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[Qemu-devel] [PATCH v2] qxl: add QXL_IO_FLUSH_{SURFACES, RELEASE} for gu
From: |
Alon Levy |
Subject: |
[Qemu-devel] [PATCH v2] qxl: add QXL_IO_FLUSH_{SURFACES, RELEASE} for guest S3&S4 support |
Date: |
Fri, 24 Jun 2011 15:02:56 +0200 |
Add two new IOs.
QXL_IO_FLUSH_SURFACES - equivalent to update area for all surfaces, used
to reduce vmexits from NumSurfaces to 1 on guest S3, S4 and resolution change
(windows
driver implementation is such that this is done on each of those occasions).
QXL_IO_FLUSH_RELEASE - used to ensure anything on last_release is put on the
release ring
for the client to free.
Cc: Yonit Halperin <address@hidden>
---
hw/qxl.c | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/hw/qxl.c b/hw/qxl.c
index 969a984..fab0208 100644
--- a/hw/qxl.c
+++ b/hw/qxl.c
@@ -1167,6 +1167,30 @@ static void ioport_write(void *opaque, uint32_t addr,
uint32_t val)
case QXL_IO_DESTROY_ALL_SURFACES:
qemu_spice_destroy_surfaces(&d->ssd);
break;
+ case QXL_IO_FLUSH_SURFACES:
+ dprint(d, 1, "QXL_IO_FLUSH_SURFACES (%d) entry (%s, s#=%d, res#=%d)\n",
+ val, qxl_mode_to_string(d->mode), d->guest_surfaces.count,
+ d->num_free_res);
+ qemu_spice_stop(&d->ssd);
+ qemu_spice_start(&d->ssd);
+ dprint(d, 1, "QXL_IO_FLUSH_SURFACES 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;
+ case QXL_IO_FLUSH_RELEASE: {
+ 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_FLUSH_RELEASE 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;
+ }
case QXL_IO_MEMSLOT_ADD_ASYNC:
PANIC_ON(val >= NUM_MEMSLOTS);
PANIC_ON(d->guest_slots[val].active);
--
1.7.5.4
- [Qemu-devel] [PATCH v2] qxl-logger: add timestamp to command log, (continued)
- [Qemu-devel] [PATCH v2] qxl-logger: add timestamp to command log, Alon Levy, 2011/06/24
- [Qemu-devel] [PATCH v2] qxl: update and add debug prints, Alon Levy, 2011/06/24
- [Qemu-devel] [PATCH v2] qxl: add dev id to guest prints, Alon Levy, 2011/06/24
- [Qemu-devel] [PATCH v2] qxl: add io_port_to_string, Alon Levy, 2011/06/24
- [Qemu-devel] [PATCH v2] qxl: update revision to QXL_REVISION_STABLE_V10, Alon Levy, 2011/06/24
- [Qemu-devel] [PATCH v2] qxl: add primary_created state, change mode lifetimes, Alon Levy, 2011/06/24
[Qemu-devel] [PATCH v2] qxl: add QXL_IO_FLUSH_{SURFACES, RELEASE} for guest S3&S4 support,
Alon Levy <=