diff options
| author | David Stevens <stevensd@chromium.org> | 2021-09-22 13:58:59 +0900 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-10-01 03:44:58 -0400 |
| commit | deae4a10f16649d9c8bfb89f38b61930fb938284 (patch) | |
| tree | 1a02e48834bd4dcebf1f06d4828a4fadada9ebb8 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | e9d0c0c4f7ea47d25490cd466cefe6d5c1a4d0ec (diff) | |
KVM: x86: only allocate gfn_track when necessary
Avoid allocating the gfn_track arrays if nothing needs them. If there
are no external to KVM users of the API (i.e. no GVT-g), then page
tracking is only needed for shadow page tables. This means that when tdp
is enabled and there are no external users, then the gfn_track arrays
can be lazily allocated when the shadow MMU is actually used. This avoid
allocations equal to .05% of guest memory when nested virtualization is
not used, if the kernel is compiled without GVT-g.
Signed-off-by: David Stevens <stevensd@chromium.org>
Message-Id: <20210922045859.2011227-3-stevensd@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions