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[PULL,06/50] sysemu: support up to 1024 vCPUs

Message ID 20170301044405.1792-7-david@gibson.dropbear.id.au
State New
Headers show

Commit Message

David Gibson March 1, 2017, 4:43 a.m. UTC 
From: Greg Kurz <gkurz@linux.vnet.ibm.com>

Some systems can already provide more than 255 hardware threads.

Bumping the QEMU limit to 1024 seems reasonable:
- it has no visible overhead in top;
- the limit itself has no effect on hot paths.

Cc: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/spapr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 87d8366..0b57aad 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -2891,7 +2891,7 @@  static void spapr_machine_class_init(ObjectClass *oc, void *data)
     mc->init = ppc_spapr_init;
     mc->reset = ppc_spapr_reset;
     mc->block_default_type = IF_SCSI;
-    mc->max_cpus = 255;
+    mc->max_cpus = 1024;
     mc->no_parallel = 1;
     mc->default_boot_order = "";
     mc->default_ram_size = 512 * M_BYTE;