Attached patch makes libxc build again on NetBSD after the recent rework.
[ Modified by iwj:
I changed the name of the new make variable from LIBDL to DLOPEN_LIBS.
The latter conforms to the naming scheme for similar variables found
in config/*.mk - PTHREAD_LIBS et al.
Also I moved the setting of the variable to -dl from Linux to StdGNU
(which makes it apply more widely) and also added it to SunOS.mk
(based on pure guesswork). ]
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
(1) When updating/checking p2m type for mem_sharing, we must hold shr_lock
(2) For nominate operation, if the page is already nominated, return the
handle from page_info->shr_handle
(3) For unshare operation, it is possible that multiple users unshare a
page via hvm_hap_nested_page_fault() at the same time. If the page
is already un-shared by someone else, simply return success.
Signed-off-by: Jui-Hao Chiang <juihaochiang@gmail.com>
Signed-off-by: Han-Lin Li <Han-Lin.Li@itri.org.tw>
Acked-by: Tim Deegan <Tim.Deegan@citrix.com>
This patch adds target_ram in device_model_info structure, to be used in
libxl_build_device_model_args_new. Qemu upstream needs to know about it.
It introduces also libxl__sizekb_to_mb to convert size from KB to MB by
rounding up the result.
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
drbd's block-drbd script handles all of the details that c/s 20158
introduces within xend :-(. This c/s should be reverted as it causes
a regression. Jim Fehlig tested drbd without 20158 and it works fine.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Tested-by: Jim Fehlig <jfehlig@novell.com>
Switch to a state machine parser since it's easier to handle all these
exotic cases without segfaulting. NULL physpaths are now allowed and a
dodgy hack is introduced to skip over the "ioemu:" prefix for a
virtpath. Also fixes a leak of buf2.
Signed-off-by: Gianni Tedesco <gianni.tedesco@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Both writing of certain MSRs and VCPUOP_get_physid make sense also for
dynamically (perhaps temporarily) pinned vcpus.
Likely a couple of other MSR writes (MSR_K8_HWCR, MSR_AMD64_NB_CFG,
MSR_FAM10H_MMIO_CONF_BASE) would make sense to be restricted by an
is_pinned() check too, possibly also some MSR reads.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Add a missing line to record the type passed into
register_io_handler()
Without this line, the BUFFERED_IO handler was never called.
Signed-off-by: Wei Gang <gang.wei@intel.com>
Allow dom0 to write MSR IA32_ENERGY_PERF_BIAS
There is a new hardware feature, which lets system software to set
Energy Performance Preference. This is a opaque knob in the form of
IA32_ENERGY_PERF_BIAS MSR, which has a 4 bit Energy Performance
Preference Hint.
The support for this feature is indicated by CPUID.06H.ECX.bit3. Refer
to Intel Architectures Software Developer's Manual for more info.
Let dom0 tools to control it.
Signed-off-by: Wei Gang <gang.wei@intel.com>
Flush filter is not reliably supported by any processor, we already
have code to unconditionally disable the filter, so we don't need the
command-line config option. Remove it.
Signed-off-by: Keir Fraser <keir@xen.org>
Avoid applying to the bridge and physical network device.
This should un-break dom0 networking in the old xend-creates-bridge
setup (problem introduced in 22493:937488219719).
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
This avoids the immediate problem (calling set_p2m_entry() without the
lock held) but leaves the underlying problem (no consistent locking
order between page-sharing and p2m code) for later.
Signed-off-by: Jui-Hao Chiang <juihaochiang@gmail.com>
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Implement the test cases. Each of cases will call the common function,
then call mce inject tool. README for Xen MCE test suite, include the
framwork and test instruction.
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Signed-off-by: Haicheng Li<haicheng.li@intel.com>
Signed-off-by: Xudong Hao <xudong.hao@intel.com>
Implement some common shell functions and variable definitions are
defined to be used by test cases Verify fuctions include domain0 user
space tool mcelog, Xen dmesg and guest kernel log verification.
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Signed-off-by: Haicheng Li<haicheng.li@intel.com>
Signed-off-by: Xudong Hao <xudong.hao@intel.com>
A software MCE injection tool, which is based on Xen MCE injection
mechanism. It fake MCE error and inject this error to a assigned
Domain Physical Address. Makefile make sure the tool can be built on
Xen. A README explain the usage for this tool.
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Signed-off-by: Haicheng Li<haicheng.li@intel.com>
Signed-off-by: Xudong Hao <xudong.hao@intel.com>
Resolves build error:
/usr/bin/ld: xenctrl_osdep_ENOSYS.o: relocation R_X86_64_32
against `a local symbol' can not be used when making a shared
object; recompile with -fPIC
xenctrl_osdep_ENOSYS.o: could not read symbols: Bad value
collect2: ld returned 1 exit status
Clean up object files correctly too.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Fix leaking of mapped domain pages (root_entry and ctxt_entry when
falling out of the level traversing loop). Do this by re-arranging
things slightly so that a mapping is retained only as long as it
really is needed.
Fix the failure to use map_domain_page() in the level traversing loop
of the function.
Add a mssing return statement in one of the error paths.
Also I wonder whether not being able to call print_vtd_entries() from
iommu_page_fault_do_one() in ix86 is still correct, now that
map_domain_page() is IRQ safe.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
c/s 22538:a3a29e67aa7e, having got applied in a form different from
the one submitted, resulted in the calls to
console_{start,end}_log_everything() getting removed without
replacement. Add them back since, other than run_all_keyhandlers(),
this doesn't run with log-everything already in effect.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
... decreasing cache footprint. As a prerequisite this requires making
cmdline_parse() a little more flexible.
Also remove a few variables altogether, and adjust sections
annotations for several others.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Keir Fraser <keir@xen.org>
Fold compiler generated sections (mostly due to -fPIC on x86-64) into
the general .data and .data.read_mostly sections.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
... thus allowing to make the entries half their current size. Rather
than adjusting all instances to the new layout, abstract the
construction the table entries via a macro (paralleling a similar one
in recent Linux).
Also change the name of the section (to allow easier detection of
missed cases) and merge the final resulting output sections into
.data.read_mostly.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Rather than having this general library function only on ia64, move it
into common code, to be used by x86 exception table sorting too.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
While the corresponding implementation has been in our trees for quite
a while, it's in a state that doesn't make it suitable for submission,
and the original author having left the company leaves open to find
someone to complete this work. Yet to prevent problems with other
interface extensions we'd like to keep the slot in the number space
reserved for the purpose it has been serving here.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
In specific, it fixes the following issues:
1. The sub-leaves of CPUID:0x0000000D aren't contiguous. Hypervisor
shouldn't use register values to stop the enumeration. This patch
moves checking on XSAVE sub-leaves out of if-else statement. It also
bumps up sub-leaves to 63.
2. It creates a common function for xsave.
3. The main leaf 0 of CPUID:0x0000000D in current Xen is broken,
especially ECX and EBX registers. This patch cleans it up.
4. It adds support to detects EBX value of CPUID:0x0000000D main leaf
0 on-the-fly.
Signed-off-by: Wei Huang2 <wei.huang2@amd.com>
Allow the "unbalance tolerance" -- the amount of difference between
two runqueues that will be allowed before rebalancing -- to differ
depending on how busy the runqueue is. If it's less than 100%,
default to a difference of 1.0; if it's more than 100%, default to a
tolerance of 0.125.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
This is a first-cut at getting load balancing. I'm first working on
looking at behavior I want to get correct; then, once I know what kind
of behavior works well, then I'll work on getting it efficient.
The general idea is when balancing runqueues, look for the runqueue
whose loadavg is the most different from ours (higher or lower).
Then, look for a transaction which will bring the loads closest
together: either pushing a vcpu, pulling a vcpu, or swapping them.
Use the per-vcpu load to calculate the expected load after the
exchange.
The current algorithm looks at every combination, which is O(N^2).
That's not going to be suitable for workloads with large numbers of
vcpus (such as highly consolidated VDI deployments). I'll make a more
efficient algorithm once I've experimented and determined what I think
is the best load-balancing behavior.
At the moment, balance from a runqueue every time the credit resets.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Put in infrastructure to allow a vcpu to requeset to migrate to a
specific runqueue. This will allow a load balancer to choose running
VMs to migrate, and know they will go where expected when the VM is
descheduled.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
As vcpus are migrated, track how we expect the load to change. This
helps smooth migrations when the balancing doesn't take immediate
effect on the load average. In theory, if vcpu activity remains
constant, then the measured avgload should converge to the balanced
avgload.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Track the amount of load contributed by a particular vcpu, to help
us make informed decisions about what will happen if we make a move.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Because alloc_pdata() is called before the cpu layout information is
available, we grab a callback to the newly-created CPU_STARTING
notifier.
cpu 0 doesn't get a callback, so we simply hard-code it to runqueue 0.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
In preparation for multiple runqueues, add a simple cpu picker that
will look for
the runqueue with the lowest instantaneous load to assign the vcpu to.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Add hooks in the various places to detect vcpus becoming active or
inactive. At the moment, record only instantaneous runqueue load;
but this lays the groundwork for having a load average.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
In preparation for cross-runqueue migration, make changes to make that
more robust.
Changes include:
* An up-pointer from the svc struct to the runqueue it's assigned to
* Explicit runqueue assign/desassings, with appropriate ASSERTs
* cpu_pick will de-assign a vcpu from a runqueue if it's migrating,
and wake will re-assign it
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Several refactorizations:
* Add prv->initialized cpu mask
* Replace prv->runq_count with active_queue mask
* Replace rqd->cpu_min,cpu_mask with active cpu mask
* Put locks in the runqueue structure, rather than borrowing the
existing cpu locks
* init() initializes all runqueues to NULL, inactive, and maps all
pcpus to runqueue -q
* alloc_pcpu() will add cpus to runqueues, "activating" the runqueue
if necessary. All cpus are currently assigned to runqueue 0.
End-to-end behavior of the system should remain largely the same.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Eamon Walsh
Ian Jackson
Christoph Egger
Tim Deegan
Anthony PERARD
Yang Z Zhang
Gianni Tedesco
Keir Fraser
Mukesh Rathor
Ian Campbell