KVM: selftests: Extend set_sregs test to cover EFER

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Extend the set_sregs test to cover various bits in EFER. Update
TEST_INVALID_CR_BIT() to operate on EFER as well as CRx (and rename it
accordingly). Add test cases to check that EFER bits are disallowed
without the relevant CPUID enablement.

Assisted-by: Gemini:unknown-version
Signed-off-by: Yosry Ahmed <yosry@kernel.org>
Link: https://patch.msgid.link/20260713180153.2728382-3-yosry@kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Yosry Ahmed 2026-07-13 18:01:53 +00:00 • committed by Sean Christopherson

parent 184bd464bd

commit e43a21553a

2 changed files with 64 additions and 21 deletions

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tools/testing/selftests/kvm/include/x86/processor.h

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81

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

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