operation allows retrieval of the domain info structures for all domains
in one hypercall.
Using a small test program, on a system with 97 domains with
non-contiguous domain IDs, I found that with this hypercall I could
retrieve the full array of info structures 12840 times per second, an
improvement from 2380 times per second with the DOM0_GETDOMAININFO op.
The patch also adds a libxc wrapper for this new hypercall.
Signed-off-by: Josh Triplett <josht@us.ibm.com>
Merge freefall.cl.cam.ac.uk:/auto/groups/xeno-xenod/BK/xen-unstable.bk
into freefall.cl.cam.ac.uk:/auto/groups/xeno/users/iap10/xeno-clone/xen-unstable.bk
[PATCH] RE: [Xen-devel] DOM0_GETDOMAININFO intended behavior
Ok... now that I (unintentionally) went overboard on this, why not just
document how it works and leave it as is?
signed-off-by: dsteklof@us.ibm.com
signed-off-by: ian@xensource.com
xen.h, image.py, XendDomainInfo.py, xc.c, xc_linux_build.c, xc.h:
Create store page for domains and plumb through to python.
XendDomainInfo.py:
Cleanup comments.
Signed-off-by: Mike Wray <mike.wray@hp.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
More console cleanups. The console ring now overwrites its tail when
it fills, rather than stop recording output. The guest serial output
is only allowed to half-fill the serial output buffer, and now
respects hypercall preemption requests.
Signed-off-by: Keir Fraser <keir@xensource.com>
Rationalise debugger stuff in the tree.
Within Xen itself, remove PDB references and fold into domu_debug.
When domu_debug hits a breakpoint, it pauses all vcpus of the domain
and raises VIRQ_DEBUGGER (not VIRQ_PDB). The debugger in domain0 can
either poll pause status or bind to VIRQ_DEBUGGER. Before debugging
a breakpointed domain the debugger should issue PAUSEDOMAIN itself, or
it is not guaranteed to see paused state of the domain!
Outside Xen there's a new dir tools/debugger, containing gdb, pdb and
a new library libxendebug (used by pdb). I also think the ptrace
functions in libxc also ought to be moved out: either to libxendebug
or to a new library libxenptrace.
Signed-off-by: Keir Fraser <keir@xensource.com>
Implement the parts of vm save which need interaction with xend
as part of xend, instead of using xfrd.
Execute xc_linux_save in a seperate process so that it can't
crash xend. Also handle errors passed from xc_linux_save.
xen_domain.c:
Disable save in xfrd.
xc_save.c:
new file
Makefile:
Add xc_save.
XendDomainInfo.py:
Add suspended state and threading Condition with notification, allowing
easy waiting for state changes.
XendDomain.py:
Implement the parts of vm save which need interaction with xend
as part of xend, instead of using xfrd. Set state to "suspended"
when detecting a suspended domain.
Fix reading output from subprocesses.
Fix ValueError in xen_domain().
xc.c:
Remove python binding for xc_linux_save.
xc_linux_save.c:
Implement the parts of vm save which need interaction with xend
as part of xend, instead of using xfrd. Also run xc_linux_save
in a seperate process.
xc_linux_restore.c:
Flush output so that xend picks it up timely.
Also disable debug output again.
xc.h:
Update xc_linux_save prototype and fix comments for xc_linux_{save,restore}.
ignore:
Add tools/xcutils/xc_save.
xpopen.py:
Exit with 127 if exec fails.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
XendDomain.py, xc.c, xc_linux_restore.c, xc.h:
Move read of pfn to mfn frame list into xc_linux_restore.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
XendDomainInfo.py, XendDomain.py, xc.c, xc_linux_restore.c, xc.h:
Implement the parts of vm restore which need interaction with xend
as part of xend, instead of using xfrd. The restore functionality
using xfrd was broken anyway since xend didn't handle the callback
channel from xfrd correctly.
xen_domain.c:
Disable restore in xfrd.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
XendDomainInfo.py, xc.c, xc_linux_restore.c, xc_domain.c, xc.h:
Split pincpu, setcpuweight, setmaxmem and memory increase reservation
out of xc_domain_create. Add glue to get the missing functions exposed
to python and use.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
[PATCH] [PATCH] libxc: mmap doesn't return NULL on error...
Hi, was reading libxc code, and noticed this. Patch is bigger than
strictly necessary due to indent adjust.
Against latest bk.
Rusty.
Many files:
Merge interface changes from previous 'Split out context fetching into
separate DOM0 op' and 'xen,tools: pincpu use vcpu and cpumap_t' checkins.
xc_linux_save.c:
Undo incorrect change from previous patch.
xc.h, xc_domain.c:
Cleanup whitespace.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
Split out context fetching into separate DOM0 op
make GETDOMAININFO a little more sensible with respect to MP
make coredump dump all cpu contexts
Signed-off-by: Kip Macy <kmacy@netapp.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
[PATCH] xen,tools: pincpu use vcpu and cpumap_t
The following patch updates the dom0 pincpu operation to read the VCPU
value from the xend interface rather than hard-coding the exec_domain to
0. This prevented pinning VCPUS other than 0 to a particular cpu. The
pincpu cpu argument is replaced with cpumap, a u64 bitmap representing
which CPUs a VCPU can use.
I added the number of VCPUS to the main xm list output and also included
a new sub-option to xm list to display the VCPU to CPU mapping. While
working on the pincpu code, I fixed an out-of-bounds indexing for the
pincpu operation that wasn't previously exposed since the
vcpu/exec_domain value was hard-coded to 0.
Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
Remove memory and cpu parameters from DOM0_CREATEDOMAIN, and remove
DOM0_SETINITIALMEM. You can get the same effect via PINCPU,
SETMAXMEM, and do_mem_op(increase_reservation).
Signed-off-by: Keir Fraser <keir@xensource.com>
Right now, the memory for the 1:1 physical mode page tables comes from the
VMX domain's memory. With this change, when the user asks for a domain with
M Megabytes of memory, we actually allocate M+N megabytes in xend, where
N is the memory for the page table pages.
This simplifies the code in the device models that maps guest memory (we
now map all of it) and the E820 map can also give the full M megabytes to
the guest.
Signed-off-by: Xin B Li <xin.b.li@intel.com>
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: ian.pratt@cl.cam.ac.uk
Add an optional parameter (vcpus) to the xc_linux_build function replacing
the getenv() previously used and removing the requirement of using maxcpus
kernel parameter to limit the number of virtual cpus a guest uses. The value
can now be controlled in the domain configuration files.
The default value of 1 is set in XenDomainInfo.py but is overridden by
parsing the config value.
Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
Merge labyrinth.cl.cam.ac.uk:/auto/groups/xeno-xenod/BK/xen-2.0-testing.bk
into labyrinth.cl.cam.ac.uk:/auto/anfs/scratch/labyrinth/iap10/xeno-clone/xen-unstable.bk
The getdomaininfo hypercall now listens to the exec_domain parameter
that was already passed to it, and performs some basic sanity checking.
Added exec_domain (aka vcpu) parameters to xc_domain_getfullinfo()
and xc_domain_get_cpu_usage().
