Description of problem: On a system with multiple "/memory@xxx" nodes, grub misbehaves. For it's memory allocations I observe that it does a "finddevice" call to the client interface for the "/memory" node and then looks for the "available" property in there. This is broken potentially on systems with several such nodes, as OF can return any of the memory nodes. They might not all have an 'available' property and may represent memory outside of the "RMA" which is the only area grub2 should be allowed to access in real mode on some systems. A typical case of that breakage is running under KVM on a 970 where the RMA is only 256M and the rest of memory is represented in a separate node. I have added a hack to SLOF to workaround that problem by forcing any "finddevice" of "/memory" to always return "/memory@0" instead but grub should be made smarter and either: - Request "/memory@0" or - Iterate all memory nodes and pick up the lowest one The latter is only needed if that code is to be used on a system which doesn't have memory starting at 0. At least on powerpc... Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
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