Displaying 20 results from an estimated 337 matches for "vcdev".
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2019 Jun 06
0
[PATCH v4 7/8] virtio/s390: use DMA memory for ccw I/O and classic notifiers
...irtio/virtio_ccw.c
index e96a8cc56ec2..e5e10aa54aa1 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -46,9 +46,15 @@ struct vq_config_block {
#define VIRTIO_CCW_CONFIG_SIZE 0x100
/* same as PCI config space size, should be enough for all drivers */
+struct vcdev_dma_area {
+ unsigned long indicators;
+ unsigned long indicators2;
+ struct vq_config_block config_block;
+ __u8 status;
+};
+
struct virtio_ccw_device {
struct virtio_device vdev;
- __u8 *status;
__u8 config[VIRTIO_CCW_CONFIG_SIZE];
struct ccw_device *cdev;
__u32 curr_io;
@@ -58,24 +64,2...
2019 Jun 12
0
[PATCH v5 7/8] virtio/s390: use DMA memory for ccw I/O and classic notifiers
...irtio/virtio_ccw.c
index e96a8cc56ec2..800252955a2f 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -46,9 +46,15 @@ struct vq_config_block {
#define VIRTIO_CCW_CONFIG_SIZE 0x100
/* same as PCI config space size, should be enough for all drivers */
+struct vcdev_dma_area {
+ unsigned long indicators;
+ unsigned long indicators2;
+ struct vq_config_block config_block;
+ __u8 status;
+};
+
struct virtio_ccw_device {
struct virtio_device vdev;
- __u8 *status;
__u8 config[VIRTIO_CCW_CONFIG_SIZE];
struct ccw_device *cdev;
__u32 curr_io;
@@ -58,24 +64,2...
2019 Apr 26
0
[PATCH 09/10] virtio/s390: use DMA memory for ccw I/O and classic notifiers
...irtio/virtio_ccw.c
index 1f3e7d56924f..613b18001a0c 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -46,9 +46,15 @@ struct vq_config_block {
#define VIRTIO_CCW_CONFIG_SIZE 0x100
/* same as PCI config space size, should be enough for all drivers */
+struct vcdev_dma_area {
+ unsigned long indicators;
+ unsigned long indicators2;
+ struct vq_config_block config_block;
+ __u8 status;
+};
+
struct virtio_ccw_device {
struct virtio_device vdev;
- __u8 *status;
__u8 config[VIRTIO_CCW_CONFIG_SIZE];
struct ccw_device *cdev;
__u32 curr_io;
@@ -58,24 +64,2...
2019 May 23
0
[PATCH v2 7/8] virtio/s390: use DMA memory for ccw I/O and classic notifiers
...irtio/virtio_ccw.c
index e96a8cc56ec2..03c9f7001fb1 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -46,9 +46,15 @@ struct vq_config_block {
#define VIRTIO_CCW_CONFIG_SIZE 0x100
/* same as PCI config space size, should be enough for all drivers */
+struct vcdev_dma_area {
+ unsigned long indicators;
+ unsigned long indicators2;
+ struct vq_config_block config_block;
+ __u8 status;
+};
+
struct virtio_ccw_device {
struct virtio_device vdev;
- __u8 *status;
__u8 config[VIRTIO_CCW_CONFIG_SIZE];
struct ccw_device *cdev;
__u32 curr_io;
@@ -58,24 +64,2...
2019 May 29
0
[PATCH v3 7/8] virtio/s390: use DMA memory for ccw I/O and classic notifiers
...irtio/virtio_ccw.c
index e96a8cc56ec2..03c9f7001fb1 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -46,9 +46,15 @@ struct vq_config_block {
#define VIRTIO_CCW_CONFIG_SIZE 0x100
/* same as PCI config space size, should be enough for all drivers */
+struct vcdev_dma_area {
+ unsigned long indicators;
+ unsigned long indicators2;
+ struct vq_config_block config_block;
+ __u8 status;
+};
+
struct virtio_ccw_device {
struct virtio_device vdev;
- __u8 *status;
__u8 config[VIRTIO_CCW_CONFIG_SIZE];
struct ccw_device *cdev;
__u32 curr_io;
@@ -58,24 +64,2...
2019 Apr 26
0
[PATCH 08/10] virtio/s390: add indirection to indicators access
...io_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index bb7a92316fc8..1f3e7d56924f 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -68,6 +68,16 @@ struct virtio_ccw_device {
void *airq_info;
};
+static inline unsigned long *indicators(struct virtio_ccw_device *vcdev)
+{
+ return &vcdev->indicators;
+}
+
+static inline unsigned long *indicators2(struct virtio_ccw_device *vcdev)
+{
+ return &vcdev->indicators2;
+}
+
struct vq_info_block_legacy {
__u64 queue;
__u32 align;
@@ -337,17 +347,17 @@ static void virtio_ccw_drop_indicator(struct virtio...
2019 May 23
0
[PATCH v2 6/8] virtio/s390: add indirection to indicators access
...io_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index 1da7430f94c8..e96a8cc56ec2 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -68,6 +68,16 @@ struct virtio_ccw_device {
void *airq_info;
};
+static inline unsigned long *indicators(struct virtio_ccw_device *vcdev)
+{
+ return &vcdev->indicators;
+}
+
+static inline unsigned long *indicators2(struct virtio_ccw_device *vcdev)
+{
+ return &vcdev->indicators2;
+}
+
struct vq_info_block_legacy {
__u64 queue;
__u32 align;
@@ -338,17 +348,17 @@ static void virtio_ccw_drop_indicator(struct virtio...
2019 Jun 12
0
[PATCH v5 6/8] virtio/s390: add indirection to indicators access
...io_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index 1da7430f94c8..e96a8cc56ec2 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -68,6 +68,16 @@ struct virtio_ccw_device {
void *airq_info;
};
+static inline unsigned long *indicators(struct virtio_ccw_device *vcdev)
+{
+ return &vcdev->indicators;
+}
+
+static inline unsigned long *indicators2(struct virtio_ccw_device *vcdev)
+{
+ return &vcdev->indicators2;
+}
+
struct vq_info_block_legacy {
__u64 queue;
__u32 align;
@@ -338,17 +348,17 @@ static void virtio_ccw_drop_indicator(struct virtio...
2019 May 29
0
[PATCH v3 6/8] virtio/s390: add indirection to indicators access
...io_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index 1da7430f94c8..e96a8cc56ec2 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -68,6 +68,16 @@ struct virtio_ccw_device {
void *airq_info;
};
+static inline unsigned long *indicators(struct virtio_ccw_device *vcdev)
+{
+ return &vcdev->indicators;
+}
+
+static inline unsigned long *indicators2(struct virtio_ccw_device *vcdev)
+{
+ return &vcdev->indicators2;
+}
+
struct vq_info_block_legacy {
__u64 queue;
__u32 align;
@@ -338,17 +348,17 @@ static void virtio_ccw_drop_indicator(struct virtio...
2019 May 08
2
[PATCH 08/10] virtio/s390: add indirection to indicators access
...> index bb7a92316fc8..1f3e7d56924f 100644
> --- a/drivers/s390/virtio/virtio_ccw.c
> +++ b/drivers/s390/virtio/virtio_ccw.c
> @@ -68,6 +68,16 @@ struct virtio_ccw_device {
> void *airq_info;
> };
>
> +static inline unsigned long *indicators(struct virtio_ccw_device *vcdev)
> +{
> + return &vcdev->indicators;
> +}
> +
> +static inline unsigned long *indicators2(struct virtio_ccw_device *vcdev)
> +{
> + return &vcdev->indicators2;
> +}
> +
> struct vq_info_block_legacy {
> __u64 queue;
> __u32 align;
> @@ -3...
2019 May 08
2
[PATCH 08/10] virtio/s390: add indirection to indicators access
...> index bb7a92316fc8..1f3e7d56924f 100644
> --- a/drivers/s390/virtio/virtio_ccw.c
> +++ b/drivers/s390/virtio/virtio_ccw.c
> @@ -68,6 +68,16 @@ struct virtio_ccw_device {
> void *airq_info;
> };
>
> +static inline unsigned long *indicators(struct virtio_ccw_device *vcdev)
> +{
> + return &vcdev->indicators;
> +}
> +
> +static inline unsigned long *indicators2(struct virtio_ccw_device *vcdev)
> +{
> + return &vcdev->indicators2;
> +}
> +
> struct vq_info_block_legacy {
> __u64 queue;
> __u32 align;
> @@ -3...
2013 Dec 13
0
[PATCH v4 RFC 1/3] virtio_ccw: fix vcdev pointer handling issues
The interrupt handler virtio_ccw_int_handler() using the vcdev pointer
is protected by the ccw_device lock. Resetting the pointer within the
ccw_device structure should be done when holding this lock.
Also resetting the vcdev pointer (under the ccw_device lock) prior to
freeing the vcdev pointer memory removes a critical path.
Signed-off-by: Heinz Graalfs &l...
2023 Mar 05
0
[PATCH AUTOSEL 6.2 05/16] s390/virtio: sort out physical vs virtual pointers usage
...deletions(-)
diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index a10dbe632ef9b..954fc31b4bc74 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -363,7 +363,7 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
thinint_area->isc = VIRTIO_AIRQ_ISC;
ccw->cmd_code = CCW_CMD_SET_IND_ADAPTER;
ccw->count = sizeof(*thinint_area);
- ccw->cda = (__u32)(unsigned long) thinint_area;
+ ccw->cda = (__u32)virt_to_phys(thinint_area);
} else {
/* payload is the address of the indicators */...
2023 Mar 05
0
[PATCH AUTOSEL 6.1 05/15] s390/virtio: sort out physical vs virtual pointers usage
...deletions(-)
diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index a10dbe632ef9b..954fc31b4bc74 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -363,7 +363,7 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev,
thinint_area->isc = VIRTIO_AIRQ_ISC;
ccw->cmd_code = CCW_CMD_SET_IND_ADAPTER;
ccw->count = sizeof(*thinint_area);
- ccw->cda = (__u32)(unsigned long) thinint_area;
+ ccw->cda = (__u32)virt_to_phys(thinint_area);
} else {
/* payload is the address of the indicators */...
2013 Jun 07
2
[PATCH RFC 0/2] KVM: s390: virtio-ccw adapter interrupts.
Hi,
here's the guest driver support for adapter interrupts in virtio-ccw.
We use one summary indicator per page of indicators. For each device,
we try to find a space in an indicator where all of its virtqueues fit.
Locking probably needs some more love, but it seems to work fine so far.
Cornelia Huck (2):
KVM: s390: virtio-ccw: Handle command rejects.
KVM: s390: virtio-ccw adapter
2013 Jun 07
2
[PATCH RFC 0/2] KVM: s390: virtio-ccw adapter interrupts.
Hi,
here's the guest driver support for adapter interrupts in virtio-ccw.
We use one summary indicator per page of indicators. For each device,
we try to find a space in an indicator where all of its virtqueues fit.
Locking probably needs some more love, but it seems to work fine so far.
Cornelia Huck (2):
KVM: s390: virtio-ccw: Handle command rejects.
KVM: s390: virtio-ccw adapter
2013 Jul 09
3
[RFC PATCH v2 0/2] KVM: s390: virtio-ccw adapter interrupts.
Hi,
next version of the guest exploitation of virtio-ccw adapter interrupts.
Changes from the last version:
- adapt to latest kvm-next
- changed housekeeping for indicator locations: we now use cacheline-sized
and aligned areas
- minor tweaks
Cornelia Huck (2):
KVM: s390: virtio-ccw: Handle command rejects.
KVM: s390: virtio-ccw adapter interrupt support.
arch/s390/include/asm/irq.h
2013 Jul 09
3
[RFC PATCH v2 0/2] KVM: s390: virtio-ccw adapter interrupts.
Hi,
next version of the guest exploitation of virtio-ccw adapter interrupts.
Changes from the last version:
- adapt to latest kvm-next
- changed housekeeping for indicator locations: we now use cacheline-sized
and aligned areas
- minor tweaks
Cornelia Huck (2):
KVM: s390: virtio-ccw: Handle command rejects.
KVM: s390: virtio-ccw adapter interrupt support.
arch/s390/include/asm/irq.h
2019 Jun 12
21
[PATCH v5 0/8] s390: virtio: support protected virtualization
Enhanced virtualization protection technology may require the use of
bounce buffers for I/O. While support for this was built into the virtio
core, virtio-ccw wasn't changed accordingly.
Some background on technology (not part of this series) and the
terminology used.
* Protected Virtualization (PV):
Protected Virtualization guarantees, that non-shared memory of a guest
that operates in PV
2019 Jun 12
21
[PATCH v5 0/8] s390: virtio: support protected virtualization
Enhanced virtualization protection technology may require the use of
bounce buffers for I/O. While support for this was built into the virtio
core, virtio-ccw wasn't changed accordingly.
Some background on technology (not part of this series) and the
terminology used.
* Protected Virtualization (PV):
Protected Virtualization guarantees, that non-shared memory of a guest
that operates in PV