linux-kernel - [PATCH 0/4] KVM: selftests: Improve error handling when opening files

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Message-ID: <20250516215909.2551628-1-seanjc@google.com>
Date: Fri, 16 May 2025 14:59:05 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>, Sean Christopherson <seanjc@...gle.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	James Houghton <jthoughton@...gle.com>
Subject: [PATCH 0/4] KVM: selftests: Improve error handling when opening files

Improve selftests' error reporting when opening a file fails, e.g. so that
failure to access a module param spits out a message about KVM not being
loaded, instead of a cryptic message about a param not being supported.

Sean Christopherson (4):
  KVM: selftests: Verify KVM is loaded when getting a KVM module param
  KVM: selftests: Add __open_path_or_exit() variant to provide extra
    help info
  KVM: selftests: Play nice with EACCES errors in open_path_or_exit()
  KVM: selftests: Print a more helpful message for EACCESS in access
    tracking test

 .../selftests/kvm/access_tracking_perf_test.c |  7 ++----
 .../testing/selftests/kvm/include/kvm_util.h  |  1 +
 .../selftests/kvm/include/x86/processor.h     |  6 ++++-
 tools/testing/selftests/kvm/lib/kvm_util.c    | 23 +++++++++++++++----
 .../testing/selftests/kvm/lib/x86/processor.c | 10 --------
 .../vmx_exception_with_invalid_guest_state.c  |  2 +-
 6 files changed, 28 insertions(+), 21 deletions(-)


base-commit: 7ef51a41466bc846ad794d505e2e34ff97157f7f
-- 
2.49.0.1112.g889b7c5bd8-goog