kernel/linux.git/tools/testing/selftests/kvm, branch v4.19.16

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2018-09-21T14:21:42+00:00

Paolo writes: "It's mostly small bugfixes and cleanups, mostly around x86 nested virtualization. One important change, not related to nested virtualization, is that the ability for the guest kernel to trap CPUID instructions (in Linux that's the ARCH_SET_CPUID arch_prctl) is now masked by default. This is because the feature is detected through an MSR; a very bad idea that Intel seems to like more and more. Some applications choke if the other fields of that MSR are not initialized as on real hardware, hence we have to disable the whole MSR by default, as was the case before Linux 4.12." * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (23 commits) KVM: nVMX: Fix bad cleanup on error of get/set nested state IOCTLs kvm: selftests: Add platform_info_test KVM: x86: Control guest reads of MSR_PLATFORM_INFO KVM: x86: Turbo bits in MSR_PLATFORM_INFO nVMX x86: Check VPID value on vmentry of L2 guests nVMX x86: check posted-interrupt descriptor addresss on vmentry of L2 KVM: nVMX: Wake blocked vCPU in guest-mode if pending interrupt in virtual APICv KVM: VMX: check nested state and CR4.VMXE against SMM kvm: x86: make kvm_{load|put}_guest_fpu() static x86/hyper-v: rename ipi_arg_{ex,non_ex} structures KVM: VMX: use preemption timer to force immediate VMExit KVM: VMX: modify preemption timer bit only when arming timer KVM: VMX: immediately mark preemption timer expired only for zero value KVM: SVM: Switch to bitmap_zalloc() KVM/MMU: Fix comment in walk_shadow_page_lockless_end() kvm: selftests: use -pthread instead of -lpthread KVM: x86: don't reset root in kvm_mmu_setup() kvm: mmu: Don't read PDPTEs when paging is not enabled x86/kvm/lapic: always disable MMIO interface in x2APIC mode KVM: s390: Make huge pages unavailable in ucontrol VMs ...

kvm: selftests: Add platform_info_test

2018-09-19T22:51:47+00:00

Test guest access to MSR_PLATFORM_INFO when the capability is enabled or disabled. Signed-off-by: Drew Schmitt Signed-off-by: Paolo Bonzini

kvm: selftests: use -pthread instead of -lpthread

2018-09-19T22:26:44+00:00

I run into the following error testing/selftests/kvm/dirty_log_test.c:285: undefined reference to `pthread_create' testing/selftests/kvm/dirty_log_test.c:297: undefined reference to `pthread_join' collect2: error: ld returned 1 exit status my gcc version is gcc version 4.8.4 "-pthread" would work everywhere Signed-off-by: Lei Yang Signed-off-by: Paolo Bonzini

selftests: add headers_install to lib.mk

2018-09-05T14:12:09+00:00

If the kernel headers aren't installed we can't build all the tests. Add a new make target rule 'khdr' in the file lib.mk to generate the kernel headers and that gets include for every test-dir Makefile that includes lib.mk If the testdir in turn have its own sub-dirs the top_srcdir needs to be set to the linux-rootdir to be able to generate the kernel headers. Signed-off-by: Anders Roxell Reviewed-by: Fathi Boudra Signed-off-by: Shuah Khan (Samsung OSG)

kvm: selftest: add dirty logging test

2018-08-22T14:48:39+00:00

Test KVM dirty logging functionality. The test creates a standalone memory slot to test tracking the dirty pages since we can't really write to the default memory slot which still contains the guest ELF image. We have two threads running during the test: (1) the vcpu thread continuously dirties random guest pages by writting a iteration number to the first 8 bytes of the page (2) the host thread continuously fetches dirty logs for the testing memory region and verify each single bit of the dirty bitmap by checking against the values written onto the page Note that since the guest cannot calls the general userspace APIs like random(), it depends on the host to provide random numbers for the page indexes to dirty. Signed-off-by: Peter Xu Signed-off-by: Paolo Bonzini

kvm: selftest: pass in extra memory when create vm

2018-08-22T14:48:38+00:00

This information can be used to decide the size of the default memory slot, which will need to cover the extra pages with page tables. Signed-off-by: Peter Xu Signed-off-by: Paolo Bonzini

kvm: selftest: include the tools headers

2018-08-22T14:48:38+00:00

Let the kvm selftest include the tools headers, then we can start to use things there like bitmap operations. Signed-off-by: Peter Xu Signed-off-by: Paolo Bonzini

kvm: selftest: unify the guest port macros

2018-08-22T14:48:37+00:00

Most of the tests are using the same way to do guest to host sync but the code is mostly duplicated. Generalize the guest port macros into the common header file and use it in different tests. Meanwhile provide "struct guest_args" and a helper "guest_args_read()" to hide the register details when playing with these port operations on RDI and RSI. Signed-off-by: Peter Xu Signed-off-by: Paolo Bonzini

KVM: selftests: add tests for shadow VMCS save/restore

2018-08-06T15:58:44+00:00

This includes setting up the shadow VMCS and the secondary execution controls in lib/vmx.c. Signed-off-by: Paolo Bonzini

kvm: selftests: add test for nested state save/restore

2018-08-06T15:58:36+00:00

Signed-off-by: Paolo Bonzini