Hello, This patch series enables kvm-unit-tests to get envs and args under UEFI. The host passes envs and args through files: 1. The host stores envs into ENVS.TXT and args into ARGS.TXT 2. The guest boots up and reads data from these files through UEFI file operation services 3. The file data is passed to corresponding setup functions As a result, several x86 test cases (e.g., kvmclock_test and vmexit) can now get envs/args from the host [1], thus do not report FAIL when running ./run-tests.sh. An alternative approach for envs/args passing under UEFI is to use QEMU's -append/-initrd options. However, this approach requires EFI binaries to be passed through QEMU's -kernel option. While currently, EFI binaries are loaded from a disk image. Changing this bootup process may make kvm-unit-tests (under UEFI) unable to run on bare-metal [2]. On the other hand, passing envs/args through files should work on bare-metal because UEFI's file operation services do not rely on QEMU's functionalities, thus working on bare-metal. The summary of this patch series: Patch #1 pulls Linux kernel's UEFI definitions for file operations. Patch #2 implements file read functions and envs setup functions. Patch #3 implements the args setup functions. Best regards, Zixuan [1] https://github.com/TheNetAdmin/KVM-Unit-Tests-dev-fork/issues/8 [2] https://lore.kernel.org/kvm/CAEDJ5ZQLm1rz+0a7MPPz3wMAoeTq2oH9z92sd0ZhCxEjWMkOpg@xxxxxxxxxxxxxx Zixuan Wang (3): x86 UEFI: pull UEFI definitions for file operations x86 UEFI: read envs from file x86 UEFI: read args from file lib/efi.c | 150 ++++++++++++++++++++++++++++++++++++++++++++++++ lib/linux/efi.h | 82 +++++++++++++++++++++++++- x86/efi/run | 36 +++++++++++- 3 files changed, 265 insertions(+), 3 deletions(-) -- 2.35.1
