Keir Fraser [Thu, 27 May 2010 07:21:24 +0000 (08:21 +0100)]
xenconsoled: Discard guest console data in bigger chunks
Discard guest console data in bigger chunks so that there are fewer
discontinuities in the console data. Also avoid discarding data if
space is available at the front of the buffer by reclaiming that
space.
Patch from: Christian Limpach <Christian.Limpach@citrix.com> Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
Keir Fraser [Wed, 26 May 2010 09:52:15 +0000 (10:52 +0100)]
pyGrub: Use proper bootloader class when entering command manually
Use the proper bootloader class when entering the boot commands
manually (i.e. using the 'c' option). Before this patch the bootloader
was always treated to be Grub but when user is using Grub2/ExtLinux or
Lilo it's rather confusing. After applying this patch the proper
bootloader image class is being used, e.g. Grub2Image for Grub2
etc. when you define the boot commands manually using the 'c' command
in pyGrub.
Also, fix for using isconfig has been applied since if there is not fs
set in the run_grub() method the read_config() would fail since it's
trying to access undefined self.cf which is now being set to parser()
from cfg_list.
Signed-off-by: Michal Novotny <minovotn@redhat.com> Acked-by: Ian Campbell <ian.campbell@citrix.com>
Keir Fraser [Wed, 26 May 2010 07:15:31 +0000 (08:15 +0100)]
tools: Fix time offset when localtime=0
localtime can be stored in vm config as a string, resulting in
incorrect calculation of rtc_timeoffset. Cast localtime to int
to ensure rtc_timeoffset is calculated properly.
Keir Fraser [Wed, 26 May 2010 07:13:47 +0000 (08:13 +0100)]
xl: Some small fixes
- When use mem-set, I got suspicious error output:
# xl mem-set 1 256g
setting domid 1 memory to : 268435456
[0] libxl.c:2535:libxl_set_memory_target: memory_dynamic_max must be
less than or equal to memory_static_max
: Success
- String generated by strdup() should be freed
- When using 'xl help', mem-max and mem-set's output is not as intend,
and it also breaks bash completion, fix it.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Keir Fraser [Wed, 26 May 2010 07:12:15 +0000 (08:12 +0100)]
xl: allow nameless domains to be named
At present, find_domain() will exit(2) if you specify a domain by
number, but that domain doesn't have a corresponding name. However,
nothing seem to critically depend on common_domname being set, and the
test prevents dom0 or other nameless domains from being named. So
just remove the check.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Keir Fraser [Wed, 26 May 2010 07:01:21 +0000 (08:01 +0100)]
x86 shadow: Avoid remove-all-shadows after shadow teardown
If dom0 alters the p2m of a domain that's being destroyed, we can end
up doing a remove-all-shadows after the shadow hash table has been
freed. Since no hash table implies no shadows, just return
immediately.
Keir Fraser [Wed, 26 May 2010 06:59:52 +0000 (07:59 +0100)]
hvm: Handle extreme wallclock offsets safely.
When a VM's wallclock offset is negative enough, gmtime() can be called
with an underflowed uint64, which it then tries to divide into years
by subtraction. Handle the input as a 40-bit signed integer instead.
Keir Fraser [Tue, 25 May 2010 08:08:34 +0000 (09:08 +0100)]
xend: Add interface name definition support for xend-relocation-address
Add a new feature for xend-relocation-address option to support
definition by interface name which can be useful for people having
e.g. a cluster environment with multiple network interfaces on all of
the machines with only one reserved to be registered to a private
cluster network. This way they won't need to specify the relocation
address manually on all the machines but just simple providing the
interface name to get the IP address from would do the job (all the
machines have to have this interface named the same to make it
working, of course).
Technically it reads the interface name and gets its IP address using
ioctl call of SIOCGIFADDR and if the interface doesn't have the
address, i.e. if non-existing interface or hostname was provided the
original ifname is returned to preserve the old behaviour.
Signed-off-by: Michal Novotny <minovotn@redhat.com>
Keir Fraser [Sat, 22 May 2010 05:31:47 +0000 (06:31 +0100)]
x86: TSC handling cleanups (version 2)
"I am removing the tsc_scaled variable that is never actually used
because when tsc needs to be scaled vtsc is 1. I am also making this
more explicit in tsc_set_info. I am also removing hvm_domain.gtsc_khz
that is a duplicate of d->arch.tsc_khz. I am using scale_delta(delta,
&d->arch.ns_to_vtsc) to scale the tsc value before returning it to the
guest like in the pv case. I added a feature flag to specify that the
pvclock algorithm is safe to be used in an HVM guest so that the guest
can now use it without hanging."
Keir Fraser [Fri, 21 May 2010 14:25:10 +0000 (15:25 +0100)]
xl: fix block-attach command parsing
Fix two command-line parsing problems:
- the argc check is wrong: it must be provided with the frontend
device
- the ro/rw mode is optional, so default to rw if it is absent
Also, update the usage message accordingly.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Keir Fraser [Thu, 20 May 2010 13:12:14 +0000 (14:12 +0100)]
ocaml: fix ocaml xc compilation on 32 bit
cc1: warnings being treated as errors
xc_lib.c: In function 'xc_domain_get_pfn_list':
xc_lib.c:1217: error: assignment from incompatible pointer type
The XEN_DOMCTL_getmemlist interface has been 32/64 invariante since
13594:30af6cfdb05c and uint64_t is now the correct type for the PFN
list on all word sizes.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Keir Fraser [Wed, 19 May 2010 14:42:03 +0000 (15:42 +0100)]
x86: Streamline the CPU early boot process.
Mainly this involves getting rid of a bunch of cpumasks and replacing
with a single 'cpu_state' enumeration to track progress and allow
master-slave handshaking.
Cleaning this stuff up is a prerequisite for safely handling slave
failure (e.g., out of memory, invalid slave CPU capabilities,
...). This will get fixed up in a future patch.
Keir Fraser [Wed, 19 May 2010 07:22:06 +0000 (08:22 +0100)]
VT-d: Fix ATS enabling for device assignment
Currently, Xen only enables ATS in Xen booting. When an ATS capable
device is assigned to guest, ATS is actually not enabled because FLR
before assignment causes it to be disabled. Thus ATS cannot be used in
guest. This patch enables ATS in domain_context_mapping. This ensures
ATS is enabled in assignment because FLR is earlier than
domain_context_mapping call. Therefore ATS can be used in guest. This
patch also implements disable_ats_device to disable ATS when the
device is deassigned from a domain.
Signed-off-by: Weidong Han <weidong.han@intel.com>
Keir Fraser [Wed, 19 May 2010 07:20:46 +0000 (08:20 +0100)]
libxl: Compilation and other small fixes
* Some of the library functions such as fscanf, system, and asprintf
are declared with warn_unused_result (ubuntu server 9.10), causing
compilation errors in libxl.
* When using asprintf, the caller is responsible for freeing the
memory.
* memset takes wrong size argument in one of the places (caught by
a builtin gcc check).
Keir Fraser [Tue, 18 May 2010 14:05:54 +0000 (15:05 +0100)]
x86: Pull dynamic memory allocation out of do_boot_cpu().
This has two advantages:
(a) We can move the allocations to a context where we can handle
failure.
(b) We can implement matching deallocations on CPU offline.
Only the idle vcpu structure is now not freed on CPU offline. This
probably does not really matter.
Keir Fraser [Tue, 18 May 2010 10:38:12 +0000 (11:38 +0100)]
xl: allow scaling suffix on memory sizes in mem-set and mem-max
Allow mem-set and mem-max to take 'b', 'k', 'm', 'g' and 't' as
scaling suffixes for bytes, kilobytes, mega, etc. An unadorned number
is still treated as kilobytes so no existing users should be affected.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Keir Fraser [Tue, 18 May 2010 10:24:04 +0000 (11:24 +0100)]
x86: Allow PV superpages to work with live migration
PV superpages currently do not work with live migration. They fall
over dead when the shadow page table is enabled for dirty tracking.
The HVM support for superpages in this code has been tested and found
to work just fine for PV superpages. This patch modifies the test
macro to allow the code to work with PV superpages.
Keir Fraser [Tue, 18 May 2010 10:21:25 +0000 (11:21 +0100)]
svm: Fix for AMD erratum 383 on Family 10h CPUs
This patches implements the workaround of AMD erratum 383 on family
10h CPUs. It destroys the guest VM when a MC error with a special
pattern is detected. Without this patch, a guest VM failure can
potentially crash Xen hypervisor and the whole system. The erratum
will be published in next version of guide.
Keir Fraser [Mon, 17 May 2010 15:28:56 +0000 (16:28 +0100)]
x86: Remove special-case paths for start-of-day SMP bringup.
All CPUs are now brought up in __cpu_up(), in the correct order for
cpu-bringup notifiers.
Notably ganged TSC calibration is removed. This was another
start-of-day-specific aspect of bringup. If we really need
calibration, I think we can come up with an efficient method for APs
to calibrate themselves against PIT during their bringup (even
asynchronously, if required for efficiency).
Keir Fraser [Mon, 17 May 2010 10:05:21 +0000 (11:05 +0100)]
intel_txt: to fix intel txt S3 resume failure since c/s 21108
This patch is to fix S3 resume failure with Intel TXT/tboot launched,
brought by c/s 21108. Don't printk anything between two
tboot_gen_xenheap_integrity() calls for release build or debug build.
Or else xen heap will be changed, which causes that memory integrity
will be lost on S3 resume.
Keir Fraser [Fri, 14 May 2010 16:07:52 +0000 (17:07 +0100)]
Move cpu hotplug routines into common cpu.c file.
Also simplify the locking (reverting to use if spin_trylock, as
returning EBUSY/EAGAIN seems unavoidable after all). In particular
this should continue to ensure that stop_machine_run() does not have
cpu_online_map change under its feet.
Keir Fraser [Fri, 14 May 2010 06:53:16 +0000 (07:53 +0100)]
libxl: Adjustments to memset/memmax handling
I think xl memset should change the memory currently used by the guest
and xl memmax should change the size of the guest's address space and
not the population. For this reason libxl_set_memory_target should
provide a way to enforce the memory target, calling
xc_domain_setmaxmem. On the other hand xl memmax shouldn't call
xc_domain_setmaxmem because that is the upper bound of the memory
reservation, it should just change static-max, that at the moment
wouldn't do much, but we can imagine that in the future could trigger
something useful in the guest.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Acked-by: Jonathan Knowles <Jonathan.Knowles@eu.citrix.com>=20
Keir Fraser [Thu, 13 May 2010 09:09:02 +0000 (10:09 +0100)]
Even 'dummy' domains (e.g., dom_xen a.k.a. DOMID_XEN) must have valid I/O caps.
Ensure the rangesets are always initialised. Certain (privileged)
invocations of hypercalls such as mmu_update can end up interrogating
these special domains for possible I/O capabilities.
projects / xen.git / log