From aa6f5ffbdba45aa8e19e5048648fc6c7b25376d3 Mon Sep 17 00:00:00 2001 From: merge Date: Thu, 22 Jan 2009 13:55:32 +0000 Subject: MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040-1232632141 / fdf777a63bcb59e0dfd78bfe2c6242e01f6d4eb9 ... parent commitmessage: From: merge MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 stable-tracking-hist top was MERGE-via-mokopatches-tracking-fix-stray-endmenu-patch-1232632040 / 90463bfd2d5a3c8b52f6e6d71024a00e052b0ced ... parent commitmessage: From: merge MERGE-via-mokopatches-tracking-hist-fix-stray-endmenu-patch mokopatches-tracking-hist top was fix-stray-endmenu-patch / 3630e0be570de8057e7f8d2fe501ed353cdf34e6 ... parent commitmessage: From: Andy Green fix-stray-endmenu.patch Signed-off-by: Andy Green --- drivers/s390/kvm/kvm_virtio.c | 43 +++++++++++++++++++++++++++++++------------ 1 file changed, 31 insertions(+), 12 deletions(-) (limited to 'drivers/s390/kvm') diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c index ff4a6931bb8..cbc8566fab7 100644 --- a/drivers/s390/kvm/kvm_virtio.c +++ b/drivers/s390/kvm/kvm_virtio.c @@ -24,7 +24,6 @@ #include #include #include -#include #define VIRTIO_SUBCODE_64 0x0D00 @@ -188,11 +187,13 @@ static struct virtqueue *kvm_find_vq(struct virtio_device *vdev, config = kvm_vq_config(kdev->desc)+index; err = vmem_add_mapping(config->address, - vring_size(config->num, PAGE_SIZE)); + vring_size(config->num, + KVM_S390_VIRTIO_RING_ALIGN)); if (err) goto out; - vq = vring_new_virtqueue(config->num, vdev, (void *) config->address, + vq = vring_new_virtqueue(config->num, KVM_S390_VIRTIO_RING_ALIGN, + vdev, (void *) config->address, kvm_notify, callback); if (!vq) { err = -ENOMEM; @@ -209,7 +210,8 @@ static struct virtqueue *kvm_find_vq(struct virtio_device *vdev, return vq; unmap: vmem_remove_mapping(config->address, - vring_size(config->num, PAGE_SIZE)); + vring_size(config->num, + KVM_S390_VIRTIO_RING_ALIGN)); out: return ERR_PTR(err); } @@ -220,7 +222,8 @@ static void kvm_del_vq(struct virtqueue *vq) vring_del_virtqueue(vq); vmem_remove_mapping(config->address, - vring_size(config->num, PAGE_SIZE)); + vring_size(config->num, + KVM_S390_VIRTIO_RING_ALIGN)); } /* @@ -295,13 +298,29 @@ static void scan_devices(void) */ static void kvm_extint_handler(u16 code) { - void *data = (void *) *(long *) __LC_PFAULT_INTPARM; - u16 subcode = S390_lowcore.cpu_addr; + struct virtqueue *vq; + u16 subcode; + int config_changed; + subcode = S390_lowcore.cpu_addr; if ((subcode & 0xff00) != VIRTIO_SUBCODE_64) return; - vring_interrupt(0, data); + /* The LSB might be overloaded, we have to mask it */ + vq = (struct virtqueue *) ((*(long *) __LC_PFAULT_INTPARM) & ~1UL); + + /* We use the LSB of extparam, to decide, if this interrupt is a config + * change or a "standard" interrupt */ + config_changed = (*(int *) __LC_EXT_PARAMS & 1); + + if (config_changed) { + struct virtio_driver *drv; + drv = container_of(vq->vdev->dev.driver, + struct virtio_driver, driver); + if (drv->config_changed) + drv->config_changed(vq->vdev); + } else + vring_interrupt(0, vq); } /* @@ -315,20 +334,20 @@ static int __init kvm_devices_init(void) if (!MACHINE_IS_KVM) return -ENODEV; - kvm_root = s390_root_dev_register("kvm_s390"); + kvm_root = root_device_register("kvm_s390"); if (IS_ERR(kvm_root)) { rc = PTR_ERR(kvm_root); printk(KERN_ERR "Could not register kvm_s390 root device"); return rc; } - rc = vmem_add_mapping(PFN_PHYS(max_pfn), PAGE_SIZE); + rc = vmem_add_mapping(real_memory_size, PAGE_SIZE); if (rc) { - s390_root_dev_unregister(kvm_root); + root_device_unregister(kvm_root); return rc; } - kvm_devices = (void *) PFN_PHYS(max_pfn); + kvm_devices = (void *) real_memory_size; ctl_set_bit(0, 9); register_external_interrupt(0x2603, kvm_extint_handler); -- cgit v1.2.3