selftest/kho: update generation of initrd

2025-09-13T23:54:55+00:00

Use nolibc include directory rather than include a cumulative nolibc.h on the compiler command line and replace use of 'sudo cpio' with usr/gen_init_cpio. While on it fix spelling of KHO_FINALIZE Link: https://lkml.kernel.org/r/20250811082510.4154080-4-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) Suggested-by: Thomas Weißschuh Cc: Alexander Graf Cc: Baoquan He Cc: Changyuan Lyu Cc: Pasha Tatashin Cc: Pratyush Yadav Cc: Shuah Khan Signed-off-by: Andrew Morton

kho: add test for kexec handover

2025-08-02T19:01:41+00:00

Testing kexec handover requires a kernel driver that will generate some data and preserve it with KHO on the first boot and then restore that data and verify it was preserved properly after kexec. To facilitate such test, along with the kernel driver responsible for data generation, preservation and restoration add a script that runs a kernel in a VM with a minimal /init. The /init enables KHO, loads a kernel image for kexec and runs kexec reboot. After the boot of the kexeced kernel, the driver verifies that the data was properly preserved. [rppt@kernel.org: fix section mismatch] Link: https://lkml.kernel.org/r/aIiRC8fXiOXKbPM_@kernel.org Link: https://lkml.kernel.org/r/20250727083733.2590139-1-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) Cc: Alexander Graf Cc: Changyuan Lyu Cc: Pasha Tatashin Cc: Pratyush Yadav Cc: Shuah Khan Signed-off-by: Andrew Morton

kernel/linux.git/tools/testing/selftests/kho/init.c, branch v6.19.11

selftest/kho: update generation of initrd

kho: add test for kexec handover