This series of patches converts the PowerPC ieee1275 memory allocator
for kernel and initrd to use the (PowerPC) regions_claim memory allocator
that takes into account memory regions that are not allowed to be used,
such as the gap between 640MB and 768MB as well as memory regions beyond
an address in case an fadump is present. Otherwise those two could be
loaded into restricted memory regions and either cause a crash or
corruption of the fadump.
I adjusted the kernel and initrd load in loader/powerpc/ieee1275 to use the
new memory allocator only on PowerVM and PowerKVM since this code is shared
with other platforms, such as old PowerMACs.
Regards,
Stefan
v3:
- Addressed issues raised by Daniel and added his R-B tags
- Added one comment fix patch and one for debugging output
- Removed len return parameter from request struct since unused
Stefan Berger (10):
kern/ieee1275/init: ppc64: Introduce a request for regions_claim
kern/ieee1275/init: ppc64: Decide by request whether to initialize
region
kern/ieee1275/init: ppc64: Return allocated address using context
kern/ieee1275/init: ppc64: Add support for alignment requirements
kern/ieee1275/init: ppc64: Implement alloc_mem_restricted
kern/ieee1275/cmain: ppc64: Introduce flags to identify Power VM and
KVM
loader/powerpc/ieee1275: Use new allocation function for kernel and
initrd
kern/ieee1275/ieee1275: debug: Display successful memory claims
kern/ieee1275/init: ppc64: Fix a comment
kern/ieee1275/init: ppc64: Display upper_mem_limit for debugging
grub-core/Makefile.am | 1 +
grub-core/kern/ieee1275/cmain.c | 6 +-
grub-core/kern/ieee1275/ieee1275.c | 2 +
grub-core/kern/ieee1275/init.c | 76 +++++++++++++++++++----
grub-core/loader/powerpc/ieee1275/linux.c | 50 ++++++++++++---
include/grub/ieee1275/ieee1275.h | 4 ++
include/grub/powerpc/ieee1275/alloc.h | 38 ++++++++++++
7 files changed, 156 insertions(+), 21 deletions(-)
create mode 100644 include/grub/powerpc/ieee1275/alloc.h
--
2.25.1
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