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Pre-plug of a memory device, be it an NVDIMM or a PC-DIMM, ensures that the memory slot is available and that addresses don't overlap with existing memory regions. The corresponding DRCs in the LMB and PMEM namespaces are thus necessarily attachable at plug time. Pass &error_abort to spapr_drc_attach() in spapr_add_lmbs() and spapr_add_nvdimm(). This allows to greatly simplify error handling on the plug path. Signed-off-by: Greg Kurz <groug@kaod.org> Message-Id: <20201120234208.683521-3-groug@kaod.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
/*
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* QEMU PowerPC PAPR SCM backend definitions
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*
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* Copyright (c) 2020, IBM Corporation.
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*
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* This code is licensed under the GPL version 2 or later. See the
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* COPYING file in the top-level directory.
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*/
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#ifndef HW_SPAPR_NVDIMM_H
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#define HW_SPAPR_NVDIMM_H
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#include "hw/mem/nvdimm.h"
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#include "hw/ppc/spapr.h"
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/*
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* The nvdimm size should be aligned to SCM block size.
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* The SCM block size should be aligned to SPAPR_MEMORY_BLOCK_SIZE
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* inorder to have SCM regions not to overlap with dimm memory regions.
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* The SCM devices can have variable block sizes. For now, fixing the
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* block size to the minimum value.
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*/
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#define SPAPR_MINIMUM_SCM_BLOCK_SIZE SPAPR_MEMORY_BLOCK_SIZE
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/* Have an explicit check for alignment */
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QEMU_BUILD_BUG_ON(SPAPR_MINIMUM_SCM_BLOCK_SIZE % SPAPR_MEMORY_BLOCK_SIZE);
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int spapr_pmem_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr,
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void *fdt, int *fdt_start_offset, Error **errp);
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void spapr_dt_persistent_memory(SpaprMachineState *spapr, void *fdt);
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bool spapr_nvdimm_validate(HotplugHandler *hotplug_dev, NVDIMMDevice *nvdimm,
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uint64_t size, Error **errp);
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void spapr_add_nvdimm(DeviceState *dev, uint64_t slot);
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#endif
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