6:17 a.m.
Erik Skultety (4):
qemu: reorder PCI slot assignment functions
qemu: move PCI slot assignment for PIIX3, Q35 into a separate function
qemu: Fix auto-adding PCI bridge when all slots are reserved
qemu: Add check for PCI bridge placement if there are too many PCI
devices
src/qemu/qemu_command.c | 265 ++++++++++++++++++++++++++++--------------------
1 file changed, 154 insertions(+), 111 deletions(-)
--
1.9.3
6:17 a.m.
New subject: [libvirt] [PATCH v2 1/4] qemu: reorder PCI slot assignment functions
In previous commit a chunk of code got moved in to a separate static
function qemuValidateDevicePCISlotsChipsets. This function then invokes
chipset specific functions which are defined as static as well. For
these reasons it is necessary to either have a forward declaration or
slightly reorder definitions.
---
src/qemu/qemu_command.c | 194 ++++++++++++++++++++++++------------------------
1 file changed, 98 insertions(+), 96 deletions(-)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 9a2dcec..336a3d3 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1458,102 +1458,6 @@ qemuDomainPCIBusFullyReserved(virDomainPCIAddressBusPtr bus)
return true;
}
-int
-qemuDomainAssignPCIAddresses(virDomainDefPtr def,
- virQEMUCapsPtr qemuCaps,
- virDomainObjPtr obj)
-{
- int ret = -1;
- virDomainPCIAddressSetPtr addrs = NULL;
- qemuDomainObjPrivatePtr priv = NULL;
-
- if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
- int max_idx = -1;
- int nbuses = 0;
- size_t i;
- int rv;
- virDomainPCIConnectFlags flags = VIR_PCI_CONNECT_TYPE_PCI;
-
- for (i = 0; i < def->ncontrollers; i++) {
- if (def->controllers[i]->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI) {
- if ((int) def->controllers[i]->idx > max_idx)
- max_idx = def->controllers[i]->idx;
- }
- }
-
- nbuses = max_idx + 1;
-
- if (nbuses > 0 &&
- virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_PCI_BRIDGE)) {
- virDomainDeviceInfo info;
-
- /* 1st pass to figure out how many PCI bridges we need */
- if (!(addrs = qemuDomainPCIAddressSetCreate(def, nbuses, true)))
- goto cleanup;
- if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
- goto cleanup;
-
- for (i = 0; i < addrs->nbuses; i++) {
- if (!qemuDomainPCIBusFullyReserved(&addrs->buses[i])) {
-
- /* Reserve 1 extra slot for a (potential) bridge */
- if (virDomainPCIAddressReserveNextSlot(addrs, &info, flags) <
0)
- goto cleanup;
- }
- }
-
- for (i = 1; i < addrs->nbuses; i++) {
- virDomainPCIAddressBusPtr bus = &addrs->buses[i];
-
- if ((rv = virDomainDefMaybeAddController(
- def, VIR_DOMAIN_CONTROLLER_TYPE_PCI,
- i, bus->model)) < 0)
- goto cleanup;
- /* If we added a new bridge, we will need one more address */
- if (rv > 0 &&
- virDomainPCIAddressReserveNextSlot(addrs, &info, flags) < 0)
- goto cleanup;
- }
- nbuses = addrs->nbuses;
- virDomainPCIAddressSetFree(addrs);
- addrs = NULL;
-
- } else if (max_idx > 0) {
- virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
- _("PCI bridges are not supported "
- "by this QEMU binary"));
- goto cleanup;
- }
-
- if (!(addrs = qemuDomainPCIAddressSetCreate(def, nbuses, false)))
- goto cleanup;
-
- if (qemuDomainSupportsPCI(def)) {
- if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
- goto cleanup;
- }
- }
-
- if (obj && obj->privateData) {
- priv = obj->privateData;
- if (addrs) {
- /* if this is the live domain object, we persist the PCI addresses*/
- virDomainPCIAddressSetFree(priv->pciaddrs);
- priv->persistentAddrs = 1;
- priv->pciaddrs = addrs;
- addrs = NULL;
- } else {
- priv->persistentAddrs = 0;
- }
- }
-
- ret = 0;
-
- cleanup:
- virDomainPCIAddressSetFree(addrs);
-
- return ret;
-}
int qemuDomainAssignAddresses(virDomainDefPtr def,
virQEMUCapsPtr qemuCaps,
@@ -1971,6 +1875,104 @@ qemuDomainValidateDevicePCISlotsQ35(virDomainDefPtr def,
}
+int
+qemuDomainAssignPCIAddresses(virDomainDefPtr def,
+ virQEMUCapsPtr qemuCaps,
+ virDomainObjPtr obj)
+{
+ int ret = -1;
+ virDomainPCIAddressSetPtr addrs = NULL;
+ qemuDomainObjPrivatePtr priv = NULL;
+
+ if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
+ int max_idx = -1;
+ int nbuses = 0;
+ size_t i;
+ int rv;
+ virDomainPCIConnectFlags flags = VIR_PCI_CONNECT_TYPE_PCI;
+
+ for (i = 0; i < def->ncontrollers; i++) {
+ if (def->controllers[i]->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI) {
+ if ((int) def->controllers[i]->idx > max_idx)
+ max_idx = def->controllers[i]->idx;
+ }
+ }
+
+ nbuses = max_idx + 1;
+
+ if (nbuses > 0 &&
+ virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_PCI_BRIDGE)) {
+ virDomainDeviceInfo info;
+
+ /* 1st pass to figure out how many PCI bridges we need */
+ if (!(addrs = qemuDomainPCIAddressSetCreate(def, nbuses, true)))
+ goto cleanup;
+ if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
+ goto cleanup;
+
+ for (i = 0; i < addrs->nbuses; i++) {
+ if (!qemuDomainPCIBusFullyReserved(&addrs->buses[i])) {
+
+ /* Reserve 1 extra slot for a (potential) bridge */
+ if (virDomainPCIAddressReserveNextSlot(addrs, &info, flags) <
0)
+ goto cleanup;
+ }
+ }
+
+ for (i = 1; i < addrs->nbuses; i++) {
+ virDomainPCIAddressBusPtr bus = &addrs->buses[i];
+
+ if ((rv = virDomainDefMaybeAddController(
+ def, VIR_DOMAIN_CONTROLLER_TYPE_PCI,
+ i, bus->model)) < 0)
+ goto cleanup;
+ /* If we added a new bridge, we will need one more address */
+ if (rv > 0 &&
+ virDomainPCIAddressReserveNextSlot(addrs, &info, flags) < 0)
+ goto cleanup;
+ }
+ nbuses = addrs->nbuses;
+ virDomainPCIAddressSetFree(addrs);
+ addrs = NULL;
+
+ } else if (max_idx > 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("PCI bridges are not supported "
+ "by this QEMU binary"));
+ goto cleanup;
+ }
+
+ if (!(addrs = qemuDomainPCIAddressSetCreate(def, nbuses, false)))
+ goto cleanup;
+
+ if (qemuDomainSupportsPCI(def)) {
+ if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
+ goto cleanup;
+ }
+ }
+
+ if (obj && obj->privateData) {
+ priv = obj->privateData;
+ if (addrs) {
+ /* if this is the live domain object, we persist the PCI addresses*/
+ virDomainPCIAddressSetFree(priv->pciaddrs);
+ priv->persistentAddrs = 1;
+ priv->pciaddrs = addrs;
+ addrs = NULL;
+ } else {
+ priv->persistentAddrs = 0;
+ }
+ }
+
+ ret = 0;
+
+ cleanup:
+ virDomainPCIAddressSetFree(addrs);
+
+ return ret;
+}
+
+
/*
* This assigns static PCI slots to all configured devices.
* The ordering here is chosen to match the ordering used
--
1.9.3
7:38 a.m.
New subject: [libvirt] [PATCH v2 1/4] qemu: reorder PCI slot assignment functions
On 01/23/2015 01:17 PM, Erik Skultety wrote:
In previous commit a chunk of code got moved in to a separate static
function qemuValidateDevicePCISlotsChipsets. This function then invokes
chipset specific functions which are defined as static as well. For
these reasons it is necessary to either have a forward declaration or
slightly reorder definitions.
---
src/qemu/qemu_command.c | 194 ++++++++++++++++++++++++------------------------
1 file changed, 98 insertions(+), 96 deletions(-)
ACK to the patch, this is just code movement.
But the commit message is not accurate anymore. I've reworded it and pushed
the patch.
Jan
7:38 a.m.
New subject: [libvirt] [PATCH v2 1/4] qemu: reorder PCI slot assignment functions
On 01/23/2015 01:17 PM, Erik Skultety wrote:
In previous commit a chunk of code got moved in to a separate static
function qemuValidateDevicePCISlotsChipsets. This function then invokes
chipset specific functions which are defined as static as well. For
these reasons it is necessary to either have a forward declaration or
slightly reorder definitions.
---
src/qemu/qemu_command.c | 194 ++++++++++++++++++++++++------------------------
1 file changed, 98 insertions(+), 96 deletions(-)
ACK to the patch, this is just code movement.
But the commit message is not accurate anymore. I've reworded it and pushed
the patch.
Jan
6:17 a.m.
New subject: [libvirt] [PATCH v2 2/4] qemu: move PCI slot assignment for PIIX3, Q35 into a separate function
In order to be able to test for fully reserved PCI buses, assignment of
PCI slots for integrated devices needs to be moved to a separate function.
This also might be a good preparation if we decide to add support for
other chipsets as well.
---
src/qemu/qemu_command.c | 47 ++++++++++++++++++++++++++++++++---------------
1 file changed, 32 insertions(+), 15 deletions(-)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 336a3d3..457c777 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1874,6 +1874,27 @@ qemuDomainValidateDevicePCISlotsQ35(virDomainDefPtr def,
return ret;
}
+static int
+qemuValidateDevicePCISlotsChipsets(virDomainDefPtr def,
+ virQEMUCapsPtr qemuCaps,
+ virDomainPCIAddressSetPtr addrs)
+{
+ if ((STRPREFIX(def->os.machine, "pc-0.") ||
+ STRPREFIX(def->os.machine, "pc-1.") ||
+ STRPREFIX(def->os.machine, "pc-i440") ||
+ STREQ(def->os.machine, "pc") ||
+ STRPREFIX(def->os.machine, "rhel")) &&
+ qemuValidateDevicePCISlotsPIIX3(def, qemuCaps, addrs) < 0) {
+ return -1;
+ }
+
+ if (qemuDomainMachineIsQ35(def) &&
+ qemuDomainValidateDevicePCISlotsQ35(def, qemuCaps, addrs) < 0) {
+ return -1;
+ }
+
+ return 0;
+}
int
qemuDomainAssignPCIAddresses(virDomainDefPtr def,
@@ -1907,6 +1928,10 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
/* 1st pass to figure out how many PCI bridges we need */
if (!(addrs = qemuDomainPCIAddressSetCreate(def, nbuses, true)))
goto cleanup;
+
+ if (qemuValidateDevicePCISlotsChipsets(def, qemuCaps, addrs) < 0)
+ goto cleanup;
+
if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
goto cleanup;
@@ -1946,6 +1971,9 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
goto cleanup;
if (qemuDomainSupportsPCI(def)) {
+ if (qemuValidateDevicePCISlotsChipsets(def, qemuCaps, addrs) < 0)
+ goto cleanup;
+
if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
goto cleanup;
}
@@ -1990,6 +2018,9 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
* - PIIX3 ISA bridge, IDE controller, something else unknown, USB controller (slot 1)
* - Video (slot 2)
*
+ * - These integrated devices were already added by
+ * qemuValidateDevicePCISlotsChipsets invoked right before this function
+ *
* Incrementally assign slots from 3 onwards:
*
* - Net
@@ -2007,27 +2038,13 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
*/
int
qemuAssignDevicePCISlots(virDomainDefPtr def,
- virQEMUCapsPtr qemuCaps,
+ virQEMUCapsPtr qemuCaps ATTRIBUTE_UNUSED,
virDomainPCIAddressSetPtr addrs)
{
size_t i, j;
virDomainPCIConnectFlags flags;
virDevicePCIAddress tmp_addr;
- if ((STRPREFIX(def->os.machine, "pc-0.") ||
- STRPREFIX(def->os.machine, "pc-1.") ||
- STRPREFIX(def->os.machine, "pc-i440") ||
- STREQ(def->os.machine, "pc") ||
- STRPREFIX(def->os.machine, "rhel")) &&
- qemuValidateDevicePCISlotsPIIX3(def, qemuCaps, addrs) < 0) {
- goto error;
- }
-
- if (qemuDomainMachineIsQ35(def) &&
- qemuDomainValidateDevicePCISlotsQ35(def, qemuCaps, addrs) < 0) {
- goto error;
- }
-
/* PCI controllers */
for (i = 0; i < def->ncontrollers; i++) {
if (def->controllers[i]->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI) {
--
1.9.3
7:38 a.m.
New subject: [libvirt] [PATCH v2 2/4] qemu: move PCI slot assignment for PIIX3, Q35 into a separate function
On 01/23/2015 01:17 PM, Erik Skultety wrote:
In order to be able to test for fully reserved PCI buses, assignment
of
PCI slots for integrated devices needs to be moved to a separate function.
This also might be a good preparation if we decide to add support for
other chipsets as well.
---
src/qemu/qemu_command.c | 47 ++++++++++++++++++++++++++++++++---------------
1 file changed, 32 insertions(+), 15 deletions(-)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 336a3d3..457c777 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1874,6 +1874,27 @@ qemuDomainValidateDevicePCISlotsQ35(virDomainDefPtr def,
return ret;
}
+static int
+qemuValidateDevicePCISlotsChipsets(virDomainDefPtr def,
+ virQEMUCapsPtr qemuCaps,
+ virDomainPCIAddressSetPtr addrs)
+{
+ if ((STRPREFIX(def->os.machine, "pc-0.") ||
+ STRPREFIX(def->os.machine, "pc-1.") ||
+ STRPREFIX(def->os.machine, "pc-i440") ||
+ STREQ(def->os.machine, "pc") ||
+ STRPREFIX(def->os.machine, "rhel")) &&
+ qemuValidateDevicePCISlotsPIIX3(def, qemuCaps, addrs) < 0) {
+ return -1;
+ }
+
+ if (qemuDomainMachineIsQ35(def) &&
+ qemuDomainValidateDevicePCISlotsQ35(def, qemuCaps, addrs) < 0) {
+ return -1;
+ }
+
+ return 0;
+}
int
qemuDomainAssignPCIAddresses(virDomainDefPtr def,
@@ -1907,6 +1928,10 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
/* 1st pass to figure out how many PCI bridges we need */
if (!(addrs = qemuDomainPCIAddressSetCreate(def, nbuses, true)))
goto cleanup;
+
+ if (qemuValidateDevicePCISlotsChipsets(def, qemuCaps, addrs) < 0)
+ goto cleanup;
+
if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
goto cleanup;
@@ -1946,6 +1971,9 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
goto cleanup;
if (qemuDomainSupportsPCI(def)) {
+ if (qemuValidateDevicePCISlotsChipsets(def, qemuCaps, addrs) < 0)
+ goto cleanup;
+
if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
goto cleanup;
}
@@ -1990,6 +2018,9 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
* - PIIX3 ISA bridge, IDE controller, something else unknown, USB controller (slot 1)
* - Video (slot 2)
*
+ * - These integrated devices were already added by
+ * qemuValidateDevicePCISlotsChipsets invoked right before this function
+ *
* Incrementally assign slots from 3 onwards:
*
* - Net
@@ -2007,27 +2038,13 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
*/
int
qemuAssignDevicePCISlots(virDomainDefPtr def,
- virQEMUCapsPtr qemuCaps,
+ virQEMUCapsPtr qemuCaps ATTRIBUTE_UNUSED,
We can just remove the parameter if it's not used.
ACK and pushed with that change.
Jan
6:17 a.m.
New subject: [libvirt] [PATCH v2 3/4] qemu: Fix auto-adding PCI bridge when all slots are reserved
Commit 93c8ca tried to fix the issue with auto-adding of a PCI bridge
controller, but didn't work properly in all scenarios.
This patch provides a better fix of the issue when all slots on a PCI bus
are reserved by devices with user specified addresses and no additional
bridges need to be created.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1132900
---
src/qemu/qemu_command.c | 23 ++++++++++++++---------
1 file changed, 14 insertions(+), 9 deletions(-)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 457c777..a3dedbf 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1910,6 +1910,8 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
int nbuses = 0;
size_t i;
int rv;
+ bool buses_reserved = true;
+
virDomainPCIConnectFlags flags = VIR_PCI_CONNECT_TYPE_PCI;
for (i = 0; i < def->ncontrollers; i++) {
@@ -1932,18 +1934,21 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
if (qemuValidateDevicePCISlotsChipsets(def, qemuCaps, addrs) < 0)
goto cleanup;
- if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
- goto cleanup;
-
for (i = 0; i < addrs->nbuses; i++) {
- if (!qemuDomainPCIBusFullyReserved(&addrs->buses[i])) {
-
- /* Reserve 1 extra slot for a (potential) bridge */
- if (virDomainPCIAddressReserveNextSlot(addrs, &info, flags) <
0)
- goto cleanup;
- }
+ if (!qemuDomainPCIBusFullyReserved(&addrs->buses[i]))
+ buses_reserved = false;
}
+ /* Reserve 1 extra slot for a (potential) bridge only if buses
+ * are not fully reserved yet
+ */
+ if (!buses_reserved &&
+ virDomainPCIAddressReserveNextSlot(addrs, &info, flags) < 0)
+ goto cleanup;
+
+ if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
+ goto cleanup;
+
for (i = 1; i < addrs->nbuses; i++) {
virDomainPCIAddressBusPtr bus = &addrs->buses[i];
--
1.9.3
7:38 a.m.
New subject: [libvirt] [PATCH v2 3/4] qemu: Fix auto-adding PCI bridge when all slots are reserved
On 01/23/2015 01:17 PM, Erik Skultety wrote:
Commit 93c8ca tried to fix the issue with auto-adding of a PCI
bridge
controller, but didn't work properly in all scenarios.
This patch provides a better fix of the issue when all slots on a PCI bus
are reserved by devices with user specified addresses and no additional
bridges need to be created.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1132900
---
src/qemu/qemu_command.c | 23 ++++++++++++++---------
1 file changed, 14 insertions(+), 9 deletions(-)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 457c777..a3dedbf 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1910,6 +1910,8 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
int nbuses = 0;
size_t i;
int rv;
+ bool buses_reserved = true;
+
virDomainPCIConnectFlags flags = VIR_PCI_CONNECT_TYPE_PCI;
for (i = 0; i < def->ncontrollers; i++) {
@@ -1932,18 +1934,21 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
if (qemuValidateDevicePCISlotsChipsets(def, qemuCaps, addrs) < 0)
goto cleanup;
- if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
- goto cleanup;
-
for (i = 0; i < addrs->nbuses; i++) {
- if (!qemuDomainPCIBusFullyReserved(&addrs->buses[i])) {
-
- /* Reserve 1 extra slot for a (potential) bridge */
- if (virDomainPCIAddressReserveNextSlot(addrs, &info, flags) <
0)
- goto cleanup;
- }
+ if (!qemuDomainPCIBusFullyReserved(&addrs->buses[i]))
+ buses_reserved = false;
}
+ /* Reserve 1 extra slot for a (potential) bridge only if buses
Indentation is off here.
+ * are not fully reserved yet
+ */
+ if (!buses_reserved &&
+ virDomainPCIAddressReserveNextSlot(addrs, &info, flags) < 0)
+ goto cleanup;
+
+ if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
+ goto cleanup;
+
for (i = 1; i < addrs->nbuses; i++) {
virDomainPCIAddressBusPtr bus = &addrs->buses[i];
ACK and pushed.
Jan
6:17 a.m.
New subject: [libvirt] [PATCH v2 4/4] qemu: Add check for PCI bridge placement if there are too many PCI devices
Previous patch of this series fixed the issue with adding a new PCI bridge
when all the slots were reserved by devices with user specified addresses.
In case there are still some PCI devices waiting to get a slot reserved
by qemuAssignDevicePCISlots, this means a new bus needs to be
created along with a corresponding bridge controller. By adding an
additional check, this scenario now results in a reasonable error
instead of generating wrong qemu command line.
---
src/qemu/qemu_command.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index a3dedbf..870771f 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1982,6 +1982,25 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
goto cleanup;
}
+
+ for (i = 0; i < def->ncontrollers; i++) {
+ /* check if every PCI bridge controller's ID is greater than
+ * the bus it is placed onto
+ */
+ virDomainControllerDefPtr cont = def->controllers[i];
+ int idx = cont->idx;
+ int bus = cont->info.addr.pci.bus;
+ if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI &&
+ cont->model == VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE &&
+ idx <= bus) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("failed to create PCI bridge "
+ "on bus %d: too many devices with fixed "
+ "addresses"),
+ bus);
+ goto cleanup;
+ }
+ }
}
if (obj && obj->privateData) {
--
1.9.3
7:38 a.m.
New subject: [libvirt] [PATCH v2 4/4] qemu: Add check for PCI bridge placement if there are too many PCI devices
On 01/23/2015 01:17 PM, Erik Skultety wrote:
Previous patch of this series fixed the issue with adding a new PCI
bridge
when all the slots were reserved by devices with user specified addresses.
In case there are still some PCI devices waiting to get a slot reserved
by qemuAssignDevicePCISlots, this means a new bus needs to be
created along with a corresponding bridge controller. By adding an
additional check, this scenario now results in a reasonable error
instead of generating wrong qemu command line.
---
src/qemu/qemu_command.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
ACK
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index a3dedbf..870771f 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1982,6 +1982,25 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
goto cleanup;
}
+
+ for (i = 0; i < def->ncontrollers; i++) {
+ /* check if every PCI bridge controller's ID is greater than
+ * the bus it is placed onto
+ */
+ virDomainControllerDefPtr cont = def->controllers[i];
+ int idx = cont->idx;
+ int bus = cont->info.addr.pci.bus;
+ if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI &&
+ cont->model == VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE &&
+ idx <= bus) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("failed to create PCI bridge "
+ "on bus %d: too many devices with fixed "
+ "addresses"),
+ bus);
+ goto cleanup;
+ }
+ }
}
if (obj && obj->privateData) {
I have moved the check into if (qemuDomainSupportsPCI) and pushed the patch.
Jan
7:54 a.m.
New subject: [libvirt] [PATCH v2 4/4] qemu: Add check for PCI bridge placement if there are too many PCI devices
On 01/23/2015 02:38 PM, Ján Tomko wrote:
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index a3dedbf..870771f 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -1982,6 +1982,25 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
> if (qemuAssignDevicePCISlots(def, qemuCaps, addrs) < 0)
> goto cleanup;
> }
> +
> + for (i = 0; i < def->ncontrollers; i++) {
> + /* check if every PCI bridge controller's ID is greater than
> + * the bus it is placed onto
> + */
> + virDomainControllerDefPtr cont = def->controllers[i];
> + int idx = cont->idx;
> + int bus = cont->info.addr.pci.bus;
> + if (cont->type == VIR_DOMAIN_CONTROLLER_TYPE_PCI &&
> + cont->model == VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE &&
> + idx <= bus) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
> + _("failed to create PCI bridge "
> + "on bus %d: too many devices with fixed
"
> + "addresses"),
> + bus);
> + goto cleanup;
> + }
> + }
> }
>
> if (obj && obj->privateData) {
>
I have moved the check into if (qemuDomainSupportsPCI) and pushed the patch.
Jan
Thank you.
Erik
3584
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3584
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10 comments
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participants (2)
-
Erik Skultety -
Ján Tomko