disk image
>> that is around 500MB.
>>
>> Thanks in advance!
>> -pete
>>
> I would expect the answer is `poudriere image` with a src.conf with many
> WITHOUT_* knobs to disable things you don't need to get the image down
> in size. There is likely a list of such knobs you could borrow from nanobsd.
>
Thanks Allan - I hadn't thought of using poudriere in this way, I'll
give this a shot tonight!
-p
--
Pete Wright
pete@nomadlogic.org
@nomadlogicLA
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From: Kamil Koczurek <kek@semihalf.com>
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Subject: bhyve fails on arm64 -- unknown exception type
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Hello,
I'm testing bhyve on an arm64 board, and it fails on a basic use case.
Setup:
- board: EspressoBin
- FreeBSD 13.0
(https://github.com/FreeBSD-UPB/freebsd/tree/projects/bhyvearm64-refactor)
Steps to reproduce:
$ kldload vmm
$ cd /boot/kernel
$ bhyveload -k kernel guest
$ bhyve guest
The following error appears almost instantly:
`arm64_handle_world_switch:534 Unknown exception type: 1514243680`
After this, the board stops responding and requires a hard reset.
Debugger doesn't kick in either. It's not completely frozen though: I
can see new kernel messages regarding the attached usb drive.
I believe this might be interesting to people working on bhyve.
Ps. I can collect additional information if needed, feel free to
contact me either here or privately.
Respectfully,
Kamil Koczurek
From owner-freebsd-virtualization@freebsd.org Mon Jul 15 10:41:29 2019
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From: Alexandru Elisei <alexandru.elisei@gmail.com>
Date: Mon, 15 Jul 2019 11:41:16 +0100
Message-ID: <CAB-4s4=h-PXRn83duxna3DY=bJHhmgWnpRB0FMQDPVTjPz0XNw@mail.gmail.com>
Subject: Re: bhyve fails on arm64 -- unknown exception type
To: Kamil Koczurek <kek@semihalf.com>
Cc: freebsd-virtualization@freebsd.org
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Hello,
>From the error message and the symptoms you described, it looks like
something is broken with the world switch code.
Thank you for testing bhyve.
Regards,
Alex
On Mon, Jul 15, 2019 at 11:17 AM Kamil Koczurek <kek@semihalf.com> wrote:
> Hello,
> I'm testing bhyve on an arm64 board, and it fails on a basic use case.
>
> Setup:
> - board: EspressoBin
> - FreeBSD 13.0
> (https://github.com/FreeBSD-UPB/freebsd/tree/projects/bhyvearm64-refactor)
>
> Steps to reproduce:
> $ kldload vmm
> $ cd /boot/kernel
> $ bhyveload -k kernel guest
> $ bhyve guest
>
> The following error appears almost instantly:
> `arm64_handle_world_switch:534 Unknown exception type: 1514243680`
>
> After this, the board stops responding and requires a hard reset.
> Debugger doesn't kick in either. It's not completely frozen though: I
> can see new kernel messages regarding the attached usb drive.
>
> I believe this might be interesting to people working on bhyve.
>
> Ps. I can collect additional information if needed, feel free to
> contact me either here or privately.
>
> Respectfully,
> Kamil Koczurek
> _______________________________________________
> freebsd-virtualization@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization
> To unsubscribe, send any mail to "
> freebsd-virtualization-unsubscribe@freebsd.org"
>
From owner-freebsd-virtualization@freebsd.org Wed Jul 17 12:53:20 2019
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From: Mihai Carabas <mihai.carabas@gmail.com>
Date: Wed, 17 Jul 2019 16:12:22 +0300
Message-ID: <CANg1yUvWCr0YCnYYiogYs1ONdmCY_voo6TV3ViB035_fS+Ji=w@mail.gmail.com>
Subject: Re: bhyve fails on arm64 -- unknown exception type
To: Alexandru Elisei <alexandru.elisei@gmail.com>
Cc: Kamil Koczurek <kek@semihalf.com>, freebsd-virtualization@freebsd.org
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Hello Kamil,
We will try to look into that but probably from September. Now we are
engaged with reviewing save/restore and live migration.
Thank you for testing,
Mihai
On Mon, Jul 15, 2019 at 1:41 PM Alexandru Elisei
<alexandru.elisei@gmail.com> wrote:
>
> Hello,
>
> From the error message and the symptoms you described, it looks like
> something is broken with the world switch code.
>
> Thank you for testing bhyve.
>
> Regards,
> Alex
>
> On Mon, Jul 15, 2019 at 11:17 AM Kamil Koczurek <kek@semihalf.com> wrote:
>
> > Hello,
> > I'm testing bhyve on an arm64 board, and it fails on a basic use case.
> >
> > Setup:
> > - board: EspressoBin
> > - FreeBSD 13.0
> > (https://github.com/FreeBSD-UPB/freebsd/tree/projects/bhyvearm64-refactor)
> >
> > Steps to reproduce:
> > $ kldload vmm
> > $ cd /boot/kernel
> > $ bhyveload -k kernel guest
> > $ bhyve guest
> >
> > The following error appears almost instantly:
> > `arm64_handle_world_switch:534 Unknown exception type: 1514243680`
> >
> > After this, the board stops responding and requires a hard reset.
> > Debugger doesn't kick in either. It's not completely frozen though: I
> > can see new kernel messages regarding the attached usb drive.
> >
> > I believe this might be interesting to people working on bhyve.
> >
> > Ps. I can collect additional information if needed, feel free to
> > contact me either here or privately.
> >
> > Respectfully,
> > Kamil Koczurek
> > _______________________________________________
> > freebsd-virtualization@freebsd.org mailing list
> > https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization
> > To unsubscribe, send any mail to "
> > freebsd-virtualization-unsubscribe@freebsd.org"
> >
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Subject: [Bug 239118] in ESXi: Panic in ether_output_frame
Date: Thu, 18 Jul 2019 19:50:14 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D239118
--- Comment #2 from Juraj Lutter <juraj@lutter.sk> ---
Please! Has anyone had any chance to look at this? Thanks.
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Subject: [Bug 239118] in ESXi: Panic in ether_output_frame
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D239118
--- Comment #3 from Mark Johnston <markj@FreeBSD.org> ---
Created attachment 205876
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D205876&action=
=3Dedit
proposed patch
Based on the line numbers, vmxnet3_isc_txd_credits_update() is being reente=
red.
I think there is a window where vxcr_next is an invalid queue index; if we
take an interrupt during that window, we may reference invalid memory.
Please try the attached patch, which attempts to bandage the problem.
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Subject: [Bug 239118] in ESXi: Panic in ether_output_frame
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D239118
--- Comment #4 from Patrick Kelsey <pkelsey@freebsd.org> ---
(In reply to Mark Johnston from comment #3)
> Created attachment 205876 [details]
> proposed patch
>=20
> Based on the line numbers, vmxnet3_isc_txd_credits_update() is being
> reentered. I think there is a window where vxcr_next is an invalid queue
> index; if we take an interrupt during that window, we may reference inval=
id
> memory.
>=20
> Please try the attached patch, which attempts to bandage the problem.
The problem isn't that vmxnet3_isc_txd_credits_update() needs to be
re-enterable, the problem is that r347221 (merged to stable/12 in r349112)
changed iflib_legacy_setup() in a way that assumes that all iflib drivers
operate their interrupts in combined RXTX mode. The vmx driver is one such
driver that does not. For vmx, this change results in access to the tx sta=
te
from multiple contexts (interrupt and group task context) whereas the tx st=
ate
management is designed to only be accessed from a single context (group task
context).
iflib_legacy_setup() needs to be fixed.
--=20
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You are the assignee for the bug.=
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To: virtualization@FreeBSD.org
Subject: [Bug 239118] in ESXi: Panic in ether_output_frame
Date: Fri, 19 Jul 2019 00:04:02 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D239118
Mark Johnston <markj@FreeBSD.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marius@FreeBSD.org
--- Comment #5 from Mark Johnston <markj@FreeBSD.org> ---
(In reply to Patrick Kelsey from comment #4)
Marius, could you take a look at this?
--=20
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From owner-freebsd-virtualization@freebsd.org Fri Jul 19 02:53:46 2019
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Subject: Re: Custom Qcow2 Images
To: freebsd-virtualization@freebsd.org
References: <459c53d0-f00b-6ce3-dfab-de3ddac1c0bb@nomadlogic.org>
From: Pete Wright <pete@nomadlogic.org>
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Date: Thu, 18 Jul 2019 19:53:42 -0700
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On 7/14/19 4:37 PM, Pete Wright wrote:
> Hey there folks,
> I am wondering if anyone has any pointers on creating a custom Qcow2
> FreeBSD that is akin in size to nanobsd. I have an environment where
> we need to run a single binary and want to keep our disk image as
> small as possible. It will run inside a user-mode Qemu process.Â
> Reading through the nanobsd script it seems that it expects a raw disk
> for installation, so I do think using the nanobsd script itself well
> work well. Has anyone else done something similar? My goal is to
> have a disk image that is around 500MB.
>
> Thanks in advance!
> -pete
>
I wanted to close the loop on this discussion as I think I've found a
workable solution for my use-case. I'm using a three step process:
1) generate a raw disk image using "poudriere image". This phase
references a Jail I've built that has disabled lots of uneeded features
as per the docs here:
https://bsdrp.net/documentation/technical_docs/poudriere
2) next I use mkimg(1) to convert the raw disk image to a bootable qcow2
image that I can boot from Qemu. this results in a disk image that's
about 800MB.
3) the final phase is to use qemu-img to create a compressed qcow2
image. the resulting artifact of that process is a ~325MB Qcow2
diskimage that actually has decent performance (on my SSD backed zfs
filesystem).
I attempted to use poudriere image to generate a usb image directly, and
while that did work well sizing wise i ran into an issue where
insufficient inodes were allocated. I reference what I ran into in this
github issue:
https://github.com/freebsd/poudriere/issues/701
For me this current setup is fine for my purposes, although I'm sure
others can optimize this workflow a bit :)
Also, thanks again Allan and Dave Cottlehuber (who pinged me offlist)
for giving me some hints and pointing me in the right direction!
Cheers,
-pete
--
Pete Wright
pete@nomadlogic.org
@nomadlogicLA
From owner-freebsd-virtualization@freebsd.org Fri Jul 19 10:02:16 2019
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Subject: New video BIOS for bhyve
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Date: Fri, 19 Jul 2019 12:02:14 +0200
From: Henrik Gulbrandsen <henrik@gulbra.net>
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In the last few months, I have been extending the video support in bhyve
to allow booting from live ISO images, which sometimes lack UEFI
loaders.
There was already a video BIOS with dormant support for VGA, but I could
not use that, because the X11 int10 module runs a real-mode x86 emulator
that aborts when it tries to enter the C code running in protected mode.
Instead, I added support for PCI Expansion ROMs to bhyve and wrote a new
SVGA video BIOS from scratch in 8086 assembly code. The current features
include VGA modes 3 and 12h, 24-bit and 32-bit VESA modes from 640x480
to
1920x1200, and enough BIOS functions to boot a typical Linux desktop.
At this point, I think it's good enough for a preliminary release, so if
you are interested, you will find all patch files at the following URL:
https://www.gulbra.net/freebsd-bhyve/
My apologies for the 15-year-old web layout, which will probably break
horribly on modern smartphones. Also, I hope I have not duplicated the
work of someone else. I didn't want to announce this before it worked.
/Henrik
From owner-freebsd-virtualization@freebsd.org Fri Jul 19 10:43:55 2019
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Date: Fri, 19 Jul 2019 12:37:08 +0200
From: Emmanuel Vadot <manu@bidouilliste.com>
To: Pete Wright <pete@nomadlogic.org>
Cc: freebsd-virtualization@freebsd.org
Subject: Re: Custom Qcow2 Images
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Hi Pete,
On Thu, 18 Jul 2019 19:53:42 -0700
Pete Wright <pete@nomadlogic.org> wrote:
>=20
> On 7/14/19 4:37 PM, Pete Wright wrote:
> > Hey there folks,
> > I am wondering if anyone has any pointers on creating a custom Qcow2=20
> > FreeBSD that is akin in size to nanobsd.=A0 I have an environment where=
=20
> > we need to run a single binary and want to keep our disk image as=20
> > small as possible.=A0 It will run inside a user-mode Qemu process.=A0=20
> > Reading through the nanobsd script it seems that it expects a raw disk=
=20
> > for installation, so I do think using the nanobsd script itself well=20
> > work well.=A0 Has anyone else done something similar?=A0 My goal is to=
=20
> > have a disk image that is around 500MB.
> >
> > Thanks in advance!
> > -pete
> >
>=20
>=20
> I wanted to close the loop on this discussion as I think I've found a=20
> workable solution for my use-case.=A0 I'm using a three step process:
>=20
> 1) generate a raw disk image using "poudriere image".=A0 This phase=20
> references a Jail I've built that has disabled lots of uneeded features=20
> as per the docs here:
> https://bsdrp.net/documentation/technical_docs/poudriere
>=20
> 2) next I use mkimg(1) to convert the raw disk image to a bootable qcow2=
=20
> image that I can boot from Qemu.=A0 this results in a disk image that's=20
> about 800MB.
>=20
> 3) the final phase is to use qemu-img to create a compressed qcow2=20
> image.=A0 the resulting artifact of that process is a ~325MB Qcow2=20
> diskimage that actually has decent performance (on my SSD backed zfs=20
> filesystem).
>=20
> I attempted to use poudriere image to generate a usb image directly, and=
=20
> while that did work well sizing wise i ran into an issue where=20
> insufficient inodes were allocated.=A0 I reference what I ran into in thi=
s=20
> github issue:
> https://github.com/freebsd/poudriere/issues/701
This is a problem with makefs, I don't recall the details but even
when using -f to ensure that a minimum of free inode were present I had
problems, I'll try to find my notes on this.
Using rawdisk this uses mdconfig/newfs so you don't have inodes
problems.
> For me this current setup is fine for my purposes, although I'm sure=20
> others can optimize this workflow a bit :)
I won't be against you adding qcow2 support in poudriere image :)
> Also, thanks again Allan and Dave Cottlehuber (who pinged me offlist)=20
> for giving me some hints and pointing me in the right direction!
>=20
> Cheers,
> -pete
>=20
> --=20
> Pete Wright
> pete@nomadlogic.org
> @nomadlogicLA
>=20
> _______________________________________________
> freebsd-virtualization@freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization
> To unsubscribe, send any mail to "freebsd-virtualization-unsubscribe@free=
bsd.org"
--=20
Emmanuel Vadot <manu@bidouilliste.com> <manu@freebsd.org>
From owner-freebsd-virtualization@freebsd.org Fri Jul 19 12:48:33 2019
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To: Henrik Gulbrandsen <henrik@gulbra.net>,
FreeBSD Virtualization <freebsd-virtualization@freebsd.org>
From: Robert Crowston <crowston@protonmail.com>
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Subject: Re: New video BIOS for bhyve
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From owner-freebsd-virtualization@freebsd.org Fri Jul 19 14:17:15 2019
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Subject: Re: Custom Qcow2 Images
To: Emmanuel Vadot <manu@bidouilliste.com>
Cc: freebsd-virtualization@freebsd.org
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From: Pete Wright <pete@nomadlogic.org>
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Date: Fri, 19 Jul 2019 07:17:12 -0700
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On 7/19/19 3:37 AM, Emmanuel Vadot wrote:
>
>> For me this current setup is fine for my purposes, although I'm sure
>> others can optimize this workflow a bit :)
> I won't be against you adding qcow2 support in poudriere image :)
nice - i'll take a swing at this this weekend hopefully :)
-pete
--
Pete Wright
pete@nomadlogic.org
310.309.9298
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Subject: Re: New video BIOS for bhyve
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On 7/19/2019 5:02 AM, Henrik Gulbrandsen wrote:
> In the last few months, I have been extending the video support in bhyve
> to allow booting from live ISO images, which sometimes lack UEFI loaders.
Hi Henrick,
Wow. This looks impressive. Thanks for taking it on :)
> There was already a video BIOS with dormant support for VGA, but I could
> not use that, because the X11 int10 module runs a real-mode x86 emulator
> that aborts when it tries to enter the C code running in protected mode.
I wonder if this could be related to your CPU not supporting
unrestricted guest mode? I know it's required for some bhyve functionality.
>
> Instead, I added support for PCI Expansion ROMs to bhyve and wrote a new
> SVGA video BIOS from scratch in 8086 assembly code. The current features
> include VGA modes 3 and 12h, 24-bit and 32-bit VESA modes from 640x480 to
> 1920x1200, and enough BIOS functions to boot a typical Linux desktop.
>
> At this point, I think it's good enough for a preliminary release, so if
> you are interested, you will find all patch files at the following URL:
>
> Â Â Â https://www.gulbra.net/freebsd-bhyve/
>
> My apologies for the 15-year-old web layout, which will probably break
> horribly on modern smartphones. Also, I hope I have not duplicated the
> work of someone else. I didn't want to announce this before it worked.
>
Are you maintaining your changes in a public repo somewhere? If so, it
would be great if you could share the location.
Thanks,
-Matthew
From owner-freebsd-virtualization@freebsd.org Fri Jul 19 15:41:05 2019
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Subject: Re: New video BIOS for bhyve
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From: Henrik Gulbrandsen <henrik@gulbra.net>
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On 2019-07-19 16:43, Matthew Grooms wrote:
>> There was already a video BIOS with dormant support for VGA, but I
>> could
>> not use that, because the X11 int10 module runs a real-mode x86
>> emulator
>> that aborts when it tries to enter the C code running in protected
>> mode.
>
> I wonder if this could be related to your CPU not supporting
> unrestricted guest mode? I know it's required for some bhyve
> functionality.
No, the int10 module runs the BIOS code on a software CPU.
Protected mode is simply not implemented.
> Are you maintaining your changes in a public repo somewhere?
Not at the moment. Without distributed version control, I figured the
version history would be lost anyway, so I simply took daily snapshots
of the main BIOS file. The remaining changes are mostly small things.
/Henrik
From owner-freebsd-virtualization@freebsd.org Fri Jul 19 16:02:43 2019
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Subject: Re: New video BIOS for bhyve
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On 7/19/2019 10:41 AM, Henrik Gulbrandsen wrote:
> On 2019-07-19 16:43, Matthew Grooms wrote:
>>> There was already a video BIOS with dormant support for VGA, but I
>>> could
>>> not use that, because the X11 int10 module runs a real-mode x86
>>> emulator
>>> that aborts when it tries to enter the C code running in protected
>>> mode.
>>
>> I wonder if this could be related to your CPU not supporting
>> unrestricted guest mode? I know it's required for some bhyve
>> functionality.
>
> No, the int10 module runs the BIOS code on a software CPU.
> Protected mode is simply not implemented.
>
I see. Well, I assume the code you reference worked without aborting at
some point. There is a related SOC idea project mentioned here ...
https://wiki.freebsd.org/SummerOfCodeIdeas#VGA_emulation_improvements_for_bhyve
<https://wiki.freebsd.org/SummerOfCodeIdeas>
-Matthew
From owner-freebsd-virtualization@freebsd.org Sat Jul 20 13:14:14 2019
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Subject: [Bug 239341] HDA support doesn't work for me
Date: Sat, 20 Jul 2019 13:14:13 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D239341
Bug ID: 239341
Summary: HDA support doesn't work for me
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: bhyve
Assignee: virtualization@FreeBSD.org
Reporter: shamaz.mazum@gmail.com
Created attachment 205930
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D205930&action=
=3Dedit
Patch that fixes the problem for me
Hello. I am running FreeBSD 12.0-RELEASE and want to try hda (audio) suppor=
t,
which was added to CURRENT recently (base r349335). So I have cherry-picked
that commit (I use git mirror on github) and rebuilt bhyve.
When I add HDA device, bhyve aborts on assertion:
root@vonbraun:~ # bhyve -c 1 -m 2G -w -H -s 0,hostbridge -s
4,ahci-cd,/home/vasily/Fedora-Workstation-Live-x86_64-30-1.2.iso -s
6,hda,play=3D/dev/dsp -s 29,fbuf,tcp=3D127.0.0.1:5900,w=3D1920,h=3D1080 -s
30,xhci,tablet -s 31,lpc -l com1,stdio -l bootrom,BHYVE_UEFI.fd fedora
(Fedora is booting. Some messages skipped.)
Assertion failed: (!err), function hda_set_sdctl, file
/usr/src/usr.sbin/bhyve/pci_hda.c, line 1072.
Here are the last lines is bhyve_hda.log:
hda_set_sdctl-1063: stream_ind: 0x4 old: 0x50001c value: 0x50001e
hda_stream_start-677: stream: 0x4 bdl_cnt: 0x3 bdl_paddr: 0x773c5000
hda_stream_start-706: Fail to get the guest virtual address
So I have examined pci_hda.c and discovered that bdle pointer in
hda_stream_start function is shifted by 4 bytes from actual position of that
structure in memory. I cannot explain it, but the following patch fixes the
problem. Maybe it's because I did not rebuild the whole system, but maybe i=
t's
a bug in bhyve. Please tell me is HDA support work on your machine.
--=20
You are receiving this mail because:
You are the assignee for the bug.=
From owner-freebsd-virtualization@freebsd.org Sat Jul 20 17:38:24 2019
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Subject: [Bug 239341] HDA support doesn't work for me
Date: Sat, 20 Jul 2019 17:38:23 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D239341
--- Comment #1 from shamaz.mazum@gmail.com ---
Unfortunately, this quick&dirty fix works only for Fedora as a guest. And l=
et
me clarify myself a bit about that 4 byte shift.
I've added some additional debug code into hda_stream_start
diff --git a/usr.sbin/bhyve/pci_hda.c b/usr.sbin/bhyve/pci_hda.c
index 99f8aec31c6..9d19e2ec504 100644
--- a/usr.sbin/bhyve/pci_hda.c
+++ b/usr.sbin/bhyve/pci_hda.c
@@ -678,6 +678,20 @@ hda_stream_start(struct hda_softc *sc, uint8_t stream_=
ind)
st->bdl_cnt =3D bdl_cnt;
+ /* bdl_vaddr -=3D 4; */
+
+ bdle =3D (struct hda_bdle *)bdl_vaddr;
+ for (i =3D 0; i < bdl_cnt; i++, bdle++) {
+ bdle_sz =3D bdle->len;
+ assert(!(bdle_sz % HDA_DMA_ACCESS_LEN));
+
+ bdle_addrl =3D bdle->addrl;
+ bdle_addrh =3D bdle->addrh;
+
+ bdle_paddr =3D bdle_addrl | (bdle_addrh << 32);
+ DPRINTF("paddr: 0x%lx, len: 0x%x\n", bdle_paddr, bdle_sz);
+ }
+
bdle =3D (struct hda_bdle *)bdl_vaddr;
for (i =3D 0; i < bdl_cnt; i++, bdle++) {
bdle_sz =3D bdle->len;
This is what I get in bhyve_hda.log when booting Fedora.
hda_stream_start-677: stream: 0x4 bdl_cnt: 0x2 bdl_paddr: 0x75a09000
hda_stream_start-692: paddr: 0x79f0000000000000, len: 0x0
hda_stream_start-692: paddr: 0x79f2b11000000000, len: 0x0
hda_stream_start-706: Fail to get the guest virtual address
I have gussed that bdl_vaddr is incorrect and bdle->addrh actualy contains
bdle->addrl, and bdle->ioc is actually bdle->len. So I subtracted 4 from
bdl_vaddr and got sound worked. But, unfortunatelly, it works only with Fed=
ora
guest. Other guests give no sound output or noise.
Waiting reply from users of CURRENT. Do you have the same trouble?
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