KVM: selftests: Add a VMX test for LA57 nested state

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Add a selftest that verifies KVM's ability to save and restore
nested state when the L1 guest is using 5-level paging and the L2
guest is using 4-level paging. Specifically, canonicality tests of
the VMCS12 host-state fields should accept 57-bit virtual addresses.

Signed-off-by: Jim Mattson <jmattson@google.com>
Link: https://patch.msgid.link/20251028225827.2269128-5-jmattson@google.com
[sean: rename to vmx_nested_la57_state_test to prep nested_<test> namespace]
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Jim Mattson 2025-10-28 15:30:42 -07:00 • committed by Sean Christopherson

parent ec5806639e

commit 6a8818de21

2 changed files with 133 additions and 0 deletions

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tools/testing/selftests/kvm/Makefile.kvm

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132

tools/testing/selftests/kvm/x86/vmx_nested_la57_state_test.c

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