On Wed, Mar 09, 2011 at 11:46:57PM +1100, Anton Blanchard wrote: > >Hi, > >> The crashkernel region is specified via kernel cmdline, so why >> not just drop a failure when it overlaps with RMO region? >> Am I missing something? > >Unfortunately a ppc64 kernel requires a chunk of RMO memory. We would >need the ability to specify multiple crashkernel regions - about 32MB >in the RMO and the rest can be anywhere. That sounds pretty fragile for >a user to configure successfully on the cmdline. > >Thats why the ppc64 crashkernel region begins mid way through the RMO >region. It means both kernels get a chunk of RMO and we only have to >deal with one crashkernel reservation in all the tools and >documentation. > So, when I specify 128M in cmdline, 32M of them are RMO, and the rest 96M are normal memory? And when I want to free all of them, actually the 32M RMO will never be freed?
