diff options
| author | Oliver Upton <oupton@google.com> | 2020-10-28 02:10:44 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-11-08 14:02:16 +0300 |
| commit | ac4a4d6de22e674cd6e3fe57199a15383496aad2 (patch) | |
| tree | 0396b02c908cf536f835fbbbd2e29deb361fd041 /tools/testing/selftests/kvm/include | |
| parent | 29faeb9632012d6c3fa4aa33c3d589b9ff18b206 (diff) | |
| download | linux-ac4a4d6de22e674cd6e3fe57199a15383496aad2.tar.xz | |
selftests: kvm: test enforcement of paravirtual cpuid features
Add a set of tests that ensure the guest cannot access paravirtual msrs
and hypercalls that have been disabled in the KVM_CPUID_FEATURES leaf.
Expect a #GP in the case of msr accesses and -KVM_ENOSYS from
hypercalls.
Cc: Jim Mattson <jmattson@google.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Reviewed-by: Aaron Lewis <aaronlewis@google.com>
Message-Id: <20201027231044.655110-7-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests/kvm/include')
| -rw-r--r-- | tools/testing/selftests/kvm/include/kvm_util.h | 3 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/include/x86_64/processor.h | 12 |
2 files changed, 15 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h index 356930690bea..77f53dbc34ff 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -63,6 +63,9 @@ enum vm_mem_backing_src_type { int kvm_check_cap(long cap); int vm_enable_cap(struct kvm_vm *vm, struct kvm_enable_cap *cap); +int vcpu_enable_cap(struct kvm_vm *vm, uint32_t vcpu_id, + struct kvm_enable_cap *cap); +void vm_enable_dirty_ring(struct kvm_vm *vm, uint32_t ring_size); struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm); struct kvm_vm *_vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm); diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index 02530dc6339b..8e61340b3911 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -363,6 +363,18 @@ void vm_handle_exception(struct kvm_vm *vm, int vector, void (*handler)(struct ex_regs *)); /* + * set_cpuid() - overwrites a matching cpuid entry with the provided value. + * matches based on ent->function && ent->index. returns true + * if a match was found and successfully overwritten. + * @cpuid: the kvm cpuid list to modify. + * @ent: cpuid entry to insert + */ +bool set_cpuid(struct kvm_cpuid2 *cpuid, struct kvm_cpuid_entry2 *ent); + +uint64_t kvm_hypercall(uint64_t nr, uint64_t a0, uint64_t a1, uint64_t a2, + uint64_t a3); + +/* * Basic CPU control in CR0 */ #define X86_CR0_PE (1UL<<0) /* Protection Enable */ |