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-rw-r--r--hw/vfio/cpr.c2
-rw-r--r--hw/vfio/device.c6
-rw-r--r--hw/vfio/display.c4
-rw-r--r--hw/vfio/helpers.c17
-rw-r--r--hw/vfio/igd.c19
-rw-r--r--hw/vfio/migration-multifd.c101
-rw-r--r--hw/vfio/migration-multifd.h3
-rw-r--r--hw/vfio/migration.c10
-rw-r--r--hw/vfio/pci.c73
-rw-r--r--hw/vfio/pci.h19
-rw-r--r--hw/vfio/trace-events1
-rw-r--r--hw/vfio/types.h23
-rw-r--r--hw/vfio/vfio-helpers.h2
-rw-r--r--hw/vfio/vfio-migration-internal.h2
14 files changed, 248 insertions, 34 deletions
diff --git a/hw/vfio/cpr.c b/hw/vfio/cpr.c
index af0f12a..384b56c 100644
--- a/hw/vfio/cpr.c
+++ b/hw/vfio/cpr.c
@@ -116,6 +116,8 @@ static int vfio_cpr_pci_post_load(void *opaque, int version_id)
PCIDevice *pdev = &vdev->pdev;
int nr_vectors;
+ vfio_sub_page_bar_update_mappings(vdev);
+
if (msix_enabled(pdev)) {
vfio_pci_msix_set_notifiers(vdev);
nr_vectors = vdev->msix->entries;
diff --git a/hw/vfio/device.c b/hw/vfio/device.c
index 96cf214..52a1996 100644
--- a/hw/vfio/device.c
+++ b/hw/vfio/device.c
@@ -463,6 +463,8 @@ void vfio_device_detach(VFIODevice *vbasedev)
void vfio_device_prepare(VFIODevice *vbasedev, VFIOContainerBase *bcontainer,
struct vfio_device_info *info)
{
+ int i;
+
vbasedev->num_irqs = info->num_irqs;
vbasedev->num_regions = info->num_regions;
vbasedev->flags = info->flags;
@@ -477,6 +479,9 @@ void vfio_device_prepare(VFIODevice *vbasedev, VFIOContainerBase *bcontainer,
vbasedev->num_regions);
if (vbasedev->use_region_fds) {
vbasedev->region_fds = g_new0(int, vbasedev->num_regions);
+ for (i = 0; i < vbasedev->num_regions; i++) {
+ vbasedev->region_fds[i] = -1;
+ }
}
}
@@ -489,7 +494,6 @@ void vfio_device_unprepare(VFIODevice *vbasedev)
if (vbasedev->region_fds != NULL && vbasedev->region_fds[i] != -1) {
close(vbasedev->region_fds[i]);
}
-
}
g_clear_pointer(&vbasedev->reginfo, g_free);
diff --git a/hw/vfio/display.c b/hw/vfio/display.c
index 9c6f5aa..faacd90 100644
--- a/hw/vfio/display.c
+++ b/hw/vfio/display.c
@@ -365,7 +365,7 @@ static bool vfio_display_dmabuf_init(VFIOPCIDevice *vdev, Error **errp)
&vfio_display_dmabuf_ops,
vdev);
if (vdev->enable_ramfb) {
- vdev->dpy->ramfb = ramfb_setup(errp);
+ vdev->dpy->ramfb = ramfb_setup(vdev->use_legacy_x86_rom, errp);
if (!vdev->dpy->ramfb) {
return false;
}
@@ -494,7 +494,7 @@ static bool vfio_display_region_init(VFIOPCIDevice *vdev, Error **errp)
&vfio_display_region_ops,
vdev);
if (vdev->enable_ramfb) {
- vdev->dpy->ramfb = ramfb_setup(errp);
+ vdev->dpy->ramfb = ramfb_setup(vdev->use_legacy_x86_rom, errp);
if (!vdev->dpy->ramfb) {
return false;
}
diff --git a/hw/vfio/helpers.c b/hw/vfio/helpers.c
index 9a5f621..23d13e5 100644
--- a/hw/vfio/helpers.c
+++ b/hw/vfio/helpers.c
@@ -209,3 +209,20 @@ retry:
return info;
}
+
+bool vfio_arch_wants_loading_config_after_iter(void)
+{
+ /*
+ * Starting the config load only after all iterables were loaded (during
+ * non-iterables loading phase) is required for ARM64 due to this platform
+ * VFIO dependency on interrupt controller being loaded first.
+ *
+ * See commit d329f5032e17 ("vfio: Move the saving of the config space to
+ * the right place in VFIO migration").
+ */
+#if defined(TARGET_ARM)
+ return true;
+#else
+ return false;
+#endif
+}
diff --git a/hw/vfio/igd.c b/hw/vfio/igd.c
index e7a9d1f..ee0767b 100644
--- a/hw/vfio/igd.c
+++ b/hw/vfio/igd.c
@@ -113,6 +113,7 @@ static int igd_gen(VFIOPCIDevice *vdev)
#define IGD_BDSM 0x5c /* Base Data of Stolen Memory */
#define IGD_BDSM_GEN11 0xc0 /* Base Data of Stolen Memory of gen 11 and later */
+#define IGD_GMCH_VGA_DISABLE BIT(1)
#define IGD_GMCH_GEN6_GMS_SHIFT 3 /* SNB_GMCH in i915 */
#define IGD_GMCH_GEN6_GMS_MASK 0x1f
#define IGD_GMCH_GEN8_GMS_SHIFT 8 /* BDW_GMCH in i915 */
@@ -533,12 +534,14 @@ static bool vfio_pci_igd_config_quirk(VFIOPCIDevice *vdev, Error **errp)
/*
* For backward compatibility, enable legacy mode when
* - Device geneation is 6 to 9 (including both)
+ * - IGD claims VGA cycles on host
* - Machine type is i440fx (pc_piix)
* - IGD device is at guest BDF 00:02.0
* - Not manually disabled by x-igd-legacy-mode=off
*/
if ((vdev->igd_legacy_mode != ON_OFF_AUTO_OFF) &&
(gen >= 6 && gen <= 9) &&
+ !(gmch & IGD_GMCH_VGA_DISABLE) &&
!strcmp(MACHINE_GET_CLASS(qdev_get_machine())->family, "pc_piix") &&
(&vdev->pdev == pci_find_device(pci_device_root_bus(&vdev->pdev),
0, PCI_DEVFN(0x2, 0)))) {
@@ -568,14 +571,16 @@ static bool vfio_pci_igd_config_quirk(VFIOPCIDevice *vdev, Error **errp)
}
/*
- * If IGD VGA Disable is clear (expected) and VGA is not already
- * enabled, try to enable it. Probably shouldn't be using legacy mode
- * without VGA, but also no point in us enabling VGA if disabled in
- * hardware.
+ * If VGA is not already enabled, try to enable it. We shouldn't be
+ * using legacy mode without VGA.
*/
- if (!(gmch & 0x2) && !vdev->vga && !vfio_populate_vga(vdev, &err)) {
- error_setg(&err, "Unable to enable VGA access");
- goto error;
+ if (!vdev->vga) {
+ if (vfio_populate_vga(vdev, &err)) {
+ vfio_pci_config_register_vga(vdev);
+ } else {
+ error_setg(&err, "Unable to enable VGA access");
+ goto error;
+ }
}
/* Enable OpRegion and LPC bridge quirk */
diff --git a/hw/vfio/migration-multifd.c b/hw/vfio/migration-multifd.c
index 5563548..e478503 100644
--- a/hw/vfio/migration-multifd.c
+++ b/hw/vfio/migration-multifd.c
@@ -13,7 +13,6 @@
#include "hw/vfio/vfio-device.h"
#include "migration/misc.h"
#include "qapi/error.h"
-#include "qemu/bswap.h"
#include "qemu/error-report.h"
#include "qemu/lockable.h"
#include "qemu/main-loop.h"
@@ -23,6 +22,7 @@
#include "migration-multifd.h"
#include "vfio-migration-internal.h"
#include "trace.h"
+#include "vfio-helpers.h"
#define VFIO_DEVICE_STATE_CONFIG_STATE (1)
@@ -35,6 +35,18 @@ typedef struct VFIODeviceStatePacket {
uint8_t data[0];
} QEMU_PACKED VFIODeviceStatePacket;
+bool vfio_load_config_after_iter(VFIODevice *vbasedev)
+{
+ if (vbasedev->migration_load_config_after_iter == ON_OFF_AUTO_ON) {
+ return true;
+ } else if (vbasedev->migration_load_config_after_iter == ON_OFF_AUTO_OFF) {
+ return false;
+ }
+
+ assert(vbasedev->migration_load_config_after_iter == ON_OFF_AUTO_AUTO);
+ return vfio_arch_wants_loading_config_after_iter();
+}
+
/* type safety */
typedef struct VFIOStateBuffers {
GArray *array;
@@ -50,12 +62,16 @@ typedef struct VFIOMultifd {
bool load_bufs_thread_running;
bool load_bufs_thread_want_exit;
+ bool load_bufs_iter_done;
+ QemuCond load_bufs_iter_done_cond;
+
VFIOStateBuffers load_bufs;
QemuCond load_bufs_buffer_ready_cond;
QemuCond load_bufs_thread_finished_cond;
QemuMutex load_bufs_mutex; /* Lock order: this lock -> BQL */
uint32_t load_buf_idx;
uint32_t load_buf_idx_last;
+ size_t load_buf_queued_pending_buffers_size;
} VFIOMultifd;
static void vfio_state_buffer_clear(gpointer data)
@@ -112,6 +128,7 @@ static bool vfio_load_state_buffer_insert(VFIODevice *vbasedev,
VFIOMigration *migration = vbasedev->migration;
VFIOMultifd *multifd = migration->multifd;
VFIOStateBuffer *lb;
+ size_t data_size = packet_total_size - sizeof(*packet);
vfio_state_buffers_assert_init(&multifd->load_bufs);
if (packet->idx >= vfio_state_buffers_size_get(&multifd->load_bufs)) {
@@ -127,8 +144,19 @@ static bool vfio_load_state_buffer_insert(VFIODevice *vbasedev,
assert(packet->idx >= multifd->load_buf_idx);
- lb->data = g_memdup2(&packet->data, packet_total_size - sizeof(*packet));
- lb->len = packet_total_size - sizeof(*packet);
+ multifd->load_buf_queued_pending_buffers_size += data_size;
+ if (multifd->load_buf_queued_pending_buffers_size >
+ vbasedev->migration_max_queued_buffers_size) {
+ error_setg(errp,
+ "%s: queuing state buffer %" PRIu32
+ " would exceed the size max of %" PRIu64,
+ vbasedev->name, packet->idx,
+ vbasedev->migration_max_queued_buffers_size);
+ return false;
+ }
+
+ lb->data = g_memdup2(&packet->data, data_size);
+ lb->len = data_size;
lb->is_present = true;
return true;
@@ -312,6 +340,9 @@ static bool vfio_load_state_buffer_write(VFIODevice *vbasedev,
assert(wr_ret <= buf_len);
buf_len -= wr_ret;
buf_cur += wr_ret;
+
+ assert(multifd->load_buf_queued_pending_buffers_size >= wr_ret);
+ multifd->load_buf_queued_pending_buffers_size -= wr_ret;
}
trace_vfio_load_state_device_buffer_load_end(vbasedev->name,
@@ -394,6 +425,22 @@ static bool vfio_load_bufs_thread(void *opaque, bool *should_quit, Error **errp)
multifd->load_buf_idx++;
}
+ if (vfio_load_config_after_iter(vbasedev)) {
+ while (!multifd->load_bufs_iter_done) {
+ qemu_cond_wait(&multifd->load_bufs_iter_done_cond,
+ &multifd->load_bufs_mutex);
+
+ /*
+ * Need to re-check cancellation immediately after wait in case
+ * cond was signalled by vfio_load_cleanup_load_bufs_thread().
+ */
+ if (vfio_load_bufs_thread_want_exit(multifd, should_quit)) {
+ error_setg(errp, "operation cancelled");
+ goto thread_exit;
+ }
+ }
+ }
+
if (!vfio_load_bufs_thread_load_config(vbasedev, errp)) {
goto thread_exit;
}
@@ -413,6 +460,48 @@ thread_exit:
return ret;
}
+int vfio_load_state_config_load_ready(VFIODevice *vbasedev)
+{
+ VFIOMigration *migration = vbasedev->migration;
+ VFIOMultifd *multifd = migration->multifd;
+ int ret = 0;
+
+ if (!vfio_multifd_transfer_enabled(vbasedev)) {
+ error_report("%s: got DEV_CONFIG_LOAD_READY outside multifd transfer",
+ vbasedev->name);
+ return -EINVAL;
+ }
+
+ if (!vfio_load_config_after_iter(vbasedev)) {
+ error_report("%s: got DEV_CONFIG_LOAD_READY but was disabled",
+ vbasedev->name);
+ return -EINVAL;
+ }
+
+ assert(multifd);
+
+ /* The lock order is load_bufs_mutex -> BQL so unlock BQL here first */
+ bql_unlock();
+ WITH_QEMU_LOCK_GUARD(&multifd->load_bufs_mutex) {
+ if (multifd->load_bufs_iter_done) {
+ /* Can't print error here as we're outside BQL */
+ ret = -EINVAL;
+ break;
+ }
+
+ multifd->load_bufs_iter_done = true;
+ qemu_cond_signal(&multifd->load_bufs_iter_done_cond);
+ }
+ bql_lock();
+
+ if (ret) {
+ error_report("%s: duplicate DEV_CONFIG_LOAD_READY",
+ vbasedev->name);
+ }
+
+ return ret;
+}
+
static VFIOMultifd *vfio_multifd_new(void)
{
VFIOMultifd *multifd = g_new(VFIOMultifd, 1);
@@ -423,8 +512,12 @@ static VFIOMultifd *vfio_multifd_new(void)
multifd->load_buf_idx = 0;
multifd->load_buf_idx_last = UINT32_MAX;
+ multifd->load_buf_queued_pending_buffers_size = 0;
qemu_cond_init(&multifd->load_bufs_buffer_ready_cond);
+ multifd->load_bufs_iter_done = false;
+ qemu_cond_init(&multifd->load_bufs_iter_done_cond);
+
multifd->load_bufs_thread_running = false;
multifd->load_bufs_thread_want_exit = false;
qemu_cond_init(&multifd->load_bufs_thread_finished_cond);
@@ -448,6 +541,7 @@ static void vfio_load_cleanup_load_bufs_thread(VFIOMultifd *multifd)
multifd->load_bufs_thread_want_exit = true;
qemu_cond_signal(&multifd->load_bufs_buffer_ready_cond);
+ qemu_cond_signal(&multifd->load_bufs_iter_done_cond);
qemu_cond_wait(&multifd->load_bufs_thread_finished_cond,
&multifd->load_bufs_mutex);
}
@@ -460,6 +554,7 @@ static void vfio_multifd_free(VFIOMultifd *multifd)
vfio_load_cleanup_load_bufs_thread(multifd);
qemu_cond_destroy(&multifd->load_bufs_thread_finished_cond);
+ qemu_cond_destroy(&multifd->load_bufs_iter_done_cond);
vfio_state_buffers_destroy(&multifd->load_bufs);
qemu_cond_destroy(&multifd->load_bufs_buffer_ready_cond);
qemu_mutex_destroy(&multifd->load_bufs_mutex);
diff --git a/hw/vfio/migration-multifd.h b/hw/vfio/migration-multifd.h
index ebf22a7..82d2d3a 100644
--- a/hw/vfio/migration-multifd.h
+++ b/hw/vfio/migration-multifd.h
@@ -20,9 +20,12 @@ void vfio_multifd_cleanup(VFIODevice *vbasedev);
bool vfio_multifd_transfer_supported(void);
bool vfio_multifd_transfer_enabled(VFIODevice *vbasedev);
+bool vfio_load_config_after_iter(VFIODevice *vbasedev);
bool vfio_multifd_load_state_buffer(void *opaque, char *data, size_t data_size,
Error **errp);
+int vfio_load_state_config_load_ready(VFIODevice *vbasedev);
+
void vfio_multifd_emit_dummy_eos(VFIODevice *vbasedev, QEMUFile *f);
bool
diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c
index c329578..4c06e3d 100644
--- a/hw/vfio/migration.c
+++ b/hw/vfio/migration.c
@@ -675,7 +675,11 @@ static void vfio_save_state(QEMUFile *f, void *opaque)
int ret;
if (vfio_multifd_transfer_enabled(vbasedev)) {
- vfio_multifd_emit_dummy_eos(vbasedev, f);
+ if (vfio_load_config_after_iter(vbasedev)) {
+ qemu_put_be64(f, VFIO_MIG_FLAG_DEV_CONFIG_LOAD_READY);
+ } else {
+ vfio_multifd_emit_dummy_eos(vbasedev, f);
+ }
return;
}
@@ -784,6 +788,10 @@ static int vfio_load_state(QEMUFile *f, void *opaque, int version_id)
return ret;
}
+ case VFIO_MIG_FLAG_DEV_CONFIG_LOAD_READY:
+ {
+ return vfio_load_state_config_load_ready(vbasedev);
+ }
default:
error_report("%s: Unknown tag 0x%"PRIx64, vbasedev->name, data);
return -EINVAL;
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 1093b28..4fa692c 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -49,8 +49,6 @@
#include "vfio-migration-internal.h"
#include "vfio-helpers.h"
-#define TYPE_VFIO_PCI_NOHOTPLUG "vfio-pci-nohotplug"
-
/* Protected by BQL */
static KVMRouteChange vfio_route_change;
@@ -2826,6 +2824,20 @@ static int vfio_pci_load_config(VFIODevice *vbasedev, QEMUFile *f)
return ret;
}
+void vfio_sub_page_bar_update_mappings(VFIOPCIDevice *vdev)
+{
+ PCIDevice *pdev = &vdev->pdev;
+ int page_size = qemu_real_host_page_size();
+ int bar;
+
+ for (bar = 0; bar < PCI_ROM_SLOT; bar++) {
+ PCIIORegion *r = &pdev->io_regions[bar];
+ if (r->addr != PCI_BAR_UNMAPPED && r->size > 0 && r->size < page_size) {
+ vfio_sub_page_bar_update_mapping(pdev, bar);
+ }
+ }
+}
+
static VFIODeviceOps vfio_pci_ops = {
.vfio_compute_needs_reset = vfio_pci_compute_needs_reset,
.vfio_hot_reset_multi = vfio_pci_hot_reset_multi,
@@ -2893,10 +2905,6 @@ bool vfio_populate_vga(VFIOPCIDevice *vdev, Error **errp)
"vfio-vga-io@0x3c0",
QEMU_PCI_VGA_IO_HI_SIZE);
- pci_register_vga(&vdev->pdev, &vdev->vga->region[QEMU_PCI_VGA_MEM].mem,
- &vdev->vga->region[QEMU_PCI_VGA_IO_LO].mem,
- &vdev->vga->region[QEMU_PCI_VGA_IO_HI].mem);
-
return true;
}
@@ -3154,6 +3162,15 @@ static void vfio_unregister_req_notifier(VFIOPCIDevice *vdev)
vdev->req_enabled = false;
}
+void vfio_pci_config_register_vga(VFIOPCIDevice *vdev)
+{
+ assert(vdev->vga != NULL);
+
+ pci_register_vga(&vdev->pdev, &vdev->vga->region[QEMU_PCI_VGA_MEM].mem,
+ &vdev->vga->region[QEMU_PCI_VGA_IO_LO].mem,
+ &vdev->vga->region[QEMU_PCI_VGA_IO_HI].mem);
+}
+
bool vfio_pci_config_setup(VFIOPCIDevice *vdev, Error **errp)
{
PCIDevice *pdev = &vdev->pdev;
@@ -3228,6 +3245,23 @@ bool vfio_pci_config_setup(VFIOPCIDevice *vdev, Error **errp)
vdev->sub_device_id);
}
+ /*
+ * Class code is a 24-bit value at config space 0x09. Allow overriding it
+ * with any 24-bit value.
+ */
+ if (vdev->class_code != PCI_ANY_ID) {
+ if (vdev->class_code > 0xffffff) {
+ error_setg(errp, "invalid PCI class code provided");
+ return false;
+ }
+ /* Higher 24 bits of PCI_CLASS_REVISION are class code */
+ vfio_add_emulated_long(vdev, PCI_CLASS_REVISION,
+ vdev->class_code << 8, ~0xff);
+ trace_vfio_pci_emulated_class_code(vbasedev->name, vdev->class_code);
+ } else {
+ vdev->class_code = pci_get_long(pdev->config + PCI_CLASS_REVISION) >> 8;
+ }
+
/* QEMU can change multi-function devices to single function, or reverse */
vdev->emulated_config_bits[PCI_HEADER_TYPE] =
PCI_HEADER_TYPE_MULTI_FUNCTION;
@@ -3257,6 +3291,10 @@ bool vfio_pci_config_setup(VFIOPCIDevice *vdev, Error **errp)
vfio_bars_register(vdev);
+ if (vdev->vga && vfio_is_vga(vdev)) {
+ vfio_pci_config_register_vga(vdev);
+ }
+
return true;
}
@@ -3623,6 +3661,11 @@ static const Property vfio_pci_dev_properties[] = {
vbasedev.migration_multifd_transfer,
vfio_pci_migration_multifd_transfer_prop, OnOffAuto,
.set_default = true, .defval.i = ON_OFF_AUTO_AUTO),
+ DEFINE_PROP_ON_OFF_AUTO("x-migration-load-config-after-iter", VFIOPCIDevice,
+ vbasedev.migration_load_config_after_iter,
+ ON_OFF_AUTO_AUTO),
+ DEFINE_PROP_SIZE("x-migration-max-queued-buffers-size", VFIOPCIDevice,
+ vbasedev.migration_max_queued_buffers_size, UINT64_MAX),
DEFINE_PROP_BOOL("migration-events", VFIOPCIDevice,
vbasedev.migration_events, false),
DEFINE_PROP_BOOL("x-no-mmap", VFIOPCIDevice, vbasedev.no_mmap, false),
@@ -3643,6 +3686,8 @@ static const Property vfio_pci_dev_properties[] = {
sub_vendor_id, PCI_ANY_ID),
DEFINE_PROP_UINT32("x-pci-sub-device-id", VFIOPCIDevice,
sub_device_id, PCI_ANY_ID),
+ DEFINE_PROP_UINT32("x-pci-class-code", VFIOPCIDevice,
+ class_code, PCI_ANY_ID),
DEFINE_PROP_UINT32("x-igd-gms", VFIOPCIDevice, igd_gms, 0),
DEFINE_PROP_UNSIGNED_NODEFAULT("x-nv-gpudirect-clique", VFIOPCIDevice,
nv_gpudirect_clique,
@@ -3797,6 +3842,20 @@ static void vfio_pci_dev_class_init(ObjectClass *klass, const void *data)
"x-migration-multifd-transfer",
"Transfer this device state via "
"multifd channels when live migrating it");
+ object_class_property_set_description(klass, /* 10.1 */
+ "x-migration-load-config-after-iter",
+ "Start the config load only after "
+ "all iterables were loaded (during "
+ "non-iterables loading phase) when "
+ "doing live migration of device state "
+ "via multifd channels");
+ object_class_property_set_description(klass, /* 10.1 */
+ "x-migration-max-queued-buffers-size",
+ "Maximum size of in-flight VFIO "
+ "device state buffers queued at the "
+ "destination when doing live "
+ "migration of device state via "
+ "multifd channels");
}
static const TypeInfo vfio_pci_dev_info = {
@@ -3809,6 +3868,8 @@ static const TypeInfo vfio_pci_dev_info = {
static const Property vfio_pci_dev_nohotplug_properties[] = {
DEFINE_PROP_BOOL("ramfb", VFIOPCIDevice, enable_ramfb, false),
+ DEFINE_PROP_BOOL("use-legacy-x86-rom", VFIOPCIDevice,
+ use_legacy_x86_rom, false),
DEFINE_PROP_ON_OFF_AUTO("x-ramfb-migrate", VFIOPCIDevice, ramfb_migrate,
ON_OFF_AUTO_AUTO),
};
diff --git a/hw/vfio/pci.h b/hw/vfio/pci.h
index 495fae7..81465a8 100644
--- a/hw/vfio/pci.h
+++ b/hw/vfio/pci.h
@@ -14,6 +14,7 @@
#include "system/memory.h"
#include "hw/pci/pci_device.h"
+#include "hw/vfio/types.h"
#include "hw/vfio/vfio-device.h"
#include "hw/vfio/vfio-region.h"
#include "qemu/event_notifier.h"
@@ -119,17 +120,8 @@ typedef struct VFIOMSIXInfo {
MemoryRegion *pba_region;
} VFIOMSIXInfo;
-/*
- * TYPE_VFIO_PCI_BASE is an abstract type used to share code
- * between VFIO implementations that use a kernel driver
- * with those that use user sockets.
- */
-#define TYPE_VFIO_PCI_BASE "vfio-pci-base"
OBJECT_DECLARE_SIMPLE_TYPE(VFIOPCIDevice, VFIO_PCI_BASE)
-#define TYPE_VFIO_PCI "vfio-pci"
-/* TYPE_VFIO_PCI shares struct VFIOPCIDevice. */
-
struct VFIOPCIDevice {
PCIDevice pdev;
VFIODevice vbasedev;
@@ -157,6 +149,7 @@ struct VFIOPCIDevice {
uint32_t device_id;
uint32_t sub_vendor_id;
uint32_t sub_device_id;
+ uint32_t class_code;
uint32_t features;
#define VFIO_FEATURE_ENABLE_VGA_BIT 0
#define VFIO_FEATURE_ENABLE_VGA (1 << VFIO_FEATURE_ENABLE_VGA_BIT)
@@ -188,6 +181,7 @@ struct VFIOPCIDevice {
bool no_kvm_ioeventfd;
bool no_vfio_ioeventfd;
bool enable_ramfb;
+ bool use_legacy_x86_rom;
OnOffAuto ramfb_migrate;
bool defer_kvm_irq_routing;
bool clear_parent_atomics_on_exit;
@@ -205,10 +199,7 @@ static inline bool vfio_pci_is(VFIOPCIDevice *vdev, uint32_t vendor, uint32_t de
static inline bool vfio_is_vga(VFIOPCIDevice *vdev)
{
- PCIDevice *pdev = &vdev->pdev;
- uint16_t class = pci_get_word(pdev->config + PCI_CLASS_DEVICE);
-
- return class == PCI_CLASS_DISPLAY_VGA;
+ return (vdev->class_code >> 8) == PCI_CLASS_DISPLAY_VGA;
}
/* MSI/MSI-X/INTx */
@@ -228,6 +219,7 @@ void vfio_pci_write_config(PCIDevice *pdev,
uint64_t vfio_vga_read(void *opaque, hwaddr addr, unsigned size);
void vfio_vga_write(void *opaque, hwaddr addr, uint64_t data, unsigned size);
+void vfio_sub_page_bar_update_mappings(VFIOPCIDevice *vdev);
bool vfio_opt_rom_in_denylist(VFIOPCIDevice *vdev);
bool vfio_config_quirk_setup(VFIOPCIDevice *vdev, Error **errp);
void vfio_vga_quirk_setup(VFIOPCIDevice *vdev);
@@ -261,6 +253,7 @@ extern const VMStateDescription vfio_display_vmstate;
void vfio_pci_bars_exit(VFIOPCIDevice *vdev);
bool vfio_pci_add_capabilities(VFIOPCIDevice *vdev, Error **errp);
+void vfio_pci_config_register_vga(VFIOPCIDevice *vdev);
bool vfio_pci_config_setup(VFIOPCIDevice *vdev, Error **errp);
bool vfio_pci_interrupt_setup(VFIOPCIDevice *vdev, Error **errp);
void vfio_pci_intx_eoi(VFIODevice *vbasedev);
diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events
index 8ec0ad0..fc6ed23 100644
--- a/hw/vfio/trace-events
+++ b/hw/vfio/trace-events
@@ -48,6 +48,7 @@ vfio_pci_emulated_vendor_id(const char *name, uint16_t val) "%s 0x%04x"
vfio_pci_emulated_device_id(const char *name, uint16_t val) "%s 0x%04x"
vfio_pci_emulated_sub_vendor_id(const char *name, uint16_t val) "%s 0x%04x"
vfio_pci_emulated_sub_device_id(const char *name, uint16_t val) "%s 0x%04x"
+vfio_pci_emulated_class_code(const char *name, uint32_t val) "%s 0x%06x"
# pci-quirks.c
vfio_quirk_rom_in_denylist(const char *name, uint16_t vid, uint16_t did) "%s %04x:%04x"
diff --git a/hw/vfio/types.h b/hw/vfio/types.h
new file mode 100644
index 0000000..c19334f
--- /dev/null
+++ b/hw/vfio/types.h
@@ -0,0 +1,23 @@
+/*
+ * VFIO types definition
+ *
+ * Copyright Red Hat, Inc. 2025
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#ifndef HW_VFIO_VFIO_TYPES_H
+#define HW_VFIO_VFIO_TYPES_H
+
+/*
+ * TYPE_VFIO_PCI_BASE is an abstract type used to share code
+ * between VFIO implementations that use a kernel driver
+ * with those that use user sockets.
+ */
+#define TYPE_VFIO_PCI_BASE "vfio-pci-base"
+
+#define TYPE_VFIO_PCI "vfio-pci"
+/* TYPE_VFIO_PCI shares struct VFIOPCIDevice. */
+
+#define TYPE_VFIO_PCI_NOHOTPLUG "vfio-pci-nohotplug"
+
+#endif /* HW_VFIO_VFIO_TYPES_H */
diff --git a/hw/vfio/vfio-helpers.h b/hw/vfio/vfio-helpers.h
index 54a327f..ce31758 100644
--- a/hw/vfio/vfio-helpers.h
+++ b/hw/vfio/vfio-helpers.h
@@ -32,4 +32,6 @@ struct vfio_device_info *vfio_get_device_info(int fd);
int vfio_kvm_device_add_fd(int fd, Error **errp);
int vfio_kvm_device_del_fd(int fd, Error **errp);
+bool vfio_arch_wants_loading_config_after_iter(void);
+
#endif /* HW_VFIO_VFIO_HELPERS_H */
diff --git a/hw/vfio/vfio-migration-internal.h b/hw/vfio/vfio-migration-internal.h
index a8b456b..814fbd9 100644
--- a/hw/vfio/vfio-migration-internal.h
+++ b/hw/vfio/vfio-migration-internal.h
@@ -13,7 +13,6 @@
#include <linux/vfio.h>
#endif
-#include "qemu/typedefs.h"
#include "qemu/notify.h"
/*
@@ -32,6 +31,7 @@
#define VFIO_MIG_FLAG_DEV_SETUP_STATE (0xffffffffef100003ULL)
#define VFIO_MIG_FLAG_DEV_DATA_STATE (0xffffffffef100004ULL)
#define VFIO_MIG_FLAG_DEV_INIT_DATA_SENT (0xffffffffef100005ULL)
+#define VFIO_MIG_FLAG_DEV_CONFIG_LOAD_READY (0xffffffffef100006ULL)
typedef struct VFIODevice VFIODevice;
typedef struct VFIOMultifd VFIOMultifd;
generated by cgit v1.1 at 2025-08-02 18:06:42 +0000