Intel IGD passthrough working intermittently

2024-10-02 Thread Marco
First of all, I'm not really sure where the problem might be, whether libvirt itself, qemu or some other component; so I'm writing here to begin the discussion, but please direct me to a more appropriate place if needed. I have a machine with an integrated Intel GPU: 00:02.0 VGA compatible contro

Re: Intel IGD passthrough working intermittently

2024-10-02 Thread Marco
On Wed, Oct 2, 2024 at 2:30 PM Corvin Köhne wrote: > > First of all, you should make sure to pass the correct gms value to the > guest. I've already seen issues when passing the wrong value to guests. > That's why I've recently send a patch to qemu to always reuse the host > value [1]. Ok thanks,

Re: Intel IGD passthrough working intermittently

2024-10-02 Thread Marco
On Wed, Oct 2, 2024 at 3:39 PM Corvin Köhne wrote: > > > Ok thanks, I seem to understand I should use the same value that the > > host uses, but how do I figure out that value? > > > > It's contained in bits 15:8 of PCI register 0x50. So, just take a look > into lspci -xxx. I'm not really familia

Black screen with Ubuntu guest in Windows host

2022-01-03 Thread marco restelli
=ubuntu.qcow2 Both hosts use version QEMU emulator version 6.2.0 Any idea how to solve/debug the problem? Thanks, Marco

Re: Black screen with Ubuntu guest in Windows host

2022-01-04 Thread marco restelli
ing on the (same) Windows host. So, essentially the same behaviour observed directing the graphics to QEMU itself. Marco

qemu and raspberrypi

2022-05-10 Thread Marco Capella
English translation by google, original text below. Hello. Guys, my knowledge in English is equal to zero and I also don't know if the correct place to post and here so I apologize in advance ok I have an RPi4 with 4gb of memory, I'm studying shell script to automate commands or install applic

Bypassing the guest page cache with virtio-pmem

2023-12-19 Thread Marco Wurps
che mechanism. Does anyone know if my understanding of what virtio-pmem should do is wrong or is there maybe some guest kernel specific configuration that I need to do in order for this to work? Best Regards, Marco

[Qemu-discuss] Fwd: Why iocl with RNDGETENTCNT does not work?

2017-10-03 Thread Marco Aurélio Lopes Barbosa
xpected. Can someone explain me why this does not work out of the box? Thanks. -- Marco A L Barbosa http://malbarbo.pro.br --

Re: [Qemu-discuss] Fwd: Why iocl with RNDGETENTCNT does not work?

2017-10-05 Thread Marco A L Barbosa
Thanks, I submitted a patch: https://lists.nongnu.org/archive/html/qemu-trivial/2017-10/msg00016.html On Tue, Oct 3, 2017 at 12:30 PM, Peter Maydell wrote: > On 3 October 2017 at 11:50, Marco Aurélio Lopes Barbosa > wrote: > > if (ioctl(fd, RNDGETENTCNT, &entropy) ==