diff options
| author | Paul Mackerras <paulus@ozlabs.org> | 2018-10-08 16:31:05 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-10-09 16:04:27 +1100 |
| commit | f3c18e9342a443528137a303f3c391d42d3bb394 (patch) | |
| tree | 688bbc803689e5c06bb38d29a9807d1084826dd9 /arch/powerpc/kvm/book3s_hv.c | |
| parent | 360cae313702cdd0b90f82c261a8302fecef030a (diff) | |
KVM: PPC: Book3S HV: Use XICS hypercalls when running as a nested hypervisor
This adds code to call the H_IPI and H_EOI hypercalls when we are
running as a nested hypervisor (i.e. without the CPU_FTR_HVMODE cpu
feature) and we would otherwise access the XICS interrupt controller
directly or via an OPAL call.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 7a2f344af4f8..e8e56c188dfc 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -173,6 +173,10 @@ static bool kvmppc_ipi_thread(int cpu) { unsigned long msg = PPC_DBELL_TYPE(PPC_DBELL_SERVER); + /* If we're a nested hypervisor, fall back to ordinary IPIs for now */ + if (kvmhv_on_pseries()) + return false; + /* On POWER9 we can use msgsnd to IPI any cpu */ if (cpu_has_feature(CPU_FTR_ARCH_300)) { msg |= get_hard_smp_processor_id(cpu); @@ -5177,7 +5181,8 @@ static int kvmppc_book3s_init_hv(void) * indirectly, via OPAL. */ #ifdef CONFIG_SMP - if (!xive_enabled() && !local_paca->kvm_hstate.xics_phys) { + if (!xive_enabled() && !kvmhv_on_pseries() && + !local_paca->kvm_hstate.xics_phys) { struct device_node *np; np = of_find_compatible_node(NULL, NULL, "ibm,opal-intc"); |