Stefan Berger <stef...@linux.ibm.com> writes: > 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. > > Add an IBM/ieee1275 vTPM 2.0 driver that requires the preceeding memory > patches due to the grub's TPM subsystem needing large chunks of memory for > hashing of files such as initrd and kernel. > > Stefan
For the series: Reviewed-by: Robbie Harwood <rharw...@redhat.com> Be well, --Robbie
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