KVM: selftests: Add macros to read/write+sync to/from guest memory

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Add SYNC_FROM_GUEST_AND_READ(vm, variable), to read a variable value
from the guest. Add WRITE_AND_SYNC_TO_GUEST(vm, variable, value) to
write a value to a guest variable. These macros improve the readability
of code which reads and writes data between host and guest in tests.

Use the new macro in existing tests that do back-to-back write+sync.

No functional changes are intended.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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David Matlack 2026-06-26 14:35:15 -07:00 • committed by Sean Christopherson

parent a262fc49e0

commit ac050f2adc

4 changed files with 24 additions and 26 deletions

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9

tools/testing/selftests/kvm/dirty_log_test.c

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tools/testing/selftests/kvm/include/kvm_util.h

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tools/testing/selftests/kvm/mmu_stress_test.c

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tools/testing/selftests/kvm/steal_time.c

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