From: "Cédric Le Goater" <clg@kaod.org>
To: kvm-ppc@vger.kernel.org
Cc: kvm@vger.kernel.org, "Paul Mackerras" <paulus@samba.org>,
"Cédric Le Goater" <clg@kaod.org>,
linuxppc-dev@lists.ozlabs.org,
"David Gibson" <david@gibson.dropbear.id.au>
Subject: [PATCH v4 15/17] KVM: PPC: Book3S HV: XIVE: activate XIVE exploitation mode
Date: Wed, 20 Mar 2019 09:37:49 +0100 [thread overview]
Message-ID: <20190320083751.27001-16-clg@kaod.org> (raw)
In-Reply-To: <20190320083751.27001-1-clg@kaod.org>
Full support for the XIVE native exploitation mode is now available,
advertise the capability KVM_CAP_PPC_IRQ_XIVE for guests running on
PowerNV KVM Hypervisors only. Support for nested guests (pseries KVM
Hypervisor) is not yet available. XIVE should also have been activated
which is default setting on POWER9 systems running a recent Linux
kernel.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
---
arch/powerpc/kvm/powerpc.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index b0858ee61460..f54926c78320 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -573,10 +573,11 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
#ifdef CONFIG_KVM_XIVE
case KVM_CAP_PPC_IRQ_XIVE:
/*
- * Return false until all the XIVE infrastructure is
- * in place including support for migration.
+ * We need XIVE to be enabled on the platform (implies
+ * a POWER9 processor) and the PowerNV platform, as
+ * nested is not yet supported.
*/
- r = 0;
+ r = xive_enabled() && !!cpu_has_feature(CPU_FTR_HVMODE);
break;
#endif
--
2.20.1
next prev parent reply other threads:[~2019-03-20 9:03 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-20 8:37 [PATCH v4 00/17] KVM: PPC: Book3S HV: add XIVE native exploitation mode Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 01/17] powerpc/xive: add OPAL extensions for the XIVE native exploitation support Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 02/17] KVM: PPC: Book3S HV: add a new KVM device for the XIVE native exploitation mode Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 03/17] KVM: PPC: Book3S HV: XIVE: introduce a new capability KVM_CAP_PPC_IRQ_XIVE Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 04/17] KVM: PPC: Book3S HV: XIVE: add a control to initialize a source Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 05/17] KVM: PPC: Book3S HV: XIVE: add a control to configure " Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 06/17] KVM: PPC: Book3S HV: XIVE: add controls for the EQ configuration Cédric Le Goater
2019-03-20 23:09 ` David Gibson
2019-03-21 8:48 ` Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 07/17] KVM: PPC: Book3S HV: XIVE: add a global reset control Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 08/17] KVM: PPC: Book3S HV: XIVE: add a control to sync the sources Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 09/17] KVM: PPC: Book3S HV: XIVE: add a control to dirty the XIVE EQ pages Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 10/17] KVM: PPC: Book3S HV: XIVE: add get/set accessors for the VP XIVE state Cédric Le Goater
2019-04-09 6:19 ` Paul Mackerras
2019-04-09 9:18 ` Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 11/17] KVM: introduce a 'mmap' method for KVM devices Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 12/17] KVM: PPC: Book3S HV: XIVE: add a TIMA mapping Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 13/17] KVM: PPC: Book3S HV: XIVE: add a mapping for the source ESB pages Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 14/17] KVM: PPC: Book3S HV: XIVE: add passthrough support Cédric Le Goater
2019-03-20 8:37 ` Cédric Le Goater [this message]
2019-03-20 8:37 ` [PATCH v4 16/17] KVM: introduce a KVM_DESTROY_DEVICE ioctl Cédric Le Goater
2019-04-09 14:12 ` Cédric Le Goater
2019-03-20 8:37 ` [PATCH v4 17/17] KVM: PPC: Book3S HV: XIVE: clear the vCPU interrupt presenters Cédric Le Goater
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