On Mon, 11 May 2020 18:00:01 +0200 Philippe Mathieu-Daudé <phi...@redhat.com> wrote:
> Hi Eduardo, > > On 5/4/20 5:44 PM, Eduardo Habkost wrote: > > On Thu, Apr 30, 2020 at 11:46:06AM -0400, Igor Mammedov wrote: > >> Since 5.0 QEMU uses hostmem backend for allocating main guest RAM. > >> The backend however calls mbind() which is typically NOP > >> in case of default policy/absent host-nodes bitmap. > >> However when runing in container with black-listed mbind() > >> syscall, QEMU fails to start with error > >> "cannot bind memory to host NUMA nodes: Operation not permitted" > >> even when user hasn't provided host-nodes to pin to explictly > >> (which is the case with -m option) > >> > >> To fix issue, call mbind() only in case when user has provided > >> host-nodes explicitly (i.e. host_nodes bitmap is not empty). > >> That should allow to run QEMU in containers with black-listed > >> mbind() without memory pinning. If QEMU provided memory-pinning > >> is required user still has to white-list mbind() in container > >> configuration. > >> > >> Reported-by: Manuel Hohmann <mhohm...@physnet.uni-hamburg.de> > >> Signed-off-by: Igor Mammedov <imamm...@redhat.com> > > > > Queued on machine-next, thanks! > > I've been debugging this issue again today and figured it was not > merged, if possible can you add the "Cc: qemu-sta...@nongnu.org" tag > before sending your pull request? it's CCed already, so my impression was that will should picked up once it was reviewed. > > Thanks, > > Phil. >
