From: Matthew Rosato <mjrosato@linux.ibm.com>
To: linux-s390@vger.kernel.org
Cc: alex.williamson@redhat.com, cohuck@redhat.com,
schnelle@linux.ibm.com, farman@linux.ibm.com,
pmorel@linux.ibm.com, borntraeger@linux.ibm.com,
hca@linux.ibm.com, gor@linux.ibm.com,
gerald.schaefer@linux.ibm.com, agordeev@linux.ibm.com,
frankja@linux.ibm.com, david@redhat.com, imbrenda@linux.ibm.com,
vneethv@linux.ibm.com, oberpar@linux.ibm.com,
freude@linux.ibm.com, thuth@redhat.com, pasic@linux.ibm.com,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 15/30] KVM: s390: pci: add basic kvm_zdev structure
Date: Fri, 4 Feb 2022 16:15:21 -0500 [thread overview]
Message-ID: <20220204211536.321475-16-mjrosato@linux.ibm.com> (raw)
In-Reply-To: <20220204211536.321475-1-mjrosato@linux.ibm.com>
This structure will be used to carry kvm passthrough information related to
zPCI devices.
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
---
arch/s390/include/asm/kvm_pci.h | 27 +++++++++++++++++++++++
arch/s390/include/asm/pci.h | 3 +++
arch/s390/kvm/Makefile | 1 +
arch/s390/kvm/pci.c | 38 +++++++++++++++++++++++++++++++++
4 files changed, 69 insertions(+)
create mode 100644 arch/s390/include/asm/kvm_pci.h
create mode 100644 arch/s390/kvm/pci.c
diff --git a/arch/s390/include/asm/kvm_pci.h b/arch/s390/include/asm/kvm_pci.h
new file mode 100644
index 000000000000..ef10f9e46e37
--- /dev/null
+++ b/arch/s390/include/asm/kvm_pci.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * KVM PCI Passthrough for virtual machines on s390
+ *
+ * Copyright IBM Corp. 2021
+ *
+ * Author(s): Matthew Rosato <mjrosato@linux.ibm.com>
+ */
+
+#ifndef ASM_KVM_PCI_H
+#define ASM_KVM_PCI_H
+
+#include <linux/types.h>
+#include <linux/kvm_types.h>
+#include <linux/kvm_host.h>
+#include <linux/kvm.h>
+#include <linux/pci.h>
+
+struct kvm_zdev {
+ struct zpci_dev *zdev;
+ struct kvm *kvm;
+};
+
+int kvm_s390_pci_dev_open(struct zpci_dev *zdev);
+void kvm_s390_pci_dev_release(struct zpci_dev *zdev);
+
+#endif /* ASM_KVM_PCI_H */
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index e8a3fd5bc169..4faff673078b 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -97,6 +97,7 @@ struct zpci_bar_struct {
};
struct s390_domain;
+struct kvm_zdev;
#define ZPCI_FUNCTIONS_PER_BUS 256
struct zpci_bus {
@@ -190,6 +191,8 @@ struct zpci_dev {
struct dentry *debugfs_dev;
struct s390_domain *s390_domain; /* s390 IOMMU domain data */
+
+ struct kvm_zdev *kzdev; /* passthrough data */
};
static inline bool zdev_enabled(struct zpci_dev *zdev)
diff --git a/arch/s390/kvm/Makefile b/arch/s390/kvm/Makefile
index 26f4a74e5ce4..b8263a160df8 100644
--- a/arch/s390/kvm/Makefile
+++ b/arch/s390/kvm/Makefile
@@ -10,4 +10,5 @@ ccflags-y := -Ivirt/kvm -Iarch/s390/kvm
kvm-y += kvm-s390.o intercept.o interrupt.o priv.o sigp.o
kvm-y += diag.o gaccess.o guestdbg.o vsie.o pv.o
+kvm-$(CONFIG_VFIO_PCI_ZDEV) += pci.o
obj-$(CONFIG_KVM) += kvm.o
diff --git a/arch/s390/kvm/pci.c b/arch/s390/kvm/pci.c
new file mode 100644
index 000000000000..bc1b7a564e55
--- /dev/null
+++ b/arch/s390/kvm/pci.c
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * s390 kvm PCI passthrough support
+ *
+ * Copyright IBM Corp. 2021
+ *
+ * Author(s): Matthew Rosato <mjrosato@linux.ibm.com>
+ */
+
+#include <linux/kvm_host.h>
+#include <linux/pci.h>
+#include <asm/kvm_pci.h>
+
+int kvm_s390_pci_dev_open(struct zpci_dev *zdev)
+{
+ struct kvm_zdev *kzdev;
+
+ kzdev = kzalloc(sizeof(struct kvm_zdev), GFP_KERNEL);
+ if (!kzdev)
+ return -ENOMEM;
+
+ kzdev->zdev = zdev;
+ zdev->kzdev = kzdev;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(kvm_s390_pci_dev_open);
+
+void kvm_s390_pci_dev_release(struct zpci_dev *zdev)
+{
+ struct kvm_zdev *kzdev;
+
+ kzdev = zdev->kzdev;
+ WARN_ON(kzdev->zdev != zdev);
+ zdev->kzdev = 0;
+ kfree(kzdev);
+}
+EXPORT_SYMBOL_GPL(kvm_s390_pci_dev_release);
--
2.27.0
next prev parent reply other threads:[~2022-02-04 21:16 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-04 21:15 [PATCH v3 00/30] KVM: s390: enable zPCI for interpretive execution Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 01/30] s390/sclp: detect the zPCI load/store interpretation facility Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 02/30] s390/sclp: detect the AISII facility Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 03/30] s390/sclp: detect the AENI facility Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 04/30] s390/sclp: detect the AISI facility Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 05/30] s390/airq: pass more TPI info to airq handlers Matthew Rosato
2022-02-07 8:28 ` Cornelia Huck
2022-02-04 21:15 ` [PATCH v3 06/30] s390/airq: allow for airq structure that uses an input vector Matthew Rosato
2022-02-07 8:29 ` Cornelia Huck
2022-02-07 8:42 ` Claudio Imbrenda
2022-02-04 21:15 ` [PATCH v3 07/30] s390/pci: externalize the SIC operation controls and routine Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 08/30] s390/pci: stash associated GISA designation Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 09/30] s390/pci: export some routines related to RPCIT processing Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 10/30] s390/pci: stash dtsm and maxstbl Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 11/30] s390/pci: add helper function to find device by handle Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 12/30] s390/pci: get SHM information from list pci Matthew Rosato
2022-02-07 10:08 ` Pierre Morel
2022-02-04 21:15 ` [PATCH v3 13/30] s390/pci: return status from zpci_refresh_trans Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 14/30] vfio/pci: re-introduce CONFIG_VFIO_PCI_ZDEV Matthew Rosato
2022-02-07 8:35 ` Cornelia Huck
2022-02-07 15:43 ` Matthew Rosato
2022-02-07 17:59 ` Cornelia Huck
2022-02-07 20:09 ` Matthew Rosato
2022-02-10 10:07 ` Cornelia Huck
2022-02-04 21:15 ` Matthew Rosato [this message]
2022-02-04 21:15 ` [PATCH v3 16/30] KVM: s390: pci: do initial setup for AEN interpretation Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 17/30] KVM: s390: pci: enable host forwarding of Adapter Event Notifications Matthew Rosato
2022-02-14 12:59 ` Pierre Morel
2022-02-14 20:35 ` Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 18/30] KVM: s390: mechanism to enable guest zPCI Interpretation Matthew Rosato
2022-02-14 13:06 ` Pierre Morel
2022-02-04 21:15 ` [PATCH v3 19/30] KVM: s390: pci: provide routines for enabling/disabling interpretation Matthew Rosato
2022-02-14 13:22 ` Pierre Morel
2022-02-04 21:15 ` [PATCH v3 20/30] KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 21/30] KVM: s390: pci: provide routines for enabling/disabling IOAT assist Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 22/30] KVM: s390: pci: handle refresh of PCI translations Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 23/30] KVM: s390: intercept the rpcit instruction Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 24/30] vfio-pci/zdev: wire up group notifier Matthew Rosato
2022-02-08 17:43 ` Alex Williamson
2022-02-08 18:51 ` Jason Gunthorpe
2022-02-08 19:26 ` Alex Williamson
2022-02-08 19:51 ` Jason Gunthorpe
2022-02-08 20:33 ` Matthew Rosato
2022-02-08 20:40 ` Jason Gunthorpe
2022-02-08 21:37 ` Matthew Rosato
2022-02-10 11:15 ` Niklas Schnelle
2022-02-10 13:01 ` Jason Gunthorpe
2022-02-10 14:06 ` Niklas Schnelle
2022-02-10 15:23 ` Jason Gunthorpe
2022-02-10 18:59 ` Matthew Rosato
2022-02-10 23:45 ` Jason Gunthorpe
2022-02-04 21:15 ` [PATCH v3 25/30] vfio-pci/zdev: wire up zPCI interpretive execution support Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 26/30] vfio-pci/zdev: wire up zPCI adapter interrupt forwarding support Matthew Rosato
2022-02-07 16:38 ` Pierre Morel
2022-02-04 21:15 ` [PATCH v3 27/30] vfio-pci/zdev: wire up zPCI IOAT assist support Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 28/30] vfio-pci/zdev: add DTSM to clp group capability Matthew Rosato
2022-02-04 21:15 ` [PATCH v3 29/30] KVM: s390: introduce CPU feature for zPCI Interpretation Matthew Rosato
2022-02-07 16:36 ` Pierre Morel
2022-02-04 21:15 ` [PATCH v3 30/30] MAINTAINERS: additional files related kvm s390 pci passthrough Matthew Rosato
2022-02-07 13:04 ` Christian Borntraeger
2022-02-07 15:44 ` Matthew Rosato
2022-02-04 21:33 ` [PATCH v3 00/30] KVM: s390: enable zPCI for interpretive execution Matthew Rosato
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