Change RMA size from 512 MB to 768 MB which will result in more memory
at boot time for PowerPC. When vTPM, Secure Boot or FADump are enabled
on PowerPC the 512 MB RMA memory is not sufficient for boot. With this
512 MB RMA, GRUB runs out of memory and fails to boot the machine.
Sometimes even usage of CDROM requires more memory for installation and
along with the options mentioned above exhausts the boot memory which
results in boot failures. Increasing the RMA size will resolves multiple
out of memory issues observed on PowerPC machines.
Failure details (GRUB debug console dump):
kern/ieee1275/init.c:550: mm requested region of size 8513000, flags 1
kern/ieee1275/init.c:563: Cannot satisfy allocation and retain minimum runtime space
kern/ieee1275/init.c:550: mm requested region of size 8513000, flags 0
kern/ieee1275/init.c:563: Cannot satisfy allocation and retain minimum runtime space
kern/file.c:215: Closing `/ppc/ppc64/initrd.img' ...
kern/disk.c:297: Closing `ieee1275//vdevice/v-scsi@30000067/disk@8300000000000000'...
kern/disk.c:311: Closing `ieee1275//vdevice/v-scsi@30000067/disk@8300000000000000' succeeded.
kern/file.c:225: Closing `/ppc/ppc64/initrd.img' failed with 3.
kern/file.c:148: Opening `/ppc/ppc64/initrd.img' succeeded.
error: ../../grub-core/kern/mm.c:552:out of memory.
Signed-off-by: Avnish Chouhan <avnish@linux.ibm.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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