The test system problems which prompted 24233:a9c67c2daf4b (itself a
tiny partial revert of 24184:4ecd3615e726 / 24186:7aa5838499d1) have
now been resolved, we think. So revert 24233.
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Add a command line switch to remus script that allows the user to
enable or disable checkpoint compression in the libxc code.
Signed-off-by: Shriram Rajagopalan <rshriram@cs.ubc.ca>
Acked-by: Brendan Cully <brendan@cs.ubc.ca>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Instead of sending dirty pages of guest memory as-is, use a simple compression
algorithm that sends a RLE-encoded XOR of the page against its last sent copy.
A small LRU cache is used to hold recently dirtied pages. Pagetable pages are
sent as-is, as they are canonicalized at sender side and uncanonicalized at
receiver.
[ Fixed up a conflict in sg_save_restore.h. I had to increase the
ID values used from -11 and -12 to -12 and -13 because -11 had
been taken by ..._HVM_VIRIDIAN in the meantime. -iwj ]
Signed-off-by: Shriram Rajagopalan <rshriram@cs.ubc.ca>
Acked-by: Brendan Cully <brendan@cs.ubc.ca>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Move (page aligned) buffer allocations in {os}_privcmd_alloc_hypercall_buffer
into a global function xc_memalign. This API is also used by Remus
compression code to allocate compression caches that need to be page aligned.
Signed-off-by: Shriram Rajagopalan <rshriram@cs.ubc.ca>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Brendan Cully <brendan@cs.ubc.ca>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
From what I can tell, this was supposed to be an assignment (not warned
about by the compiler due to -Wno-unused, which is about to be removed).
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
The p2m audit code doesn't even compile, let alone work. It also
partially supports ept. Make it:
- compile
- lay groundwork for eventual ept support
- move out of the way of all calls and turn it into a domctl. It's
obviously not being used by anybody presently.
- enable it via said domctl
Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Signed-off-by: Tim Deegan <tim@xen.org>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
This conversion is a trivial invocation of virt_to_mfn in 64 bits.
In 32 bits it uses the linear_map.
Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Acked-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
hap_log_dirty_init unconditionally sets the top of the log dirty
bitmap to INVALID_MFN. If there had been a bitmap allocated, it is
then leaked, and the host crashes on an ASSERT when the domain is
cleaned up.
Signed-off-by: Tim Deegan <tim@xen.org>
Acked-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Committed-by: Tim Deegan <tim@xen.org>
When updating a p2m entry, the hypervisor scans all shadow pte's to find
mappings of that gfn and tear them down. This is avoided if the page count
reveals that there are no additional mappings. The current test ignores the
PGC_allocated flag and its effect on the page count.
Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Signed-off-by: Adin Scannell <adin@scannell.ca>
Signed-off-by: Tim Deegan <tim@xen.org>
Committed-by: Tim Deegan <tim@xen.org>
This is due to a stale check for guest_handle_null in the hypervisor,
which doesn't necessarily work with the hypercall buffers.
Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Tim Deegan <tim@xen.org>
This patch handle PCID/INVPCID for hvm:
For hap hvm, we enable PCID/INVPCID, since no need to intercept
INVPCID, and we just set INVPCID non-root behavior as running natively;
For shadow hvm, we disable PCID/INVPCID, otherwise we need to emulate
INVPCID at vmm by setting INVPCID non-root behavior as vmexit.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
PCID (Process-context identifier) is a facility by which a logical
processor may cache information for multiple linear-address spaces.
INVPCID is an new instruction to invalidate TLB. Refer latest Intel SDM
http://www.intel.com/content/www/us/en/processors/architectures-software-developer-manuals.html
We disable PCID/INVPCID for dom0 and pv. Exposing them into dom0 and pv
may result in performance regression, and it would trigger GP or UD
depending on whether platform suppport INVPCID or not.
This patch disables PCID/INVPCID for dom0.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
This patch expose Intel new features to dom0, including
FMA/AVX2/BMI1/BMI2/LZCNT/MOVBE.
Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
Utilize some of the additions in the prior patches to clean up other
code:
- keep track of REP prefixes in only one variable
- use REX_W in a few more places (instead of a literal number)
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
Clone the existing movq emulation to also support the most fundamental
SIMD FP moves.
Extend the testing code to also exercise these instructions.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
Extend the existing movq emulation to also support its SSE2 and AVX
variants, the latter implying the addition of VEX decoding. Fold the
read and write cases (as most of the logic is identical), and add
movntq and variants (as they're very similar).
Extend the testing code to also exercise these instructions.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
This patch clobbers page owner in free_heap_pages() before we are
finished using it. This means that a subsequent test to determine
whether it is safe to avoid safety TLB flushes incorrectly always
determines that it is safe to do so.
The fix is simple: we can defer the original patch's work until after
we are done with the page-owner field.
Thanks to Christian Limpach for spotting this one.
Signed-off-by: Keir Fraser <keir@xen.org>
An upcoming change may increase the size of mem_event_domain. The result
is a build failure because struct domain gets larger than a page.
Allocate the room for the three mem_event_domain members at runtime.
v2:
- remove mem_ prefix from members of new struct
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Committed-by: Keir Fraser <keir@xen.org>
Add some more tracing to vmexits that don't currently have
trace information:
* VMX realmode emulation
* Various VMX traps
* Fast-pathed APIC accesses
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Committed-by: Keir Fraser <keir@xen.org>
and populate it at boot time with a value read from
"platform/generation_id". Also add code to libxl to populate this
xenstore key with the value of a new 'generation_id' parameter in the
VM config file. Populate the ADDR package of VM_Gen_Counter ACPI
device such that the first integer evaluates to the low order 32 bits
of the buffer address and the second integer evaluates to the high
order 32 bits of the buffer address.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Committed-by: Keir Fraser <keir@xen.org>
evaluating to two integers, and with _CID and _DDN set to
"VM_Gen_Counter".
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Committed-by: Keir Fraser <keir@xen.org>
Stefano Stabellini
Ian Jackson
Ian Campbell
Shriram Rajagopalan
Jan Beulich
Tim Deegan
Andres Lagar-Cavilla
Liu, Jinsong
Keir Fraser
Paul Durrant
Olaf Hering
George Dunlap