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ac8997e943
Change QEMU to use generated pidfile names instead of just a single globally-defined pidfile. This allows multiple QEMU instances to co-exist with different pidfiles. This is required for future tests that use multiple VMs to check for CID collissions. Additionally, this also places the burden of killing the QEMU process and cleaning up the pidfile on the caller of vm_start(). To help with this, a function terminate_pidfiles() is introduced that callers use to perform the cleanup. The terminate_pidfiles() function supports multiple pidfile removals because future patches will need to process two pidfiles at a time. Change QEMU_OPTS to be initialized inside the vm_start(). This allows the generated pidfile to be passed to the string assignment, and prepares for future vm-specific options as well (e.g., cid). Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://patch.msgid.link/20251108-vsock-selftests-fixes-and-improvements-v4-4-d5e8d6c87289@meta.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>