[DragonFlyBSD - Bug #3310] NVMM+QEMU fail to boot with UEFI: Mem Assist Failed [gpa=0xfffffff0]

[bugtracker-admin at leaf.dragonflybsd.org]

Issue #3310 has been updated by marietto.

File qemu-system-x86.7z added

1) Is there any specific reason why you need UEFI?

Yes,because today every modern hypervisor uses UEFI and not BIOS anymore. In addition,I'm trying to start a collaboration to implement the passthrough. I'm not interested in using a hypervisor that uses the old BIOS bootloader.

2) Also, what's that "impish cuda" image? Some custom linux?

it is only a linux VM (ubuntu impish + cuda 470) that I've previously created for bhyve. I've also tried with windows 11 (also in this case it is a vm created for bhyve) and it gave the same error message.

4) I tried another experiment. I've created a fresh new img file with the command :

qemu-img create -f raw jammy.img 200G

and then I've launched the vm with these parameters :

qemu-system-x86_64 \
-machine type=q35,accel=nvmm \
-smp cpus=4 -m 8G \
-drive if=pflash,format=raw,readonly=on,file=/usr/local/share/uefi-edk2-qemu/QEMU_UEFI_CODE-x86_64.fd \
-drive if=pflash,format=raw,file=/usr/local/share/uefi-edk2-qemu/QEMU_UEFI_VARS-x86_64.fd \
-drive id=cdrom,if=none,media=cdrom,file="ubuntu-22.04-desktop-amd64.iso" \
#-drive file=ubuntu-22.04-desktop-amd64.iso,media=cdrom,id=cdrom \
-drive file=/mnt/da16s1d/home/marietto/Desktop/VMS/jammy.img,if=none,id=disk0 \
-device virtio-blk-pci,drive=disk0 \
-netdev user,id=net0,hostfwd=tcp:127.0.0.1:6022-:22 \
-device virtio-net-pci,netdev=net0 \
-object rng-random,id=rng0,filename=/dev/urandom \
-device virtio-rng-pci,rng=rng0 \
-display curses \
-vga qxl \
-spice addr=127.0.0.1,port=5900,ipv4=on,disable-ticketing=on,seamless-migration=on

the error messages are :

root at marietto:/mnt/da16s1d/home/marietto/Desktop/VMS # ./vm2.sh

NetBSD Virtual Machine Monitor accelerator is operational
libGL error: MESA-LOADER: failed to open iris: Cannot open "/usr/local/lib/dri/iris_dri.so" (search paths /usr/local/lib/dri, suffix _dri)
libGL error: failed to load driver: iris
qemu-system-x86_64: NVMM: Mem Assist Failed [gpa=0xfffffff0]
qemu-system-x86_64: NVMM: Failed to execute a VCPU.

Someone wants to debug the core file produced by the bug ? I've attached it.

----------------------------------------
Bug #3310: NVMM+QEMU fail to boot with UEFI: Mem Assist Failed [gpa=0xfffffff0]
http://bugs.dragonflybsd.org/issues/3310#change-14394

* Author: liweitianux
* Status: In Progress
* Priority: Normal
* Category: nvmm
* Target version: 6.4
* Start date: 2022-01-09
----------------------------------------
NVMM+QEMU fail to boot with UEFI, for example:

<pre>
% qemu-system-x86_64 \
      -boot menu=on -display sdl -accel nvmm \
      -drive file=OVMF_CODE.fd,if=pflash,format=raw,readonly=on \
      -drive file=OVMF_VARS.fd,if=pflash,format=raw
NetBSD Virtual Machine Monitor accelerator is operational
qemu-system-x86_64: NVMM: Mem Assist Failed [gpa=0xfffff000]
qemu-system-x86_64: NVMM: Failed to execute a VCPU.
</pre>

The UEFI firmware can be obtained by installing the @uefi-edk2-qemu-x86_64@ package
or by downloading from: https://leaf.dragonflybsd.org/~aly/uefi/

First reported by Mario Marietto and confirmed by me, see:
https://lists.dragonflybsd.org/pipermail/users/2022-January/404898.html

---Files--------------------------------
qemu-system-x86.7z (3.5 MB)


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