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[Qemu-devel] [PULL 22/33] vhost: Move log_dirty check
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] [PULL 22/33] vhost: Move log_dirty check |
Date: |
Tue, 16 Jan 2018 06:48:06 +0200 |
From: "Dr. David Alan Gilbert" <address@hidden>
Move the log_dirty check into vhost_section.
Signed-off-by: Dr. David Alan Gilbert <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
---
hw/virtio/vhost.c | 20 +++++++++++++-------
hw/virtio/trace-events | 3 +++
2 files changed, 16 insertions(+), 7 deletions(-)
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index 8a85dde..83df043 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -27,6 +27,7 @@
#include "hw/virtio/virtio-access.h"
#include "migration/blocker.h"
#include "sysemu/dma.h"
+#include "trace.h"
/* enabled until disconnected backend stabilizes */
#define _VHOST_DEBUG 1
@@ -567,18 +568,12 @@ static void vhost_set_memory(MemoryListener *listener,
memory_listener);
hwaddr start_addr = section->offset_within_address_space;
ram_addr_t size = int128_get64(section->size);
- bool log_dirty =
- memory_region_get_dirty_log_mask(section->mr) & ~(1 <<
DIRTY_MEMORY_MIGRATION);
int s = offsetof(struct vhost_memory, regions) +
(dev->mem->nregions + 1) * sizeof dev->mem->regions[0];
void *ram;
dev->mem = g_realloc(dev->mem, s);
- if (log_dirty) {
- add = false;
- }
-
assert(size);
/* Optimize no-change case. At least cirrus_vga does this a lot at this
time. */
@@ -611,8 +606,19 @@ static void vhost_set_memory(MemoryListener *listener,
static bool vhost_section(MemoryRegionSection *section)
{
- return memory_region_is_ram(section->mr) &&
+ bool result;
+ bool log_dirty = memory_region_get_dirty_log_mask(section->mr) &
+ ~(1 << DIRTY_MEMORY_MIGRATION);
+ result = memory_region_is_ram(section->mr) &&
!memory_region_is_rom(section->mr);
+
+ /* Vhost doesn't handle any block which is doing dirty-tracking other
+ * than migration; this typically fires on VGA areas.
+ */
+ result &= !log_dirty;
+
+ trace_vhost_section(section->mr->name, result);
+ return result;
}
static void vhost_begin(MemoryListener *listener)
diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events
index 775461a..4a493bc 100644
--- a/hw/virtio/trace-events
+++ b/hw/virtio/trace-events
@@ -1,5 +1,8 @@
# See docs/devel/tracing.txt for syntax documentation.
+# hw/virtio/vhost.c
+vhost_section(const char *name, int r) "%s:%d"
+
# hw/virtio/virtio.c
virtqueue_alloc_element(void *elem, size_t sz, unsigned in_num, unsigned
out_num) "elem %p size %zd in_num %u out_num %u"
virtqueue_fill(void *vq, const void *elem, unsigned int len, unsigned int idx)
"vq %p elem %p len %u idx %u"
--
MST
- [Qemu-devel] [PULL 14/33] ACPI/unit-test: Add a testcase for RAM allocation in numa node, (continued)
- [Qemu-devel] [PULL 14/33] ACPI/unit-test: Add a testcase for RAM allocation in numa node, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 12/33] intel-iommu: Extend address width to 48 bits, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 13/33] hw/pci-bridge: fix QEMU crash because of pcie-root-port, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 15/33] hw/acpi-build: Make next_base easy to follow, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 16/33] vhost-user-test: fix features mask, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 17/33] vhost-user-test: extract read-guest-mem test from main loop, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 18/33] vhost-user-test: setup virtqueues in all tests, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 19/33] vhost-user-test: make features mask an init_virtio_dev() argument, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 20/33] vhost-user-test: use init_virtio_dev in multiqueue test, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 21/33] vhost: Build temporary section list and deref after commit, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 22/33] vhost: Move log_dirty check,
Michael S. Tsirkin <=
- [Qemu-devel] [PULL 24/33] vhost: Merge sections added to temporary list, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 23/33] vhost: Simplify ring verification checks, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 26/33] x86_iommu: check if machine has PCI bus, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 28/33] tests: acpi: init table descriptor in test_dst_table(), Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 29/33] tests: acpi: rename test_acpi_tables()/test_dst_table() to reflect its usage, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 27/33] tests: acpi: move tested tables array allocation outside of test_acpi_dsdt_table(), Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 30/33] tests: acpi: add comments to fetch_rsdt_referenced_tables/data->tables usage, Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 25/33] x86_iommu: Move machine check to x86_iommu_realize(), Michael S. Tsirkin, 2018/01/15
- [Qemu-devel] [PULL 31/33] vhost-user: factor out msg head and payload, Michael S. Tsirkin, 2018/01/15