flight 175421 xen-unstable real [real]
http://logs.test-lab.xenproject.org/osstest/logs/175421/
Regressions :-(
Tests which did not succeed and are blocking,
including tests which could not be run:
test-amd64-i386-migrupgrade <job status> broken
test-amd64-i386-xl-pvshim <job status> broken
test-amd64-i386-xl-qemuu-dmrestrict-amd64-dmrestrict <job status> broken
test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict <job status> broken
test-amd64-i386-xl-pvshim 5 host-install(5) broken REGR. vs. 175399
test-amd64-i386-migrupgrade 6 host-install/src_host(6) broken REGR. vs. 175399
test-amd64-i386-xl-qemuu-dmrestrict-amd64-dmrestrict 5 host-install(5) broken
REGR. vs. 175399
test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict 5 host-install(5) broken
REGR. vs. 175399
test-amd64-amd64-examine-uefi 5 host-install broken REGR. vs. 175399
test-amd64-i386-libvirt 7 xen-install fail REGR. vs. 175399
test-amd64-amd64-xl-qcow2 21 guest-start/debian.repeat fail REGR. vs. 175399
Regressions which are regarded as allowable (not blocking):
test-amd64-amd64-examine-uefi 4 memdisk-try-append fail REGR. vs. 175399
Tests which did not succeed, but are not blocking:
test-amd64-amd64-xl-qemut-win7-amd64 19 guest-stop fail like 175399
test-amd64-i386-xl-qemuu-win7-amd64 19 guest-stop fail like 175399
test-amd64-amd64-xl-qemuu-ws16-amd64 19 guest-stop fail like 175399
test-amd64-amd64-qemuu-nested-amd 20 debian-hvm-install/l1/l2 fail like 175399
test-amd64-i386-xl-qemut-ws16-amd64 19 guest-stop fail like 175399
test-amd64-i386-xl-qemut-win7-amd64 19 guest-stop fail like 175399
test-armhf-armhf-libvirt 16 saverestore-support-check fail like 175399
test-armhf-armhf-libvirt-qcow2 15 saverestore-support-check fail like 175399
test-amd64-amd64-xl-qemut-ws16-amd64 19 guest-stop fail like 175399
test-armhf-armhf-libvirt-raw 15 saverestore-support-check fail like 175399
test-amd64-i386-xl-qemuu-ws16-amd64 19 guest-stop fail like 175399
test-amd64-amd64-xl-qemuu-win7-amd64 19 guest-stop fail like 175399
test-amd64-i386-libvirt-xsm 15 migrate-support-check fail never pass
test-amd64-amd64-libvirt-xsm 15 migrate-support-check fail never pass
test-arm64-arm64-xl-xsm 15 migrate-support-check fail never pass
test-arm64-arm64-xl-xsm 16 saverestore-support-check fail never pass
test-arm64-arm64-xl 15 migrate-support-check fail never pass
test-arm64-arm64-xl 16 saverestore-support-check fail never pass
test-arm64-arm64-xl-credit2 15 migrate-support-check fail never pass
test-arm64-arm64-xl-credit2 16 saverestore-support-check fail never pass
test-arm64-arm64-xl-thunderx 15 migrate-support-check fail never pass
test-arm64-arm64-xl-thunderx 16 saverestore-support-check fail never pass
test-arm64-arm64-xl-credit1 15 migrate-support-check fail never pass
test-arm64-arm64-xl-credit1 16 saverestore-support-check fail never pass
test-amd64-amd64-libvirt 15 migrate-support-check fail never pass
test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm 13 migrate-support-check
fail never pass
test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm 13 migrate-support-check
fail never pass
test-arm64-arm64-libvirt-xsm 15 migrate-support-check fail never pass
test-arm64-arm64-libvirt-xsm 16 saverestore-support-check fail never pass
test-arm64-arm64-libvirt-raw 14 migrate-support-check fail never pass
test-arm64-arm64-libvirt-raw 15 saverestore-support-check fail never pass
test-amd64-amd64-libvirt-vhd 14 migrate-support-check fail never pass
test-armhf-armhf-xl-arndale 15 migrate-support-check fail never pass
test-armhf-armhf-xl-arndale 16 saverestore-support-check fail never pass
test-armhf-armhf-xl-credit1 15 migrate-support-check fail never pass
test-armhf-armhf-xl-credit1 16 saverestore-support-check fail never pass
test-arm64-arm64-xl-vhd 14 migrate-support-check fail never pass
test-arm64-arm64-xl-vhd 15 saverestore-support-check fail never pass
test-armhf-armhf-xl-credit2 15 migrate-support-check fail never pass
test-armhf-armhf-xl-credit2 16 saverestore-support-check fail never pass
test-armhf-armhf-xl-rtds 15 migrate-support-check fail never pass
test-armhf-armhf-xl-rtds 16 saverestore-support-check fail never pass
test-arm64-arm64-xl-seattle 15 migrate-support-check fail never pass
test-arm64-arm64-xl-seattle 16 saverestore-support-check fail never pass
test-armhf-armhf-xl-cubietruck 15 migrate-support-check fail never pass
test-armhf-armhf-xl-cubietruck 16 saverestore-support-check fail never pass
test-armhf-armhf-libvirt 15 migrate-support-check fail never pass
test-armhf-armhf-xl 15 migrate-support-check fail never pass
test-armhf-armhf-xl 16 saverestore-support-check fail never pass
test-amd64-i386-libvirt-raw 14 migrate-support-check fail never pass
test-armhf-armhf-xl-vhd 14 migrate-support-check fail never pass
test-armhf-armhf-xl-vhd 15 saverestore-support-check fail never pass
test-armhf-armhf-xl-multivcpu 15 migrate-support-check fail never pass
test-armhf-armhf-xl-multivcpu 16 saverestore-support-check fail never pass
test-armhf-armhf-libvirt-qcow2 14 migrate-support-check fail never pass
test-armhf-armhf-libvirt-raw 14 migrate-support-check fail never pass
version targeted for testing:
xen f1b9a28922d2913dda76fd82b0b79f3651d3fc8d
baseline version:
xen 12b593ca0d61ef884c2f2de15ed36b4900fc92b2
Last test of basis 175399 2022-12-19 01:53:26 Z 1 days
Failing since 175408 2022-12-19 15:38:33 Z 1 days 2 attempts
Testing same since 175421 2022-12-20 06:43:19 Z 0 days 1 attempts
------------------------------------------------------------
People who touched revisions under test:
Andrew Cooper <andrew.coop...@citrix.com>
Christian Lindig <christian.lin...@citrix.com>
Edwin Török <edvin.to...@citrix.com>
Edwin Török <edwin.to...@cloud.com>
George Dunlap <george.dun...@cloud.com>
Jan Beulich <jbeul...@suse.com>
Julien Grall <jgr...@amazon.com>
Michal Orzel <michal.or...@amd.com>
Neowutran <x...@neowutran.ovh>
Roger Pau Monné <roger....@citrix.com>
jobs:
build-amd64-xsm pass
build-arm64-xsm pass
build-i386-xsm pass
build-amd64-xtf pass
build-amd64 pass
build-arm64 pass
build-armhf pass
build-i386 pass
build-amd64-libvirt pass
build-arm64-libvirt pass
build-armhf-libvirt pass
build-i386-libvirt pass
build-amd64-prev pass
build-i386-prev pass
build-amd64-pvops pass
build-arm64-pvops pass
build-armhf-pvops pass
build-i386-pvops pass
test-xtf-amd64-amd64-1 pass
test-xtf-amd64-amd64-2 pass
test-xtf-amd64-amd64-3 pass
test-xtf-amd64-amd64-4 pass
test-xtf-amd64-amd64-5 pass
test-amd64-amd64-xl pass
test-amd64-coresched-amd64-xl pass
test-arm64-arm64-xl pass
test-armhf-armhf-xl pass
test-amd64-i386-xl pass
test-amd64-coresched-i386-xl pass
test-amd64-amd64-libvirt-qemuu-debianhvm-amd64-xsm pass
test-amd64-i386-libvirt-qemuu-debianhvm-amd64-xsm pass
test-amd64-amd64-xl-qemut-stubdom-debianhvm-amd64-xsm pass
test-amd64-i386-xl-qemut-stubdom-debianhvm-amd64-xsm pass
test-amd64-amd64-xl-qemut-debianhvm-i386-xsm pass
test-amd64-i386-xl-qemut-debianhvm-i386-xsm pass
test-amd64-amd64-xl-qemuu-debianhvm-i386-xsm pass
test-amd64-i386-xl-qemuu-debianhvm-i386-xsm pass
test-amd64-amd64-libvirt-xsm pass
test-arm64-arm64-libvirt-xsm pass
test-amd64-i386-libvirt-xsm pass
test-amd64-amd64-xl-xsm pass
test-arm64-arm64-xl-xsm pass
test-amd64-i386-xl-xsm pass
test-amd64-amd64-qemuu-nested-amd fail
test-amd64-amd64-xl-pvhv2-amd pass
test-amd64-i386-qemut-rhel6hvm-amd pass
test-amd64-i386-qemuu-rhel6hvm-amd pass
test-amd64-amd64-dom0pvh-xl-amd pass
test-amd64-amd64-xl-qemut-debianhvm-amd64 pass
test-amd64-i386-xl-qemut-debianhvm-amd64 pass
test-amd64-amd64-xl-qemuu-debianhvm-amd64 pass
test-amd64-i386-xl-qemuu-debianhvm-amd64 pass
test-amd64-i386-freebsd10-amd64 pass
test-amd64-amd64-qemuu-freebsd11-amd64 pass
test-amd64-amd64-qemuu-freebsd12-amd64 pass
test-amd64-amd64-xl-qemuu-ovmf-amd64 pass
test-amd64-i386-xl-qemuu-ovmf-amd64 pass
test-amd64-amd64-xl-qemut-win7-amd64 fail
test-amd64-i386-xl-qemut-win7-amd64 fail
test-amd64-amd64-xl-qemuu-win7-amd64 fail
test-amd64-i386-xl-qemuu-win7-amd64 fail
test-amd64-amd64-xl-qemut-ws16-amd64 fail
test-amd64-i386-xl-qemut-ws16-amd64 fail
test-amd64-amd64-xl-qemuu-ws16-amd64 fail
test-amd64-i386-xl-qemuu-ws16-amd64 fail
test-armhf-armhf-xl-arndale pass
test-amd64-amd64-examine-bios pass
test-amd64-i386-examine-bios pass
test-amd64-amd64-xl-credit1 pass
test-arm64-arm64-xl-credit1 pass
test-armhf-armhf-xl-credit1 pass
test-amd64-amd64-xl-credit2 pass
test-arm64-arm64-xl-credit2 pass
test-armhf-armhf-xl-credit2 pass
test-armhf-armhf-xl-cubietruck pass
test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict broken
test-amd64-i386-xl-qemuu-dmrestrict-amd64-dmrestrict broken
test-amd64-amd64-examine pass
test-arm64-arm64-examine pass
test-armhf-armhf-examine pass
test-amd64-i386-examine pass
test-amd64-i386-freebsd10-i386 pass
test-amd64-amd64-qemuu-nested-intel pass
test-amd64-amd64-xl-pvhv2-intel pass
test-amd64-i386-qemut-rhel6hvm-intel pass
test-amd64-i386-qemuu-rhel6hvm-intel pass
test-amd64-amd64-dom0pvh-xl-intel pass
test-amd64-amd64-libvirt pass
test-armhf-armhf-libvirt pass
test-amd64-i386-libvirt fail
test-amd64-amd64-livepatch pass
test-amd64-i386-livepatch pass
test-amd64-amd64-migrupgrade pass
test-amd64-i386-migrupgrade broken
test-amd64-amd64-xl-multivcpu pass
test-armhf-armhf-xl-multivcpu pass
test-amd64-amd64-pair pass
test-amd64-i386-pair pass
test-amd64-amd64-libvirt-pair pass
test-amd64-i386-libvirt-pair pass
test-amd64-amd64-xl-pvshim pass
test-amd64-i386-xl-pvshim broken
test-amd64-amd64-pygrub pass
test-armhf-armhf-libvirt-qcow2 pass
test-amd64-amd64-xl-qcow2 fail
test-arm64-arm64-libvirt-raw pass
test-armhf-armhf-libvirt-raw pass
test-amd64-i386-libvirt-raw pass
test-amd64-amd64-xl-rtds pass
test-armhf-armhf-xl-rtds pass
test-arm64-arm64-xl-seattle pass
test-amd64-amd64-xl-qemuu-debianhvm-amd64-shadow pass
test-amd64-i386-xl-qemuu-debianhvm-amd64-shadow pass
test-amd64-amd64-xl-shadow pass
test-amd64-i386-xl-shadow pass
test-arm64-arm64-xl-thunderx pass
test-amd64-amd64-examine-uefi fail
test-amd64-i386-examine-uefi pass
test-amd64-amd64-libvirt-vhd pass
test-arm64-arm64-xl-vhd pass
test-armhf-armhf-xl-vhd pass
test-amd64-i386-xl-vhd pass
------------------------------------------------------------
sg-report-flight on osstest.test-lab.xenproject.org
logs: /home/logs/logs
images: /home/logs/images
Logs, config files, etc. are available at
http://logs.test-lab.xenproject.org/osstest/logs
Explanation of these reports, and of osstest in general, is at
http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README.email;hb=master
http://xenbits.xen.org/gitweb/?p=osstest.git;a=blob;f=README;hb=master
Test harness code can be found at
http://xenbits.xen.org/gitweb?p=osstest.git;a=summary
broken-job test-amd64-i386-migrupgrade broken
broken-job test-amd64-i386-xl-pvshim broken
broken-job test-amd64-i386-xl-qemuu-dmrestrict-amd64-dmrestrict broken
broken-job test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict broken
broken-step test-amd64-i386-xl-pvshim host-install(5)
broken-step test-amd64-i386-migrupgrade host-install/src_host(6)
broken-step test-amd64-i386-xl-qemuu-dmrestrict-amd64-dmrestrict host-install(5)
broken-step test-amd64-amd64-xl-qemuu-dmrestrict-amd64-dmrestrict
host-install(5)
broken-step test-amd64-amd64-examine-uefi host-install
Not pushing.
------------------------------------------------------------
commit f1b9a28922d2913dda76fd82b0b79f3651d3fc8d
Author: Michal Orzel <michal.or...@amd.com>
Date: Fri Dec 16 14:30:12 2022 +0100
automation: Add test jobs to run XTF hypercall xen_version test
Add test jobs in both debug and non-debug versions to run hyp-xen-version
XTF test as a dom0less domU on arm64. The purpose of this test is to
validate the functional behavior of xen_version hypercall.
Signed-off-by: Michal Orzel <michal.or...@amd.com>
Reviewed-by: Stefano Stabellini <sstabell...@kernel.org>
commit 99ba7abbda7d42156f9ed70224750244ed42d120
Author: Michal Orzel <michal.or...@amd.com>
Date: Fri Dec 16 14:30:11 2022 +0100
automation: Add support for using XTF for arm64 testing
Introduce support for using XTF on Arm to perform low-level testing.
For the purpose of the CI testing, let's use the fork [1] from upstream
XTF with implemented support for arm64 (the upstream XTF only supports
x86).
Add a new script under automation/scripts to be used by the CI XTF test
jobs to perform the following tasks:
- Compiling XTF,
- Generating u-boot script using ImageBuilder,
- Running Xen with XTF as domU in pure dom0less configuration using Qemu,
- Checking test result.
The script takes the name of the XTF test to run as a first parameter.
[1] https://gitlab.com/xen-project/fusa/xtf.git (branch xtf-arm)
Signed-off-by: Michal Orzel <michal.or...@amd.com>
Reviewed-by: Stefano Stabellini <sstabell...@kernel.org>
commit 01f139215e678c2dc7d4bb3f9f2777069bb1b091
Author: Edwin Török <edvin.to...@citrix.com>
Date: Fri Dec 16 18:25:20 2022 +0000
tools/ocaml/xb: Drop Xs_ring.write
This function is unusued (only Xs_ring.write_substring is used), and the
bytes/string conversion here is backwards: the C stub implements the bytes
version and then we use a Bytes.unsafe_of_string to convert a string into
bytes.
However the operation here really is read-only: we read from the string and
write it to the ring, so the C stub should implement the read-only string
version, and if needed we could use Bytes.unsafe_to_string to be able to
send
'bytes'. However that is not necessary as the 'bytes' version is dropped
above.
Signed-off-by: Edwin Török <edvin.to...@citrix.com>
Acked-by: Christian Lindig <christian.lin...@citrix.com>
commit 2e173b8383928e8d98d67ce57ec069eb612def60
Author: Edwin Török <edvin.to...@citrix.com>
Date: Fri Dec 16 18:25:16 2022 +0000
tools/ocaml/xenctrl: Fix unused value warning
Fixes: 8b3c06a3e5 ("tools/ocaml/xenctrl: OCaml 5 support, fix
use-after-free")
Signed-off-by: Edwin Török <edwin.to...@cloud.com>
Acked-by: Christian Lindig <christian.lin...@citrix.com>
Acked-by: Andrew Cooper <andrew.coop...@citrix.com>
commit 4a259353238d308a41541370ea7cc222a879ddd3
Author: Edwin Török <edvin.to...@citrix.com>
Date: Fri Dec 16 18:25:11 2022 +0000
tools/ocaml/xenstored: Use ocamldep -sort for linking order
The manually established link order is fragile to code changes. Use
ocamldep
to calculate the appropriate link order.
No functional change.
Signed-off-by: Edwin Török <edvin.to...@citrix.com>
Acked-by: Christian Lindig <christian.lin...@citrix.com>
commit d2ccc637111d6dbcf808aaffeec7a46f0b1e1c81
Author: Edwin Török <edvin.to...@citrix.com>
Date: Fri Dec 16 18:25:10 2022 +0000
tools/ocaml/xb,mmap: Use Data_abstract_val wrapper
This is not strictly necessary since it is essentially a no-op currently: a
cast to void * and value *, even in OCaml 5.0.
However it does make it clearer that what we have here is not a regular
OCaml
value, but one allocated with Abstract_tag or Custom_tag, and follows the
example from the manual more closely:
https://v2.ocaml.org/manual/intfc.html#ss:c-outside-head
It also makes it clearer that these modules have been reviewed for
compat with OCaml 5.0.
We cannot use OCaml finalizers here, because we want exact control over when
to unmap these pages from remote domains.
No functional change.
Signed-off-by: Edwin Török <edvin.to...@citrix.com>
Acked-by: Christian Lindig <christian.lin...@citrix.com>
commit 5f05b229319e25aa7f35735bba060ddbeb325872
Author: Andrew Cooper <andrew.coop...@citrix.com>
Date: Fri Dec 16 10:46:42 2022 +0000
tools/golang: Refresh bindings following virtio changes
Fixes: 43ba5202e2ee ("libxl: add support for generic virtio device")
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
Acked-by: George Dunlap <george.dun...@cloud.com>
commit 68b2672a63280fa180f4e52c5dab54b04b1369ad
Author: Andrew Cooper <andrew.coop...@citrix.com>
Date: Mon Dec 6 19:16:23 2021 +0000
x86/boot: Relocate Xen using memcpy() directly
We can relocate Xen by reading out of the virtual mapping that we're
executing
on, and write directly into the directmap. In fact, this removes one
dependency on Xen being "at 0" (the XEN_IMG_OFFSET passed as src) for
relocation to occur.
This removes all the temporary pagetable handling under the covers of
move_memory(), and results in a forward copy rather than a chunked backwards
copy (caused by move_memory() always constructing src and dst in a way to
trigger memmove() to copy backwards).
With the penultimate caller of move_memory() dropped, clean up the API.
Drop
the keep boolean, folding in 0 from the final caller, and drop the return
address which has been unused since c/s 0b76ce20de85 ("x86/setup: don't
relocate the VGA hole.") in 2007.
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
Reviewed-by: Jan Beulich <jbeul...@suse.com>
commit da5092e7d6ed4714b5dc63ed2cd7f6c93dd6efd4
Author: Jan Beulich <jbeul...@suse.com>
Date: Mon Dec 19 11:35:25 2022 +0100
NUMA: replace phys_to_nid()
All callers convert frame numbers (perhaps in turn derived from struct
page_info pointers) to an address, just for the function to convert it
back to a frame number (as the first step of paddr_to_pdx()). Replace
the function by mfn_to_nid() plus a page_to_nid() wrapper macro. Replace
call sites by the respectively most suitable one.
While there also
- introduce a !NUMA stub, eliminating the need for Arm (and potentially
other ports) to carry one individually,
- drop the (strictly speaking wrong) "pure" attribute from the function,
- extend a condition in dump_numa() to make sure that none of the
assertions would trigger for empty or (unlikely) single-page nodes (at
the same time this also prevents the warning printk() to be issued for
every empty [e.g. CPU-only] node).
Signed-off-by: Jan Beulich <jbeul...@suse.com>
Acked-by: Andrew Cooper <andrew.coop...@citrix.com>
Acked-by: Julien Grall <jgr...@amazon.com>
commit ad15a0a8ca2515d8ac58edfc0bc1d3719219cb77
Author: Neowutran <x...@neowutran.ovh>
Date: Mon Dec 19 11:34:16 2022 +0100
x86/time: prevent overflow with high frequency TSCs
Make sure tsc_khz is promoted to a 64-bit type before multiplying by
1000 to avoid an 'overflow before widen' bug. Otherwise just above
4.294GHz the value will overflow. Processors with clocks this high are
now in production and require this to work correctly.
Signed-off-by: Neowutran <x...@neowutran.ovh>
Reviewed-by: Jan Beulich <jbeul...@suse.com>
commit 573279cde1c4e752d4df34bc65ffafa17573148e
Author: Roger Pau Monné <roger....@citrix.com>
Date: Mon Dec 19 11:24:14 2022 +0100
x86/vmx: implement Notify VM Exit
Under certain conditions guests can get the CPU stuck in an unbounded
loop without the possibility of an interrupt window to occur on
instruction boundary. This was the case with the scenarios described
in XSA-156.
Make use of the Notify VM Exit mechanism, that will trigger a VM Exit
if no interrupt window occurs for a specified amount of time. Note
that using the Notify VM Exit avoids having to trap #AC and #DB
exceptions, as Xen is guaranteed to get a VM Exit even if the guest
puts the CPU in a loop without an interrupt window, as such disable
the intercepts if the feature is available and enabled.
Setting the notify VM exit window to 0 is safe because there's a
threshold added by the hardware in order to have a sane window value.
Note the handling of EXIT_REASON_NOTIFY in the nested virtualization
case is passed to L0, and hence a nested guest being able to trigger a
notify VM exit with an invalid context would be able to crash the L1
hypervisor (by L0 destroying the domain). Since we don't expose VM
Notify support to L1 it should already enable the required
protections in order to prevent VM Notify from triggering in the first
place.
Suggested-by: Andrew Cooper <andrew.coop...@citrix.com>
Signed-off-by: Roger Pau Monné <roger....@citrix.com>
Reviewed-by: Kevin Tian <kevin.t...@intel.com>
commit d329b37d12132164c3894d0b6284be72576ef950
Author: Roger Pau Monné <roger....@citrix.com>
Date: Mon Dec 19 11:23:34 2022 +0100
x86/vmx: introduce helper to set VMX_INTR_SHADOW_NMI
Introduce a small helper to OR VMX_INTR_SHADOW_NMI in
GUEST_INTERRUPTIBILITY_INFO in order to help dealing with the NMI
unblocked by IRET case. Replace the existing usage in handling
EXIT_REASON_EXCEPTION_NMI and also add such handling to EPT violations
and page-modification log-full events.
Reported-by: Andrew Cooper <andrew.coop...@citrix.com>
Signed-off-by: Roger Pau Monné <roger....@citrix.com>
Reviewed-by: Jan Beulich <jbeul...@suse.com>
Reviewed-by: Kevin Tian <kevin.t...@intel.com>
commit f7d07619d2ae0382e2922e287fbfbb27722f3f0b
Author: Roger Pau Monné <roger....@citrix.com>
Date: Mon Dec 19 11:22:43 2022 +0100
x86/vmx: implement VMExit based guest Bus Lock detection
Add support for enabling guest Bus Lock Detection on Intel systems.
Such detection works by triggering a vmexit, which ought to be enough
of a pause to prevent a guest from abusing of the Bus Lock.
Add an extra Xen perf counter to track the number of Bus Locks detected.
This is done because Bus Locks can also be reported by setting the bit
26 in the exit reason field, so also account for those.
Note EXIT_REASON_BUS_LOCK VMExits will always have bit 26 set in
exit_reason, and hence the performance counter doesn't need to be
increased for EXIT_REASON_BUS_LOCK handling.
Suggested-by: Andrew Cooper <andrew.coop...@citrix.com>
Signed-off-by: Roger Pau Monné <roger....@citrix.com>
Reviewed-by: Kevin Tian <kevin.t...@intel.com>
(qemu changes not included)
