> On 31-Jan-2024, at 17:24, Gerd Hoffmann <kra...@redhat.com> wrote: > > On Wed, Jan 31, 2024 at 08:19:06AM +0530, Ani Sinha wrote: > >> This error exists only with edk2. Seabios currently can boot a linux guest >> fine with 4096 vcpus. Since the lowest common denominator for a working VM >> for >> both edk2 and seabios is 1856 vcpus, bump up the value max_cpus to 1856 for >> q35 >> machines versions 9 and newer. Q35 machines versions 8.2 and older continue >> to support 1024 maximum vcpus as before for compatibility reasons. > > There is a high chance this limit will be gone soon. > > https://github.com/kraxel/edk2/commit/7a03c17f0f4f4a9003d77db2660c8e087604b2f0 > > If 4096 works fine with seabios, I'd suggest to go with 4096 as limit. Any updates on this? Looking at https://issues.redhat.com/browse/RHEL-22202 , seems there is still some outstanding issues?
