From: Halil Pasic <pasic@linux.ibm.com> To: kvm@vger.kernel.org, linux-s390@vger.kernel.org, Cornelia Huck <cohuck@redhat.com>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Sebastian Ott <sebott@linux.ibm.com> Cc: Halil Pasic <pasic@linux.ibm.com>, virtualization@lists.linux-foundation.org, "Michael S. Tsirkin" <mst@redhat.com>, Christoph Hellwig <hch@infradead.org>, Thomas Huth <thuth@redhat.com>, Christian Borntraeger <borntraeger@de.ibm.com>, Viktor Mihajlovski <mihajlov@linux.ibm.com>, Vasily Gorbik <gor@linux.ibm.com>, Janosch Frank <frankja@linux.ibm.com>, Claudio Imbrenda <imbrenda@linux.ibm.com>, Farhan Ali <alifm@linux.ibm.com>, Eric Farman <farman@linux.ibm.com> Subject: [PATCH 08/10] virtio/s390: add indirection to indicators access Date: Fri, 26 Apr 2019 20:32:43 +0200 [thread overview] Message-ID: <20190426183245.37939-9-pasic@linux.ibm.com> (raw) In-Reply-To: <20190426183245.37939-1-pasic@linux.ibm.com> This will come in handy soon when we pull out the indicators from virtio_ccw_device to a memory area that is shared with the hypervisor (in particular for protected virtualization guests). Signed-off-by: Halil Pasic <pasic@linux.ibm.com> --- drivers/s390/virtio/virtio_ccw.c | 40 +++++++++++++++++++++++++--------------- 1 file changed, 25 insertions(+), 15 deletions(-) diff --git a/drivers/s390/virtio/virtio_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_ccw_device *vcdev, ccw->cda = (__u32)(unsigned long) thinint_area; } else { /* payload is the address of the indicators */ - indicatorp = kmalloc(sizeof(&vcdev->indicators), + indicatorp = kmalloc(sizeof(indicators(vcdev)), GFP_DMA | GFP_KERNEL); if (!indicatorp) return; *indicatorp = 0; ccw->cmd_code = CCW_CMD_SET_IND; - ccw->count = sizeof(&vcdev->indicators); + ccw->count = sizeof(indicators(vcdev)); ccw->cda = (__u32)(unsigned long) indicatorp; } /* Deregister indicators from host. */ - vcdev->indicators = 0; + *indicators(vcdev) = 0; ccw->flags = 0; ret = ccw_io_helper(vcdev, ccw, vcdev->is_thinint ? @@ -656,10 +666,10 @@ static int virtio_ccw_find_vqs(struct virtio_device *vdev, unsigned nvqs, * We need a data area under 2G to communicate. Our payload is * the address of the indicators. */ - indicatorp = kmalloc(sizeof(&vcdev->indicators), GFP_DMA | GFP_KERNEL); + indicatorp = kmalloc(sizeof(indicators(vcdev)), GFP_DMA | GFP_KERNEL); if (!indicatorp) goto out; - *indicatorp = (unsigned long) &vcdev->indicators; + *indicatorp = (unsigned long) indicators(vcdev); if (vcdev->is_thinint) { ret = virtio_ccw_register_adapter_ind(vcdev, vqs, nvqs, ccw); if (ret) @@ -668,21 +678,21 @@ static int virtio_ccw_find_vqs(struct virtio_device *vdev, unsigned nvqs, } if (!vcdev->is_thinint) { /* Register queue indicators with host. */ - vcdev->indicators = 0; + *indicators(vcdev) = 0; ccw->cmd_code = CCW_CMD_SET_IND; ccw->flags = 0; - ccw->count = sizeof(&vcdev->indicators); + ccw->count = sizeof(indicators(vcdev)); ccw->cda = (__u32)(unsigned long) indicatorp; ret = ccw_io_helper(vcdev, ccw, VIRTIO_CCW_DOING_SET_IND); if (ret) goto out; } /* Register indicators2 with host for config changes */ - *indicatorp = (unsigned long) &vcdev->indicators2; - vcdev->indicators2 = 0; + *indicatorp = (unsigned long) indicators2(vcdev); + *indicators2(vcdev) = 0; ccw->cmd_code = CCW_CMD_SET_CONF_IND; ccw->flags = 0; - ccw->count = sizeof(&vcdev->indicators2); + ccw->count = sizeof(indicators2(vcdev)); ccw->cda = (__u32)(unsigned long) indicatorp; ret = ccw_io_helper(vcdev, ccw, VIRTIO_CCW_DOING_SET_CONF_IND); if (ret) @@ -1092,17 +1102,17 @@ static void virtio_ccw_int_handler(struct ccw_device *cdev, vcdev->err = -EIO; } virtio_ccw_check_activity(vcdev, activity); - for_each_set_bit(i, &vcdev->indicators, - sizeof(vcdev->indicators) * BITS_PER_BYTE) { + for_each_set_bit(i, indicators(vcdev), + sizeof(*indicators(vcdev)) * BITS_PER_BYTE) { /* The bit clear must happen before the vring kick. */ - clear_bit(i, &vcdev->indicators); + clear_bit(i, indicators(vcdev)); barrier(); vq = virtio_ccw_vq_by_ind(vcdev, i); vring_interrupt(0, vq); } - if (test_bit(0, &vcdev->indicators2)) { + if (test_bit(0, indicators2(vcdev))) { virtio_config_changed(&vcdev->vdev); - clear_bit(0, &vcdev->indicators2); + clear_bit(0, indicators2(vcdev)); } } -- 2.16.4
WARNING: multiple messages have this Message-ID (diff)
From: Halil Pasic <pasic@linux.ibm.com> To: kvm@vger.kernel.org, linux-s390@vger.kernel.org, Cornelia Huck <cohuck@redhat.com>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Sebastian Ott <sebott@linux.ibm.com> Cc: Christoph Hellwig <hch@infradead.org>, Thomas Huth <thuth@redhat.com>, Claudio Imbrenda <imbrenda@linux.ibm.com>, Janosch Frank <frankja@linux.ibm.com>, Vasily Gorbik <gor@linux.ibm.com>, "Michael S. Tsirkin" <mst@redhat.com>, Farhan Ali <alifm@linux.ibm.com>, Eric Farman <farman@linux.ibm.com>, virtualization@lists.linux-foundation.org, Halil Pasic <pasic@linux.ibm.com>, Viktor Mihajlovski <mihajlov@linux.ibm.com> Subject: [PATCH 08/10] virtio/s390: add indirection to indicators access Date: Fri, 26 Apr 2019 20:32:43 +0200 [thread overview] Message-ID: <20190426183245.37939-9-pasic@linux.ibm.com> (raw) In-Reply-To: <20190426183245.37939-1-pasic@linux.ibm.com> This will come in handy soon when we pull out the indicators from virtio_ccw_device to a memory area that is shared with the hypervisor (in particular for protected virtualization guests). Signed-off-by: Halil Pasic <pasic@linux.ibm.com> --- drivers/s390/virtio/virtio_ccw.c | 40 +++++++++++++++++++++++++--------------- 1 file changed, 25 insertions(+), 15 deletions(-) diff --git a/drivers/s390/virtio/virtio_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_ccw_device *vcdev, ccw->cda = (__u32)(unsigned long) thinint_area; } else { /* payload is the address of the indicators */ - indicatorp = kmalloc(sizeof(&vcdev->indicators), + indicatorp = kmalloc(sizeof(indicators(vcdev)), GFP_DMA | GFP_KERNEL); if (!indicatorp) return; *indicatorp = 0; ccw->cmd_code = CCW_CMD_SET_IND; - ccw->count = sizeof(&vcdev->indicators); + ccw->count = sizeof(indicators(vcdev)); ccw->cda = (__u32)(unsigned long) indicatorp; } /* Deregister indicators from host. */ - vcdev->indicators = 0; + *indicators(vcdev) = 0; ccw->flags = 0; ret = ccw_io_helper(vcdev, ccw, vcdev->is_thinint ? @@ -656,10 +666,10 @@ static int virtio_ccw_find_vqs(struct virtio_device *vdev, unsigned nvqs, * We need a data area under 2G to communicate. Our payload is * the address of the indicators. */ - indicatorp = kmalloc(sizeof(&vcdev->indicators), GFP_DMA | GFP_KERNEL); + indicatorp = kmalloc(sizeof(indicators(vcdev)), GFP_DMA | GFP_KERNEL); if (!indicatorp) goto out; - *indicatorp = (unsigned long) &vcdev->indicators; + *indicatorp = (unsigned long) indicators(vcdev); if (vcdev->is_thinint) { ret = virtio_ccw_register_adapter_ind(vcdev, vqs, nvqs, ccw); if (ret) @@ -668,21 +678,21 @@ static int virtio_ccw_find_vqs(struct virtio_device *vdev, unsigned nvqs, } if (!vcdev->is_thinint) { /* Register queue indicators with host. */ - vcdev->indicators = 0; + *indicators(vcdev) = 0; ccw->cmd_code = CCW_CMD_SET_IND; ccw->flags = 0; - ccw->count = sizeof(&vcdev->indicators); + ccw->count = sizeof(indicators(vcdev)); ccw->cda = (__u32)(unsigned long) indicatorp; ret = ccw_io_helper(vcdev, ccw, VIRTIO_CCW_DOING_SET_IND); if (ret) goto out; } /* Register indicators2 with host for config changes */ - *indicatorp = (unsigned long) &vcdev->indicators2; - vcdev->indicators2 = 0; + *indicatorp = (unsigned long) indicators2(vcdev); + *indicators2(vcdev) = 0; ccw->cmd_code = CCW_CMD_SET_CONF_IND; ccw->flags = 0; - ccw->count = sizeof(&vcdev->indicators2); + ccw->count = sizeof(indicators2(vcdev)); ccw->cda = (__u32)(unsigned long) indicatorp; ret = ccw_io_helper(vcdev, ccw, VIRTIO_CCW_DOING_SET_CONF_IND); if (ret) @@ -1092,17 +1102,17 @@ static void virtio_ccw_int_handler(struct ccw_device *cdev, vcdev->err = -EIO; } virtio_ccw_check_activity(vcdev, activity); - for_each_set_bit(i, &vcdev->indicators, - sizeof(vcdev->indicators) * BITS_PER_BYTE) { + for_each_set_bit(i, indicators(vcdev), + sizeof(*indicators(vcdev)) * BITS_PER_BYTE) { /* The bit clear must happen before the vring kick. */ - clear_bit(i, &vcdev->indicators); + clear_bit(i, indicators(vcdev)); barrier(); vq = virtio_ccw_vq_by_ind(vcdev, i); vring_interrupt(0, vq); } - if (test_bit(0, &vcdev->indicators2)) { + if (test_bit(0, indicators2(vcdev))) { virtio_config_changed(&vcdev->vdev); - clear_bit(0, &vcdev->indicators2); + clear_bit(0, indicators2(vcdev)); } } -- 2.16.4
next prev parent reply other threads:[~2019-04-26 18:32 UTC|newest] Thread overview: 182+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-04-26 18:32 [PATCH 00/10] s390: virtio: support protected virtualization Halil Pasic 2019-04-26 18:32 ` Halil Pasic 2019-04-26 18:32 ` [PATCH 01/10] virtio/s390: use vring_create_virtqueue Halil Pasic 2019-04-26 18:32 ` Halil Pasic 2019-05-03 9:17 ` Cornelia Huck 2019-05-03 20:04 ` Michael S. Tsirkin 2019-05-03 20:04 ` Michael S. Tsirkin 2019-05-04 14:03 ` Halil Pasic 2019-05-04 14:03 ` Halil Pasic 2019-05-05 11:15 ` Cornelia Huck 2019-05-05 11:15 ` Cornelia Huck 2019-05-07 13:58 ` Christian Borntraeger 2019-05-07 13:58 ` Christian Borntraeger 2019-05-08 20:12 ` Halil Pasic 2019-05-08 20:12 ` Halil Pasic 2019-05-10 14:07 ` Cornelia Huck 2019-05-10 14:07 ` Cornelia Huck 2019-05-12 16:47 ` Michael S. Tsirkin 2019-05-12 16:47 ` Michael S. Tsirkin 2019-05-13 9:52 ` Cornelia Huck 2019-05-13 9:52 ` Cornelia Huck 2019-05-13 12:27 ` Michael Mueller 2019-05-13 12:27 ` Michael Mueller 2019-05-13 12:29 ` Cornelia Huck 2019-05-13 12:29 ` Cornelia Huck 2019-04-26 18:32 ` [PATCH 02/10] virtio/s390: DMA support for virtio-ccw Halil Pasic 2019-04-26 18:32 ` Halil Pasic 2019-05-03 9:31 ` Cornelia Huck 2019-04-26 18:32 ` [PATCH 03/10] virtio/s390: enable packed ring Halil Pasic 2019-04-26 18:32 ` Halil Pasic 2019-05-03 9:44 ` Cornelia Huck 2019-05-05 15:13 ` Thomas Huth 2019-05-05 15:13 ` Thomas Huth 2019-04-26 18:32 ` [PATCH 04/10] s390/mm: force swiotlb for protected virtualization Halil Pasic 2019-04-26 18:32 ` Halil Pasic 2019-04-26 19:27 ` Christoph Hellwig 2019-04-26 19:27 ` Christoph Hellwig 2019-04-29 13:59 ` Halil Pasic 2019-04-29 13:59 ` Halil Pasic 2019-04-29 14:05 ` Christian Borntraeger 2019-04-29 14:05 ` Christian Borntraeger 2019-05-13 12:50 ` Michael Mueller 2019-05-13 12:50 ` Michael Mueller 2019-05-08 13:15 ` Claudio Imbrenda 2019-05-08 13:15 ` Claudio Imbrenda 2019-05-09 22:34 ` Halil Pasic 2019-05-09 22:34 ` Halil Pasic 2019-05-15 14:15 ` Michael Mueller 2019-05-15 14:15 ` Michael Mueller [not found] ` <ad23f5e7-dc78-04af-c892-47bbc65134c6@linux.ibm.com> 2019-05-09 18:05 ` Jason J. Herne 2019-05-09 18:05 ` Jason J. Herne 2019-05-09 18:05 ` Jason J. Herne 2019-05-10 7:49 ` Claudio Imbrenda 2019-05-10 7:49 ` Claudio Imbrenda 2019-04-26 18:32 ` [PATCH 05/10] s390/cio: introduce DMA pools to cio Halil Pasic 2019-04-26 18:32 ` Halil Pasic 2019-05-08 13:18 ` Sebastian Ott 2019-05-08 13:18 ` Sebastian Ott 2019-05-08 21:22 ` Halil Pasic 2019-05-08 21:22 ` Halil Pasic 2019-05-09 8:40 ` Sebastian Ott 2019-05-09 8:40 ` Sebastian Ott 2019-05-09 10:11 ` Cornelia Huck 2019-05-09 10:11 ` Cornelia Huck 2019-05-09 22:11 ` Halil Pasic 2019-05-09 22:11 ` Halil Pasic 2019-05-10 14:10 ` Cornelia Huck 2019-05-10 14:10 ` Cornelia Huck 2019-05-12 18:22 ` Halil Pasic 2019-05-12 18:22 ` Halil Pasic 2019-05-13 13:29 ` Cornelia Huck 2019-05-13 13:29 ` Cornelia Huck 2019-05-15 17:12 ` Halil Pasic 2019-05-15 17:12 ` Halil Pasic 2019-05-16 6:13 ` Cornelia Huck 2019-05-16 6:13 ` Cornelia Huck 2019-05-16 13:59 ` Sebastian Ott 2019-05-16 13:59 ` Sebastian Ott 2019-05-20 12:13 ` Halil Pasic 2019-05-20 12:13 ` Halil Pasic 2019-05-21 8:46 ` Michael Mueller 2019-05-21 8:46 ` Michael Mueller 2019-05-22 12:07 ` Sebastian Ott 2019-05-22 12:07 ` Sebastian Ott 2019-05-22 22:12 ` Halil Pasic 2019-05-22 22:12 ` Halil Pasic 2019-05-23 15:17 ` Halil Pasic 2019-05-23 15:17 ` Halil Pasic 2019-04-26 18:32 ` [PATCH 06/10] s390/cio: add basic protected virtualization support Halil Pasic 2019-04-26 18:32 ` Halil Pasic 2019-05-08 13:46 ` Sebastian Ott 2019-05-08 13:46 ` Sebastian Ott 2019-05-08 13:54 ` Christoph Hellwig 2019-05-08 13:54 ` Christoph Hellwig 2019-05-08 21:08 ` Halil Pasic 2019-05-08 21:08 ` Halil Pasic 2019-05-09 8:52 ` Sebastian Ott 2019-05-09 8:52 ` Sebastian Ott 2019-05-08 14:23 ` Pierre Morel 2019-05-08 14:23 ` Pierre Morel 2019-05-13 9:41 ` Cornelia Huck 2019-05-13 9:41 ` Cornelia Huck 2019-05-14 14:47 ` Jason J. Herne 2019-05-14 14:47 ` Jason J. Herne 2019-05-15 21:08 ` Halil Pasic 2019-05-15 21:08 ` Halil Pasic 2019-05-16 6:32 ` Cornelia Huck 2019-05-16 6:32 ` Cornelia Huck 2019-05-16 13:42 ` Halil Pasic 2019-05-16 13:42 ` Halil Pasic 2019-05-16 13:54 ` Cornelia Huck 2019-05-16 13:54 ` Cornelia Huck 2019-05-15 20:51 ` Halil Pasic 2019-05-15 20:51 ` Halil Pasic 2019-05-16 6:29 ` Cornelia Huck 2019-05-16 6:29 ` Cornelia Huck 2019-05-18 18:11 ` Halil Pasic 2019-05-18 18:11 ` Halil Pasic 2019-05-20 10:21 ` Cornelia Huck 2019-05-20 10:21 ` Cornelia Huck 2019-05-20 12:34 ` Halil Pasic 2019-05-20 12:34 ` Halil Pasic 2019-05-20 13:43 ` Cornelia Huck 2019-05-20 13:43 ` Cornelia Huck 2019-04-26 18:32 ` [PATCH 07/10] s390/airq: use DMA memory for adapter interrupts Halil Pasic 2019-04-26 18:32 ` Halil Pasic 2019-05-08 13:58 ` Sebastian Ott 2019-05-08 13:58 ` Sebastian Ott 2019-05-09 11:37 ` Cornelia Huck 2019-05-09 11:37 ` Cornelia Huck 2019-05-13 12:59 ` Cornelia Huck 2019-05-13 12:59 ` Cornelia Huck 2019-04-26 18:32 ` Halil Pasic [this message] 2019-04-26 18:32 ` [PATCH 08/10] virtio/s390: add indirection to indicators access Halil Pasic 2019-05-08 14:31 ` Pierre Morel 2019-05-08 14:31 ` Pierre Morel 2019-05-09 12:01 ` Pierre Morel 2019-05-09 12:01 ` Pierre Morel 2019-05-09 18:26 ` Halil Pasic 2019-05-09 18:26 ` Halil Pasic 2019-05-10 7:43 ` Pierre Morel 2019-05-10 7:43 ` Pierre Morel 2019-05-10 11:54 ` Halil Pasic 2019-05-10 11:54 ` Halil Pasic 2019-05-10 15:36 ` Pierre Morel 2019-05-10 15:36 ` Pierre Morel 2019-05-13 10:15 ` Cornelia Huck 2019-05-13 10:15 ` Cornelia Huck 2019-05-16 15:24 ` Pierre Morel 2019-05-16 15:24 ` Pierre Morel 2019-04-26 18:32 ` [PATCH 09/10] virtio/s390: use DMA memory for ccw I/O and classic notifiers Halil Pasic 2019-04-26 18:32 ` Halil Pasic 2019-05-08 14:46 ` Pierre Morel 2019-05-08 14:46 ` Pierre Morel 2019-05-09 13:30 ` Pierre Morel 2019-05-09 13:30 ` Pierre Morel 2019-05-09 18:30 ` Halil Pasic 2019-05-09 18:30 ` Halil Pasic 2019-05-13 13:54 ` Cornelia Huck 2019-05-13 13:54 ` Cornelia Huck 2019-04-26 18:32 ` [PATCH 10/10] virtio/s390: make airq summary indicators DMA Halil Pasic 2019-04-26 18:32 ` Halil Pasic 2019-05-08 15:11 ` Pierre Morel 2019-05-08 15:11 ` Pierre Morel 2019-05-15 13:33 ` Michael Mueller 2019-05-15 13:33 ` Michael Mueller 2019-05-15 17:23 ` Halil Pasic 2019-05-15 17:23 ` Halil Pasic 2019-05-13 12:20 ` Cornelia Huck 2019-05-13 12:20 ` Cornelia Huck 2019-05-15 13:43 ` Michael Mueller 2019-05-15 13:43 ` Michael Mueller 2019-05-15 13:50 ` Cornelia Huck 2019-05-15 13:50 ` Cornelia Huck 2019-05-15 17:18 ` Halil Pasic 2019-05-15 17:18 ` Halil Pasic 2019-05-03 9:55 ` [PATCH 00/10] s390: virtio: support protected virtualization Cornelia Huck 2019-05-03 10:03 ` Juergen Gross 2019-05-03 13:33 ` Cornelia Huck 2019-05-03 13:33 ` Cornelia Huck 2019-05-04 13:58 ` Halil Pasic 2019-05-04 13:58 ` Halil Pasic
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