[Xen-ia64-devel] [PATCH][RFC] embed memory map in domain pseudo physical address space

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

Hi all.

Xen/IA64 XEN_DOMCTL_arch_setup hypercall needs flexibilty
to address the following issues.
- xm dump-core. (save/restore would use in near future)
  Now I'm trying to enhance xm dump-core for IA64.
  Such utilities need to know the area where memory is populated.
  Currently domU populates memory dense, but this wouldn't be
  true in future.
  Especially VTi domain builder populate memory spasely so that
  xm dump-core doesn't work for domVTi.
- sparse populated domU for driver domain or other purose(e.g. NUMA)
  The domain builder needs flexibility to populate memory sparsely.

This patch 
- creates memory map as efi runtime data in domain pseudo
  physical space, 
- adds new member, memmap_info_pfn, to struct arch_shared_info
- set memmap_info_pfn to point memory map
- modifies XEN_DOMCTL_arch_setup so that it create EFI memory descriptor
  following the specified memory map.
  It abuses xen_ia64_boot_param to pass memory map.

NOTE: This patch depends the patches which I posted xen-devel,
      but not commited yet.

thnaks.
-- 
yamahata

Attachment: 13852_0c8f4e87a6a6_introduce_memmap_info_t.patch
Description: Text Data

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