On 1/8/24 23:05, Manuel Bouyer wrote:
in consinit.c you have:
+#if defined(XENPVHVM) || defined(GENPVH)
+#ifndef GENPVH
if (vm_guest == VM_GUEST_XENPVH) {
if (xen_pvh_consinit() != 0)
return;
/* fallback to native console
On Mon, Jan 08, 2024 at 10:03:07PM +0100, Emile 'iMil' Heitor wrote:
>
> This morning I was given the idea of having the possibility to build a
> Xen-free kernel but still GENPVH capable.
> This doesn't impact GENERIC which is still able to boot both Xen and
> GENPVH with the following
This morning I was given the idea of having the possibility to build a
Xen-free kernel but still GENPVH capable.
This doesn't impact GENERIC which is still able to boot both Xen and
GENPVH with the following configuration:
options XENPVHVM
options XEN
hypervisor* at
Here's a final patch https://imil.net/NetBSD/GENPVH.patch
It implements PVH boot from both qemu with the -kernel flag and
Firecracker with Colin Perceval's PVH patches
https://github.com/firecracker-microvm/firecracker/tree/feature/pvh
The patch should apply on current as-is
https
On Mon, Dec 11, 2023 at 10:22:18AM +0100, Emile `iMil' Heitor wrote:
>
> Or would you prefer the same kernel to be able to boot in both XENPVH and
> GENPVH modes? I am focusing on making the resulting kernel smaller but this
> could be done also.
Yes, the same kernel should be able to boot on
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
Firecracker
On Mon, 11 Dec 2023, Manuel Bouyer wrote:
Yes, right now GENERIC can be used on bare-metal, PVHVM and XENPVH.
It would be good to have GENERIC working on GENPVH too.
Fair enough, I'll switch to this path then, thanks for the advice.
On Mon, Dec 11, 2023 at 10:22:18AM +0100, Emile `iMil' Heitor wrote:
>
> Hi Manuel,
>
> On Mon, 11 Dec 2023, Manuel Bouyer wrote:
>
> > #ifndef GENPVH
> > /* get a page for HYPERVISOR_shared_info */
> > addl$PAGE_SIZE, %ebx
> > addl$PGOFSET,%ebx
> > andl
On Mon, Dec 11, 2023 at 10:22:18AM +0100, Emile `iMil' Heitor wrote:
> Or would you prefer the same kernel to be able to boot in both XENPVH and
> GENPVH modes? I am focusing on making the resulting kernel smaller but this
> could be done also.
Can you use a separate entry point and optimize the
Hi Manuel,
On Mon, 11 Dec 2023, Manuel Bouyer wrote:
#ifndef GENPVH
/* get a page for HYPERVISOR_shared_info */
addl$PAGE_SIZE, %ebx
addl$PGOFSET,%ebx
andl$~PGOFSET,%ebx
movl$RELOC(HYPERVISOR_shared_info_pa),%ebp
movl
On Mon, Dec 11, 2023 at 08:26:01AM +0100, Emile `iMil' Heitor wrote:
>
> Here is a clean(er) patch
> https://github.com/NetBSD/src/compare/trunk...NetBSDfr:NetBSD-src:GENPVH
>
> Rationale
>
> Like previously explained, locore.S expects start_info being passed by the
> calling hypervisor on
Here is a clean(er) patch
https://github.com/NetBSD/src/compare/trunk...NetBSDfr:NetBSD-src:GENPVH
Rationale
Like previously explained, locore.S expects start_info being passed by the
calling hypervisor on %ebx to be located at the end of the symbol table.
Qemu and Firecracker don't follow
On Wed, 6 Dec 2023 at 11:37, Emile `iMil' Heitor wrote:
>
> I got it working.
>
> NetBSD/amd64 kernel booting in PVH mode straight from qemu -kernel flag.
> It now needs a lot of cleaninig as it's basically a PoC, but here's a
> WIP patch if anyone's interested in hacking into it.
>
>
I got it working.
NetBSD/amd64 kernel booting in PVH mode straight from qemu -kernel flag.
It now needs a lot of cleaninig as it's basically a PoC, but here's a
WIP patch if anyone's interested in hacking into it.
https://imil.net/NetBSD/qemu-pvh.patch
Let me rephrase: I *know* it is ugly at
On Wed, Nov 29, 2023 at 12:41:53PM +0100, Emile `iMil' Heitor wrote:
> On Wed, 29 Nov 2023, Manuel Bouyer wrote:
>
> > Of course, this is *not* a Xen VM, so no surprise that start_xen32
> > isn't working.
>
> I'm just sharing the progress here, in case someone is interested. If this
> is
On Wed, 29 Nov 2023, Manuel Bouyer wrote:
Of course, this is *not* a Xen VM, so no surprise that start_xen32
isn't working.
I'm just sharing the progress here, in case someone is interested. If this
is annoying, I'll just keep it to myself until I post an -hypothetical-
final patch, and sorry
On Wed, Nov 29, 2023 at 08:22:32AM +0100, Emile `iMil' Heitor wrote:
> 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
> >
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 into
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, in the
On Mon, Nov 13, 2023 at 06:37:01AM +0100, Emile `iMil' Heitor wrote:
>
> I first asked guidance in port-xen@ but the topic doesn't seem to have much
> success, I'll try my chances here.
>
> I am trying to make NetBSD/amd64 boot in PVH mode with qemu, using qemu's
> -kernel flag. The kernel does
I first asked guidance in port-xen@ but the topic doesn't seem to have much
success, I'll try my chances here.
I am trying to make NetBSD/amd64 boot in PVH mode with qemu, using qemu's
-kernel flag. The kernel does start executing thanks to the first step
explained here
21 matches
Mail list logo
