On Tue, Feb 28, 2023 at 12:50:39PM -0500, Robbie Harwood wrote: > 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>
Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com> Thank you for doing this work! Daniel _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
