diff options
| author | Mark Kanda <mark.kanda@oracle.com> | 2024-01-31 10:53:27 -0600 |
|---|---|---|
| committer | David Hildenbrand <david@redhat.com> | 2024-02-06 08:15:22 +0100 |
| commit | 04accf43df83aa10f06f7dbda3ecf0db97f0c5a6 (patch) | |
| tree | c5668fe7f5ae98622af2f69ac4f2a97ff219a97a /system | |
| parent | 540a1abbf0b243e4cfb4333c5d30a041f7080ba4 (diff) | |
oslib-posix: initialize backend memory objects in parallel
QEMU initializes preallocated backend memory as the objects are parsed from
the command line. This is not optimal in some cases (e.g. memory spanning
multiple NUMA nodes) because the memory objects are initialized in series.
Allow the initialization to occur in parallel (asynchronously). In order to
ensure optimal thread placement, asynchronous initialization requires prealloc
context threads to be in use.
Signed-off-by: Mark Kanda <mark.kanda@oracle.com>
Message-ID: <20240131165327.3154970-2-mark.kanda@oracle.com>
Tested-by: Mario Casquero <mcasquer@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Diffstat (limited to 'system')
| -rw-r--r-- | system/vl.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/system/vl.c b/system/vl.c index bb959cbc44..2a0bd08ff1 100644 --- a/system/vl.c +++ b/system/vl.c @@ -2013,6 +2013,14 @@ static void qemu_create_late_backends(void) object_option_foreach_add(object_create_late); + /* + * Wait for any outstanding memory prealloc from created memory + * backends to complete. + */ + if (!qemu_finish_async_prealloc_mem(&error_fatal)) { + exit(1); + } + if (tpm_init() < 0) { exit(1); } @@ -3699,6 +3707,7 @@ void qemu_init(int argc, char **argv) * over memory-backend-file objects). */ qemu_create_late_backends(); + phase_advance(PHASE_LATE_BACKENDS_CREATED); /* * Note: creates a QOM object, must run only after global and |