Also update the code in tools to create the device node if udev fails.
The tools now read the sysfs system to find the minor number needed.
Original patch from Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
1. platform_op -- used by dom0 kernel to perform actions on the
hardware platform (e.g., MTRR access, microcode update, platform
quirks, ...)
2. domctl -- used by management tools to control a specified domain
3. sysctl -- used by management tools for system-wide actions
Benefits include more sensible factoring of actions to
hypercalls. Also allows tool compatibility to be tracked separately
from the dom0 kernel. The assumption is that it will be easier to
replace libxenctrl, libxenguest and Xen as a matched set if the
dom0 kernel does not need to be replaced too (e.g., because that
would require vendor revalidation).
From here on we hope to maintain dom0 kernel compatibility. This
promise is not extended to tool compatibility beyond the existing
guarantee that compatibility will not be broken within a three-level
stable release [3.0.2, 3.0.3, etc.].
Signed-off-by: Keir Fraser <keir@xensource.com>
correct tool to use for hardware perfctr monitoring now.
Also remove unused xc_msr MSR accessor functions from libxenctrl.
Signed-off-by: Keir Fraser <keir@xensource.com>
Split and move xc_ia64_stubs.c into ia64/xc_ia64_hvm_build.c and
ia64/xc_ia64_stubs.c
Creates ia64/Makefile.
Clean up (static in const) in xc_ia64_hvm_build.c
Signed-off-by: Tristan Gingold <tristan.gingold@bull.net>
[whitespace cleanups in new files]
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
It is quite minimal
in its approach, satisfying the purposes of the paravirtualized
NetWare operating system as well as any others that expect the time
base to be provided in localtime.
Signed-off-by: Bruce Rogers <brogers@novell.com>
No longer open the device as non-blocking: all reads immediately follow
a select() on the device indicating it's ready to read.
Signed-off-by: John Levon <john.levon@sun.com>
pae_pgdir_above_4gb tp guests that have enabled this vmassist.
Control tools ensure all PAE page directories are below 4GB
unless the vmassist is enabled (triggered via an extended-cr3
option in guest Elf header).
Signed-off-by: Keir Fraser <keir@xensource.com>
**NOTE**: This obviates the need for lowmem_emergency_pool.
Unpriv guests no longer need to be able to allocate memory
below 4GB for PAE PDPTs.
Signed-off-by: Keir Fraser <keir@xensource.com>
with command-specific request structures. It aligns the ACM
hypercalls with the way parameters are passed in the event channel
hypercalls.
Advantages include backward-compatibility regarding old guests when
new calls are added and clarity of the code.
Signed-off by: Reiner Sailer <sailer@us.ibm.com>
1. xenctrl.h needs to include stddef.h to define size_t
2. tbctl is broken -- remove it since xenmon and xentrace
both automatcially enable tracing now
3. Fix setsize after xc_tbug interface changes
Signed-off-by: Keir Fraser <keir@xensource.com>
Make header path for kernel's privcmd/evtchn headers generic.
Remove pointless xi_*() interface that was using private libxc
interfaces.
Signed-off-by: John Levon <john.levon@sun.com>
paravirtualized and fully virtualized. This approach uses the new
sched_op to handle other domains than the current domain. The new
code, SCHEDOP_remote_shutdown, is very much like SCHEDOP_shutdown, but
is called with the id of the domain which is to be shut down. This
allows fully virtualized shutdown and para-virtualized shutdown to be
identical from that point forward.
A paravirtualized domain uses sched_op to shut down and set the reason
code. This will send a VIRQ_DOM_EXC, which can be handled in dom0 by
control software. In some ways, this resembles SIGCHILD/waitpid, and
is a reasonable model.
The fully virtualized case has qemu invoke xm directly. This is a
different path than paravirtualized. It also removes decision and
policy making choices from the rest of the control software and places
it within qemu. When any dom0 logic eventually gets a VIRQ_DOM_EXC,
the information about the domain is gone having been destroyed by xm.
A libxenctrl wrapper, xc_shutdown_domain has been added and qemu now
calls it.
As a freebie, #if 0 some very verbose logging code in qemu. Totally
unrelated, but as long as I was there...
Signed-off-by: Ben Thomas <ben@virtualiron.com>
output. Refactor the code slightly to allow more user-specified
control. This is done by adding a parallel
xc_domain_dumpcore_via_callback, which allows the specification of a
callback routine and an opaque argument block. The existing dumpcore
routine is modified to use the callback for all write operations and
to turn the single seek into a small write (it's for page alignment).
Signed-off-by: Ben Thomas <bthomas@virtualiron.com>
The xen core files record a magic number,
but when they are loaded it isn't checked.
This patch resolves this.
Signed-Off-By: Horms <horms@verge.net.au>
* xc_ptrace
- Merge xc_ptrace_core into xc_ptrace
- ATTACH now reads the data argument. If non-zero then
a corefile is being debuged. Otherwise a thread has
been attached to. This allows xc_waitdomain_core() or
xc_waitdomain() to be called as appropriate in
subsequent xc_ptrace() calls.
* xc_waitdomain
- Rename xc_waitdomain (xc_ptrace.c version) __xc_waitdomain
- Rename xc_waitdomain (xc_ptrace_core.c version) xc_waitdomain_core
- Create xc_waitdomain (in xc_ptrace.c), a wrapper for __xc_waitdomain
and xc_waitdomain_core.
Consolidation seemed difficult but ctxt needs to be
passed into xc_waitdomain_core or made global.
Alternatively, xc_waitdomain_core could be moved into xc_ptrace.c,
but this seems messy.
* map_domain_va
- Rename map_domain_va (xc_ptrace_core.c version) map_domain_va_core
- Have it accept ctxt, like xc_waitdomain_core
* myptrace and myxcwait (linux-xen-low.c)
Removed, call the now generic xc_ptrace() and xc_waitdomain() instead
When calling xc_ptrace ATTACH, if a corefile is in use, a fd will
be passed, otherwise a pid. The fd part is important, as this
is saved internally in xc_ptrace_core.c, and passed to xc_waitdomain_core()
as neccessary. Pereviously xc_waitdomain_core() received a pid and
thus could not open the corefile.
Signed-Off-By: Horms <horms@verge.net.au>
move the shared info and grant table pfns into that block. This
allows us to remove the get_gnttablist dom0 op, and simplifies the
domain creation code slightly. Having the reserved block managed by
Xen may also make it slightly easier to handle the case where the
grant table needs to be extended at run time.
Suggested-by: kaf24
Signed-off-by: Steven Smith, sos22@cam.ac.uk
I/O memory and physical interrupts, under control
of domain0. Capabilities are maintained as rangesets
in Xen.
Signed-off-by: Ryan Wilson <hap9@epoch.ncsc.mil>
Signed-off-by: Keir Fraser <keir@xensource.com>
To support this add xc_translate_foreign_address to libxc. This function
walks page tables and translates virtual addresses using a given domain
and vcpu page table.
Signed-off-by: Ian Campbell <Ian.Campbell@XenSource.com>
separate fields. Update callers for new interface. Also
use int16_t as standard error code type on all public
interfaces.
Signed-off-by: Keir Fraser <keir@xensource.com>
This includes quite a few cleanups / refactoring of the old code, some
of which is intended to prepare for 64-bit save/restore.
Signed-off-by: Steven Hand <steven@xensource.com>
be enabled and disabled dynamically while the system is running. The
existing DOM0_TBUFCONTROL hypercall is used, and three new operations
have been added: enable, disable, and set_size. This is to address
concerns that use of the trace buffers impacts system performance.
The initial value of opt_tbuf_size is set to zero, so that trace
buffers remain disabled by default. They can be enabled as they used
to be, by adding tbuf_size= to the xen command line at boot time. They
can also be turned on and off any time when the system is running. The
size of the trace buffer allocation can also be changed dynamically
while the system is running. The trace buffers may be completely
deallocated by setting the size to zero. No change in buffer size can
be done while tracing is enabled;
Other Changes made:
- Update the constants in tools/xentrace/formats to match those in
public/trace.h
- libxc functions for enable/disable, get/set size
Still left to do:
- remove all ifdef's for trace buffers and the 'trace' build option
- xm command to do enable/disable trace buffers and get/set size
Signed-off-by: Rob Gardner <rob.gardner@hp.com>
that loop completely -- the xc_init_store, initDomainStore calls can all go.
Have xenstored understand where the local domain information goes. Xend no
longer has to generate a path and pass it to xenstored through
xs_introduce_domain -- we just allow xenstored to generate the path, and then
call GetDomainPath later. There is still some work required to tidy this up.
Change the uuid module to generate uuids as lists of bytes, not in the
stringified form. Added a unit test for that module.
Change the semantics of Xend restart, relying on these changes to the
xenstored semantics and earlier changes to add an opaque handle to the
hypervisor's domain-specific data block. The semantics are now clearer, as
Xend can validate whether the details in the store match the current live
domain.
Added a usage statement to xenstored.
Some of this code is by Steven Hand.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
n_vcpu field from GETDOMAININFO: replaced with
nr_online_vcpus and max_vcpu_id (both plumbed through to
Python).
TODO: Remove 'vcpus' entry in getdomaininfo Python
dictionary.
TODO: Don't represent 'cpumap' as a bitmap in Python.
It would be more sensible to represent as a list
of integer CPU numbers.
Signed-off-by: Keir Fraser <keir@xensource.com>
creation, allow it to be changed after creation via
DOM0_SETDOMAINHANDLE operation (and libxc
xc_domain_sethandle, and via Pyhton wrapper fn).
Signed-off-by: Keir Fraser <keir@xensource.com>
