Since qemu-2.10 it is required to unplug emulated devices again after
a live migration. If this is not done, qemu's block-backend driver
will be unable to open the backing disk image because it is still busy
by qemu's IDE driver. As a result the domUs block-frontend driver will
be unable to access the disks, and the domU has to be destroyed.
libxl is unable to detect the situation.
Apply the same workaround for this qemu bug that was done already
years ago in linux.git with commit 512b109ec962 ("xen: unplug the
emulated devices at resume time") to make sure xenlinux based domUs
can be migrated to unfixed hosts.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Jan Beulich <jbeulich@suse.com>
During the investigation of very slow dump times of guest images in
Amazon EC2 instance, it was discovered that the
register_oldmem_pfn_is_ram() API implemented by the upstream kernel
commit 997c136f518c5debd63847e78e2a8694f56dcf90:
fs/proc/vmcore.c: add hook to read_from_oldmem() to check
for non-ram pages
was not being called. This was due to the PV driver with the call
to register_oldmem_pfn_is_ram() API was not including the
kernel header file that is used to communicate support of the API in the
kernel. Fix the issue by including the required header file.
Signed-off-by: Mike Meyer <mike.meyer@teradata.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Olaf Hering <olaf@aepfle.de>
As recommended in http://www.gnu.org/licenses/gpl-howto.en.html.
This is the result of:
$ git grep -El Mass\|Temple\|Franklin | xargs ./fsf.pl
Where fsf.pl is:
#!/usr/bin/perl -w -pi.bak -0777
my $repl = 'If not, see <http://www.gnu.org/licenses/>.';
my $br = qr/(?:\s*\n\s*(?:[\*\#]|\/\/|\.\\" )?\s*|\s+)/;
my $inwt = qr/[Ii]f${br}not,${br}write${br}(?:to${br})?the${br}Free${br}Software${br}Foundation,(?:${br}Inc\.,)?/;
my $mass = qr/675${br}Mass${br}Ave,?${br}Cambridge,?${br}MA${br}02139,?${br}USA,?\.?/;
my $franklin = qr/51${br}Franklin${br}St(?:reet)?(?:,${br}| - )Fifth${br}Floor,?${br}Boston,?${br}MA,?${br}02110-1301,?${br}USA,?\.?/;
my $temple = qr/59${br}Temple${br}Place(?:,${br}| - )Suite${br}330,?${br}Boston,?${br}MA,?${br}021110?-1307,?${br}USA,?\.?/;
s|$inwt$br$mass|$repl|m;
s|$inwt$br$franklin|$repl|m;
s|$inwt$br$temple|$repl|m;
The only remaining mentions of these addresses are in COPYING files which I
haven't touched.
Some of the changed files are imports from elsewhere, however
filtering them out is tricky, I think it is tolerable to have these
files be modified here and then perhaps reverted on the next sync,
since it's only 1-2 lines and obvious what is going on.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Since xen-3.3 an official unplug protocol for emulated hardware is
available in the toolstack. The pvops kernel does the unplug per
default, so it is safe to do it also in the drivers for forward ported
xenlinux.
Currently its required to load xen-platform-pci with the module
parameter dev_unplug=all, which is cumbersome.
Also recognize the dev_unplug=never parameter, which provides the
default before this patch.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
The flag IRQF_SAMPLE_RANDOM was removed in 3.6-rc1. Add it only if it is
defined. An additional call to add_interrupt_randomness is appearently
not needed because its now called unconditionally in
handle_irq_event_percpu().
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Committed-by: Jan Beulich <jbeulich@suse.com>
Allow compilation of PVonHVM drivers with forward-ported xenlinux
sources in openSuSE 12.2. Since Linux 3.4 asm/system.h is not present
anymore. Remove inclusion of this header, its not needed.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Committed-by: Jan Beulich <jbeulich@suse.com>
Register pfn_is_ram helper speed up reading /proc/vmcore in the kdump
kernel. It is compiled only if the kernel source is recent enough to
have the pfn_is_ram helper (v3.0-rc1, commit
997c136f518c5debd63847e78e2a8694f56dcf90).
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Committed-by: Jan Beulich <jbeulich@suse.com>
Allow compilation of PVonHVM drivers with forward-ported xenlinux
sources in openSuSE 12.1. xen_cpuid_base() is now in mainline, the copy
in the xen tree leads to a compilation error. The current state leads
to a compile error:
/usr/src/packages/BUILD/xen-4.2.24547/non-dbg/obj/default/platform-pci/platform-pci.c:121: error: redefinition of 'xen_cpuid_base'
/usr/src/linux-3.0.13-0.11/arch/x86/include/asm/xen/hypervisor.h:43: error: previous definition of 'xen_cpuid_base' was here
The reason is that the kernel sources are searched before the xen
sources for asm/hypervisor.h:
/usr/src/linux-3.0.13-0.11/arch/x86/include/asm/hypervisor.h
/usr/src/packages/BUILD/xen-4.2.24547/non-dbg/obj/default/include/asm/hypervisor.h
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Jan Beulich <jbeulich@suse.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
This is the correct interface to use and something has broken the use
of the previous incorrect interface (which fails because the request
conflicts with the resources assigned for the PCI device itself
instead of nesting like the PCI interfaces do).
pci_request_region() has been available since at least Linux 2.6.5.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jan Beulich <jbeulich@novell.com>
The order of the argument of outl() is wrong.
The correct order is outl(value, port). This causes kernel panic.
And outw() is also similar.
Signed-off-by: KUWAMURA Shin'ya <kuwa@jp.fujitsu.com>
dev_unplug=[all,][ide-disks,][aux-ide-disks,][nics]
ide-disks: Unplug all emulated IDE disks (but not CD-ROMs)
aux-ide-disks: As above, but doesn't touch primary IDE master
nics: Unplug all emulated NICs
all: ide-disks and nics
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
ports from build integration
Both distros now include Xen support from their respective upstreams
and these kernels are very out of date wrt both the upstream distro
kernel and the upstream Xen kernel.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Make the drivers build properly in a 2.6.27 environment as well as
against a kernel with pv-ops Xen configured on (in the latter case
more work would be needed to also make the drivers work, as there's a
large number of duplicate exports).
Portions from Charles Arnold <carnold@novell.com>.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
A minimal implementation of the Viridian (Hyper-V) guest
interface. The only enlightenments advertised and supported are vAPIC
MSRs and long-spin-wait notifications. The set of enlightenments can
easily be extended in future, as they are found to provide a
performance win, and configured via an extended HVM_PARAM_VIRIDIAN hvm
parameter.
Signed-off-by: Peter Johnston <peter.johnston@citrix.com>
Signed-off-by: Tim Deegan <tim.deegan@citrix.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Attached patch adds a function to automatically dump core file when
guest linux on HVM domain panics, in the same way as PV domain.
I tested this patch with kernel 2.6.9 and 2.6.18 on both of x86 and
ia64 (to buid for ia64, some patches in the ia64 tree are needed) by
the following steps, and confirmed it works well:
1. Build xen-platform-pci.ko.
2. In /etc/xen/xend-config.sxp, set (enable-dump yes).
3. On guest linux, execute insmod:
# insmod xen-platform-pci.ko
4. When guest linux panics, a core file is dumped.
Signed-off-by: Tetsu Yamamoto <yamamoto.tetsu@jp.fujitsu.com>
Make use of split out xencomm_arch_hypercall_suspend to fix the following
module load error:
Loading xen-platform-pci.ko module
xen_platform_pci: Unknown symbol xencomm_hypercall_suspend
insmod: error inserting '/lib/xen-platform-pci.ko':
-1 Unknown symbol in module
ERROR: /bin/insmod exited abnormally! (pid 210)
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
When xm block-detach command was done on PV-ON-HVM, the response of
other disks was lost. It is because a wrong event channel was
invalidated when detaching it. Not the evtchn number but the irq
number is invalidated specifying it.
Signed-off-by: Takanori Kasai <kasai.takanori@jp.fujitsu.com>
Signed-off-by: Tomonari Horikoshi <t.horikoshi@jp.fujitsu.com>
Signed-off-by: Kazuhiro Suzuki <kaz@jp.fujitsu.com>
- The adjustments to README and overrides.mk are generic.
- The removal of explicit linux/config.h inclusion should also not
cause any issues.
- The introduction of irq_handler_t should eliminiate warnings on
2.6.19+ kernels (I didn't check they're there, but since the
request_irq prototype changed, I'm sure there's at least
one. However, as a result changes to the Linux tree are expected to
be required.
- The change setup_xen_features -> xen_setup_features follows the
naming in mainline 2.6.23 but would apparently also require changes
to the Linux tree.
- The changes SA_* -> IRQF_ and pci_module_init ->
pci_register_driver should also not cause issues.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
smp_call_function() compiles to nothing on non-SMP, so we had a
defined-but-not-used static function.
Based on an original patch by:
Signed-off-by: Ben Guthro <bguthro@virtualiron.com>
Signed-off-by: Robert Phillips <rphillips@virtualiron.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
This patch adds missing includes that currently work through indirect
inclusions. This cannot be relied on and indeed does break on older
kernels (2.4 for PV-on-HVM).
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
after balloon operations in an HVM guest.
This removes the I/O port hack from the guest OS, and from ioemu.
Also we flush on reservation *increases* as well as decreases. This is
necessary until qemu-dm can demand-fault page mappings into existing
valid buckets.
Signed-off-by: Steven Hand <steven@xensource.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
The HVM guest did not respond when PV-on-HVM driver was tested on
the following conditions.
1. RHEL4u4
2. vcpu 4
3. irqbalance on
4. pv-on-hvm driver used.
Eventhandler did not work because IRQ was delivered to another vcpu by
irqbalance.
Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>
Signed-off-by: Tomonari Horikoshi <t.horikoshi@jp.fujitsu.com>
Olaf Hering
Mike Meyer
Ian Campbell
Jan Beulich
Keir Fraser
Keir Fraser
Alex Williamson
Keir Fraser
kfraser@localhost.localdomain
Steven Hand
Tim Deegan
awilliam@xenbuild2.aw
kaf24@firebug.cl.cam.ac.uk
Ian Campbell