From: Maxim Levitsky <mlevitsk@redhat.com>
To: linux-nvme@lists.infradead.org
Cc: Maxim Levitsky <mlevitsk@redhat.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Jens Axboe <axboe@fb.com>,
Alex Williamson <alex.williamson@redhat.com>,
Keith Busch <keith.busch@intel.com>,
Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>,
Kirti Wankhede <kwankhede@nvidia.com>,
"David S . Miller" <davem@davemloft.net>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Wolfram Sang <wsa@the-dreams.de>,
Nicolas Ferre <nicolas.ferre@microchip.com>,
"Paul E . McKenney " <paulmck@linux.ibm.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Liang Cunming <cunming.liang@intel.com>,
Liu Changpeng <changpeng.liu@intel.com>,
Fam Zheng <fam@euphon.net>, Amnon Ilan <ailan@redhat.com>,
John Ferlan <jferlan@redhat.com>
Subject: [PATCH v2 02/10] vfio/mdev: add .request callback
Date: Thu, 2 May 2019 14:47:53 +0300 [thread overview]
Message-ID: <20190502114801.23116-3-mlevitsk@redhat.com> (raw)
In-Reply-To: <20190502114801.23116-1-mlevitsk@redhat.com>
This will allow the hotplug to be enabled for mediated devices
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
---
drivers/vfio/mdev/vfio_mdev.c | 11 +++++++++++
include/linux/mdev.h | 4 ++++
2 files changed, 15 insertions(+)
diff --git a/drivers/vfio/mdev/vfio_mdev.c b/drivers/vfio/mdev/vfio_mdev.c
index d230620fe02d..17aa76de0764 100644
--- a/drivers/vfio/mdev/vfio_mdev.c
+++ b/drivers/vfio/mdev/vfio_mdev.c
@@ -101,6 +101,16 @@ static int vfio_mdev_mmap(void *device_data, struct vm_area_struct *vma)
return parent->ops->mmap(mdev, vma);
}
+static void vfio_mdev_request(void *device_data, unsigned int count)
+{
+ struct mdev_device *mdev = device_data;
+ struct mdev_parent *parent = mdev->parent;
+
+ if (unlikely(!parent->ops->request))
+ return;
+ parent->ops->request(mdev, count);
+}
+
static const struct vfio_device_ops vfio_mdev_dev_ops = {
.name = "vfio-mdev",
.open = vfio_mdev_open,
@@ -109,6 +119,7 @@ static const struct vfio_device_ops vfio_mdev_dev_ops = {
.read = vfio_mdev_read,
.write = vfio_mdev_write,
.mmap = vfio_mdev_mmap,
+ .request = vfio_mdev_request,
};
static int vfio_mdev_probe(struct device *dev)
diff --git a/include/linux/mdev.h b/include/linux/mdev.h
index d7aee90e5da5..6f315cb9575c 100644
--- a/include/linux/mdev.h
+++ b/include/linux/mdev.h
@@ -13,6 +13,9 @@
#ifndef MDEV_H
#define MDEV_H
+#include <linux/uuid.h>
+#include <linux/device.h>
+
struct mdev_device;
/**
@@ -81,6 +84,7 @@ struct mdev_parent_ops {
long (*ioctl)(struct mdev_device *mdev, unsigned int cmd,
unsigned long arg);
int (*mmap)(struct mdev_device *mdev, struct vm_area_struct *vma);
+ void (*request)(struct mdev_device *mdev, unsigned int count);
};
/* interface for exporting mdev supported type attributes */
--
2.17.2
next prev parent reply other threads:[~2019-05-02 11:48 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-02 11:47 [PATCH v2 00/10] RFC: NVME MDEV Maxim Levitsky
2019-05-02 11:47 ` [PATCH v2 01/10] vfio/mdev: add notifier for map events Maxim Levitsky
2019-05-02 11:47 ` Maxim Levitsky [this message]
2019-05-02 11:47 ` [PATCH v2 03/10] nvme/core: add some more values from the spec Maxim Levitsky
2019-05-02 11:47 ` [PATCH v2 04/10] nvme/core: add NVME_CTRL_SUSPENDED controller state Maxim Levitsky
2019-05-02 11:47 ` [PATCH v2 05/10] nvme/pci: use the NVME_CTRL_SUSPENDED state Maxim Levitsky
2019-05-02 11:47 ` [PATCH v2 06/10] nvme/core: add mdev interfaces Maxim Levitsky
2019-05-03 12:29 ` Christoph Hellwig
2019-05-03 19:00 ` Max Gurtovoy
2019-05-04 6:49 ` Christoph Hellwig
2019-05-06 8:31 ` Maxim Levitsky
2019-05-06 8:34 ` Maxim Levitsky
2019-05-06 12:59 ` Christoph Hellwig
2019-05-02 11:47 ` [PATCH v2 07/10] nvme/core: add nvme-mdev core driver Maxim Levitsky
2019-05-02 11:47 ` [PATCH v2 08/10] nvme/pci: implement the mdev external queue allocation interface Maxim Levitsky
2019-05-02 14:20 ` Maxim Levitsky
2019-05-02 21:12 ` Heitke, Kenneth
2019-05-02 21:20 ` Maxim Levitsky
2019-05-03 12:09 ` Keith Busch
2019-05-06 7:55 ` Maxim Levitsky
2019-05-02 11:48 ` [PATCH v2 09/10] nvme/mdev - Add inline performance measurments Maxim Levitsky
2019-05-02 11:48 ` [PATCH v2 10/10] nvme/mdev - generic block IO code Maxim Levitsky
2019-05-03 12:18 ` [PATCH v2 00/10] RFC: NVME MDEV Christoph Hellwig
2019-05-06 9:04 ` Maxim Levitsky
2019-05-06 12:57 ` Christoph Hellwig
2019-05-06 16:43 ` Keith Busch
2019-05-08 12:39 ` Paolo Bonzini
2019-05-09 9:12 ` Stefan Hajnoczi
2019-05-09 13:49 ` Keith Busch
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