RE: how to add LD_PRELOAD in the xml

...

How should I add LD_PRELOAD to domain xml. I guess within:

<qemu:commandline> <qemu:arg value='env=LD_PRELOAD=/usr/lib64/libtcmalloc.so'/> </qemu:commandline>

but this is generating syntax errors.

https://libvirt.org/kbase/qemu-passthrough-security.html

Note the bit in the example that shows:

<qemu:env name='ID' value='wibble'/>

So try:

<qemu:env name="LD_PRELOAD" value="/usr/lib64/libtcmalloc.so"/>

Thank you very much Laine!!!