kernel/linux.git/tools/testing/selftests/kvm/lib, branch v5.1.16

kvm: selftests: aarch64: fix default vm mode

2019-06-19T06:00:12+00:00

[ Upstream commit 55eda003f02f075bab0223a188e548dbf3ac8dfe ] VM_MODE_P52V48_4K is not a valid mode for AArch64. Replace its use in vm_create_default() with a mode that works and represents a good AArch64 default. (We didn't ever see a problem with this because we don't have any unit tests using vm_create_default(), but it's good to get it fixed in advance.) Reported-by: Thomas Huth Signed-off-by: Andrew Jones Signed-off-by: Paolo Bonzini Signed-off-by: Sasha Levin

selftests: kvm: add a selftest for SMM

2019-04-16T13:38:06+00:00

Add a simple test for SMM, based on VMX. The test implements its own sync between the guest and the host as using our ucall library seems to be too cumbersome: SMI handler is happening in real-address mode. This patch also fixes KVM_SET_NESTED_STATE to happen after KVM_SET_VCPU_EVENTS, in fact it places it last. This is because KVM needs to know whether the processor is in SMM or not. Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini

selftests: kvm/evmcs_test: complete I/O before migrating guest state

2019-04-16T13:37:39+00:00

Starting state migration after an IO exit without first completing IO may result in test failures. We already have two tests that need this (this patch in fact fixes evmcs_test, similar to what was fixed for state_test in commit 0f73bbc851ed, "KVM: selftests: complete IO before migrating guest state", 2019-03-13) and a third is coming. So, move the code to vcpu_save_state, and while at it do not access register state until after I/O is complete. Signed-off-by: Paolo Bonzini

KVM: selftests: complete IO before migrating guest state

2019-03-28T16:29:09+00:00

Documentation/virtual/kvm/api.txt states: NOTE: For KVM_EXIT_IO, KVM_EXIT_MMIO, KVM_EXIT_OSI, KVM_EXIT_PAPR and KVM_EXIT_EPR the corresponding operations are complete (and guest state is consistent) only after userspace has re-entered the kernel with KVM_RUN. The kernel side will first finish incomplete operations and then check for pending signals. Userspace can re-enter the guest with an unmasked signal pending to complete pending operations. Because guest state may be inconsistent, starting state migration after an IO exit without first completing IO may result in test failures, e.g. a proposed change to KVM's handling of %rip in its fast PIO handling[1] will cause the new VM, i.e. the post-migration VM, to have its %rip set to the IN instruction that triggered KVM_EXIT_IO, leading to a test assertion due to a stage mismatch. For simplicitly, require KVM_CAP_IMMEDIATE_EXIT to complete IO and skip the test if it's not available. The addition of KVM_CAP_IMMEDIATE_EXIT predates the state selftest by more than a year. [1] https://patchwork.kernel.org/patch/10848545/ Fixes: fa3899add1056 ("kvm: selftests: add basic test for state save and restore") Reported-by: Jim Mattson Signed-off-by: Sean Christopherson Signed-off-by: Paolo Bonzini

kvm: selftests: Fix region overlap check in kvm_util

2019-01-25T18:11:36+00:00

Fix a call to userspace_mem_region_find to conform to its spec of taking an inclusive, inclusive range. It was previously being called with an inclusive, exclusive range. Also remove a redundant region bounds check in vm_userspace_mem_region_add. Region overlap checking is already performed by the call to userspace_mem_region_find. Tested: Compiled tools/testing/selftests/kvm with -static Ran all resulting test binaries on an Intel Haswell test machine All tests passed Signed-off-by: Ben Gardon Reviewed-by: Jim Mattson Signed-off-by: Paolo Bonzini

kvm: selftests: ucall: fix exit mmio address guessing

2018-12-21T12:58:46+00:00

Fix two more bugs in the exit_mmio address guessing. The first bug was that the start and step calculations were wrong since they were dividing the number of address bits instead of the address space. The second other bug was that the guessing algorithm wasn't considering the valid physical and virtual address ranges correctly for an identity map. Signed-off-by: Andrew Jones Signed-off-by: Paolo Bonzini

kvm: selftests: aarch64: dirty_log_test: support greater than 40-bit IPAs

2018-12-21T10:28:30+00:00

When KVM has KVM_CAP_ARM_VM_IPA_SIZE we can test with > 40-bit IPAs by using the 'type' field of KVM_CREATE_VM. Signed-off-by: Andrew Jones Signed-off-by: Radim Krčmář

kvm: selftests: add pa-48/va-48 VM modes

2018-12-21T10:28:30+00:00

Signed-off-by: Andrew Jones Signed-off-by: Radim Krčmář

kvm: selftests: ucall: improve ucall placement in memory, fix unsigned comparison

2018-12-14T17:00:08+00:00

Based on a patch by Andrew Jones. Reported-by: Dan Carpenter Signed-off-by: Paolo Bonzini

KVM: selftests: implement an unchecked version of vcpu_ioctl()

2018-12-14T16:59:55+00:00

In case we want to test failing ioctls we need an option to not fail. Following _vcpu_run() precedent implement _vcpu_ioctl(). Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini