win-dmp becomes available only once the guest exposes a Windows dump
header through vmcoreinfo. Forge exactly such a note (an ELF note
header followed by a WinDumpHeader64 carrying the PAGE/DU64
signatures, the layout a Windows guest with the QEMU vmcoreinfo writer
produces), place it in guest RAM, point the vmcoreinfo device at it via
fw_cfg, and check that win-dmp flips from unavailable to available.
This exercises win_dump_available()'s positive path without a real
Windows guest. It only covers availability reporting; the actual
win-dmp generation (create_win_dump()) needs real Windows kernel
structures and is not exercised here.
The test is registered only on x86_64 with a vmcoreinfo device present.
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20260619101834.228432-8-den@openvz.org>
49854252fc