From 29cb4187497dcc6be80c9cd2a87764be89d940f6 Mon Sep 17 00:00:00 2001 From: Greg Kurz Date: Thu, 3 Oct 2019 14:02:00 +0200 Subject: spapr: Set VSMT to smp_threads by default Support for setting VSMT is available in KVM since linux-4.13. Most distros that support KVM on POWER already have it. It thus seem reasonable enough to have the default machine to set VSMT to smp_threads. This brings contiguous VCPU ids and thus brings their upper bound down to the machine's max_cpus. This is especially useful for XIVE KVM devices, which may thus allocate only one VP descriptor per VCPU. Signed-off-by: Greg Kurz Message-Id: <157010411885.246126.12610015369068227139.stgit@bahia.lan> Signed-off-by: David Gibson --- include/hw/ppc/spapr.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index cbd1a4c..2009eb6 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -122,6 +122,7 @@ struct SpaprMachineClass { bool broken_host_serial_model; /* present real host info to the guest */ bool pre_4_1_migration; /* don't migrate hpt-max-page-size */ bool linux_pci_probe; + bool smp_threads_vsmt; /* set VSMT to smp_threads by default */ void (*phb_placement)(SpaprMachineState *spapr, uint32_t index, uint64_t *buid, hwaddr *pio, -- cgit v1.1