[libvirt] [PATCH 5/6] lib: Format PCI address differently
Michal Privoznik
mprivozn at redhat.com
Wed Jul 31 08:32:23 UTC 2019
Currently, the way we format PCI address is using printf-s
precision, e.g. "%.4x". This works if we don't want to print any
value outside of bounds (which is usually the case). However,
turns out, PCI domain can be 0x10000 which doesn't work well with
our format strings. However, if we change the format string to
"%04x" then we still pad small values with zeroes but also we are
able to print values that are larger than four digits. In fact,
this format string used by kernel to print a PCI address:
"%04x:%02x:%02x.%d"
The other three format strings (for bus, device and function) are
changed too, so that we use the same format string as kernel.
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
src/conf/device_conf.c | 4 ++--
src/conf/domain_addr.c | 10 +++++-----
src/conf/domain_conf.c | 4 ++--
src/conf/node_device_conf.c | 12 ++++++------
src/util/virpci.h | 2 +-
tools/virsh-domain.c | 4 ++--
6 files changed, 18 insertions(+), 18 deletions(-)
diff --git a/src/conf/device_conf.c b/src/conf/device_conf.c
index b28f30dfc5..4c57f0995f 100644
--- a/src/conf/device_conf.c
+++ b/src/conf/device_conf.c
@@ -293,8 +293,8 @@ virPCIDeviceAddressFormat(virBufferPtr buf,
virPCIDeviceAddress addr,
bool includeTypeInAddr)
{
- virBufferAsprintf(buf, "<address %sdomain='0x%.4x' bus='0x%.2x' "
- "slot='0x%.2x' function='0x%.1x'/>\n",
+ virBufferAsprintf(buf, "<address %sdomain='0x%04x' bus='0x%02x' "
+ "slot='0x%02x' function='0x%d'/>\n",
includeTypeInAddr ? "type='pci' " : "",
addr.domain,
addr.bus,
diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index 04c4e6d7e1..4e02c43375 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -868,7 +868,7 @@ virDomainPCIAddressReserveAddrInternal(virDomainPCIAddressSetPtr addrs,
/* The first device decides the isolation group for the
* entire bus */
bus->isolationGroup = isolationGroup;
- VIR_DEBUG("PCI bus %.4x:%.2x assigned isolation group %u because of "
+ VIR_DEBUG("PCI bus %04x:%02x assigned isolation group %u because of "
"first device %s",
addr->domain, addr->bus, isolationGroup, addrStr);
} else if (bus->isolationGroup != isolationGroup && fromConfig) {
@@ -879,7 +879,7 @@ virDomainPCIAddressReserveAddrInternal(virDomainPCIAddressSetPtr addrs,
* back to the default (because at that point isolation can't
* be guaranteed anymore) */
bus->isolationGroup = 0;
- VIR_DEBUG("PCI bus %.4x:%.2x assigned isolation group %u because of "
+ VIR_DEBUG("PCI bus %04x:%02x assigned isolation group %u because of "
"user assigned address %s",
addr->domain, addr->bus, isolationGroup, addrStr);
}
@@ -1114,7 +1114,7 @@ virDomainPCIAddressFindUnusedFunctionOnBus(virDomainPCIAddressBusPtr bus,
if (!virDomainPCIAddressFlagsCompatible(searchAddr, addrStr, bus->flags,
flags, false, false)) {
- VIR_DEBUG("PCI bus %.4x:%.2x is not compatible with the device",
+ VIR_DEBUG("PCI bus %04x:%02x is not compatible with the device",
searchAddr->domain, searchAddr->bus);
} else {
while (searchAddr->slot <= bus->maxSlot) {
@@ -1150,7 +1150,7 @@ virDomainPCIAddressFindUnusedFunctionOnBus(virDomainPCIAddressBusPtr bus,
}
}
- VIR_DEBUG("PCI slot %.4x:%.2x:%.2x already in use",
+ VIR_DEBUG("PCI slot %04x:%02x:%02x already in use",
searchAddr->domain, searchAddr->bus, searchAddr->slot);
searchAddr->slot++;
}
@@ -1248,7 +1248,7 @@ virDomainPCIAddressGetNextAddr(virDomainPCIAddressSetPtr addrs,
return -1;
success:
- VIR_DEBUG("Found free PCI slot %.4x:%.2x:%.2x",
+ VIR_DEBUG("Found free PCI slot %04x:%02x:%02x",
a.domain, a.bus, a.slot);
*next_addr = a;
return 0;
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index b5ab2bca93..aadb8a9162 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -7091,8 +7091,8 @@ virDomainDeviceInfoFormat(virBufferPtr buf,
switch ((virDomainDeviceAddressType) info->type) {
case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI:
if (!virPCIDeviceAddressIsEmpty(&info->addr.pci)) {
- virBufferAsprintf(&attrBuf, " domain='0x%.4x' bus='0x%.2x' "
- "slot='0x%.2x' function='0x%.1x'",
+ virBufferAsprintf(&attrBuf, " domain='0x%04x' bus='0x%02x' "
+ "slot='0x%02x' function='0x%d'",
info->addr.pci.domain,
info->addr.pci.bus,
info->addr.pci.slot,
diff --git a/src/conf/node_device_conf.c b/src/conf/node_device_conf.c
index 4ef92d5129..e51371de89 100644
--- a/src/conf/node_device_conf.c
+++ b/src/conf/node_device_conf.c
@@ -239,8 +239,8 @@ virNodeDeviceCapPCIDefFormat(virBufferPtr buf,
virBufferAddLit(buf, "<capability type='phys_function'>\n");
virBufferAdjustIndent(buf, 2);
virBufferAsprintf(buf,
- "<address domain='0x%.4x' bus='0x%.2x' "
- "slot='0x%.2x' function='0x%.1x'/>\n",
+ "<address domain='0x%04x' bus='0x%02x' "
+ "slot='0x%02x' function='0x%d'/>\n",
data->pci_dev.physical_function->domain,
data->pci_dev.physical_function->bus,
data->pci_dev.physical_function->slot,
@@ -260,8 +260,8 @@ virNodeDeviceCapPCIDefFormat(virBufferPtr buf,
virBufferAdjustIndent(buf, 2);
for (i = 0; i < data->pci_dev.num_virtual_functions; i++) {
virBufferAsprintf(buf,
- "<address domain='0x%.4x' bus='0x%.2x' "
- "slot='0x%.2x' function='0x%.1x'/>\n",
+ "<address domain='0x%04x' bus='0x%02x' "
+ "slot='0x%02x' function='0x%d'/>\n",
data->pci_dev.virtual_functions[i]->domain,
data->pci_dev.virtual_functions[i]->bus,
data->pci_dev.virtual_functions[i]->slot,
@@ -302,8 +302,8 @@ virNodeDeviceCapPCIDefFormat(virBufferPtr buf,
virBufferAdjustIndent(buf, 2);
for (i = 0; i < data->pci_dev.nIommuGroupDevices; i++) {
virBufferAsprintf(buf,
- "<address domain='0x%.4x' bus='0x%.2x' "
- "slot='0x%.2x' function='0x%.1x'/>\n",
+ "<address domain='0x%04x' bus='0x%02x' "
+ "slot='0x%02x' function='0x%d'/>\n",
data->pci_dev.iommuGroupDevices[i]->domain,
data->pci_dev.iommuGroupDevices[i]->bus,
data->pci_dev.iommuGroupDevices[i]->slot,
diff --git a/src/util/virpci.h b/src/util/virpci.h
index c13e7cd407..e333146ac0 100644
--- a/src/util/virpci.h
+++ b/src/util/virpci.h
@@ -44,7 +44,7 @@ struct _virZPCIDeviceAddress {
unsigned int fid;
};
-#define VIR_PCI_DEVICE_ADDRESS_FMT "%.4x:%.2x:%.2x.%.1x"
+#define VIR_PCI_DEVICE_ADDRESS_FMT "%04x:%02x:%02x.%d"
struct _virPCIDeviceAddress {
unsigned int domain;
diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index e79dc75342..ccda71d7e0 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -1006,8 +1006,8 @@ cmdAttachInterface(vshControl *ctl, const vshCmd *cmd)
virBufferAddLit(&buf, "<source>\n");
virBufferAdjustIndent(&buf, 2);
- virBufferAsprintf(&buf, "<address type='pci' domain='0x%.4x'"
- " bus='0x%.2x' slot='0x%.2x' function='0x%.1x'/>\n",
+ virBufferAsprintf(&buf, "<address type='pci' domain='0x%04x'"
+ " bus='0x%02x' slot='0x%02x' function='0x%d'/>\n",
pciAddr.domain, pciAddr.bus,
pciAddr.slot, pciAddr.function);
virBufferAdjustIndent(&buf, -2);
--
2.21.0
More information about the libvir-list
mailing list