Differential D56599
arm64: VM/PMAP changes for CCA guest support Authored by sarah.walker2_arm.com on Apr 23 2026, 10:30 AM. Project Tags None Referenced Files
Details When in a realm:
Sponsored by: Arm Ltd
Diff Detail
Event TimelineComment Actions I recently updated my Microsoft Dev Kit, and because of this change I'm seeing: bus_dmamem_alloc failed to align memory properly. The warning stems from an allocation by the nvme driver: KDB: stack backtrace: db_trace_self() at db_trace_self db_trace_self_wrapper() at db_trace_self_wrapper+0x44 bounce_bus_dmamem_alloc() at bounce_bus_dmamem_alloc+0x258 nvme_ctrlr_start() at nvme_ctrlr_start+0xbc8 nvme_ctrlr_start_config_hook() at nvme_ctrlr_start_config_hook+0x5ec run_interrupt_driven_config_hooks() at run_interrupt_driven_config_hooks+0x94 boot_run_interrupt_driven_config_hooks() at boot_run_interrupt_driven_config_hooks+0x30 mi_startup() at mi_startup+0x1ec virtdone() at virtdone+0x70 An added printf reports: vaddr: 0xffffa000847d3f40, paddr: 1047d3f40, alignment: 1000 In this case, the misalignment appears to be harmless because page size alignment isn't actually needed. |