them into current.
Cheers,
Emile `iMil' Heitor | https://imil.net
----
Emile `iMil' Heitor | https://imil.net
,
--
Emile `iMil' Heitor | https://imil.net
cpuid leaf which can
be used to get CPU frequency from the host instead of doing spending
100ms in DELAY(). Qemu knows hot to expose it via the -cpu host,+invtsc
flag.
--
Emile `iMil' Heitor | https://imil.net
st be killed to terminate the vm in --no-api mode.
For anyone wanting to try this out without compiling, I've uploaded a
kernel and minimal root disk at https://imil.net/NetBSD/netbsd-perf
and https://imil.net/NetBSD/disk.img
Feedback as always very welcome.
Cheers,
[1]: https://www.qemu.org/docs/master/system/i386/microvm.html
--
Emile `iMil' Heitor | https://imil.net
with the right size when that was too small.
Got it, makes sense. Thanks for the reply!
--
Emile `iMil' Heitor | https://imil.net
ot;tslog sysctl")
{
sysctl_createv(NULL, 0, NULL, NULL,
CTLFLAG_PERMANENT|CTLFLAG_READONLY,
CTLTYPE_STRING, "tslog",
SYSCTL_DESCR("Dump recorded event timestamps"),
sysctl_debug_tslog, 0, NULL, 0,
fail to see where this behavior comes from and I'd like to
understand the logic behind it.
--
Emile `iMil' Heitor | https://imil.net
!
--
Emile `iMil' Heitor | https://imil.net
?def's GENPVH.
Here's the patch: https://imil.net/NetBSD/noxen.patch
Does this look reasonable to you?
--
Emile `iMil' Heitor | https://imil.net
ps://twitter.com/iMilnb/status/1743576957046931647
Feedback appreciated.
Cheers,
--
------------
Emile `iMil' Heitor | https://imil.net
On 1/6/24 08:33, Emile 'iMil' Heitor wrote:
To support this, I've attached `virtio*` to a newly created bus,
`cmdlinebus?` which is attached to mainbus in amd64_mainbus.c
I am not entirely sure this is the cleanest way to proceed and
would like to have your feedback.
I like the design
o have your feedback.
The working branch is here:
https://github.com/NetBSDfr/NetBSD-src/tree/mmio_cmdline
Cheers,
--
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Emile `iMil' Heitor | https://imil.net
have a review before I do a PR?
Thanks,
Emile `iMil' Heitor | https://imil.net
mc146818_read() fails? There seem to have nothing but
MC146818 for RTC in x86.
--
Emile `iMil' Heitor | https://imil.net
.
Thoughts?
Here's the code:
https://github.com/NetBSD/src/commit/c09440be5aca7e16ce845c3ccbdfb47bac03fb63
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Emile `iMil' Heitor | https://imil.net
ag.
You'll need at least those two:
virtio* at cmdlinebus?
#virtio* at acpi?
ld* at virtio? # Virtio disk device
As previously said, virtio* at acpi? also works.
--
------------
Emile `iMil' Heitor | https://imil.net
On 12/26/23 11:35, Emile 'iMil' Heitor wrote:
intercepted (or so it seems); I thought the hang, which
actually happens sys/kern/subr_disk.c:disk_read_sectors/biowait,
Found it. Wrong bus_space_write_4() in virtio_mmio_setup_queue(),
100% my fault, sorry for the noise.
IRQ is triggered
ang, which
actually happens sys/kern/subr_disk.c:disk_read_sectors/biowait,
might be related to bad/missing VirtIO device features but
I checked on FreeBSD and the features are correctly computed.
Ideas are welcome.
--
--------
Emile `iM
x
61441 sectors
[ 1.0107398] boot device: ld0
--
------------
Emile `iMil' Heitor | https://imil.net
On 12/20/23 06:55, Emile 'iMil' Heitor wrote:
Well that's the thing, I can't find where does MMIO attaches on FreeBSD,
they have a very simple way of creating the resources:
After a bit of digging, their virtio_mmio device attaches to "nexus0",
which if I understand correct
.
--
Emile `iMil' Heitor | https://imil.net
On 12/16/23 10:25, Emile 'iMil' Heitor wrote:
FYI I'm on it, based on Colin Percival's work here
https://github.com/freebsd/freebsd-src/blob/main/sys/dev/virtio/mmio/virtio_mmio_cmdline.c
I'm getting some results but Firecracker uses MMIO v2 and we only have
v1 so there's still quite some
me results but Firecracker uses MMIO v2 and we only have
v1 so there's still quite some work to do.
--
--------
Emile `iMil' Heitor | https://imil.net
and
uses it to setup the MMIO devices on the VM side the way Firecracker
expects it to; and then attach virtio through that, right?
Was there any more work on this topic?
--
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Emile `iMil' Heitor | https://imil.net
On Mon, 11 Dec 2023, Emile `iMil' Heitor wrote:
We still need to check if we didn't break anything on Xen side and test
Firecracker. FYI qemu-system-x86_64 also works with the "microvm"
machine type.
I am able to boot this patched NetBSD kernel using Colin Percival's PVH-enabled
F
.
Emile `iMil' Heitor | https://imil.net
the resulting kernel smaller but this
could be done also.
Emile `iMil' Heitor | https://imil.net
-x86_64 also works with the "microvm"
machine type.
Feedback very welcome.
--------
Emile `iMil' Heitor | https://imil.net
at the moment. I *will* make it
clean, just wanted to share the joy ;)
Cheers,
Emile `iMil' Heitor | https://imil.net
for the noise.
Emile `iMil' Heitor | https://imil.net
On Thu, 23 Nov 2023, Emile `iMil' Heitor wrote:
It seems we have a similar problem to the second bullet point Colin Percival
noted here
https://www.daemonology.net/blog/2022-10-18-FreeBSD-Firecracker.html
When removing the hvm_start_info address save portion, the sym mapping
doesn't fall
On Mon, 13 Nov 2023, Manuel Bouyer wrote:
On Mon, Nov 13, 2023 at 06:37:01AM +0100, Emile `iMil' Heitor wrote:
The start_xen32 entrypoint is then found, and the kernel start, but falls in
an infinite loop in locore.S when mapping symbols and preloaded modules,
more precisely
d possible reasons of this loop would be greatly
appreciated.
Note that this feature would also allow NetBSD to run on AWS's Firecracker, a
microvm hypervisor used in their Lambda product.
Thanks,
--------
Emile `iMil' Heito
.
Cheers,
Emile `iMil' Heitor | https://imil.net
vm/firecracker
--------
Emile `iMil' Heitor *
_
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