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[0/5] populate/unpopulate memory when domain on static

Message ID 20220330093617.3870589-1-Penny.Zheng@arm.com (mailing list archive)
Headers show
Series populate/unpopulate memory when domain on static | expand

Message

Penny Zheng March 30, 2022, 9:36 a.m. UTC 
Today when a domain unpopulates the memory on runtime, they will always
hand the memory over to the heap allocator. And it will be a problem if domain
on static allocation.Since guest RAM for domain on static allocation is
static memory, which is pre-reserved through domain congifuration, it shall
never go back to heap.

This patch serie intends to fix this issue, by keeping page allocated and
storing it in page list when unpopulating memory, and retrieving page from page
list when populating memory.

Penny Zheng (5):
  xen/arm: field "flags" to cover all internal CDF_XXX
  xen/arm: introduce CDF_staticmem
  xen/arm: unpopulate memory when domain on static allocation
  xen/arm: retrieve reserved pages on populate_physmap
  xen/arm: no need to store pages in resv_page_list when domain is
    directly mapped

 xen/arch/arm/domain.c             |  3 ++-
 xen/arch/arm/domain_build.c       |  5 +++-
 xen/arch/arm/include/asm/domain.h |  7 +++--
 xen/common/domain.c               |  4 +++
 xen/common/memory.c               | 45 ++++++++++++++++++++++++++++++-
 xen/include/xen/domain.h          |  2 ++
 xen/include/xen/sched.h           |  6 +++++
 7 files changed, 67 insertions(+), 5 deletions(-)