This series brings EFI support to a reduced subset of kvm-unit-tests on x86_64. I'm sending it out for early review since it covers enough ground to allow adding KVM testcases for EFI-only environments. EFI support works by changing the test entrypoint to a stub entry point for the EFI loader to jump to in long mode, where the test binary exits EFI boot services, performs the remaining CPU bootstrapping, and then calls the testcase main(). Since the EFI loader only understands PE objects, the first commit introduces a `configure --efi` mode which builds each test as a shared lib. This shared lib is repackaged into a PE via objdump. Commit 2-4 take a trip from the asm entrypoint to C to exit EFI and relocate ELF .dynamic contents. Commit 5 adds post-EFI long mode x86_64 setup and calls the testcase. Commit 6 patches out some broken tests for EFI. Testcases that refuse to build as shared libs are also left disabled, these need some massaging. git tree: https://github.com/varadgautam/kvm-unit-tests/commits/efi-stub Varad Gautam (6): x86: Build tests as PE objects for the EFI loader x86: Call efi_main from _efi_pe_entry x86: efi_main: Get EFI memory map and exit boot services x86: efi_main: Self-relocate ELF .dynamic addresses cstart64.S: x86_64 bootstrapping after exiting EFI x86: Disable some breaking tests for EFI and modify vmexit test .gitignore | 2 + Makefile | 16 ++- configure | 11 ++ lib/linux/uefi.h | 337 ++++++++++++++++++++++++++++++++++++++++++++ x86/Makefile.common | 45 ++++-- x86/Makefile.x86_64 | 43 +++--- x86/cstart64.S | 78 ++++++++++ x86/efi.lds | 67 +++++++++ x86/efi_main.c | 167 ++++++++++++++++++++++ x86/vmexit.c | 7 + 10 files changed, 741 insertions(+), 32 deletions(-) create mode 100644 lib/linux/uefi.h create mode 100644 x86/efi.lds create mode 100644 x86/efi_main.c -- 2.30.2
