do_privcmd() was only ever used by do_xen_hypercall() so remove it.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
This patch introduces the basic infrastructure and uses it for open
and close operations on privcmd, evtchn and gnttab devices.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson.citrix.com>
The xc_interface previously passed to xc_gnttab_* was only used for
logging which can now be done via the xc_gnttab handle instead.
This makes the interface consistent with the changes made to the main
interface in 21483:779c0ef9682c.
Also update QEMU_TAG to pull in the corresponding qemu change.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
This makes the interface consistent with the changes made to the main
interface in 21483:779c0ef9682c.
Also fix some references to "struct xc_interface" which should have
been simply "xc_interface" in tools/xenpaging, and update QEMU_TAG to
pull in the corresponding qemu change.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
They simply make hypercalls and perform other operations via the
abstract interface. Create xc_gnttab.c and move those functions there.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Since 22187:c41252a55a0a we have been installing our example
xencommons settings file in either /etc/sysconfig or /etc/default,
depending on whether /etc/sysconfig exists.
However I omitted to add the code to /etc/init.d/xencommons to
actually read either version of the file, although every other init
script seems to have it.
An effect of this misplaced/unread file is that the automatic tests
don't cause xenconsoled to collect serial logs, because the tester
edits whichever file actually exists.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Currently sharing these page tables causes a hang on boot on some
hardware. Disable by default until this is resolved.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
For EPT violation resulting from an attempt to load the guest PDPTEs
as part of the execution of the MOV CR instruction, the EPT_GLA_VALID
is not valid. This situation should not happen in most situation,
since we always populate guest memory. But this is not ture for PAE
guest under the PoD/Page sharing situation. In that situation, a page
pointed by CR3 may be un-populated, and we need handle it in such
situation.
Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
Checking for RELATED,ESTABLISHED traffic being sent to a domU requires
connection tracking, which adds unexpected (to most users) load to
dom0. Heavily loaded systems can fill the conntrack tables.
So avoid this, be more liberal in what we accept, and leave it to domU
to police its own input.
Signed-off-by: Keir Fraser <keir@xen.org>
This patch uses "xsaveopt" instead of "xsave" if the feature is
supported in hardware to optimize task switch performance in Xen. It
also exposes the feature to guest VMs.
Signed-off-by: Zhang Fengzhe <fengzhe.zhang@intel.com>
These absolutely guarantee to read/write a uint*_t with a single atomic
processor instruction.
Also re-define atomic_read/atomic_write (act on atomic_t) similarly.
Signed-off-by: Keir Fraser <keir@xen.org>
... by moving the respective code out of line (into sub-section 1 of
the particular section). A few other branches could be eliminated
altogether.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
For now assume all such connections come from domain 0.
Failure to do this breaks various scripts which assume that they
operate relative to the domains "home directory".
This matches the behaviour of the ocaml xenstored.
Thanks to report from Olaf Hering.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
If the domain is destroyed (eg with xl destroy), it is possible that
the xl which is monitoring the domain for restart/preserve will not be
able to get the domain shutdown reason.
Before this patch, it would then ignore the domain death event and
carry on waiting, forever, for more events.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
22508:57907b28e51a was unsafe for mutual exclusion. There is a case
that the owner file doesn't exist yet when an atomic mkdir operation
fails.
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Attached patch implements the VMCB cleanbits SVM feature.
Upcoming AMD CPUs introduce them and they are basically hints
for the CPU which vmcb values can be re-used from the previous
VMRUN instruction.
Each bit represents a certain set of fields in the VMCB.
Setting a bit tells the cpu it can re-use the cached value
from the previous VMRUN.
Clearing a bit tells the cpu to reload the values from the given VMCB.
Signed-off-by: Wei Huang <Wei.Huang2@amd.com>
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Keir Fraser <keir@xen.org>
Basic idea is to leverage 2MB and 1GB page size support in EPT by having
VT-d using the same page tables as EPT. When EPT page table changes, flush
VT-d IOTLB cache.
Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Allen Kay <allen.m.kay@intel.com>
Ian Campbell
Ian Jackson
Keir Fraser
Olaf Hering
Christoph Egger
Kouya Shimura