[libvirt] [PATCH v2 RESEND 00/12] PCI passthrough support on s390
by Yi Min Zhao
Abstract
========
The PCI representation in QEMU has recently been extended for S390
allowing configuration of zPCI attributes like uid (user-defined
identifier) and fid (PCI function identifier).
The details can be found here:
https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg07262.html
To support the new zPCI feature of the S390 platform, two new XML
attributes, @uid and @fid, are introduced for device addresses of type
'pci', i.e.:
<hostdev mode='subsystem' type='pci'>
<driver name='vfio'/>
<source>
<address domain='0x0001' bus='0x00' slot='0x00' function='0x0'/>
</source>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'
uid='0x0003' fid='0x00000027'/>
</hostdev>
uid and fid are optional attributes. If they are defined by the user,
unique values within the guest domain must be used. If they are not
specified and the architecture requires them, they are automatically
generated with non-conflicting values.
Current implementation is the most seamless one for the user as it
unites the address specific data of a PCI device on one XML element.
It could accommodate both specifying our special parameters (uid and fid)
and re-using standard statements (domain, bus, slot and function) for
PCI devices. User can still specify bus/slot/function for the virtualized
PCI devices in the XML.
Thus uid/fid act as an extension to the PCI address and are stored in
a new structure 'virZPCIDeviceAddress' which is a member of common PCI
Address structure. Additionally, two hashtables are used for assignment
and reservation of uid/fid.
In support of extending the PCI address, a new PCI address extension flag is
introduced. This extension flag allows is not only dedicated for the S390
platform but also other architectures needing certain extensions to PCI
address space.
Code Base
=========
commit in master:
767f9e1449b1a36111532847f0c62dc758263c42
qemu: validate: Enforce compile time switch type checking for videos
Change Log
==========
v1->v2:
1. Separate test commit and merge testcases into corresponding commits that
introduce the functionalities firstly.
2. Spare some checks for zpci device.
3. Add vsock and controller support.
4. Add uin32 type schema.
5. Rename zpciuid and zpcifid to zpci_uid and zpci_fid.
6. Always return multibus support on S390.
Yi Min Zhao (12):
conf: Add definitions for 'uid' and 'fid' PCI address attributes
qemu: Introduce zPCI capability
conf: Introduce a new PCI address extension flag
qemu: Enable PCI multi bus for S390 guests
qemu: Auto add pci-root for s390/s390x guests
conf: Introduce address caching for PCI extensions
conf: Introduce parser, formatter for uid and fid
conf: Allocate/release 'uid' and 'fid' in PCI address
qemu: Generate and use zPCI device in QEMU command line
qemu: Add hotpluging support for PCI devices on S390 guests
docs: Add 'uid' and 'fid' information
news: Update news for PCI address extension attributes
docs/formatdomain.html.in | 9 +-
docs/news.xml | 11 +
docs/schemas/basictypes.rng | 31 ++
docs/schemas/domaincommon.rng | 1 +
src/conf/device_conf.c | 73 +++++
src/conf/device_conf.h | 1 +
src/conf/domain_addr.c | 346 +++++++++++++++++++++
src/conf/domain_addr.h | 29 ++
src/conf/domain_conf.c | 6 +
src/libvirt_private.syms | 4 +
src/qemu/qemu_capabilities.c | 6 +
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 115 +++++++
src/qemu/qemu_command.h | 4 +
src/qemu/qemu_domain.c | 1 +
src/qemu/qemu_domain_address.c | 181 ++++++++++-
src/qemu/qemu_hotplug.c | 182 ++++++++++-
src/util/virpci.h | 13 +
tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.11.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml | 1 +
tests/qemuxml2argvdata/disk-virtio-s390-zpci.args | 27 ++
tests/qemuxml2argvdata/disk-virtio-s390-zpci.xml | 17 +
.../hostdev-vfio-zpci-autogenerate.args | 26 ++
.../hostdev-vfio-zpci-autogenerate.xml | 18 ++
.../hostdev-vfio-zpci-boundaries.args | 30 ++
.../hostdev-vfio-zpci-boundaries.xml | 26 ++
.../hostdev-vfio-zpci-multidomain-many.args | 40 +++
.../hostdev-vfio-zpci-multidomain-many.xml | 67 ++++
tests/qemuxml2argvdata/hostdev-vfio-zpci.args | 26 ++
tests/qemuxml2argvdata/hostdev-vfio-zpci.xml | 19 ++
tests/qemuxml2argvtest.c | 14 +
tests/qemuxml2xmloutdata/disk-virtio-s390-zpci.xml | 29 ++
tests/qemuxml2xmloutdata/hostdev-vfio-zpci.xml | 30 ++
tests/qemuxml2xmltest.c | 3 +
38 files changed, 1377 insertions(+), 15 deletions(-)
create mode 100644 tests/qemuxml2argvdata/disk-virtio-s390-zpci.args
create mode 100644 tests/qemuxml2argvdata/disk-virtio-s390-zpci.xml
create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci-autogenerate.args
create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci-autogenerate.xml
create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci-boundaries.args
create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci-boundaries.xml
create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci-multidomain-many.args
create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci-multidomain-many.xml
create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci.args
create mode 100644 tests/qemuxml2argvdata/hostdev-vfio-zpci.xml
create mode 100644 tests/qemuxml2xmloutdata/disk-virtio-s390-zpci.xml
create mode 100644 tests/qemuxml2xmloutdata/hostdev-vfio-zpci.xml
--
Yi Min
6 years, 8 months
- 7
- 52
[libvirt] [PATCH] qemu: monitor: Fix incrementing of 'nstats' in qemuMonitorJSONBlockStatsCollectData
by Peter Krempa
commit 8d9ca6cdb3a5 refactored qemuMonitorJSONBlockStatsCollectData so
that the number of stats is passed back via a pointer. The commit failed
to fix the macro which increments the number of stats to increment the
actual pointee.
Signed-off-by: Peter Krempa <pkrempa(a)redhat.com>
---
src/qemu/qemu_monitor_json.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index 9acf62e0bb..2921f110a9 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -2299,7 +2299,7 @@ qemuMonitorJSONBlockStatsCollectData(virJSONValuePtr dev,
#define QEMU_MONITOR_BLOCK_STAT_GET(NAME, VAR, MANDATORY) \
if (MANDATORY || virJSONValueObjectHasKey(stats, NAME)) { \
- nstats++; \
+ (*nstats)++; \
if (virJSONValueObjectGetNumberLong(stats, NAME, &VAR) < 0) { \
virReportError(VIR_ERR_INTERNAL_ERROR, \
_("cannot read %s statistic"), NAME); \
--
2.16.2
6 years, 8 months
- 2
- 1