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| author |   Jim Mattson <jmattson@google.com> | 2020-10-26 11:09:22 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2020-10-31 10:04:38 -0400 |
| commit | 97a71a5455997d72adfd74e9d575d782d7c2ab9a (patch) | |
| tree | e0457dba18b679dfb5fa2c5fee815104cfc46495 /tools/testing/selftests/kvm/lib/x86_64/vmx.c | |
| parent | KVM: x86: Fix NULL dereference at kvm_msr_ignored_check() (diff) | |
| download | linux-dev-97a71a5455997d72adfd74e9d575d782d7c2ab9a.tar.xz linux-dev-97a71a5455997d72adfd74e9d575d782d7c2ab9a.zip | |
KVM: selftests: test behavior of unmapped L2 APIC-access address
Add a regression test for commit 671ddc700fd0 ("KVM: nVMX: Don't leak
L1 MMIO regions to L2").
First, check to see that an L2 guest can be launched with a valid
APIC-access address that is backed by a page of L1 physical memory.
Next, set the APIC-access address to a (valid) L1 physical address
that is not backed by memory. KVM can't handle this situation, so
resuming L2 should result in a KVM exit for internal error
(emulation).
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Message-Id: <20201026180922.3120555-1-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | tools/testing/selftests/kvm/lib/x86_64/vmx.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/lib/x86_64/vmx.c b/tools/testing/selftests/kvm/lib/x86_64/vmx.c index f1e00d43eea2..2448b30e8efa 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/vmx.c +++ b/tools/testing/selftests/kvm/lib/x86_64/vmx.c @@ -542,3 +542,12 @@ void prepare_eptp(struct vmx_pages *vmx, struct kvm_vm *vm, vmx->eptp_hva = addr_gva2hva(vm, (uintptr_t)vmx->eptp); vmx->eptp_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->eptp); } + +void prepare_virtualize_apic_accesses(struct vmx_pages *vmx, struct kvm_vm *vm, + uint32_t eptp_memslot) +{ + vmx->apic_access = (void *)vm_vaddr_alloc(vm, getpagesize(), + 0x10000, 0, 0); + vmx->apic_access_hva = addr_gva2hva(vm, (uintptr_t)vmx->apic_access); + vmx->apic_access_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->apic_access); +} |