When the console is connected to a domain other than dom0, the console
device's backend field should be set so the xenstore permissions for the
console device reflect the domain that will be accessing them.
Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Grant references for the xenstore and xenconsole shared pages exist, but
currently only xenstore uses these references. Change the xenconsole
daemon to prefer using the grant reference over map_foreign_range when
mapping the shared console ring.
This allows xenconsoled to be run in a domain other than dom0 if set up
correctly - for libxl, the xenstore path /tool/xenconsoled/domid
specifies the domain containing xenconsoled.
Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Although this passed my smoke-tests at commit time, I'm now seeing screen
corruption on 32-bit WinXP guests. Reverting for now. :(
Signed-off-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
Only lightly tested with a Linux HVM guest PXE boot.
Accept the defaults for the config options. Many of them are not
relevant to Xen but this matches what others (at least the Debian
SeaBIOS packages and the binary shipped by Qemu) are doing. The
Debian Xen packages are built against Debian's SeaBIOS package so
there is value in being similar.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
When the device model can't be spawned, rc variable is cleared in
device_model_spawn_outcome (libxl_dm.c).
In this case libxl will continue to create the domain and let it between life
and death.
Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
If we pass 0 as pygrub --entry argument (i.e. we want to boot first item), default value is used instead. This is dueto wrong check for range of allowed values of index - 0 is index of first item.
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
Acked-by: Matt Wilson <msw@amazon.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
In Linux select() typically supports up to 1024 file descriptors. This can be
a problem when user tries to boot up many guests. Switching to poll() has
minimum impact on existing code and has better scalibility.
pollfd array is dynamically allocated / reallocated. If the array fails to
expand, we just ignore the incoming fd.
Updated: reset *_pollfd after use.
This fixes regression 14869.
Also remove unused slave_pollfd in strcut domain.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
We shouldn't assume PCI SERR excludes IOCHK.
Once at it, also remove the doubly redundant range restriction on
"reason" - the variable already is "unsigned char".
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
Add the new MEM_EVENT_REASON_MSR event type. Works similarly
to the other register events, except event.gla always contains
the MSR address (in addition to event.gfn, which holds the value).
MEM_EVENT_REASON_MSR does not honour the HVMPME_onchangeonly bit,
as doing so would complicate the hvm_msr_write_intercept()
switch-based handling of writes for different MSR addresses,
with little added benefit.
Signed-off-by: Razvan Cojocaru <rzvncj@gmail.com>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
Support is provided for both shadow and hardware assisted paging (HAP)
modes. This code bookkeeps the set of video frame buffers (vram),
detects when the guest has modified any of those buffers and, upon request,
returns a bitmap of the modified pages.
This lets other software components re-paint the portions of the monitor
(or monitors) that have changed.
Each monitor has a frame buffer of some size at some position
in guest physical memory.
The set of frame buffers being tracked can change over time as monitors
are plugged and unplugged.
Signed-off-by: Robert Phillips <robert.phillips@citrix.com>
Acked-by: Tim Deegan <tim@xen.org>
Removed a stray #include and a few hard tabs.
Signed-off-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
... noticed while putting together the 16Tb support patches for x86.
Briefly, this (in order of the changes below)
- fixes an inefficiency in x86's context switch code (translations to/
from struct page are more involved than to/from MFNs)
- drop unnecessary MFM-to-page conversions
- drop a redundant call to destroy_xen_mappings() (an indentical call
is being made a few lines up)
- simplify a VA-to-MFN translation
- drop dead code (several occurrences)
- add a missing __init annotation
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
Linux 3.8-rc added code to do this, so we need to support this in the
hypervisor for Dom0 to be able to get at the same information as a
native kernel.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
c/s 23142:f5e8d152a565 resulted in v->arch.fpu_ctxt to point into the
save area allocated for xsave/xrstor (when they're available). The way
vcpu_restore_fpu_lazy() works (using fpu_init() for an uninitialized
vCPU only when there's no xsave support) causes this to load whatever
arch_set_info_guest() put there, irrespective of whether the i387 state
was specified to be valid in the respective input structure.
Consequently, with a cleared (al zeroes) incoming FPU context, and with
xsave available, one gets all exceptions unmasked (as opposed to to the
legacy case, where FINIT and LDMXCSR get used, masking all exceptions).
This causes e.g. para-virtualized NetWare to crash.
The behavior of arch_set_info_guest() is thus being made more hardware-
like for the FPU portion of it: Considering it to be similar to INIT,
it will leave untouched all floating point state now. An alternative
would be to make the behavior RESET-like, forcing all state to known
values, albeit - taking into account legacy behavior - not to precisely
the values RESET would enforce (which masks only SSE exceptions, but
not x87 ones); that would come closest to mimicing FINIT behavior in
the xsave case. Another option would be to continue copying whatever
was provided, but override (at least) FCW and MXCSR if VGCF_I387_VALID
isn't set.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
Virtualize VPID for the nested vmm, use host's VPID
to emualte guest's VPID. For each virtual vmentry, if
guest'v vpid is changed, allocate a new host VPID for
L2 guest.
Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com>
Acked-by: Tim Deegan <tim@xen.org>
Acked-by: Jun Nakajima <jun.nakajima@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
Emulate permission check for the nested p2m. Current solution is to
use minimal permission, and once meet permission violation in L0, then
determin whether it is caused by guest EPT or host EPT
Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com>
Acked-by: Tim Deegan <tim@xen.org>
Acked-by: Jun Nakajima <jun.nakajima@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
Implment guest EPT PT walker, some logic is based on shadow's
ia32e PT walker. During the PT walking, if the target pages are
not in memory, use RETRY mechanism and get a chance to let the
target page back.
Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com>
Acked-by: Tim Deegan <tim@xen.org>
Acked-by: Jun Nakajima <jun.nakajima@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
While emulate CR0 and CR4 for nested virtualization, set the CR0/CR4
guest host mask to 0xffffffff in shadow VMCS, then calculate the
corresponding read shadow separately for CR0 and CR4. While getting
the VM exit for CR0/CR4 access, check if L1 VMM owns the bit. If so,
inject the VM exit to L1 VMM. Otherwise, L0 will handle it and sync
the value to L1 virtual VMCS.
Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
In Linux select() typically supports up to 1024 file descriptors. This can be
a problem when user tries to boot up many guests. Switching to poll() has
minimum impact on existing code and has better scalibility.
pollfd array is dynamically allocated / reallocated. If the array fails to
expand, we just ignore the incoming fd.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Changeset 23861:ec7c81fbe0de alters the SBDF encoding expected by the
DOMCTL_{de,}assign_device hypercalls.
While it updates libxl, libxc and the python bindings, the ocaml
bindings got missed. As a result, any attempt to use PCI Passthrough
with Xen-4.2 and later will fail.
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
do_stop() is invoked by "restart" action. We can get multiple QEMUs started up
for Dom0 if we don't kill previous ones.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
in current xen x86_64, the default libexec directory is /usr/lib/xen/bin,
while the private binder is /usr/lib64/xen/bin. but some commands(pygrub,
libxl-save-helper) located in private binder directory is called from
libexec directory which lead to the following error:
1, for pygrub bootloader:
libxl: debug: libxl_bootloader.c:429:bootloader_disk_attached_cb: /usr/lib/xen/bin/pygrub doesn't exist, falling back to config path
2, for libxl-save-helper:
libxl: cannot execute /usr/lib/xen/bin/libxl-save-helper: No such file or directory
libxl: error: libxl_utils.c:363:libxl_read_exactly: file/stream truncated reading ipc msg header from domain 3 save/restore helper stdout pipe
libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus: domain 3 save/restore helper [10222] exited with error status 255
there are two ways to fix above error. the first one is make such command
store in the /usr/lib/xen/bin and /usr/lib64/xen/bin(symbol link to
previous), e.g. qemu-dm. The second way is using private binder dir
instead of libexec dir. e.g. xenconsole.
For these cases, the latter one is suitable.
Signed-off-by: Bamvor Jian Zhang <bjzhang@suse.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
In particular we need to check that adding 512KB of slack and
rounding up to a 4MB boundary do not overflow the guest's memory
allocation. Otherwise we run off the end of the p2m when building the
guest's initial page tables and populate them with garbage.
Wei noticed this when build tiny (2MB) mini-os domains.
Reported-by: Wei Liu <Wei.Liu2@citrix.com>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
Other devices set a sensible devid if the caller has not done so.
Do the same for vfb and vkb. While at it, factor out the common code
used to determine a sensible devid, so it can be used by other
libxl__device_*_add functions.
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
This adds comments to the FLASK access_vectors file describing what
operations each access vector controls and the meanings of the source
and target fields in the permission check. This also makes the
indentation of the file consistent; no functionality changes are made.
Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Committed-by: Keir Fraser <keir@xen.org>
Add getscheduler and setscheduler permissions to replace the
monolithic scheduler permission in the scheduler_op domctl and sysctl.
Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Committed-by: Keir Fraser <keir@xen.org>
This adds a pair of XSM hooks for tmem operations: xsm_tmem_op which
controls any use of tmem, and xsm_tmem_control which allows use of the
TMEM_CONTROL operations. By default, all domains can use tmem while
only IS_PRIV domains can use control operations.
Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Acked-by: Dan Magenheimer <dan.magenheimer@oracle.com>
Committed-by: Keir Fraser <keir@xen.org>
Include the default XSM hook action as the first argument of the hook
to facilitate quick understanding of how the call site is expected to
be used (dom0-only, arbitrary guest, or device model). This argument
does not solely define how a given hook is interpreted, since any
changes to the hook's default action need to be made identically to
all callers of a hook (if there are multiple callers; most hooks only
have one), and may also require changing the arguments of the hook.
Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Keir Fraser <keir@xen.org>
A number of the platform_hypercall XSM hooks have no parameters or
only pass the operation ID, making them redundant with the
xsm_platform_op hook. Remove these redundant hooks.
Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Committed-by: Keir Fraser <keir@xen.org>
Daniel De Graaf
Ian Jackson
Tim Deegan
Ian Campbell
Julien Grall
Miroslav Rezanina
Wei Liu
Jan Beulich
Razvan Cojocaru
Robert Phillips
Zhang Xiantao
Keir Fraser
Ian Campbell
Dongxiao Xu
Andrew Cooper
Bamvor Jian Zhang
Jim Fehlig