On 7/30/20 10:14 AM, Steve Sistare wrote:
Provide the -pause command-line parameter and the QEMU_PAUSE environment
variable to briefly pause QEMU in main and allow a developer to attach gdb.
Useful when the developer does not invoke QEMU directly, such as when using
libvirt.
How would you set this option with libvirt?
It feels like you are trying to reinvent something that is already
well-documented:
https://www.berrange.com/posts/2011/10/12/debugging-early-startup-of-kvm-with-gdb-when-launched-by-libvirtd/
Usage:
qemu -pause <seconds>
or
export QEMU_PAUSE=<seconds>
Signed-off-by: Steve Sistare <steven.sist...@oracle.com>
---
qemu-options.hx | 9 +++++++++
softmmu/vl.c | 15 ++++++++++++++-
2 files changed, 23 insertions(+), 1 deletion(-)
@@ -3204,6 +3211,12 @@ void qemu_init(int argc, char **argv, char **envp)
case QEMU_OPTION_gdb:
add_device_config(DEV_GDB, optarg);
break;
+ case QEMU_OPTION_pause:
+ seconds = atoi(optarg);
atoi() cannot detect overflow. You should never use it in robust
parsing of untrusted input.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org
