Hello, This is an addition to the series sent from Daniel Axtens (https://lists.gnu.org/archive/html/grub-devel/2022-04/msg00064.html).
Patch 'ieee1275: request memory with ibm,client-architecture-support' implements vectors 1-4 of client-architecture-support negotiation However, during some tests, we found this can be a problem if: - we have more than 64 CPUs - Hardware Management Console (HMC) is configured to minimum of CPUs >64 (for example, min of 200 CPUs) - Grub needs to request memory. If vector 5 is not implemented, Power Hypervisor will consider the default value for vector 5 and 64 will bet set as the maximum number of CPUs supported by the OS, causing the machine to fail to init. Today we support 256 CPUs (max) on Power, so we need to implement vector 5 and set the MAX CPUs bits to this value. The patches 11-15 aren't merged to the grub tree yet, so I'm sending those patches again together with my patch to implement vector 5 on top of them. The patches 11-15 contains the following: Daniel Axtens (4): ieee1275: request memory with ibm,client-architecture-support ieee1275: drop len -= 1 quirk in heap_init ieee1275: support runtime memory claiming [RFC] Add memtool module with memory allocation stress-test Stefan Berger (1): ibmvtpm: Add support for trusted boot using a vTPM 2.0 _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
