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Accepting request 408966 from home:jfehlig:branches:Virtualization

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Add some SLE12 SP2 fixes to the Factory/Tumbleweed libvirt package.

- BuildRequires: use librbd-devel instead of ceph-devel
- Enable rbd support for aarch64
  bsc#979473

- Use driver_override sysfs interface for binding/unbinding
  PCI stub drivers
  pci-simplify-stub.patch, pci-use-driver-override-sysfs.patch
  bsc#986718

OBS-URL: https://build.opensuse.org/request/show/408966
OBS-URL: https://build.opensuse.org/package/show/Virtualization/libvirt?expand=0&rev=551
This commit is contained in:
James Fehlig 2016-07-15 20:05:01 +00:00 committed by Git OBS Bridge
parent b527b0e7f8
commit 91a43d315c
4 changed files with 433 additions and 6 deletions
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15
libvirt.changes
View File

@ -1,3 +1,18 @@
-------------------------------------------------------------------
Fri Jul 15 14:57:40 UTC 2016 - jfehlig@suse.com
- BuildRequires: use librbd-devel instead of ceph-devel
- Enable rbd support for aarch64
bsc#979473
-------------------------------------------------------------------
Thu Jul 14 22:39:08 UTC 2016 - jfehlig@suse.com
- Use driver_override sysfs interface for binding/unbinding
PCI stub drivers
pci-simplify-stub.patch, pci-use-driver-override-sysfs.patch
bsc#986718
-------------------------------------------------------------------
Tue Jul 12 19:57:40 UTC 2016 - jfehlig@suse.com

35
libvirt.spec
View File

@ -102,11 +102,30 @@
%define with_phyp 1
%endif
# For now, only enable rbd storage backend on x86_64 SLE
%if %{with_sle_build}
%ifarch x86_64
%define with_storage_rbd 1
%endif
# rbd enablement is a bit tricky. For x86_64
%ifarch x86_64
# enable on anything newer than 1320, or SLE12 family newer than 120100
# use librbd-devel as build dependency
%if 0%{?suse_version} > 1320 || ( 0%{?suse_version} == 1315 && ( 0%{?sle_version} > 120100 ) )
%define with_storage_rbd 1
%define with_rbd_lib librbd-devel
%endif
# enable for SLE12 family <= 120100 (SLE12ga/sp1, Leap 42.1)
# use ceph-devel as build dependency
%if 0%{?suse_version} == 1315 && 0%{?sle_version} <= 120100
%define with_storage_rbd 1
%define with_rbd_lib ceph-devel
%endif
%endif
# For arm
%ifarch aarch64
# enable on anything newer than 1320, or SLE12 family newer than 120100
# use librbd-devel as build dependency
%if 0%{?suse_version} > 1320 || ( 0%{?is_opensuse} == 0 && 0%{?sle_version} > 120100 )
%define with_storage_rbd 1
%define with_rbd_lib librbd-devel
%endif
%endif
# Support systemd on 12.1 and later
@ -240,7 +259,7 @@ BuildRequires: parted-devel
# For Multipath support
BuildRequires: device-mapper-devel
%if %{with_storage_rbd}
BuildRequires: ceph-devel
BuildRequires: %{with_rbd_lib}
%endif
%if %{with_numactl}
# For QEMU/LXC numa info
@ -282,6 +301,8 @@ Source100: %{name}-rpmlintrc
Patch0: c8f08e48-systemd-notify-fix.patch
# Patches pending upstream review
Patch100: libxl-dom-reset.patch
Patch101: pci-simplify-stub.patch
Patch102: pci-use-driver-override-sysfs.patch
# Need to go upstream
Patch150: xen-pv-cdrom.patch
Patch151: blockcopy-check-dst-identical-device.patch
@ -733,6 +754,8 @@ libvirt plugin for NSS for translating domain names into IP addresses.
%setup -q
%patch0 -p1
%patch100 -p1
%patch101 -p1
%patch102 -p1
%patch150 -p1
%patch151 -p1
%patch152 -p1

118
pci-simplify-stub.patch Normal file
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@ -0,0 +1,118 @@
commit caba00f00fb18d8ffc388f4fc8b82527ef98d3b0
Author: Jim Fehlig <jfehlig@suse.com>
Date: Wed Jul 6 14:06:37 2016 -0600
virpci: simplify virPCIDeviceBindToStub
Early in virPCIDeviceBindToStub, there is a check to see if the
stub is already bound to the device, returning success with no
further actions if that is the case.
The same condition is unnecessarily checked later in the function.
Remove the unneeded checks to simplify the logic a bit.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Index: libvirt-2.0.0/src/util/virpci.c
===================================================================
--- libvirt-2.0.0.orig/src/util/virpci.c
+++ libvirt-2.0.0/src/util/virpci.c
@@ -1196,7 +1196,6 @@ static int
virPCIDeviceBindToStub(virPCIDevicePtr dev)
{
int result = -1;
- bool reprobe = false;
char *stubDriverPath = NULL;
char *driverLink = NULL;
char *path = NULL; /* reused for different purposes */
@@ -1225,10 +1224,16 @@ virPCIDeviceBindToStub(virPCIDevicePtr d
/* The device is already bound to the correct driver */
VIR_DEBUG("Device %s is already bound to %s",
dev->name, stubDriverName);
+ dev->unbind_from_stub = true;
+ dev->remove_slot = true;
result = 0;
goto cleanup;
}
- reprobe = true;
+ /*
+ * If the device is bound to a driver that is not the stub, we'll
+ * need to reprobe later
+ */
+ dev->reprobe = true;
}
/* Add the PCI device ID to the stub's dynamic ID table;
@@ -1249,51 +1254,34 @@ virPCIDeviceBindToStub(virPCIDevicePtr d
goto cleanup;
}
- /* check whether the device is bound to pci-stub when we write dev->id to
- * ${stubDriver}/new_id.
- */
- if (virFileLinkPointsTo(driverLink, stubDriverPath)) {
- dev->unbind_from_stub = true;
- dev->remove_slot = true;
- result = 0;
+ if (virPCIDeviceUnbind(dev) < 0)
goto remove_id;
- }
- if (virPCIDeviceUnbind(dev) < 0)
+ /* Xen's pciback.ko wants you to use new_slot first */
+ VIR_FREE(path);
+ if (!(path = virPCIDriverFile(stubDriverName, "new_slot")))
goto remove_id;
- /* If the device was bound to a driver we'll need to reprobe later */
- dev->reprobe = reprobe;
+ if (virFileExists(path) && virFileWriteStr(path, dev->name, 0) < 0) {
+ virReportSystemError(errno,
+ _("Failed to add slot for "
+ "PCI device '%s' to %s"),
+ dev->name, stubDriverName);
+ goto remove_id;
+ }
+ dev->remove_slot = true;
- /* If the device isn't already bound to pci-stub, try binding it now.
- */
- if (!virFileLinkPointsTo(driverLink, stubDriverPath)) {
- /* Xen's pciback.ko wants you to use new_slot first */
- VIR_FREE(path);
- if (!(path = virPCIDriverFile(stubDriverName, "new_slot")))
- goto remove_id;
-
- if (virFileExists(path) && virFileWriteStr(path, dev->name, 0) < 0) {
- virReportSystemError(errno,
- _("Failed to add slot for "
- "PCI device '%s' to %s"),
- dev->name, stubDriverName);
- goto remove_id;
- }
- dev->remove_slot = true;
+ VIR_FREE(path);
+ if (!(path = virPCIDriverFile(stubDriverName, "bind")))
+ goto remove_id;
- VIR_FREE(path);
- if (!(path = virPCIDriverFile(stubDriverName, "bind")))
- goto remove_id;
-
- if (virFileWriteStr(path, dev->name, 0) < 0) {
- virReportSystemError(errno,
- _("Failed to bind PCI device '%s' to %s"),
- dev->name, stubDriverName);
- goto remove_id;
- }
- dev->unbind_from_stub = true;
+ if (virFileWriteStr(path, dev->name, 0) < 0) {
+ virReportSystemError(errno,
+ _("Failed to bind PCI device '%s' to %s"),
+ dev->name, stubDriverName);
+ goto remove_id;
}
+ dev->unbind_from_stub = true;
result = 0;

271
pci-use-driver-override-sysfs.patch Normal file
View File

@ -0,0 +1,271 @@
commit 1de627810eaba897705cf32c9f025023e34ce73a
Author: Jim Fehlig <jfehlig@suse.com>
Date: Fri Jul 8 16:25:03 2016 -0600
virpci: support driver_override sysfs interface
Currently, libvirt uses the new_id PCI sysfs interface to bind a PCI
stub driver to a PCI device. The new_id interface is known to be
buggy and racey, hence a more deterministic interface was introduced
in the 3.12 kernel - driver_override. For more details see
https://www.redhat.com/archives/libvir-list/2016-June/msg02124.html
This patch changes the stub binding/unbinding code to use the
driver_override interface if present. If not present, the new_id
interface will be used to provide compatibility with older kernels
lacking driver_override.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Index: libvirt-2.0.0/src/util/virpci.c
===================================================================
--- libvirt-2.0.0.orig/src/util/virpci.c
+++ libvirt-2.0.0/src/util/virpci.c
@@ -1158,6 +1158,19 @@ virPCIDeviceUnbindFromStub(virPCIDeviceP
VIR_DEBUG("Reprobing for PCI device %s", dev->name);
+ /* Remove driver_override if it exists */
+ VIR_FREE(path);
+ if (!(path = virPCIFile(dev->name, "driver_override")))
+ goto cleanup;
+
+ if (virFileExists(path) && virFileWriteStr(path, "\n", 0) < 0) {
+ virReportSystemError(errno,
+ _("Failed to remove stub driver from "
+ "driver_override interface of PCI device '%s'"),
+ dev->name);
+ goto cleanup;
+ }
+
/* Trigger a re-probe of the device is not in the stub's dynamic
* ID table. If the stub is available, but 'remove_id' isn't
* available, then re-probing would just cause the device to be
@@ -1193,49 +1206,13 @@ virPCIDeviceUnbindFromStub(virPCIDeviceP
static int
-virPCIDeviceBindToStub(virPCIDevicePtr dev)
+virPCIDeviceBindToStubWithNewid(virPCIDevicePtr dev,
+ const char *stubDriverName)
{
- int result = -1;
- char *stubDriverPath = NULL;
- char *driverLink = NULL;
- char *path = NULL; /* reused for different purposes */
- const char *stubDriverName = NULL;
+ int ret = -1;
+ char *path = NULL;
virErrorPtr err = NULL;
- /* Check the device is configured to use one of the known stub drivers */
- if (dev->stubDriver == VIR_PCI_STUB_DRIVER_NONE) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
- _("No stub driver configured for PCI device %s"),
- dev->name);
- return -1;
- } else if (!(stubDriverName = virPCIStubDriverTypeToString(dev->stubDriver))) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
- _("Unknown stub driver configured for PCI device %s"),
- dev->name);
- return -1;
- }
-
- if (!(stubDriverPath = virPCIDriverDir(stubDriverName)) ||
- !(driverLink = virPCIFile(dev->name, "driver")))
- goto cleanup;
-
- if (virFileExists(driverLink)) {
- if (virFileLinkPointsTo(driverLink, stubDriverPath)) {
- /* The device is already bound to the correct driver */
- VIR_DEBUG("Device %s is already bound to %s",
- dev->name, stubDriverName);
- dev->unbind_from_stub = true;
- dev->remove_slot = true;
- result = 0;
- goto cleanup;
- }
- /*
- * If the device is bound to a driver that is not the stub, we'll
- * need to reprobe later
- */
- dev->reprobe = true;
- }
-
/* Add the PCI device ID to the stub's dynamic ID table;
* this is needed to allow us to bind the device to the stub.
* Note: if the device is not currently bound to any driver,
@@ -1283,7 +1260,7 @@ virPCIDeviceBindToStub(virPCIDevicePtr d
}
dev->unbind_from_stub = true;
- result = 0;
+ ret = 0;
remove_id:
err = virSaveLastError();
@@ -1299,7 +1276,7 @@ virPCIDeviceBindToStub(virPCIDevicePtr d
"cannot be probed again.", dev->id, stubDriverName);
}
dev->reprobe = false;
- result = -1;
+ ret = -1;
goto cleanup;
}
@@ -1314,10 +1291,142 @@ virPCIDeviceBindToStub(virPCIDevicePtr d
"cannot be probed again.", dev->id, stubDriverName);
}
dev->reprobe = false;
- result = -1;
+ ret = -1;
+ goto cleanup;
+ }
+
+ cleanup:
+ VIR_FREE(path);
+
+ if (err)
+ virSetError(err);
+ virFreeError(err);
+
+ return ret;
+}
+
+
+static int
+virPCIDeviceBindToStubWithOverride(virPCIDevicePtr dev,
+ const char *stubDriverName)
+{
+ int ret = -1;
+ char *path = NULL;
+
+ /*
+ * Add stub to the device's driver_override, falling back to
+ * adding the device ID to the stub's dynamic ID table.
+ */
+ if (!(path = virPCIFile(dev->name, "driver_override")))
+ return -1;
+
+ if (virFileWriteStr(path, stubDriverName, 0) < 0) {
+ virReportSystemError(errno,
+ _("Failed to add stub driver '%s' to "
+ "driver_override interface of PCI device '%s'"),
+ stubDriverName, dev->name);
+ goto cleanup;
+ }
+
+ if (virPCIDeviceUnbind(dev) < 0)
+ goto cleanup;
+
+ /* Xen's pciback.ko wants you to use new_slot first */
+ VIR_FREE(path);
+ if (!(path = virPCIDriverFile(stubDriverName, "new_slot")))
+ goto cleanup;
+
+ if (virFileExists(path) && virFileWriteStr(path, dev->name, 0) < 0) {
+ virReportSystemError(errno,
+ _("Failed to add slot for "
+ "PCI device '%s' to %s"),
+ dev->name, stubDriverName);
+ goto cleanup;
+ }
+ dev->remove_slot = true;
+
+ if (virFileWriteStr(PCI_SYSFS "drivers_probe", dev->name, 0) < 0) {
+ virReportSystemError(errno,
+ _("Failed to trigger a re-probe for PCI device '%s'"),
+ dev->name);
goto cleanup;
}
+ /*
+ * Device is now bound to the stub. Set reprobe so it will be re-bound
+ * when unbinding from the stub.
+ */
+ dev->reprobe = true;
+ dev->unbind_from_stub = true;
+
+ ret = 0;
+
+ cleanup:
+ VIR_FREE(path);
+ return ret;
+}
+
+
+static int
+virPCIDeviceBindToStub(virPCIDevicePtr dev)
+{
+ int result = -1;
+ char *stubDriverPath = NULL;
+ char *driverLink = NULL;
+ char *path = NULL; /* reused for different purposes */
+ const char *stubDriverName = NULL;
+
+ /* Check the device is configured to use one of the known stub drivers */
+ if (dev->stubDriver == VIR_PCI_STUB_DRIVER_NONE) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("No stub driver configured for PCI device %s"),
+ dev->name);
+ return -1;
+ } else if (!(stubDriverName = virPCIStubDriverTypeToString(dev->stubDriver))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Unknown stub driver configured for PCI device %s"),
+ dev->name);
+ return -1;
+ }
+
+ if (!(stubDriverPath = virPCIDriverDir(stubDriverName)) ||
+ !(driverLink = virPCIFile(dev->name, "driver")))
+ goto cleanup;
+
+ if (virFileExists(driverLink)) {
+ if (virFileLinkPointsTo(driverLink, stubDriverPath)) {
+ /* The device is already bound to the correct driver */
+ VIR_DEBUG("Device %s is already bound to %s",
+ dev->name, stubDriverName);
+ dev->unbind_from_stub = true;
+ dev->remove_slot = true;
+ result = 0;
+ goto cleanup;
+ }
+ /*
+ * If the device is bound to a driver that is not the stub, we'll
+ * need to reprobe later
+ */
+ dev->reprobe = true;
+ }
+
+ /*
+ * Add stub to the device's driver_override, falling back to
+ * adding the device ID to the stub's dynamic ID table.
+ */
+ if (!(path = virPCIFile(dev->name, "driver_override")))
+ goto cleanup;
+
+ if (virFileExists(path)) {
+ if (virPCIDeviceBindToStubWithOverride(dev, stubDriverName) < 0)
+ goto cleanup;
+ } else {
+ if (virPCIDeviceBindToStubWithNewid(dev, stubDriverName) < 0)
+ goto cleanup;
+ }
+
+ result = 0;
+
cleanup:
VIR_FREE(stubDriverPath);
VIR_FREE(driverLink);
@@ -1326,10 +1435,6 @@ virPCIDeviceBindToStub(virPCIDevicePtr d
if (result < 0)
virPCIDeviceUnbindFromStub(dev);
- if (err)
- virSetError(err);
- virFreeError(err);
-
return result;
}