tree dffd89821476932f48d01b9d33a854a523423187
parent b1e73a7c5a02bcd0e5b840c0e226e4681f33c932
author Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com> 1319631540 +0200
committer Avi Kivity <avi@redhat.com> 1323177544 +0200

Set numa topology for max_cpus

qemu-kvm passes numa/SRAT topology information for smp_cpus to SeaBIOS. However
SeaBIOS always expects to setup max_cpus number of SRAT cpu entries
(MaxCountCPUs variable in build_srat function of Seabios). When qemu-kvm runs
with smp_cpus != max_cpus (e.g. -smp 2,maxcpus=4), Seabios will mistakenly use
memory SRAT info for setting up CPU SRAT entries for the offline CPUs. Wrong
SRAT memory entries are also created. This breaks NUMA in a guest.
Fix by setting up SRAT info for max_cpus in qemu-kvm.

Signed-off-by: Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>