linux.git/tools/testing/selftests/kvm/Makefile, branch v6.5 Linux kernel source tree Merge tag 'kvm-x86-selftests-6.5' of https://github.com/kvm-x86/linux into HEAD 2023-07-01T11:19:09+00:00 Paolo Bonzini pbonzini@redhat.com 2023-07-01T11:19:09+00:00 bb05b0ef627f1d43122cdd2f172f5fb789f77a99 KVM selftests changes for 6.5: - Add a test for splitting and reconstituting hugepages during and after dirty logging - Add support for CPU pinning in demand paging test - Generate dependency files so that partial rebuilds work as expected - Misc cleanups and fixes 
KVM selftests changes for 6.5:

 - Add a test for splitting and reconstituting hugepages during and after
   dirty logging

 - Add support for CPU pinning in demand paging test

 - Generate dependency files so that partial rebuilds work as expected

 - Misc cleanups and fixes
Merge tag 'kvm-s390-next-6.5-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD 2023-07-01T11:00:11+00:00 Paolo Bonzini pbonzini@redhat.com 2023-07-01T11:00:11+00:00 a443e2609c01479c7c0c3367059d7b9f2e8a6697 * New uvdevice secret API * New CMM selftest * cmm fix * diag 9c racy access of target cpu fix 
* New uvdevice secret API
* New CMM selftest
* cmm fix
* diag 9c racy access of target cpu fix
KVM: s390: selftests: add selftest for CMMA migration 2023-06-16T09:05:31+00:00 Nico Boehr nrb@linux.ibm.com 2023-03-24T14:54:24+00:00 e325ba2271849e25017743496bcec8d3a83cacb3 Add a selftest for CMMA migration on s390. The tests cover: - interaction of dirty tracking and migration mode, see my recent patch "KVM: s390: disable migration mode when dirty tracking is disabled" [1], - several invalid calls of KVM_S390_GET_CMMA_BITS, for example: invalid flags, CMMA support off, with/without peeking - ensure KVM_S390_GET_CMMA_BITS initally reports all pages as dirty, - ensure KVM_S390_GET_CMMA_BITS properly skips over holes in memslots, but also non-dirty pages Note that without the patch at [1] and the small fix in this series, the selftests will fail. [1] https://lore.kernel.org/all/20230127140532.230651-2-nrb@linux.ibm.com/ Signed-off-by: Nico Boehr <nrb@linux.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Message-Id: <20230324145424.293889-3-nrb@linux.ibm.com> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com> [frankja@linux.ibm.com: squashed 20230606150510.671301-1-nrb@linux.ibm.com / "KVM: s390: selftests: CMMA: don't run if CMMA not supported"] Signed-off-by: Janosch Frank <frankja@linux.ibm.com> 
Add a selftest for CMMA migration on s390.

The tests cover:
- interaction of dirty tracking and migration mode, see my recent patch
  "KVM: s390: disable migration mode when dirty tracking is disabled" [1],
- several invalid calls of KVM_S390_GET_CMMA_BITS, for example: invalid
  flags, CMMA support off, with/without peeking
- ensure KVM_S390_GET_CMMA_BITS initally reports all pages as dirty,
- ensure KVM_S390_GET_CMMA_BITS properly skips over holes in memslots, but
  also non-dirty pages

Note that without the patch at [1] and the small fix in this series, the
selftests will fail.

[1] https://lore.kernel.org/all/20230127140532.230651-2-nrb@linux.ibm.com/

Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-Id: <20230324145424.293889-3-nrb@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
[frankja@linux.ibm.com: squashed
20230606150510.671301-1-nrb@linux.ibm.com / "KVM: s390: selftests:
CMMA: don't run if CMMA not supported"]
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
KVM: selftests: Add new CFLAGS to generate dependency files 2023-06-13T21:26:22+00:00 Yu Zhang yu.c.zhang@linux.intel.com 2023-06-01T08:03:38+00:00 5ed19528db8ddcf0113d721f67a381be3e30c65a Add "-MD" in CFLAGS to generate dependency files. Currently, each time a header file is updated in KVM selftest, we will have to run "make clean && make" to rebuild the whole test suite. By adding new compiling flags and dependent rules in Makefile, we do not need to make clean && make each time a header file is updated. Signed-off-by: Yu Zhang <yu.c.zhang@linux.intel.com> Link: https://lore.kernel.org/r/20230601080338.212942-1-yu.c.zhang@linux.intel.com Signed-off-by: Sean Christopherson <seanjc@google.com> 
Add "-MD" in CFLAGS to generate dependency files. Currently, each
time a header file is updated in KVM selftest, we will have to run
"make clean && make" to rebuild the whole test suite. By adding new
compiling flags and dependent rules in Makefile, we do not need to
make clean && make each time a header file is updated.

Signed-off-by: Yu Zhang <yu.c.zhang@linux.intel.com>
Link: https://lore.kernel.org/r/20230601080338.212942-1-yu.c.zhang@linux.intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
KVM: selftests: Add test for race in kvm_recalculate_apic_map() 2023-06-03T00:21:06+00:00 Michal Luczaj mhal@rbox.co 2023-06-02T23:32:50+00:00 47d2804bc99ca873470df17c20737b28225a320d Keep switching between LAPIC_MODE_X2APIC and LAPIC_MODE_DISABLED during APIC map construction to hunt for TOCTOU bugs in KVM. KVM's optimized map recalc makes multiple passes over the list of vCPUs, and the calculations ignore vCPU's whose APIC is hardware-disabled, i.e. there's a window where toggling LAPIC_MODE_DISABLED is quite interesting. Signed-off-by: Michal Luczaj <mhal@rbox.co> Co-developed-by: Sean Christopherson <seanjc@google.com> Link: https://lore.kernel.org/r/20230602233250.1014316-4-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> 
Keep switching between LAPIC_MODE_X2APIC and LAPIC_MODE_DISABLED during
APIC map construction to hunt for TOCTOU bugs in KVM.  KVM's optimized map
recalc makes multiple passes over the list of vCPUs, and the calculations
ignore vCPU's whose APIC is hardware-disabled, i.e. there's a window where
toggling LAPIC_MODE_DISABLED is quite interesting.

Signed-off-by: Michal Luczaj <mhal@rbox.co>
Co-developed-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20230602233250.1014316-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
KVM: selftests: Add dirty logging page splitting test 2023-06-01T21:03:19+00:00 Ben Gardon bgardon@google.com 2023-01-31T18:18:20+00:00 dfa78a20cc879205b2c6239300dac09907ad3da1 Add a test for page splitting during dirty logging and for hugepage recovery after dirty logging. Page splitting represents non-trivial behavior, which is complicated by MANUAL_PROTECT mode, which causes pages to be split on the first clear, instead of when dirty logging is enabled. Add a test which makes assertions about page counts to help define the expected behavior of page splitting and to provide needed coverage of the behavior. This also helps ensure that a failure in eager page splitting is not covered up by splitting in the vCPU path. Tested by running the test on an Intel Haswell machine w/wo MANUAL_PROTECT. Reviewed-by: Vipin Sharma <vipinsh@google.com> Signed-off-by: Ben Gardon <bgardon@google.com> Link: https://lore.kernel.org/r/20230131181820.179033-3-bgardon@google.com [sean: let the user run without hugetlb, as suggested by Paolo] Signed-off-by: Sean Christopherson <seanjc@google.com> 
Add a test for page splitting during dirty logging and for hugepage
recovery after dirty logging.

Page splitting represents non-trivial behavior, which is complicated
by MANUAL_PROTECT mode, which causes pages to be split on the first
clear, instead of when dirty logging is enabled.

Add a test which makes assertions about page counts to help define the
expected behavior of page splitting and to provide needed coverage of the
behavior. This also helps ensure that a failure in eager page splitting
is not covered up by splitting in the vCPU path.

Tested by running the test on an Intel Haswell machine w/wo
MANUAL_PROTECT.

Reviewed-by: Vipin Sharma <vipinsh@google.com>
Signed-off-by: Ben Gardon <bgardon@google.com>
Link: https://lore.kernel.org/r/20230131181820.179033-3-bgardon@google.com
[sean: let the user run without hugetlb, as suggested by Paolo]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Merge tag 'kvm-x86-selftests-6.4' of https://github.com/kvm-x86/linux into HEAD 2023-04-26T19:56:01+00:00 Paolo Bonzini pbonzini@redhat.com 2023-04-26T19:54:40+00:00 c21775ae021f8d28bb1b8ab857b7342e0f8b180d KVM selftests, and an AMX/XCR0 bugfix, for 6.4: - Don't advertise XTILE_CFG in KVM_GET_SUPPORTED_CPUID if XTILE_DATA is not being reported due to userspace not opting in via prctl() - Overhaul the AMX selftests to improve coverage and cleanup the test - Misc cleanups 
KVM selftests, and an AMX/XCR0 bugfix, for 6.4:

 - Don't advertise XTILE_CFG in KVM_GET_SUPPORTED_CPUID if XTILE_DATA is
   not being reported due to userspace not opting in via prctl()

 - Overhaul the AMX selftests to improve coverage and cleanup the test

 - Misc cleanups
KVM: selftests: Add test to verify KVM's supported XCR0 2023-04-11T17:19:04+00:00 Aaron Lewis aaronlewis@google.com 2023-04-05T00:45:20+00:00 03a405b7a522700a654b79903312d0a305bdce0d Check both architectural rules and KVM's ABI for KVM_GET_SUPPORTED_CPUID to ensure the supported xfeatures[1] don't violate any of them. The architectural rules[2] and KVM's contract with userspace ensure for a given feature, e.g. sse, avx, amx, etc... their associated xfeatures are either all sets or none of them are set, and any dependencies are enabled if needed. [1] EDX:EAX of CPUID.(EAX=0DH,ECX=0) [2] SDM vol 1, 13.3 ENABLING THE XSAVE FEATURE SET AND XSAVE-ENABLED FEATURES Cc: Mingwei Zhang <mizhang@google.com> Signed-off-by: Aaron Lewis <aaronlewis@google.com> [sean: expand comments, use a fancy X86_PROPERTY] Reviewed-by: Aaron Lewis <aaronlewis@google.com> Tested-by: Aaron Lewis <aaronlewis@google.com> Link: https://lore.kernel.org/r/20230405004520.421768-7-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> 
Check both architectural rules and KVM's ABI for KVM_GET_SUPPORTED_CPUID
to ensure the supported xfeatures[1] don't violate any of them.

The architectural rules[2] and KVM's contract with userspace ensure for a
given feature, e.g. sse, avx, amx, etc... their associated xfeatures are
either all sets or none of them are set, and any dependencies are enabled
if needed.

[1] EDX:EAX of CPUID.(EAX=0DH,ECX=0)
[2] SDM vol 1, 13.3 ENABLING THE XSAVE FEATURE SET AND XSAVE-ENABLED
    FEATURES

Cc: Mingwei Zhang <mizhang@google.com>
Signed-off-by: Aaron Lewis <aaronlewis@google.com>
[sean: expand comments, use a fancy X86_PROPERTY]
Reviewed-by: Aaron Lewis <aaronlewis@google.com>
Tested-by: Aaron Lewis <aaronlewis@google.com>
Link: https://lore.kernel.org/r/20230405004520.421768-7-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
KVM: selftests: Add test for SMCCC filter 2023-04-05T11:07:42+00:00 Oliver Upton oliver.upton@linux.dev 2023-04-04T15:40:50+00:00 60e7dade498eb881bcdf0d9a420c97625f73acc1 Add a selftest for the SMCCC filter, ensuring basic UAPI constraints (e.g. reserved ranges, non-overlapping ranges) are upheld. Additionally, test that the DENIED and FWD_TO_USER work as intended. Signed-off-by: Oliver Upton <oliver.upton@linux.dev> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20230404154050.2270077-14-oliver.upton@linux.dev 
Add a selftest for the SMCCC filter, ensuring basic UAPI constraints
(e.g. reserved ranges, non-overlapping ranges) are upheld. Additionally,
test that the DENIED and FWD_TO_USER work as intended.

Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230404154050.2270077-14-oliver.upton@linux.dev
Merge tag 'kvm-s390-next-6.3-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD 2023-02-15T17:35:26+00:00 Paolo Bonzini pbonzini@redhat.com 2023-02-15T17:35:26+00:00 e4922088f8e90ea163281ba8e69b98f34a7a1b83 * Two more V!=R patches * The last part of the cmpxchg patches * A few fixes 
* Two more V!=R patches
* The last part of the cmpxchg patches
* A few fixes