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2023-03-24KVM: selftests: Enable checking on xcomp_bv in amx_testMingwei Zhang1-0/+1
After tilerelease instruction, AMX tiles are in INIT state. According to Intel SDM vol 1. 13.10: "If RFBM[i] = 1, XSTATE_BV[i] is set to the value of XINUSE[i].", XSTATE_BV[18] should be cleared after xsavec. On the other hand, according to Intel SDM vol 1. 13.4.3: "If XCOMP_BV[i] = 1, state component i is located at a byte offset locationI from the base address of the XSAVE area". Since at the time of xsavec, XCR0[18] is set indicating AMX tile data component is still enabled, xcomp_bv[18] should be set. Complete the checks by adding the assert to xcomp_bv[18] after xsavec. Signed-off-by: Mingwei Zhang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-03-24KVM: selftests: Fix an error in comment of amx_testMingwei Zhang1-1/+4
After the execution of __tilerelease(), AMX component will be in INIT state. Therefore, execution of XSAVEC saving the AMX state into memory will cause the xstate_bv[18] cleared in xheader. However, the xcomp_bv[18] will remain set. Fix the error in comment. Also, update xsavec() to XSAVEC because xcomp_bv[18] is set due to the instruction, not the function. Finally, use XTILEDATA instead 'bit 18' in comments. Cc: Jim Mattson <[email protected]> Cc: Venkatesh Srinivas <[email protected]> Cc: Aaron Lewis <[email protected]> Signed-off-by: Mingwei Zhang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-03-24KVM: selftests: Add a fully functional "struct xstate" for x86Mingwei Zhang2-25/+23
Add a working xstate data structure for the usage of AMX and potential future usage on other xstate components. AMX selftest requires checking both the xstate_bv and xcomp_bv. Existing code relies on pointer arithmetics to fetch xstate_bv and does not support xcomp_bv. So, add a working xstate data structure into processor.h for x86. Suggested-by: Sean Christopherson <[email protected]> Signed-off-by: Mingwei Zhang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-03-24KVM: selftests: Add 'malloc' failure check in vcpu_save_stateIvan Orlov1-0/+1
There is a 'malloc' call in vcpu_save_state function, which can be unsuccessful. This patch will add the malloc failure checking to avoid possible null dereference and give more information about test fail reasons. Signed-off-by: Ivan Orlov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-03-24KVM: selftests: Adjust VM's initial stack address to align with SysV ABI specAckerley Tng1-1/+17
Align the guest stack to match calling sequence requirements in section "The Stack Frame" of the System V ABI AMD64 Architecture Processor Supplement, which requires the value (%rsp + 8), NOT %rsp, to be a multiple of 16 when control is transferred to the function entry point. I.e. in a normal function call, %rsp needs to be 16-byte aligned _before_ CALL, not after. This fixes unexpected #GPs in guest code when the compiler uses SSE instructions, e.g. to initialize memory, as many SSE instructions require memory operands (including those on the stack) to be 16-byte-aligned. Signed-off-by: Ackerley Tng <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-03-24KVM: selftests: Report enable_pmu module value when test is skippedLike Xu2-0/+2
Running x86_64/pmu_event_filter_test or x86_64/vmx_pmu_caps_test with enable_pmu globally disabled will report the following into: 1..0 # SKIP - Requirement not met: use_intel_pmu() || use_amd_pmu() or 1..0 # SKIP - Requirement not met: kvm_cpu_has(X86_FEATURE_PDCM) this can be confusing, so add a check on kvm.enable_pmu. Signed-off-by: Like Xu <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-03-24KVM: selftests: Add a helper to read kvm boolean module parametersLike Xu2-0/+6
Add a helper function for reading kvm boolean module parameters values. No functional change intended. Signed-off-by: Like Xu <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-03-24KVM: selftests: Fix nsec to sec conversion in demand_paging_testAnish Moorthy1-1/+1
demand_paging_test uses 1E8 as the denominator to convert nanoseconds to seconds, which is wrong. Use NSEC_PER_SEC instead to fix the issue and make the conversion obvious. Reported-by: James Houghton <[email protected]> Signed-off-by: Anish Moorthy <[email protected]> Reviewed-by: Oliver Upton <[email protected]> Reviewed-by: Sean Christopherson <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-03-14KVM: selftests: Sync KVM exit reasons in selftestsVipin Sharma1-2/+15
Add missing KVM_EXIT_* reasons in KVM selftests from include/uapi/linux/kvm.h Signed-off-by: Vipin Sharma <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2023-03-14KVM: selftests: Add macro to generate KVM exit reason stringsSean Christopherson1-26/+28
Add and use a macro to generate the KVM exit reason strings array instead of relying on developers to correctly copy+paste+edit each string. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2023-03-14KVM: selftests: Print expected and actual exit reason in KVM exit reason assertVipin Sharma1-1/+2
Print what KVM exit reason a test was expecting and what it actually got int TEST_ASSERT_KVM_EXIT_REASON(). Signed-off-by: Vipin Sharma <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2023-03-14KVM: selftests: Make vCPU exit reason test assertion commonVipin Sharma44-293/+69
Make TEST_ASSERT_KVM_EXIT_REASON() macro and replace all exit reason test assert statements with it. No functional changes intended. Signed-off-by: Vipin Sharma <[email protected]> Reviewed-by: David Matlack <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2023-03-14KVM: selftests: Add EVTCHNOP_send slow path test to xen_shinfo_testDavid Woodhouse1-0/+27
When kvm_xen_evtchn_send() takes the slow path because the shinfo GPC needs to be revalidated, it used to violate the SRCU vs. kvm->lock locking rules and potentially cause a deadlock. Now that lockdep is learning to catch such things, make sure that code path is exercised by the selftest. Link: https://lore.kernel.org/all/[email protected] Signed-off-by: David Woodhouse <[email protected]> Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2023-03-14KVM: selftests: Use enum for test numbers in xen_shinfo_testDavid Woodhouse1-51/+82
The xen_shinfo_test started off with very few iterations, and the numbers we used in GUEST_SYNC() were precisely mapped to the RUNSTATE_xxx values anyway to start with. It has since grown quite a few more tests, and it's kind of awful to be handling them all as bare numbers. Especially when I want to add a new test in the middle. Define an enum for the test stages, and use it both in the guest code and the host switch statement. No functional change, if I can count to 24. Signed-off-by: David Woodhouse <[email protected]> Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2023-03-14KVM: selftests: Add helpers to make Xen-style VMCALL/VMMCALL hypercallsSean Christopherson3-54/+21
Add wrappers to do hypercalls using VMCALL/VMMCALL and Xen's register ABI (as opposed to full Xen-style hypercalls through a hypervisor provided page). Using the common helpers dedups a pile of code, and uses the native hypercall instruction when running on AMD. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2023-03-14KVM: selftests: Move the guts of kvm_hypercall() to a separate macroSean Christopherson1-12/+17
Extract the guts of kvm_hypercall() to a macro so that Xen hypercalls, which have a different register ABI, can reuse the VMCALL vs. VMMCALL logic. No functional change intended. Signed-off-by: Sean Christopherson <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2023-03-14selftests: KVM: skip hugetlb tests if huge pages are not availablePaolo Bonzini1-9/+16
Right now, if KVM memory stress tests are run with hugetlb sources but hugetlb is not available (either in the kernel or because /proc/sys/vm/nr_hugepages is 0) the test will fail with a memory allocation error. This makes it impossible to add tests that default to hugetlb-backed memory, because on a machine with a default configuration they will fail. Therefore, check HugePages_Total as well and, if zero, direct the user to enable hugepages in procfs. Furthermore, return KSFT_SKIP whenever hugetlb is not available. Signed-off-by: Paolo Bonzini <[email protected]>
2023-02-25Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds23-406/+1453
Pull kvm updates from Paolo Bonzini: "ARM: - Provide a virtual cache topology to the guest to avoid inconsistencies with migration on heterogenous systems. Non secure software has no practical need to traverse the caches by set/way in the first place - Add support for taking stage-2 access faults in parallel. This was an accidental omission in the original parallel faults implementation, but should provide a marginal improvement to machines w/o FEAT_HAFDBS (such as hardware from the fruit company) - A preamble to adding support for nested virtualization to KVM, including vEL2 register state, rudimentary nested exception handling and masking unsupported features for nested guests - Fixes to the PSCI relay that avoid an unexpected host SVE trap when resuming a CPU when running pKVM - VGIC maintenance interrupt support for the AIC - Improvements to the arch timer emulation, primarily aimed at reducing the trap overhead of running nested - Add CONFIG_USERFAULTFD to the KVM selftests config fragment in the interest of CI systems - Avoid VM-wide stop-the-world operations when a vCPU accesses its own redistributor - Serialize when toggling CPACR_EL1.SMEN to avoid unexpected exceptions in the host - Aesthetic and comment/kerneldoc fixes - Drop the vestiges of the old Columbia mailing list and add [Oliver] as co-maintainer RISC-V: - Fix wrong usage of PGDIR_SIZE instead of PUD_SIZE - Correctly place the guest in S-mode after redirecting a trap to the guest - Redirect illegal instruction traps to guest - SBI PMU support for guest s390: - Sort out confusion between virtual and physical addresses, which currently are the same on s390 - A new ioctl that performs cmpxchg on guest memory - A few fixes x86: - Change tdp_mmu to a read-only parameter - Separate TDP and shadow MMU page fault paths - Enable Hyper-V invariant TSC control - Fix a variety of APICv and AVIC bugs, some of them real-world, some of them affecting architecurally legal but unlikely to happen in practice - Mark APIC timer as expired if its in one-shot mode and the count underflows while the vCPU task was being migrated - Advertise support for Intel's new fast REP string features - Fix a double-shootdown issue in the emergency reboot code - Ensure GIF=1 and disable SVM during an emergency reboot, i.e. give SVM similar treatment to VMX - Update Xen's TSC info CPUID sub-leaves as appropriate - Add support for Hyper-V's extended hypercalls, where "support" at this point is just forwarding the hypercalls to userspace - Clean up the kvm->lock vs. kvm->srcu sequences when updating the PMU and MSR filters - One-off fixes and cleanups - Fix and cleanup the range-based TLB flushing code, used when KVM is running on Hyper-V - Add support for filtering PMU events using a mask. If userspace wants to restrict heavily what events the guest can use, it can now do so without needing an absurd number of filter entries - Clean up KVM's handling of "PMU MSRs to save", especially when vPMU support is disabled - Add PEBS support for Intel Sapphire Rapids - Fix a mostly benign overflow bug in SEV's send|receive_update_data() - Move several SVM-specific flags into vcpu_svm x86 Intel: - Handle NMI VM-Exits before leaving the noinstr region - A few trivial cleanups in the VM-Enter flows - Stop enabling VMFUNC for L1 purely to document that KVM doesn't support EPTP switching (or any other VM function) for L1 - Fix a crash when using eVMCS's enlighted MSR bitmaps Generic: - Clean up the hardware enable and initialization flow, which was scattered around multiple arch-specific hooks. Instead, just let the arch code call into generic code. Both x86 and ARM should benefit from not having to fight common KVM code's notion of how to do initialization - Account allocations in generic kvm_arch_alloc_vm() - Fix a memory leak if coalesced MMIO unregistration fails selftests: - On x86, cache the CPU vendor (AMD vs. Intel) and use the info to emit the correct hypercall instruction instead of relying on KVM to patch in VMMCALL - Use TAP interface for kvm_binary_stats_test and tsc_msrs_test" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (325 commits) KVM: SVM: hyper-v: placate modpost section mismatch error KVM: x86/mmu: Make tdp_mmu_allowed static KVM: arm64: nv: Use reg_to_encoding() to get sysreg ID KVM: arm64: nv: Only toggle cache for virtual EL2 when SCTLR_EL2 changes KVM: arm64: nv: Filter out unsupported features from ID regs KVM: arm64: nv: Emulate EL12 register accesses from the virtual EL2 KVM: arm64: nv: Allow a sysreg to be hidden from userspace only KVM: arm64: nv: Emulate PSTATE.M for a guest hypervisor KVM: arm64: nv: Add accessors for SPSR_EL1, ELR_EL1 and VBAR_EL1 from virtual EL2 KVM: arm64: nv: Handle SMCs taken from virtual EL2 KVM: arm64: nv: Handle trapped ERET from virtual EL2 KVM: arm64: nv: Inject HVC exceptions to the virtual EL2 KVM: arm64: nv: Support virtual EL2 exceptions KVM: arm64: nv: Handle HCR_EL2.NV system register traps KVM: arm64: nv: Add nested virt VCPU primitives for vEL2 VCPU state KVM: arm64: nv: Add EL2 system registers to vcpu context KVM: arm64: nv: Allow userspace to set PSR_MODE_EL2x KVM: arm64: nv: Reset VCPU to EL2 registers if VCPU nested virt is set KVM: arm64: nv: Introduce nested virtualization VCPU feature KVM: arm64: Use the S2 MMU context to iterate over S2 table ...
2023-02-21Merge tag 'kvm-x86-apic-6.3' of https://github.com/kvm-x86/linux into HEADPaolo Bonzini1-0/+55
KVM x86 APIC changes for 6.3: - Remove a superfluous variables from apic_get_tmcct() - Fix various edge cases in x2APIC MSR emulation - Mark APIC timer as expired if its in one-shot mode and the count underflows while the vCPU task was being migrated - Reset xAPIC when userspace forces "impossible" x2APIC => xAPIC transition
2023-02-20Merge tag 'sched-core-2023-02-20' of ↵Linus Torvalds1-13/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler updates from Ingo Molnar: - Improve the scalability of the CFS bandwidth unthrottling logic with large number of CPUs. - Fix & rework various cpuidle routines, simplify interaction with the generic scheduler code. Add __cpuidle methods as noinstr to objtool's noinstr detection and fix boatloads of cpuidle bugs & quirks. - Add new ABI: introduce MEMBARRIER_CMD_GET_REGISTRATIONS, to query previously issued registrations. - Limit scheduler slice duration to the sysctl_sched_latency period, to improve scheduling granularity with a large number of SCHED_IDLE tasks. - Debuggability enhancement on sys_exit(): warn about disabled IRQs, but also enable them to prevent a cascade of followup problems and repeat warnings. - Fix the rescheduling logic in prio_changed_dl(). - Micro-optimize cpufreq and sched-util methods. - Micro-optimize ttwu_runnable() - Micro-optimize the idle-scanning in update_numa_stats(), select_idle_capacity() and steal_cookie_task(). - Update the RSEQ code & self-tests - Constify various scheduler methods - Remove unused methods - Refine __init tags - Documentation updates - Misc other cleanups, fixes * tag 'sched-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (110 commits) sched/rt: pick_next_rt_entity(): check list_entry sched/deadline: Add more reschedule cases to prio_changed_dl() sched/fair: sanitize vruntime of entity being placed sched/fair: Remove capacity inversion detection sched/fair: unlink misfit task from cpu overutilized objtool: mem*() are not uaccess safe cpuidle: Fix poll_idle() noinstr annotation sched/clock: Make local_clock() noinstr sched/clock/x86: Mark sched_clock() noinstr x86/pvclock: Improve atomic update of last_value in pvclock_clocksource_read() x86/atomics: Always inline arch_atomic64*() cpuidle: tracing, preempt: Squash _rcuidle tracing cpuidle: tracing: Warn about !rcu_is_watching() cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG cpuidle: drivers: firmware: psci: Dont instrument suspend code KVM: selftests: Fix build of rseq test exit: Detect and fix irq disabled state in oops cpuidle, arm64: Fix the ARM64 cpuidle logic cpuidle: mvebu: Fix duplicate flags assignment sched/fair: Limit sched slice duration ...
2023-02-20Merge tag 'kvmarm-6.3' of ↵Paolo Bonzini3-5/+1
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 updates for 6.3 - Provide a virtual cache topology to the guest to avoid inconsistencies with migration on heterogenous systems. Non secure software has no practical need to traverse the caches by set/way in the first place. - Add support for taking stage-2 access faults in parallel. This was an accidental omission in the original parallel faults implementation, but should provide a marginal improvement to machines w/o FEAT_HAFDBS (such as hardware from the fruit company). - A preamble to adding support for nested virtualization to KVM, including vEL2 register state, rudimentary nested exception handling and masking unsupported features for nested guests. - Fixes to the PSCI relay that avoid an unexpected host SVE trap when resuming a CPU when running pKVM. - VGIC maintenance interrupt support for the AIC - Improvements to the arch timer emulation, primarily aimed at reducing the trap overhead of running nested. - Add CONFIG_USERFAULTFD to the KVM selftests config fragment in the interest of CI systems. - Avoid VM-wide stop-the-world operations when a vCPU accesses its own redistributor. - Serialize when toggling CPACR_EL1.SMEN to avoid unexpected exceptions in the host. - Aesthetic and comment/kerneldoc fixes - Drop the vestiges of the old Columbia mailing list and add [Oliver] as co-maintainer This also drags in arm64's 'for-next/sme2' branch, because both it and the PSCI relay changes touch the EL2 initialization code.
2023-02-15Merge tag 'kvm-s390-next-6.3-1' of ↵Paolo Bonzini2-148/+527
https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD * Two more V!=R patches * The last part of the cmpxchg patches * A few fixes
2023-02-15Merge tag 'kvm-riscv-6.3-1' of https://github.com/kvm-riscv/linux into HEADPaolo Bonzini3-89/+107
KVM/riscv changes for 6.3 - Fix wrong usage of PGDIR_SIZE to check page sizes - Fix privilege mode setting in kvm_riscv_vcpu_trap_redirect() - Redirect illegal instruction traps to guest - SBI PMU support for guest
2023-02-15Merge tag 'kvm-x86-selftests-6.3' of https://github.com/kvm-x86/linux into HEADPaolo Bonzini12-62/+63
KVM selftests changes for 6.3: - Cache the CPU vendor (AMD vs. Intel) and use the info to emit the correct hypercall instruction instead of relying on KVM to patch in VMMCALL - A variety of one-off cleanups and fixes
2023-02-15Merge tag 'kvm-x86-pmu-6.3' of https://github.com/kvm-x86/linux into HEADPaolo Bonzini1-5/+376
KVM x86 PMU changes for 6.3: - Add support for created masked events for the PMU filter to allow userspace to heavily restrict what events the guest can use without needing to create an absurd number of events - Clean up KVM's handling of "PMU MSRs to save", especially when vPMU support is disabled - Add PEBS support for Intel SPR
2023-02-13Merge branch kvm-arm64/misc into kvmarm/nextOliver Upton3-5/+1
* kvm-arm64/misc: : Miscellaneous updates : : - Convert CPACR_EL1_TTA to the new, generated system register : definitions. : : - Serialize toggling CPACR_EL1.SMEN to avoid unexpected exceptions when : accessing SVCR in the host. : : - Avoid quiescing the guest if a vCPU accesses its own redistributor's : SGIs/PPIs, eliminating the need to IPI. Largely an optimization for : nested virtualization, as the L1 accesses the affected registers : rather often. : : - Conversion to kstrtobool() : : - Common definition of INVALID_GPA across architectures : : - Enable CONFIG_USERFAULTFD for CI runs of KVM selftests KVM: arm64: Fix non-kerneldoc comments KVM: selftests: Enable USERFAULTFD KVM: selftests: Remove redundant setbuf() arm64/sysreg: clean up some inconsistent indenting KVM: MMU: Make the definition of 'INVALID_GPA' common KVM: arm64: vgic-v3: Use kstrtobool() instead of strtobool() KVM: arm64: vgic-v3: Limit IPI-ing when accessing GICR_{C,S}ACTIVER0 KVM: arm64: Synchronize SMEN on vcpu schedule out KVM: arm64: Kill CPACR_EL1_TTA definition Signed-off-by: Oliver Upton <[email protected]>
2023-02-08KVM: selftests: Remove duplicate macro definitionShaoqin Huang1-3/+0
The KVM_GUEST_PAGE_TABLE_MIN_PADDR macro has been defined in include/kvm_util_base.h. So remove the duplicate definition in lib/kvm_util.c. Fixes: cce0c23dd944 ("KVM: selftests: Add wrapper to allocate page table page") Signed-off-by: Shaoqin Huang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-02-08KVM: selftests: Clean up misnomers in xen_shinfo_testMichal Luczaj1-8/+5
As discussed[*], relabel the poorly named structs to align with the current KVM nomenclature. Old names are a leftover from before commit 52491a38b2c2 ("KVM: Initialize gfn_to_pfn_cache locks in dedicated helper"), which i.a. introduced kvm_gpc_init() and renamed kvm_gfn_to_pfn_cache_init()/ _destroy() to kvm_gpc_activate()/_deactivate(). Partly in an effort to avoid implying that the cache really is destroyed/freed. While at it, get rid of #define GPA_INVALID, which being used as a GFN, is not only misnamed, but also unnecessarily reinvents a UAPI constant. No functional change intended. [*] https://lore.kernel.org/r/[email protected] Signed-off-by: Michal Luczaj <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-02-08selftests: KVM: Replace optarg with arg in guest_modes_cmdlineShaoqin Huang1-1/+1
The parameter arg in guest_modes_cmdline not being used now, and the optarg should be replaced with arg in guest_modes_cmdline. And this is the chance to change strtoul() to atoi_non_negative(), since guest mode ID will never be negative. Signed-off-by: Shaoqin Huang <[email protected]> Fixes: e42ac777d661 ("KVM: selftests: Factor out guest mode code") Reviewed-by: Andrew Jones <[email protected]> Reviewed-by: Vipin Sharma <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-02-07KVM: selftests: Assign guest page size in sync area early in memslot_perf_testGavin Shan1-2/+1
The guest page size in the synchronization area is needed by all test cases. So it's reasonable to set it in the unified preparation function (prepare_vm()). Signed-off-by: Gavin Shan <[email protected]> Reviewed-by: Maciej S. Szmigiero <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-02-07KVM: selftests: Remove duplicate VM creation in memslot_perf_testGavin Shan1-2/+0
Remove a spurious call to __vm_create_with_one_vcpu() that was introduced by a merge gone sideways. Fixes: eb5618911af0 ("Merge tag 'kvmarm-6.2' of https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD") Signed-off-by: Gavin Shan <[email protected]> Reviewed-by: Maciej S. Szmigiero <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-02-07KVM: s390: selftest: memop: Add cmpxchg testsJanis Schoetterl-Glausch1-15/+392
Test successful exchange, unsuccessful exchange, storage key protection and invalid arguments. Signed-off-by: Janis Schoetterl-Glausch <[email protected]> Acked-by: Janosch Frank <[email protected]> Link: https://lore.kernel.org/r/[email protected] Message-Id: <[email protected]> Signed-off-by: Janosch Frank <[email protected]>
2023-02-07KVM: s390: selftest: memop: Fix integer literalJanis Schoetterl-Glausch1-1/+1
The address is a 64 bit value, specifying a 32 bit value can crash the guest. In this case things worked out with -O2 but not -O0. Signed-off-by: Janis Schoetterl-Glausch <[email protected]> Fixes: 1bb873495a9e ("KVM: s390: selftests: Add more copy memop tests") Reviewed-by: Thomas Huth <[email protected]> Link: https://lore.kernel.org/r/[email protected] Message-Id: <[email protected]> Signed-off-by: Janosch Frank <[email protected]>
2023-02-07KVM: s390: selftest: memop: Fix wrong address being used in testJanis Schoetterl-Glausch1-2/+2
The guest code sets the key for mem1 only. In order to provoke a protection exception the test codes needs to address mem1. Signed-off-by: Janis Schoetterl-Glausch <[email protected]> Reviewed-by: Nico Boehr <[email protected]> Link: https://lore.kernel.org/r/[email protected] Message-Id: <[email protected]> Signed-off-by: Janosch Frank <[email protected]>
2023-02-07KVM: s390: selftest: memop: Fix typoJanis Schoetterl-Glausch1-1/+1
"acceeded" isn't a word, should be "exceeded". Signed-off-by: Janis Schoetterl-Glausch <[email protected]> Reviewed-by: Thomas Huth <[email protected]> Reviewed-by: Nico Boehr <[email protected]> Link: https://lore.kernel.org/r/[email protected] Message-Id: <[email protected]> Signed-off-by: Janosch Frank <[email protected]>
2023-02-07KVM: s390: selftest: memop: Add bad address testJanis Schoetterl-Glausch1-1/+3
Add a test that tries a real write to a bad address. The existing CHECK_ONLY test doesn't cover all paths. Signed-off-by: Janis Schoetterl-Glausch <[email protected]> Reviewed-by: Nico Boehr <[email protected]> Reviewed-by: Janosch Frank <[email protected]> Link: https://lore.kernel.org/r/[email protected] Message-Id: <[email protected]> Signed-off-by: Janosch Frank <[email protected]>
2023-02-07KVM: s390: selftest: memop: Move testlist into mainJanis Schoetterl-Glausch1-65/+66
This allows checking if the necessary requirements for a test case are met via an arbitrary expression. In particular, it is easy to check if certain bits are set in the memop extension capability. Signed-off-by: Janis Schoetterl-Glausch <[email protected]> Reviewed-by: Thomas Huth <[email protected]> Reviewed-by: Janosch Frank <[email protected]> Link: https://lore.kernel.org/r/[email protected] Message-Id: <[email protected]> Signed-off-by: Janosch Frank <[email protected]>
2023-02-07KVM: s390: selftest: memop: Replace macros by functionsJanis Schoetterl-Glausch1-43/+39
Replace the DEFAULT_* test helpers by functions, as they don't need the extra flexibility. Signed-off-by: Janis Schoetterl-Glausch <[email protected]> Reviewed-by: Thomas Huth <[email protected]> Acked-by: Janosch Frank <[email protected]> Link: https://lore.kernel.org/r/[email protected] Message-Id: <[email protected]> Signed-off-by: Janosch Frank <[email protected]>
2023-02-07KVM: s390: selftest: memop: Pass mop_desc via pointerJanis Schoetterl-Glausch1-22/+22
The struct is quite large, so this seems nicer. Signed-off-by: Janis Schoetterl-Glausch <[email protected]> Reviewed-by: Thomas Huth <[email protected]> Reviewed-by: Janosch Frank <[email protected]> Link: https://lore.kernel.org/r/[email protected] Message-Id: <[email protected]> Signed-off-by: Janosch Frank <[email protected]>
2023-02-07KVM: selftests: Compile s390 tests with -march=z10Nina Schoetterl-Glausch1-0/+3
The guest used in s390 kvm selftests is not be set up to handle all instructions the compiler might emit, i.e. vector instructions, leading to crashes. Limit what the compiler emits to the oldest machine model currently supported by Linux. Signed-off-by: Nina Schoetterl-Glausch <[email protected]> Reviewed-by: Janosch Frank <[email protected]> Reviewed-by: Thomas Huth <[email protected]> Link: https://lore.kernel.org/r/[email protected] Message-Id: <[email protected]> Signed-off-by: Janosch Frank <[email protected]>
2023-02-06KVM: selftests: Enable USERFAULTFDMark Brown1-0/+1
The page_fault_test KVM selftest requires userfaultfd but the config fragment for the KVM selftests does not enable it, meaning that those tests are skipped in CI systems that rely on appropriate settings in the config fragments except on S/390 which happens to have it in defconfig. Enable the option in the config fragment so that the tests get run. Signed-off-by: Mark Brown <[email protected]> Reviewed-by: Sean Christopherson <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Oliver Upton <[email protected]>
2023-02-04Merge tag 'kvmarm-fixes-6.2-3' of ↵Paolo Bonzini1-84/+103
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 fixes for 6.2, take #3 - Yet another fix for non-CPU accesses to the memory backing the VGICv3 subsystem - A set of fixes for the setlftest checking for the S1PTW behaviour after the fix that went in ealier in the cycle
2023-02-03KVM: selftests: Remove redundant setbuf()Shaoqin Huang2-5/+0
Since setbuf(stdout, NULL) has been called in kvm_util.c with __attribute((constructor)). Selftests no need to setup it in their own code. Signed-off-by: Shaoqin Huang <[email protected]> Reviewed-by: Sean Christopherson <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Oliver Upton <[email protected]>
2023-02-01KVM: selftests: Verify APIC_ID is set when forcing x2APIC=>xAPIC transitionEmanuele Giuseppe Esposito1-0/+55
Add a sub-test to verify that KVM stuffs the APIC_ID when userspace forces a transition from x2APIC to xAPIC without first disabling the APIC. Such a transition is architecturally disallowed (WRMSR will #GP), but needs to be handled by KVM to allow userspace to emulate RESET (ignoring that userspace should also stuff local APIC state on RESET). Signed-off-by: Emanuele Giuseppe Esposito <[email protected]> Link: https://lore.kernel.org/r/[email protected] Co-developed-by: Sean Christopherson <[email protected]> Signed-off-by: Sean Christopherson <[email protected]>
2023-02-01KVM: selftests: Test Hyper-V extended hypercall exit to userspaceVipin Sharma3-0/+99
Hyper-V extended hypercalls by default exit to userspace. Verify userspace gets the call, update the result and then verify in guest correct result is received. Add KVM_EXIT_HYPERV to list of "known" hypercalls so errors generate pretty strings. Signed-off-by: Vipin Sharma <[email protected]> Reviewed-by: David Matlack <[email protected]> Link: https://lore.kernel.org/r/[email protected] [sean: add KVM_EXIT_HYPERV to exit_reasons_known] Signed-off-by: Sean Christopherson <[email protected]>
2023-02-01KVM: selftests: Replace hardcoded Linux OS id with HYPERV_LINUX_OS_IDVipin Sharma1-1/+1
Use HYPERV_LINUX_OS_ID macro instead of hardcoded 0x8100 << 48 Signed-off-by: Vipin Sharma <[email protected]> Reviewed-by: Vitaly Kuznetsov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-02-01KVM: selftests: Test Hyper-V extended hypercall enablementVipin Sharma2-0/+14
Test Hyper-V extended hypercall, HV_EXT_CALL_QUERY_CAPABILITIES (0x8001), access denied and invalid parameter cases. Access is denied if CPUID.0x40000003.EBX BIT(20) is not set. Invalid parameter if call has fast bit set. Signed-off-by: Vipin Sharma <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2023-01-31Merge tag 'v6.2-rc6' into sched/core, to pick up fixesIngo Molnar13-143/+82
Pick up fixes before merging another batch of cpuidle updates. Signed-off-by: Ingo Molnar <[email protected]>
2023-01-30KVM: selftests: Fix build of rseq testMark Brown1-13/+3
The KVM rseq test is failing to build in -next due to a commit merged from the tip tree which adds a wrapper for sys_getcpu() to the rseq kselftests, conflicting with the wrapper already included in the KVM selftest: rseq_test.c:48:13: error: conflicting types for 'sys_getcpu' 48 | static void sys_getcpu(unsigned *cpu) | ^~~~~~~~~~ In file included from rseq_test.c:23: ../rseq/rseq.c:82:12: note: previous definition of 'sys_getcpu' was here 82 | static int sys_getcpu(unsigned *cpu, unsigned *node) | ^~~~~~~~~~ Fix this by removing the local wrapper and moving the result check up to the caller. Fixes: 99babd04b250 ("selftests/rseq: Implement rseq numa node id field selftest") Signed-off-by: Mark Brown <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Acked-by: Mathieu Desnoyers <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2023-01-29KVM: selftests: aarch64: Test read-only PT memory regionsRicardo Koller1-7/+11
Extend the read-only memslot tests in page_fault_test to test read-only PT (Page table) memslots. Note that this was not allowed before commit 406504c7b040 ("KVM: arm64: Fix S1PTW handling on RO memslots") as all S1PTW faults were treated as writes which resulted in an (unrecoverable) exception inside the guest. Signed-off-by: Ricardo Koller <[email protected]> Reviewed-by: Oliver Upton <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> Link: https://lore.kernel.org/r/[email protected]
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