[PATCH 3/3] xenconfig: Add support for max_event_channels
Jim Fehlig
jfehlig at suse.com
Wed Apr 8 20:08:55 UTC 2020
Add support in the domXML<->native config converter for max_event_channels.
The parser and formater functions for max_grant_frames were reworked to
also parse max_event_channels. In doing so the xenbus controller is added
earlier in the config parsing, requiring a small adjustment to one of the
existing tests. Include a new test for the event channel conversion.
Signed-off-by: Jim Fehlig <jfehlig at suse.com>
---
src/libxl/xen_xl.c | 57 +++++++++++--------
tests/xlconfigdata/test-max-eventchannels.cfg | 13 +++++
tests/xlconfigdata/test-max-eventchannels.xml | 32 +++++++++++
tests/xlconfigdata/test-usbctrl.xml | 2 +-
tests/xlconfigtest.c | 2 +
5 files changed, 80 insertions(+), 26 deletions(-)
diff --git a/src/libxl/xen_xl.c b/src/libxl/xen_xl.c
index 91b1825399..d40c2e1d8e 100644
--- a/src/libxl/xen_xl.c
+++ b/src/libxl/xen_xl.c
@@ -597,19 +597,12 @@ xenParseXLVnuma(virConfPtr conf,
}
#endif
-#ifdef LIBXL_HAVE_BUILDINFO_GRANT_LIMITS
static int
-xenParseXLGntLimits(virConfPtr conf, virDomainDefPtr def)
+xenParseXLXenbusLimits(virConfPtr conf, virDomainDefPtr def)
{
- unsigned long max_gntframes;
int ctlr_idx;
virDomainControllerDefPtr xenbus_ctlr;
-
- if (xenConfigGetULong(conf, "max_grant_frames", &max_gntframes, 0) < 0)
- return -1;
-
- if (max_gntframes <= 0)
- return 0;
+ unsigned long limit;
ctlr_idx = virDomainControllerFindByType(def, VIR_DOMAIN_CONTROLLER_TYPE_XENBUS);
if (ctlr_idx == -1)
@@ -620,10 +613,20 @@ xenParseXLGntLimits(virConfPtr conf, virDomainDefPtr def)
if (xenbus_ctlr == NULL)
return -1;
- xenbus_ctlr->opts.xenbusopts.maxGrantFrames = max_gntframes;
+ if (xenConfigGetULong(conf, "max_event_channels", &limit, 0) < 0)
+ return -1;
+ if (limit > 0)
+ xenbus_ctlr->opts.xenbusopts.maxEventChannels = limit;
+
+#ifdef LIBXL_HAVE_BUILDINFO_GRANT_LIMITS
+ if (xenConfigGetULong(conf, "max_grant_frames", &limit, 0) < 0)
+ return -1;
+ if (limit > 0)
+ xenbus_ctlr->opts.xenbusopts.maxGrantFrames = limit;
+#endif
+
return 0;
}
-#endif
static int
xenParseXLDiskSrc(virDomainDiskDefPtr disk, char *srcstr)
@@ -1180,10 +1183,8 @@ xenParseXL(virConfPtr conf,
goto cleanup;
#endif
-#ifdef LIBXL_HAVE_BUILDINFO_GRANT_LIMITS
- if (xenParseXLGntLimits(conf, def) < 0)
+ if (xenParseXLXenbusLimits(conf, def) < 0)
goto cleanup;
-#endif
if (xenParseXLCPUID(conf, def) < 0)
goto cleanup;
@@ -1532,23 +1533,31 @@ xenFormatXLDomainVnuma(virConfPtr conf,
}
#endif
-#ifdef LIBXL_HAVE_BUILDINFO_GRANT_LIMITS
static int
-xenFormatXLGntLimits(virConfPtr conf, virDomainDefPtr def)
+xenFormatXLXenbusLimits(virConfPtr conf, virDomainDefPtr def)
{
size_t i;
for (i = 0; i < def->ncontrollers; i++) {
- if (def->controllers[i]->type == VIR_DOMAIN_CONTROLLER_TYPE_XENBUS &&
- def->controllers[i]->opts.xenbusopts.maxGrantFrames > 0) {
- if (xenConfigSetInt(conf, "max_grant_frames",
- def->controllers[i]->opts.xenbusopts.maxGrantFrames) < 0)
- return -1;
+ if (def->controllers[i]->type == VIR_DOMAIN_CONTROLLER_TYPE_XENBUS) {
+ if (def->controllers[i]->opts.xenbusopts.maxEventChannels > 0) {
+ if (xenConfigSetInt(conf, "max_event_channels",
+ def->controllers[i]->opts.xenbusopts.maxEventChannels) < 0)
+ return -1;
+ }
+
+#ifdef LIBXL_HAVE_BUILDINFO_GRANT_LIMITS
+ if (def->controllers[i]->opts.xenbusopts.maxGrantFrames > 0) {
+ if (xenConfigSetInt(conf, "max_grant_frames",
+ def->controllers[i]->opts.xenbusopts.maxGrantFrames) < 0)
+ return -1;
+ }
+#endif
}
}
+
return 0;
}
-#endif
static char *
xenFormatXLDiskSrcNet(virStorageSourcePtr src)
@@ -2191,10 +2200,8 @@ xenFormatXL(virDomainDefPtr def, virConnectPtr conn)
return NULL;
#endif
-#ifdef LIBXL_HAVE_BUILDINFO_GRANT_LIMITS
- if (xenFormatXLGntLimits(conf, def) < 0)
+ if (xenFormatXLXenbusLimits(conf, def) < 0)
return NULL;
-#endif
if (xenFormatXLDomainDisks(conf, def) < 0)
return NULL;
diff --git a/tests/xlconfigdata/test-max-eventchannels.cfg b/tests/xlconfigdata/test-max-eventchannels.cfg
new file mode 100644
index 0000000000..6794d6e318
--- /dev/null
+++ b/tests/xlconfigdata/test-max-eventchannels.cfg
@@ -0,0 +1,13 @@
+name = "XenGuest1"
+uuid = "45b60f51-88a9-47a8-a3b3-5e66d71b2283"
+maxmem = 512
+memory = 512
+vcpus = 1
+localtime = 0
+on_poweroff = "preserve"
+on_reboot = "restart"
+on_crash = "preserve"
+vif = [ "mac=5a:36:0e:be:00:09" ]
+bootloader = "/usr/bin/pygrub"
+max_event_channels = 2047
+disk = [ "format=qcow2,vdev=xvda,access=rw,backendtype=qdisk,target=/var/lib/xen/images/debian/disk.qcow2" ]
diff --git a/tests/xlconfigdata/test-max-eventchannels.xml b/tests/xlconfigdata/test-max-eventchannels.xml
new file mode 100644
index 0000000000..3ee371a002
--- /dev/null
+++ b/tests/xlconfigdata/test-max-eventchannels.xml
@@ -0,0 +1,32 @@
+<domain type='xen'>
+ <name>XenGuest1</name>
+ <uuid>45b60f51-88a9-47a8-a3b3-5e66d71b2283</uuid>
+ <memory unit='KiB'>524288</memory>
+ <currentMemory unit='KiB'>524288</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <bootloader>/usr/bin/pygrub</bootloader>
+ <os>
+ <type arch='x86_64' machine='xenpv'>linux</type>
+ </os>
+ <clock offset='utc' adjustment='reset'/>
+ <on_poweroff>preserve</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>preserve</on_crash>
+ <devices>
+ <disk type='file' device='disk'>
+ <driver name='qemu' type='qcow2'/>
+ <source file='/var/lib/xen/images/debian/disk.qcow2'/>
+ <target dev='xvda' bus='xen'/>
+ </disk>
+ <controller type='xenbus' index='0' maxEventChannels='2047'/>
+ <interface type='ethernet'>
+ <mac address='5a:36:0e:be:00:09'/>
+ </interface>
+ <console type='pty'>
+ <target type='xen' port='0'/>
+ </console>
+ <input type='mouse' bus='xen'/>
+ <input type='keyboard' bus='xen'/>
+ <memballoon model='xen'/>
+ </devices>
+</domain>
diff --git a/tests/xlconfigdata/test-usbctrl.xml b/tests/xlconfigdata/test-usbctrl.xml
index 3fadd7a8cf..6bf8c2d1d9 100644
--- a/tests/xlconfigdata/test-usbctrl.xml
+++ b/tests/xlconfigdata/test-usbctrl.xml
@@ -18,8 +18,8 @@
<source file='/var/lib/xen/images/debian/disk.qcow2'/>
<target dev='xvda' bus='xen'/>
</disk>
- <controller type='usb' index='0' model='qusb2' ports='6'/>
<controller type='xenbus' index='0'/>
+ <controller type='usb' index='0' model='qusb2' ports='6'/>
<interface type='ethernet'>
<mac address='5a:36:0e:be:00:09'/>
</interface>
diff --git a/tests/xlconfigtest.c b/tests/xlconfigtest.c
index 4e4b28cd34..8faef16ddf 100644
--- a/tests/xlconfigtest.c
+++ b/tests/xlconfigtest.c
@@ -294,6 +294,8 @@ mymain(void)
DO_TEST("max-gntframes");
#endif
+ DO_TEST("max-eventchannels");
+
DO_TEST("vif-typename");
DO_TEST("vif-multi-ip");
DO_TEST("usb");
--
2.26.0
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