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[Qemu-block] [PATCH v2 02/21] sysbus: Set user_creatable=false by defaul
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From: |
Eduardo Habkost |
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Subject: |
[Qemu-block] [PATCH v2 02/21] sysbus: Set user_creatable=false by default on TYPE_SYS_BUS_DEVICE |
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Date: |
Tue, 4 Apr 2017 17:24:10 -0300 |
commit 33cd52b5d7b9adfd009e95f07e6c64dd88ae2a31 unset
cannot_instantiate_with_device_add_yet in TYPE_SYSBUS, making all
sysbus devices appear on "-device help" and lack the "no-user"
flag in "info qdm".
To fix this, we can set user_creatable=false by default on
TYPE_SYS_BUS_DEVICE, but this requires setting
user_creatable=true explicitly on the sysbus devices that
actually work with -device.
Fortunately today we have just a few has_dynamic_sysbus=1
machines: virt, pc-q35-*, ppce500, and spapr.
virt, ppce500, and spapr have extra checks to ensure just a few
device types can be instantiated:
* virt supports only TYPE_VFIO_CALXEDA_XGMAC, TYPE_VFIO_AMD_XGBE.
* ppce500 supports only TYPE_ETSEC_COMMON.
* spapr supports only TYPE_SPAPR_PCI_HOST_BRIDGE.
This patch sets user_creatable=true explicitly on those 4 device
classes.
Now, the more complex cases:
pc-q35-*: q35 has no sysbus device whitelist yet (which is a
separate bug). We are in the process of fixing it and building a
sysbus whitelist on q35, but in the meantime we can fix the
"-device help" and "info qdm" bugs mentioned above. Also, despite
not being strictly necessary for fixing the q35 bug, reducing the
list of user_creatable=true devices will help us be more
confident when building the q35 whitelist.
xen: We also have a hack at xen_set_dynamic_sysbus(), that sets
has_dynamic_sysbus=true at runtime when using the Xen
accelerator. This hack is only used to allow xen-backend devices
to be dynamically plugged/unplugged.
This means today we can use -device with the following 22 device
types, that are the ones compiled into the qemu-system-x86_64 and
qemu-system-i386 binaries:
* allwinner-ahci
* amd-iommu
* cfi.pflash01
* esp
* fw_cfg_io
* fw_cfg_mem
* generic-sdhci
* hpet
* intel-iommu
* ioapic
* isabus-bridge
* kvmclock
* kvm-ioapic
* kvmvapic
* SUNW,fdtwo
* sysbus-ahci
* sysbus-fdc
* sysbus-ohci
* unimplemented-device
* virtio-mmio
* xen-backend
* xen-sysdev
This patch adds user_creatable=true explicitly to those devices,
temporarily, just to keep 100% compatibility with existing
behavior of q35. Subsequent patches will remove
user_creatable=true from the devices that are really not meant to
user-creatable on any machine, and remove the FIXME comment from
the ones that are really supposed to be user-creatable. This is
being done in separate patches because we still don't have an
obvious list of devices that will be whitelisted by q35, and I
would like to get each device reviewed individually.
Cc: Alexander Graf <address@hidden>
Cc: Alex Williamson <address@hidden>
Cc: Alistair Francis <address@hidden>
Cc: Beniamino Galvani <address@hidden>
Cc: Christian Borntraeger <address@hidden>
Cc: Cornelia Huck <address@hidden>
Cc: David Gibson <address@hidden>
Cc: "Edgar E. Iglesias" <address@hidden>
Cc: Eduardo Habkost <address@hidden>
Cc: Frank Blaschka <address@hidden>
Cc: Gabriel L. Somlo <address@hidden>
Cc: Gerd Hoffmann <address@hidden>
Cc: Igor Mammedov <address@hidden>
Cc: Jason Wang <address@hidden>
Cc: John Snow <address@hidden>
Cc: Juergen Gross <address@hidden>
Cc: Kevin Wolf <address@hidden>
Cc: Laszlo Ersek <address@hidden>
Cc: Marcel Apfelbaum <address@hidden>
Cc: Markus Armbruster <address@hidden>
Cc: Max Reitz <address@hidden>
Cc: "Michael S. Tsirkin" <address@hidden>
Cc: Paolo Bonzini <address@hidden>
Cc: Peter Maydell <address@hidden>
Cc: Pierre Morel <address@hidden>
Cc: Prasad J Pandit <address@hidden>
Cc: address@hidden
Cc: address@hidden
Cc: address@hidden
Cc: Richard Henderson <address@hidden>
Cc: Rob Herring <address@hidden>
Cc: Shannon Zhao <address@hidden>
Cc: address@hidden
Cc: Thomas Huth <address@hidden>
Cc: Yi Min Zhao <address@hidden>
Signed-off-by: Eduardo Habkost <address@hidden>
---
Changes v1 -> v2:
* Rewrite commit message: don't pretend we are actually fixing
the q35 issue. We're just fixing "info qdm" and "-device help".
Making it easier to fix q35 is just a nice side-effect.
* Rewrite FIXME comments to make it clear that we just have
user_creatable=true because we don't know yet if the device
should be in the q35 whitelist
---
hw/block/fdc.c | 10 ++++++++++
hw/block/pflash_cfi01.c | 5 +++++
hw/core/sysbus.c | 11 +++++++++++
hw/i386/amd_iommu.c | 5 +++++
hw/i386/intel_iommu.c | 5 +++++
hw/i386/kvm/clock.c | 5 +++++
hw/i386/kvm/ioapic.c | 5 +++++
hw/i386/kvmvapic.c | 5 +++++
hw/ide/ahci.c | 10 ++++++++++
hw/intc/ioapic.c | 5 +++++
hw/isa/isa-bus.c | 5 +++++
hw/misc/unimp.c | 5 +++++
hw/net/fsl_etsec/etsec.c | 2 ++
hw/nvram/fw_cfg.c | 10 ++++++++++
hw/ppc/spapr_pci.c | 2 ++
hw/scsi/esp.c | 5 +++++
hw/sd/sdhci.c | 5 +++++
hw/timer/hpet.c | 5 +++++
hw/usb/hcd-ohci.c | 5 +++++
hw/vfio/amd-xgbe.c | 2 ++
hw/vfio/calxeda-xgmac.c | 2 ++
hw/virtio/virtio-mmio.c | 5 +++++
hw/xen/xen_backend.c | 10 ++++++++++
23 files changed, 129 insertions(+)
diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index a328693d15..3d05565628 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -2880,6 +2880,11 @@ static void sysbus_fdc_class_init(ObjectClass *klass,
void *data)
dc->props = sysbus_fdc_properties;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo sysbus_fdc_info = {
@@ -2906,6 +2911,11 @@ static void sun4m_fdc_class_init(ObjectClass *klass,
void *data)
dc->props = sun4m_fdc_properties;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo sun4m_fdc_info = {
diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
index 594d4cf6fe..ef71956433 100644
--- a/hw/block/pflash_cfi01.c
+++ b/hw/block/pflash_cfi01.c
@@ -927,6 +927,11 @@ static void pflash_cfi01_class_init(ObjectClass *klass,
void *data)
dc->props = pflash_cfi01_properties;
dc->vmsd = &vmstate_pflash;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
diff --git a/hw/core/sysbus.c b/hw/core/sysbus.c
index c0f560b289..6a2eec8dd0 100644
--- a/hw/core/sysbus.c
+++ b/hw/core/sysbus.c
@@ -326,6 +326,17 @@ static void sysbus_device_class_init(ObjectClass *klass,
void *data)
DeviceClass *k = DEVICE_CLASS(klass);
k->init = sysbus_device_init;
k->bus_type = TYPE_SYSTEM_BUS;
+ /*
+ * device_add plugs devices into suitable bus. For "real" buses,
+ * that actually connects the device. For sysbus, the connections
+ * need to be made separately, and device_add can't do that. The
+ * device would be left unconnected, and will probably not work
+ *
+ * However, a few machines and a few devices can handle a few sysbus
+ * devices. In this case, the device subclass needs to override
+ * it and set user_creatable=true.
+ */
+ k->user_creatable = false;
}
static const TypeInfo sysbus_device_type_info = {
diff --git a/hw/i386/amd_iommu.c b/hw/i386/amd_iommu.c
index f86a40aa30..7b92c8c15a 100644
--- a/hw/i386/amd_iommu.c
+++ b/hw/i386/amd_iommu.c
@@ -1186,6 +1186,11 @@ static void amdvi_class_init(ObjectClass *klass, void*
data)
dc->vmsd = &vmstate_amdvi;
dc->hotpluggable = false;
dc_class->realize = amdvi_realize;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo amdvi = {
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 22d8226e43..d71d52c328 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -2601,6 +2601,11 @@ static void vtd_class_init(ObjectClass *klass, void
*data)
dc->hotpluggable = false;
x86_class->realize = vtd_realize;
x86_class->int_remap = vtd_int_remap;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo vtd_info = {
diff --git a/hw/i386/kvm/clock.c b/hw/i386/kvm/clock.c
index 13eca374cd..7665bef999 100644
--- a/hw/i386/kvm/clock.c
+++ b/hw/i386/kvm/clock.c
@@ -286,6 +286,11 @@ static void kvmclock_class_init(ObjectClass *klass, void
*data)
dc->realize = kvmclock_realize;
dc->vmsd = &kvmclock_vmsd;
dc->props = kvmclock_properties;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo kvmclock_info = {
diff --git a/hw/i386/kvm/ioapic.c b/hw/i386/kvm/ioapic.c
index 98ca480792..348c405180 100644
--- a/hw/i386/kvm/ioapic.c
+++ b/hw/i386/kvm/ioapic.c
@@ -167,6 +167,11 @@ static void kvm_ioapic_class_init(ObjectClass *klass, void
*data)
k->post_load = kvm_ioapic_put;
dc->reset = kvm_ioapic_reset;
dc->props = kvm_ioapic_properties;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo kvm_ioapic_info = {
diff --git a/hw/i386/kvmvapic.c b/hw/i386/kvmvapic.c
index 82a49556af..45f6267c93 100644
--- a/hw/i386/kvmvapic.c
+++ b/hw/i386/kvmvapic.c
@@ -856,6 +856,11 @@ static void vapic_class_init(ObjectClass *klass, void
*data)
dc->reset = vapic_reset;
dc->vmsd = &vmstate_vapic;
dc->realize = vapic_realize;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo vapic_type = {
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c
index f60826d6e0..7f10cda354 100644
--- a/hw/ide/ahci.c
+++ b/hw/ide/ahci.c
@@ -1721,6 +1721,11 @@ static void sysbus_ahci_class_init(ObjectClass *klass,
void *data)
dc->props = sysbus_ahci_properties;
dc->reset = sysbus_ahci_reset;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo sysbus_ahci_info = {
@@ -1815,6 +1820,11 @@ static void allwinner_ahci_class_init(ObjectClass
*klass, void *data)
DeviceClass *dc = DEVICE_CLASS(klass);
dc->vmsd = &vmstate_allwinner_ahci;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo allwinner_ahci_info = {
diff --git a/hw/intc/ioapic.c b/hw/intc/ioapic.c
index 37c4386ae3..f9e4f77def 100644
--- a/hw/intc/ioapic.c
+++ b/hw/intc/ioapic.c
@@ -448,6 +448,11 @@ static void ioapic_class_init(ObjectClass *klass, void
*data)
k->post_load = ioapic_update_kvm_routes;
dc->reset = ioapic_reset_common;
dc->props = ioapic_properties;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo ioapic_info = {
diff --git a/hw/isa/isa-bus.c b/hw/isa/isa-bus.c
index 348e0eab9d..ad4ac3b4f6 100644
--- a/hw/isa/isa-bus.c
+++ b/hw/isa/isa-bus.c
@@ -221,6 +221,11 @@ static void isabus_bridge_class_init(ObjectClass *klass,
void *data)
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
dc->fw_name = "isa";
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo isabus_bridge_info = {
diff --git a/hw/misc/unimp.c b/hw/misc/unimp.c
index bcbb585888..e446c1d652 100644
--- a/hw/misc/unimp.c
+++ b/hw/misc/unimp.c
@@ -90,6 +90,11 @@ static void unimp_class_init(ObjectClass *klass, void *data)
dc->realize = unimp_realize;
dc->props = unimp_properties;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo unimp_info = {
diff --git a/hw/net/fsl_etsec/etsec.c b/hw/net/fsl_etsec/etsec.c
index aa2b0d5a85..9da1932970 100644
--- a/hw/net/fsl_etsec/etsec.c
+++ b/hw/net/fsl_etsec/etsec.c
@@ -416,6 +416,8 @@ static void etsec_class_init(ObjectClass *klass, void *data)
dc->realize = etsec_realize;
dc->reset = etsec_reset;
dc->props = etsec_properties;
+ /* Supported by ppce500 machine */
+ dc->user_creatable = true;
}
static TypeInfo etsec_info = {
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
index 316fca9bc1..7993aea792 100644
--- a/hw/nvram/fw_cfg.c
+++ b/hw/nvram/fw_cfg.c
@@ -1101,6 +1101,11 @@ static void fw_cfg_io_class_init(ObjectClass *klass,
void *data)
dc->realize = fw_cfg_io_realize;
dc->props = fw_cfg_io_properties;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo fw_cfg_io_info = {
@@ -1167,6 +1172,11 @@ static void fw_cfg_mem_class_init(ObjectClass *klass,
void *data)
dc->realize = fw_cfg_mem_realize;
dc->props = fw_cfg_mem_properties;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo fw_cfg_mem_info = {
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index 98c52e411f..cae2b31230 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -1990,6 +1990,8 @@ static void spapr_phb_class_init(ObjectClass *klass, void
*data)
dc->props = spapr_phb_properties;
dc->reset = spapr_phb_reset;
dc->vmsd = &vmstate_spapr_pci;
+ /* Supported by TYPE_SPAPR_MACHINE */
+ dc->user_creatable = true;
set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
hp->plug = spapr_phb_hot_plug_child;
hp->unplug = spapr_phb_hot_unplug_child;
diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c
index eee831efeb..7bdc1e1b99 100644
--- a/hw/scsi/esp.c
+++ b/hw/scsi/esp.c
@@ -728,6 +728,11 @@ static void sysbus_esp_class_init(ObjectClass *klass, void
*data)
dc->reset = sysbus_esp_hard_reset;
dc->vmsd = &vmstate_sysbus_esp_scsi;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo sysbus_esp_info = {
diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
index 6d6a791ee9..dbf61fccb8 100644
--- a/hw/sd/sdhci.c
+++ b/hw/sd/sdhci.c
@@ -1360,6 +1360,11 @@ static void sdhci_sysbus_class_init(ObjectClass *klass,
void *data)
dc->props = sdhci_sysbus_properties;
dc->realize = sdhci_sysbus_realize;
dc->reset = sdhci_poweron_reset;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo sdhci_sysbus_info = {
diff --git a/hw/timer/hpet.c b/hw/timer/hpet.c
index a2c18b30c3..4dcbd5bb3d 100644
--- a/hw/timer/hpet.c
+++ b/hw/timer/hpet.c
@@ -771,6 +771,11 @@ static void hpet_device_class_init(ObjectClass *klass,
void *data)
dc->reset = hpet_reset;
dc->vmsd = &vmstate_hpet;
dc->props = hpet_device_properties;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo hpet_device_info = {
diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c
index 3ada35e954..18b31022a7 100644
--- a/hw/usb/hcd-ohci.c
+++ b/hw/usb/hcd-ohci.c
@@ -2159,6 +2159,11 @@ static void ohci_sysbus_class_init(ObjectClass *klass,
void *data)
dc->desc = "OHCI USB Controller";
dc->props = ohci_sysbus_properties;
dc->reset = usb_ohci_reset_sysbus;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo ohci_sysbus_info = {
diff --git a/hw/vfio/amd-xgbe.c b/hw/vfio/amd-xgbe.c
index 2c60310cf9..fab196cebf 100644
--- a/hw/vfio/amd-xgbe.c
+++ b/hw/vfio/amd-xgbe.c
@@ -38,6 +38,8 @@ static void vfio_amd_xgbe_class_init(ObjectClass *klass, void
*data)
dc->realize = amd_xgbe_realize;
dc->desc = "VFIO AMD XGBE";
dc->vmsd = &vfio_platform_amd_xgbe_vmstate;
+ /* Supported by TYPE_VIRT_MACHINE */
+ dc->user_creatable = true;
}
static const TypeInfo vfio_amd_xgbe_dev_info = {
diff --git a/hw/vfio/calxeda-xgmac.c b/hw/vfio/calxeda-xgmac.c
index bb15d588e5..7bb17af7ad 100644
--- a/hw/vfio/calxeda-xgmac.c
+++ b/hw/vfio/calxeda-xgmac.c
@@ -38,6 +38,8 @@ static void vfio_calxeda_xgmac_class_init(ObjectClass *klass,
void *data)
dc->realize = calxeda_xgmac_realize;
dc->desc = "VFIO Calxeda XGMAC";
dc->vmsd = &vfio_platform_calxeda_xgmac_vmstate;
+ /* Supported by TYPE_VIRT_MACHINE */
+ dc->user_creatable = true;
}
static const TypeInfo vfio_calxeda_xgmac_dev_info = {
diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c
index 5807aa87fe..6491a771ff 100644
--- a/hw/virtio/virtio-mmio.c
+++ b/hw/virtio/virtio-mmio.c
@@ -450,6 +450,11 @@ static void virtio_mmio_class_init(ObjectClass *klass,
void *data)
dc->reset = virtio_mmio_reset;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
dc->props = virtio_mmio_properties;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo virtio_mmio_info = {
diff --git a/hw/xen/xen_backend.c b/hw/xen/xen_backend.c
index 6c21c37d68..b39dce4cab 100644
--- a/hw/xen/xen_backend.c
+++ b/hw/xen/xen_backend.c
@@ -618,6 +618,11 @@ static void xendev_class_init(ObjectClass *klass, void
*data)
dc->props = xendev_properties;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo xendev_type_info = {
@@ -661,6 +666,11 @@ static void xen_sysdev_class_init(ObjectClass *klass, void
*data)
k->init = xen_sysdev_init;
dc->props = xen_sysdev_properties;
dc->bus_type = TYPE_XENSYSBUS;
+ /*
+ * FIXME: Set only because we are not sure yet if this device
+ * will be outside the q35 sysbus whitelist.
+ */
+ dc->user_creatable = true;
}
static const TypeInfo xensysdev_info = {
--
2.11.0.259.g40922b1
- [Qemu-block] [PATCH v2 02/21] sysbus: Set user_creatable=false by default on TYPE_SYS_BUS_DEVICE,
Eduardo Habkost <=