re I merge them into current.
Cheers,
--------
Emile `iMil' Heitor | https://imil.net
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Emile `iMil' Heitor | https://imil.net
heers,
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Emile `iMil' Heitor | https://imil.net
e CPU frequency 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.
--
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Emile `iMil' Heitor | https://imil.net
json
Firecracker must 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
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Emile `iMil' Heitor | https://imil.net
retries with the right size when that was too small.
Got it, makes sense. Thanks for the reply!
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Emile `iMil' Heitor | https://imil.net
slog_setup, "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, NU
ith the right *oldlenp value.
I fail to see where this behavior comes from and I'd like to
understand the logic behind it.
--
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Emile `iMil' Heitor | https://imil.net
the review!
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Emile `iMil' Heitor | https://imil.net
e ifn?def's GENPVH.
Here's the patch: https://imil.net/NetBSD/noxen.patch
Does this look reasonable to you?
--
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Emile `iMil' Heitor | https://imil.net
https://twitter.com/iMilnb/status/1743576957046931647
Feedback appreciated.
Cheers,
--
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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 lik
uld like to 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
nfiguration.
Can we have a review before I do a PR?
Thanks,
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Emile `iMil' Heitor | https://imil.net
/clock.c:startrtclock()
return when mc146818_read() fails? There seem to have nothing but
MC146818 for RTC in x86.
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Emile `iMil' Heitor | https://imil.net
re natural.
Thoughts?
Here's the code:
https://github.com/NetBSD/src/commit/c09440be5aca7e16ce845c3ccbdfb47bac03fb63
--
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Emile `iMil' Heitor | https://imil.net
mu's -kernel flag.
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.
--
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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
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.
--
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Emile `iM
ead, 63 sec, 512 bytes/sect x
61441 sectors
[ 1.0107398] boot device: ld0
--
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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
orted
on Firecracker.
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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
x27;m getting some results but Firecracker uses MMIO v2 and we only have
v1 so there's still quite some work to do.
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Emile `iMil' Heitor | https://imil.net
ation 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'
dvice.
Emile `iMil' Heitor | https://imil.net
modes? I am focusing on making the resulting kernel smaller but this
could be done also.
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Emile `iMil' Heitor | https://imil.net
t
Firecracker. FYI qemu-system-x86_64 also works with the "microvm"
machine type.
Feedback very welcome.
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Emile `iMil' Heitor | https://imil.net
* it is ugly at the moment. I *will* make it
clean, just wanted to share the joy ;)
Cheers,
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Emile `iMil' Heitor | https://imil.net
atch, and sorry for the noise.
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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
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, i
on where to look and 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,
----------
ideas to make it cleaner.
Cheers,
--------
Emile `iMil' Heitor | https://imil.net
vm/firecracker
--------
Emile `iMil' Heitor *
_
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