From: Eric Auger <eric.auger@linaro.org>
To: eric.auger@st.com, eric.auger@linaro.org,
christoffer.dall@linaro.org, marc.zyngier@arm.com,
linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
alex.williamson@redhat.com, joel.schopp@amd.com,
kim.phillips@freescale.com, paulus@samba.org, gleb@kernel.org,
pbonzini@redhat.com
Cc: linux-kernel@vger.kernel.org, patches@linaro.org,
will.deacon@arm.com, a.motakis@virtualopensystems.com,
a.rigo@virtualopensystems.com, john.liuli@huawei.com
Subject: [RFC v2 7/9] KVM: KVM-VFIO: add new VFIO external API hooks
Date: Mon, 1 Sep 2014 14:52:46 +0200 [thread overview]
Message-ID: <1409575968-5329-8-git-send-email-eric.auger@linaro.org> (raw)
In-Reply-To: <1409575968-5329-1-git-send-email-eric.auger@linaro.org>
add functions that implement the gateway to the extended
external VFIO API:
- kvm_vfio_device_get_external_user
- kvm_vfio_device_put_external_user
- kvm_vfio_external_base_device
Signed-off-by: Eric Auger <eric.auger@linaro.org>
---
v1 -> v2:
- kvm_vfio_external_get_base_device renamed into
kvm_vfio_external_base_device
- kvm_vfio_external_get_type removed
---
arch/arm/include/asm/kvm_host.h | 5 +++++
virt/kvm/vfio.c | 45 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 50 insertions(+)
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index 6dfb404..1aee6bb 100644
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -171,6 +171,11 @@ void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
+struct vfio_device;
+struct vfio_device *kvm_vfio_device_get_external_user(struct file *filep);
+void kvm_vfio_device_put_external_user(struct vfio_device *vdev);
+struct device *kvm_vfio_external_base_device(struct vfio_device *vdev);
+
/* We do not have shadow page tables, hence the empty hooks */
static inline int kvm_age_hva(struct kvm *kvm, unsigned long hva)
{
diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c
index ba1a93f..76dc7a1 100644
--- a/virt/kvm/vfio.c
+++ b/virt/kvm/vfio.c
@@ -59,6 +59,51 @@ static void kvm_vfio_group_put_external_user(struct vfio_group *vfio_group)
symbol_put(vfio_group_put_external_user);
}
+struct vfio_device *kvm_vfio_device_get_external_user(struct file *filep)
+{
+ struct vfio_device *vdev;
+ struct vfio_device *(*fn)(struct file *);
+
+ fn = symbol_get(vfio_device_get_external_user);
+ if (!fn)
+ return ERR_PTR(-EINVAL);
+
+ vdev = fn(filep);
+
+ symbol_put(vfio_device_get_external_user);
+
+ return vdev;
+}
+
+void kvm_vfio_device_put_external_user(struct vfio_device *vdev)
+{
+ void (*fn)(struct vfio_device *);
+
+ fn = symbol_get(vfio_device_put_external_user);
+ if (!fn)
+ return;
+
+ fn(vdev);
+
+ symbol_put(vfio_device_put_external_user);
+}
+
+struct device *kvm_vfio_external_base_device(struct vfio_device *vdev)
+{
+ struct device *(*fn)(struct vfio_device *);
+ struct device *dev;
+
+ fn = symbol_get(vfio_external_base_device);
+ if (!fn)
+ return NULL;
+
+ dev = fn(vdev);
+
+ symbol_put(vfio_external_base_device);
+
+ return dev;
+}
+
static bool kvm_vfio_group_is_coherent(struct vfio_group *vfio_group)
{
long (*fn)(struct vfio_group *, unsigned long);
--
1.9.1
next prev parent reply other threads:[~2014-09-01 12:53 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-01 12:52 [RFC v2 0/9] KVM-VFIO IRQ forward control Eric Auger
2014-09-01 12:52 ` [RFC v2 1/9] KVM: ARM: VGIC: fix multiple injection of level sensitive forwarded IRQ Eric Auger
2014-09-11 3:09 ` Christoffer Dall
2014-09-11 18:17 ` Eric Auger
2014-09-11 22:14 ` Christoffer Dall
2014-09-01 12:52 ` [RFC v2 2/9] KVM: ARM: VGIC: add forwarded irq rbtree lock Eric Auger
2014-09-11 3:09 ` Christoffer Dall
2014-09-11 17:31 ` Eric Auger
2014-09-01 12:52 ` [RFC v2 3/9] ARM: KVM: Enable the KVM-VFIO device Eric Auger
2014-09-01 12:52 ` [RFC v2 4/9] VFIO: platform: handler tests whether the IRQ is forwarded Eric Auger
2014-09-11 3:10 ` Christoffer Dall
2014-09-11 8:44 ` Eric Auger
2014-09-11 17:05 ` Christoffer Dall
2014-09-11 18:07 ` Alex Williamson
2014-09-11 17:08 ` Antonios Motakis
2014-09-01 12:52 ` [RFC v2 5/9] KVM: KVM-VFIO: update user API to program forwarded IRQ Eric Auger
2014-09-11 3:10 ` Christoffer Dall
2014-09-11 8:49 ` Eric Auger
2014-09-11 17:08 ` Christoffer Dall
2014-09-01 12:52 ` [RFC v2 6/9] VFIO: Extend external user API Eric Auger
2014-09-11 3:10 ` Christoffer Dall
2014-09-11 8:50 ` Eric Auger
2014-09-01 12:52 ` Eric Auger [this message]
2014-09-11 3:10 ` [RFC v2 7/9] KVM: KVM-VFIO: add new VFIO external API hooks Christoffer Dall
2014-09-11 8:51 ` Eric Auger
2014-09-01 12:52 ` [RFC v2 8/9] KVM: KVM-VFIO: generic KVM_DEV_VFIO_DEVICE command and IRQ forwarding control Eric Auger
2014-09-11 3:10 ` Christoffer Dall
2014-09-11 5:05 ` Alex Williamson
2014-09-11 12:04 ` Eric Auger
2014-09-11 15:59 ` Alex Williamson
2014-09-11 17:24 ` Christoffer Dall
2014-09-11 17:22 ` Christoffer Dall
2014-09-11 17:10 ` Christoffer Dall
2014-09-11 18:14 ` Alex Williamson
2014-09-11 21:59 ` Christoffer Dall
2014-09-11 9:35 ` Eric Auger
2014-09-11 15:47 ` Alex Williamson
2014-09-11 17:32 ` Christoffer Dall
2014-09-01 12:52 ` [RFC v2 9/9] KVM: KVM-VFIO: ARM " Eric Auger
2014-09-11 3:10 ` Christoffer Dall
2014-09-02 21:05 ` [RFC v2 0/9] KVM-VFIO IRQ forward control Alex Williamson
2014-09-05 12:52 ` Eric Auger
2014-09-11 3:10 ` Christoffer Dall
2014-09-11 5:09 ` Alex Williamson
2014-11-17 11:25 ` Wu, Feng
2014-11-17 13:41 ` Eric Auger
2014-11-17 13:45 ` Wu, Feng
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1409575968-5329-8-git-send-email-eric.auger@linaro.org \
--to=eric.auger@linaro.org \
--cc=a.motakis@virtualopensystems.com \
--cc=a.rigo@virtualopensystems.com \
--cc=alex.williamson@redhat.com \
--cc=christoffer.dall@linaro.org \
--cc=eric.auger@st.com \
--cc=gleb@kernel.org \
--cc=joel.schopp@amd.com \
--cc=john.liuli@huawei.com \
--cc=kim.phillips@freescale.com \
--cc=kvm@vger.kernel.org \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=marc.zyngier@arm.com \
--cc=patches@linaro.org \
--cc=paulus@samba.org \
--cc=pbonzini@redhat.com \
--cc=will.deacon@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).