Re: [PATCH 0/2] i386: fixup number of logical CPUs when host-cache-info=on

[Igor Mammedov <imammedo@redhat.com>]

On Tue, 24 May 2022 14:48:29 -0500
"Moger, Babu" <babu.moger@amd.com> wrote:

> On 5/24/22 10:19, Igor Mammedov wrote:
> > On Tue, 24 May 2022 11:10:18 -0400
> > Igor Mammedov <imammedo@redhat.com> wrote:
> >
> > CCing AMD folks as that might be of interest to them  
> 
> I am trying to recreate the bug on my AMD system here.. Seeing this message..
> 
> qemu-system-x86_64: -numa node,nodeid=0,memdev=ram-node0: memdev=ram-node0
> is ambiguous
> 
> Here is my command line..
> 
> #qemu-system-x86_64 -name rhel8 -m 4096 -hda vdisk.qcow2 -enable-kvm -net
> nic  -nographic -machine q35,accel=kvm -cpu
> host,host-cache-info=on,l3-cache=off -smp
> 20,sockets=2,dies=1,cores=10,threads=1 -numa
> node,nodeid=0,memdev=ram-node0 -numa node,nodeid=1,memdev=ram-node1 -numa
> cpu,socket-id=0,node-id=0 -numa cpu,socket-id=1,node-id=1
> 
> Am I missing something?
Yep, sorry I've omitted -object memory-backend-foo definitions for
ram-node0 and ram-node1

one can use any memory backend, it doesn't really matter in this case,
for example following should do:
  -object memory-backend-ram,id=ram-node0,size=2G \
  -object memory-backend-ram,id=ram-node1,size=2G 


> 
> 
> >  
> >> Igor Mammedov (2):
> >>   x86: cpu: make sure number of addressable IDs for processor cores
> >>     meets the spec
> >>   x86: cpu: fixup number of addressable IDs for logical processors
> >>     sharing cache
> >>
> >>  target/i386/cpu.c | 20 ++++++++++++++++----
> >>  1 file changed, 16 insertions(+), 4 deletions(-)
> >>