NVMM + Qemu UEFI: Mem Assist Failed [gpa=0xfffffff0]

Aaron LI aly at aaronly.me
Sat Jan 1 07:50:09 PST 2022


> On Jan 1, 2022, at 23:39, Aaron LI <aly at aaronly.me> wrote:
> 
> 
> Hmm, interesting…
> 
> Now I suspect it’s UEFI related. Frankly, I never tried this case. And I’m planning to try it out recently. I’ll find time to give it a try

Well, I reproduced the error and confirm it’s caused by UEFI boot. Will try to investigate and hopefully fix it …

Aaron

> Do you have any special needs to use UEFI? Otherwise, just use the default BIOS boot and it should work. Let me know whether it works :)
> 
> Cheers 
> Aaron 
> 
>>> On Jan 1, 2022, at 22:43, Mario Marietto <marietto2008 at gmail.com> wrote:
>>> 
>> 
>> I'm so sorry,but it does not work even with this qemu version :
>> 
>> pkg install qemu
>> pkg info qemu
>> 
>> qemu-6.0.0_3
>> Name           : qemu
>> Version        : 6.0.0_3
>> Installed on   : Sat Jan  1 15:19:36 2022 CET
>> Origin         : emulators/qemu60
>> Architecture   : dragonfly:6.2:x86:64
>> Prefix         : /usr/local
>> Categories     : emulators
>> Licenses       : BSD2CLAUSE, MIT, GPLv2, LGPL21
>> Maintainer     : aly at aaronly.me
>> WWW            : https://www.qemu.org/
>> Comment        : Generic and open source machine emulator and virtualizer
>> Options        :
>>         CAPSTONE       : off
>>         CURL           : on                                       VGA Blank mode
>>         DEBUG          : off
>>         DOCS           : on
>>         GNUTLS         : on
>>         GTK3           : off
>>         ISCSI          : off
>>         JPEG           : on
>>         NFS            : on
>>         NLS            : on
>>         OPENGL         : on
>>         PNG            : on
>>         SAMBA          : off
>>         SASL           : on
>>         SPICE          : on
>>         USBREDIR       : on
>>         VDE            : on
>>         X11            : on
>> 
>> this is the vm that I tried to run :
>> 
>> 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 file=/mnt/dragonfly-ufs/bhyve/impish-cuda-11-4-nvidia-470.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
>> 
>> and this is the error that I get :
>> 
>> qemu-system-x86_64: NVMM: Mem Assist Failed [gpa=0xfffffff0]
>> qemu-system-x86_64: NVMM: Failed to execute a VCPU.
>> Abort trap (core dumped)
>> VGA BLANK MODE
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