On 11/27/23 09:46, Stefan Berger wrote:
On 11/27/23 07:10, John Paul Adrian Glaubitz wrote:
Hello Stefan!
On Mon, 2023-11-27 at 06:58 -0500, Stefan Berger wrote:
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.
Is this regions_claims memory allocator available on all PowerPC targets
or only on newer POWER machines?
It's not available for PowerMACs but for PowerVM and KVM on Power
systems as well as i386/ieee1275.
Actually, let me clarify. The regions_claims memory allocator is
'available' to all of them but only being used by PowerVM and KVM on
Power. The 2nd paragraph states:
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 and i386.
Stefan
Thanks,
Adrian
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