linux-stable.git/tools/testing/selftests/kvm/lib, branch v5.8

KVM: selftests: do not substitute SVM/VMX check with KVM_CAP_NESTED_STATE check

2020-06-11T16:35:17+00:00

state_test/smm_test use KVM_CAP_NESTED_STATE check as an indicator for
nested VMX/SVM presence and this is incorrect. Check for the required
features dirrectly.

Signed-off-by: Vitaly Kuznetsov 
Message-Id: <20200610135847.754289-2-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini

KVM: selftests: Ignore KVM 5-level paging support for VM_MODE_PXXV48_4K

2020-06-09T09:54:50+00:00

Explicitly set the VA width to 48 bits for the x86_64-only PXXV48_4K VM
mode instead of asserting the guest VA width is 48 bits.  The fact that
KVM supports 5-level paging is irrelevant unless the selftests opt-in to
5-level paging by setting CR4.LA57 for the guest.  The overzealous
assert prevents running the selftests on a kernel with 5-level paging
enabled.

Incorporate LA57 into the assert instead of removing the assert entirely
as a sanity check of KVM's CPUID output.

Fixes: 567a9f1e9deb ("KVM: selftests: Introduce VM_MODE_PXXV48_4K")
Reported-by: Sergio Perez Gonzalez 
Cc: Adriana Cervantes Jimenez 
Cc: Peter Xu 
Signed-off-by: Sean Christopherson 
Message-Id: <20200528021530.28091-1-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini

Merge branch 'kvm-amd-fixes' into HEAD

2020-05-13T16:14:05+00:00

KVM: selftests: Add KVM_SET_GUEST_DEBUG test

2020-05-07T10:13:42+00:00

Covers fundamental tests for KVM_SET_GUEST_DEBUG. It is very close to the debug
test in kvm-unit-test, but doing it from outside the guest.

Signed-off-by: Peter Xu 
Message-Id: <20200505205000.188252-4-peterx@redhat.com>
Signed-off-by: Paolo Bonzini

KVM: selftests: Fix build for evmcs.h

2020-05-06T10:51:36+00:00

I got this error when building kvm selftests:

/usr/bin/ld: /home/xz/git/linux/tools/testing/selftests/kvm/libkvm.a(vmx.o):/home/xz/git/linux/tools/testing/selftests/kvm/include/evmcs.h:222: multiple definition of `current_evmcs'; /tmp/cco1G48P.o:/home/xz/git/linux/tools/testing/selftests/kvm/include/evmcs.h:222: first defined here
/usr/bin/ld: /home/xz/git/linux/tools/testing/selftests/kvm/libkvm.a(vmx.o):/home/xz/git/linux/tools/testing/selftests/kvm/include/evmcs.h:223: multiple definition of `current_vp_assist'; /tmp/cco1G48P.o:/home/xz/git/linux/tools/testing/selftests/kvm/include/evmcs.h:223: first defined here

I think it's because evmcs.h is included both in a test file and a lib file so
the structs have multiple declarations when linking.  After all it's not a good
habit to declare structs in the header files.

Cc: Vitaly Kuznetsov 
Signed-off-by: Peter Xu 
Message-Id: <20200504220607.99627-1-peterx@redhat.com>
Signed-off-by: Paolo Bonzini

selftests: kvm: Add vm_get_fd() in kvm_util

2020-04-15T16:08:44+00:00

Introduces the vm_get_fd() function in kvm_util which returns
the VM file descriptor.

Reviewed-by: Andrew Jones 
Signed-off-by: Wainer dos Santos Moschetta 
Signed-off-by: Sean Christopherson 
Message-Id: <20200410231707.7128-8-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini

KVM: selftests: Add util to delete memory region

2020-04-15T16:08:42+00:00

Add a utility to delete a memory region, it will be used by x86's
set_memory_region_test.

Signed-off-by: Sean Christopherson 
Reviewed-by: Wainer dos Santos Moschetta 
Reviewed-by: Andrew Jones 
Message-Id: <20200410231707.7128-4-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini

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

2020-04-15T16:08:42+00:00

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: Take vcpu pointer instead of id in vm_vcpu_rm()

2020-04-15T16:08:41+00:00

The sole caller of vm_vcpu_rm() already has the vcpu pointer, take it
directly instead of doing an extra lookup.

Signed-off-by: Sean Christopherson 
Reviewed-by: Wainer dos Santos Moschetta 
Reviewed-by: Andrew Jones 
Message-Id: <20200410231707.7128-2-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini

KVM: selftests: Fix cosmetic copy-paste error in vm_mem_region_move()

2020-03-26T09:58:28+00:00

Fix a copy-paste typo in a comment and error message.

Signed-off-by: Sean Christopherson 
Message-Id: <20200320205546.2396-3-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini