On Thu, 17 Nov 2016 17:27:20 +1100 Alexey Kardashevskiy <a...@ozlabs.ru> wrote:
> On 17/11/16 03:02, Igor Mammedov wrote: > > This series removes global MAX_CPUMASK_BITS constant > > so that it won't inderectly influence maximum CPUs count > > supported by different targets. > > > > It replaces statically allocated bitmasks with dynamically > > allocated ones using '-smp maxcpus' value for setting > > bitmasks size. > > That would allocate just enough memory to handle all > > CPUs indexes that a QEMU instance would ever have. > > > > CC: Alexey Kardashevskiy <a...@ozlabs.ru> > > CC: Greg Kurz <gk...@linux.vnet.ibm.com> > > CC: David Gibson <da...@gibson.dropbear.id.au> > > CC: Eduardo Habkost <ehabk...@redhat.com> > > CC: Paolo Bonzini <pbonz...@redhat.com> > > > > > > Igor Mammedov (2): > > add bitmap_free() wrapper > > numa: make -numa parser dynamically allocate CPUs masks > > Nice, with "ulimit -n 3072", guest kernel with CONFIG_NR_CPUS=2048, > "mc->max_cpus = 2048;" in hw/ppc/spapr.c, and "-smp 2048,threads=8" in > QEMU cmdline, I get all 2048 CPUs in the guest. > Nice ! And mc->max_cpus in hw/ppc/spapr.c no longer depends on MAX_CPUMASK_BITS since commit 079019f2e319b, so it is already possible to bump that value (1024 ? 2048 ?). Will you send a patch ? > > Tested-by: Alexey Kardashevskiy <a...@ozlabs.ru> > > > > > > include/qemu/bitmap.h | 5 +++++ > > include/sysemu/numa.h | 2 +- > > include/sysemu/sysemu.h | 7 ------- > > numa.c | 19 ++++++++++++------- > > vl.c | 5 ----- > > 5 files changed, 18 insertions(+), 20 deletions(-) > > > >
