linux-dev/tools/testing/selftests/kvm/lib/s390x, branch linus/master

KVM: selftests: Add wrapper to allocate page table page

2021-06-24T15:47:49Z

Add a helper to allocate a page for use in constructing the guest's page tables. All architectures have identical address and memslot requirements (which appear to be arbitrary anyways). No functional change intended. Signed-off-by: Sean Christopherson Message-Id: <20210622200529.3650424-15-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Unconditionally use memslot '0' for page table allocations

2021-06-24T15:47:48Z

Drop the memslot param from virt_pg_map() and virt_map() and shove the hardcoded '0' down to the vm_phy_page_alloc() calls. No functional change intended. Signed-off-by: Sean Christopherson Message-Id: <20210622200529.3650424-13-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Unconditionally use memslot 0 for vaddr allocations

2021-06-24T15:47:42Z

Drop the memslot param(s) from vm_vaddr_alloc() now that all callers directly specific '0' as the memslot. Drop the memslot param from virt_pgd_alloc() as well since vm_vaddr_alloc() is its only user. I.e. shove the hardcoded '0' down to the vm_phy_pages_alloc() calls. No functional change intended. Signed-off-by: Sean Christopherson Signed-off-by: Paolo Bonzini

Merge tag 'kvm-s390-next-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

2020-12-12T08:58:31Z

KVM: s390: Features and Test for 5.11 - memcg accouting for s390 specific parts of kvm and gmap - selftest for diag318 - new kvm_stat for when async_pf falls back to sync The selftest even triggers a non-critical bug that is unrelated to diag318, fix will follow later.

KVM: selftests: sync_regs test for diag318

2020-12-10T12:36:05Z

The DIAGNOSE 0x0318 instruction, unique to s390x, is a privileged call that must be intercepted via SIE, handled in userspace, and the information set by the instruction is communicated back to KVM. To test the instruction interception, an ad-hoc handler is defined which simply has a VM execute the instruction and then userspace will extract the necessary info. The handler is defined such that the instruction invocation occurs only once. It is up to the caller to determine how the info returned by this handler should be used. The diag318 info is communicated from userspace to KVM via a sync_regs call. This is tested during a sync_regs test, where the diag318 info is requested via the handler, then the info is stored in the appropriate register in KVM via a sync registers call. If KVM does not support diag318, then the tests will print a message stating that diag318 was skipped, and the asserts will simply test against a value of 0. Signed-off-by: Collin Walling Link: https://lore.kernel.org/r/20201207154125.10322-1-walling@linux.ibm.com Acked-by: Janosch Frank Acked-by: Cornelia Huck Reviewed-by: Christian Borntraeger Signed-off-by: Christian Borntraeger

KVM: selftests: Make vm_create_default common

2020-11-15T14:49:19Z

The code is almost 100% the same anyway. Just move it to common and add a few arch-specific macros. Reviewed-by: Peter Xu Reviewed-by: Ben Gardon Signed-off-by: Andrew Jones Message-Id: <20201111122636.73346-5-drjones@redhat.com> Signed-off-by: Paolo Bonzini

selftests: kvm: Add exception handling to selftests

2020-11-08T11:02:15Z

Add the infrastructure needed to enable exception handling in selftests. This allows any of the exception and interrupt vectors to be overridden in the guest. Signed-off-by: Aaron Lewis Reviewed-by: Alexander Graf Message-Id: <20201012194716.3950330-4-aaronlewis@google.com> Signed-off-by: Paolo Bonzini

selftests: kvm: Clear uc so UCALL_NONE is being properly reported

2020-11-08T11:02:14Z

Ensure the out value 'uc' in get_ucall() is properly reporting UCALL_NONE if the call fails. The return value will be correctly reported, however, the out parameter 'uc' will not be. Clear the struct to ensure the correct value is being reported in the out parameter. Signed-off-by: Aaron Lewis Reviewed-by: Andrew Jones Reviewed-by: Alexander Graf Message-Id: <20201012194716.3950330-3-aaronlewis@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Use kernel's list instead of homebrewed replacement

2020-04-15T16:08:42Z

Replace the KVM selftests' homebrewed linked lists for vCPUs and memory regions with the kernel's 'struct list_head'. Signed-off-by: Sean Christopherson Reviewed-by: Andrew Jones Message-Id: <20200410231707.7128-3-sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Share common API documentation

2020-03-16T16:59:02Z

Move function documentation comment blocks to the header files in order to avoid duplicating them for each architecture. While at it clean up and fix up the comment blocks. Signed-off-by: Andrew Jones Signed-off-by: Paolo Bonzini