diff options
author | Alon Levy <alevy@redhat.com> | 2011-06-05 11:01:48 +0300 |
---|---|---|
committer | Alon Levy <alevy@redhat.com> | 2011-06-17 20:37:22 +0200 |
commit | 19636164270c50d5493e930cc216d761925c0fdb (patch) | |
tree | 86be7ddc25f30a2f1db944a0baabd214e1cdd02d | |
parent | 95005e9aa268ed1c057f942e348e4f1da0faf9a7 (diff) |
qxl: add QXL_IO_UPDATE_MEM for guest S3&S4 supportqemu-kvm.master.spice.v36.s3.v1
Add QXL_IO_UPDATE_MEM. Used to reduce vmexits from the guest when it resets the
spice server state before going to sleep.
The implementation requires an updated spice-server (0.8.2) with the new
worker function update_mem.
Cc: Yonit Halperin <yhalperi@redhat.com>
-rw-r--r-- | hw/qxl.c | 29 |
1 files changed, 29 insertions, 0 deletions
@@ -1072,6 +1072,35 @@ static void ioport_write(void *opaque, uint32_t addr, uint32_t val) case QXL_IO_DESTROY_ALL_SURFACES: d->ssd.worker->destroy_surfaces(d->ssd.worker); break; +#if defined(FEATURE_QXL_IO_UPDATE_MEM) && (SPICE_INTERFACE_QXL_MAJOR > 3 \ + || (SPICE_INTERFACE_QXL_MAJOR == 3 && SPICE_INTERFACE_QXL_MINOR >= 1)) + case QXL_IO_UPDATE_MEM: + dprint(d, 1, "QXL_IO_UPDATE_MEM (%d) entry (%s, s#=%d, res#=%d)\n", + val, qxl_mode_to_string(d->mode), d->guest_surfaces.count, + d->num_free_res); + switch (val) { + case (QXL_UPDATE_MEM_RENDER_ALL): + d->ssd.worker->update_mem(d->ssd.worker); + break; + case (QXL_UPDATE_MEM_FLUSH): { + QXLReleaseRing *ring = &d->ram->release_ring; + if (ring->prod - ring->cons + 1 == ring->num_items) { + // TODO - "return" a value to the guest and let it loop? + fprintf(stderr, + "ERROR: no flush, full release ring [p%d,%dc]\n", + ring->prod, ring->cons); + } + qxl_push_free_res(d, 1 /* flush */); + dprint(d, 1, "QXL_IO_UPDATE_MEM exit (%s, s#=%d, res#=%d,%p)\n", + qxl_mode_to_string(d->mode), d->guest_surfaces.count, + d->num_free_res, d->last_release); + break; + } + default: + fprintf(stderr, "ERROR: unexpected value to QXL_IO_UPDATE_MEM\n"); + } + break; +#endif default: fprintf(stderr, "%s: ioport=0x%x, abort()\n", __FUNCTION__, io_port); abort(); |