)]}'
{
  "commit": "2032a93d66fa282ba0f2ea9152eeff9511fa9a96",
  "tree": "f0bbd50c3f237fa93c87207dc29602cbdcf9ad63",
  "parents": [
    "c8174f7b35b3018c4c7b3237ed1c792e454fd5c3"
  ],
  "author": {
    "name": "Lai Jiangshan",
    "email": "laijs@cn.fujitsu.com",
    "time": "Wed May 26 16:49:59 2010 +0800"
  },
  "committer": {
    "name": "Avi Kivity",
    "email": "avi@redhat.com",
    "time": "Sun Aug 01 10:35:52 2010 +0300"
  },
  "message": "KVM: MMU: Don\u0027t allocate gfns page for direct mmu pages\n\nWhen sp-\u003erole.direct is set, sp-\u003egfns does not contain any essential\ninformation, leaf sptes reachable from this sp are for a continuous\nguest physical memory range (a linear range).\nSo sp-\u003egfns[i] (if it was set) equals to sp-\u003egfn + i. (PT_PAGE_TABLE_LEVEL)\nObviously, it is not essential information, we can calculate it when need.\n\nIt means we don\u0027t need sp-\u003egfns when sp-\u003erole.direct\u003d1,\nThus we can save one page usage for every kvm_mmu_page.\n\nNote:\n  Access to sp-\u003egfns must be wrapped by kvm_mmu_page_get_gfn()\n  or kvm_mmu_page_set_gfn().\n  It is only exposed in FNAME(sync_page).\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nSigned-off-by: Avi Kivity \u003cavi@redhat.com\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "0e872ae309147bae6e5971757b47c520e6c019a0",
      "old_mode": 33188,
      "old_path": "Documentation/kvm/mmu.txt",
      "new_id": "2201dcba92a1f4644196bbb831ba07c55d2f5c8e",
      "new_mode": 33188,
      "new_path": "Documentation/kvm/mmu.txt"
    },
    {
      "type": "modify",
      "old_id": "07673487fd5d5daf723195cd7ad1f4aaf61bdf22",
      "old_mode": 33188,
      "old_path": "arch/x86/kvm/mmu.c",
      "new_id": "f46b6c9aff2789cb9a26d55084afa6db73e895e3",
      "new_mode": 33188,
      "new_path": "arch/x86/kvm/mmu.c"
    },
    {
      "type": "modify",
      "old_id": "167f53357eefd521caba5b2275792be766721c78",
      "old_mode": 33188,
      "old_path": "arch/x86/kvm/paging_tmpl.h",
      "new_id": "2ee7060a80a5de8acd33fb8e454b729d5f1efa25",
      "new_mode": 33188,
      "new_path": "arch/x86/kvm/paging_tmpl.h"
    }
  ]
}