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_rm_xics.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_rm_xics.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_rm_xics.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_rm_xics.c b/arch/powerpc/kvm/book3s_hv_rm_xics.c index 8b9f35689648..b3f5786b20dc 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_xics.c +++ b/arch/powerpc/kvm/book3s_hv_rm_xics.c @@ -767,6 +767,14 @@ static void icp_eoi(struct irq_chip *c, u32 hwirq, __be32 xirr, bool *again) void __iomem *xics_phys; int64_t rc; + if (kvmhv_on_pseries()) { + unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; + + iosync(); + plpar_hcall_raw(H_EOI, retbuf, hwirq); + return; + } + rc = pnv_opal_pci_msi_eoi(c, hwirq); if (rc) |