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...; */ child_device_obj->device.parent = root_dev; child_device_obj->device.release = vmbus_device_release; @@ -877,10 +873,10 @@ static irqreturn_t vmbus_isr(int irq, void *dev_id) /* Schedules a dpc if necessary */ if (ret > 0) { if (test_bit(0, (unsigned long *)&ret)) - tasklet_schedule(&vmbus_drv.msg_dpc); + tasklet_schedule(&hv_bus.msg_dpc); if (test_bit(1, (unsigned long *)&ret)) - tasklet_schedule(&vmbus_drv.event_dpc); + tasklet_schedule(&hv_bus.event_dpc); return IRQ_HANDLED; } else { -- 1.5.5.6

...; */ child_device_obj->device.parent = root_dev; child_device_obj->device.release = vmbus_device_release; @@ -877,10 +873,10 @@ static irqreturn_t vmbus_isr(int irq, void *dev_id) /* Schedules a dpc if necessary */ if (ret > 0) { if (test_bit(0, (unsigned long *)&ret)) - tasklet_schedule(&vmbus_drv.msg_dpc); + tasklet_schedule(&hv_bus.msg_dpc); if (test_bit(1, (unsigned long *)&ret)) - tasklet_schedule(&vmbus_drv.event_dpc); + tasklet_schedule(&hv_bus.event_dpc); return IRQ_HANDLED; } else { -- 1.5.5.6

Further cleanup of the vmbus driver: 1) Cleanup the interrupt handler by inlining some code. 2) Ensure message handling is performed on the same CPU that takes the vmbus interrupt. 3) Check for events before messages (from the host). 4) Disable auto eoi for the vmbus interrupt since Linux will eoi the interrupt anyway. 5) Some general cleanup. Regards, K. Y

Further cleanup of the vmbus driver: 1) Cleanup the interrupt handler by inlining some code. 2) Ensure message handling is performed on the same CPU that takes the vmbus interrupt. 3) Check for events before messages (from the host). 4) Disable auto eoi for the vmbus interrupt since Linux will eoi the interrupt anyway. 5) Some general cleanup. Regards, K. Y

Hello everyone, Reposting with after having applied the (minor) fixes suggested by Wei and Jan. Allen, if you can tell us what you think about this, or suggest someone else to ask some feedback to, if you''re no longer involved with VT-d, that would be great! :-) -- As already discussed here [1], dealing with IOMMU faults in interrupt context may cause nasty things to happen, up to

This is a rebase/resend of earlier patches. I skipped the pure cosmetic patches for now. Mostly this is consolidation earlier changes, removing dead code etc. The important part is the change for allowing a vmbus channel to get callback directly in interrupt mode; this is necessary for NAPI support. Stephen Hemminger (14): vmbus: use kernel bitops for traversing interrupt mask vmbus: drop

This is a rebase/resend of earlier patches. I skipped the pure cosmetic patches for now. Mostly this is consolidation earlier changes, removing dead code etc. The important part is the change for allowing a vmbus channel to get callback directly in interrupt mode; this is necessary for NAPI support. Stephen Hemminger (14): vmbus: use kernel bitops for traversing interrupt mask vmbus: drop

...er_list xmit_free_timer; @@ -116,9 +113,8 @@ static void skb_xmit_done(struct virtque /* We were probably waiting for more output buffers. */ netif_wake_queue(vi->dev); - /* Make sure we re-xmit last_xmit_skb: if there are no more packets - * queued, start_xmit won't be called. */ - tasklet_schedule(&vi->tasklet); + if (vi->free_in_tasklet) + tasklet_schedule(&vi->tasklet); } static void receive_skb(struct net_device *dev, struct sk_buff *skb, @@ -509,12 +505,7 @@ static void xmit_tasklet(unsigned long d struct virtnet_info *vi = (void *)data; netif_tx_lock_bh(vi-&...

...er_list xmit_free_timer; @@ -116,9 +113,8 @@ static void skb_xmit_done(struct virtque /* We were probably waiting for more output buffers. */ netif_wake_queue(vi->dev); - /* Make sure we re-xmit last_xmit_skb: if there are no more packets - * queued, start_xmit won't be called. */ - tasklet_schedule(&vi->tasklet); + if (vi->free_in_tasklet) + tasklet_schedule(&vi->tasklet); } static void receive_skb(struct net_device *dev, struct sk_buff *skb, @@ -509,12 +505,7 @@ static void xmit_tasklet(unsigned long d struct virtnet_info *vi = (void *)data; netif_tx_lock_bh(vi-&...

...uld be interactive */ + spin_lock_irq(&console_lock); + + sercon_puts(kbuf); + video_puts(kbuf); - sercon_puts(kbuf); - video_puts(kbuf); + if ( opt_console_to_ring ) + { + conring_puts(kbuf); + tasklet_schedule(&notify_dom0_con_ring_tasklet); + } - if ( opt_console_to_ring ) + spin_unlock_irq(&console_lock); + } + else { - conring_puts(kbuf); - tasklet_schedule(&notify_dom0_con_ring_tasklet); + char *kin =...

This patch-set fixes the following issues in the vmbus driver (vmbus_drv.c): Make vmbus driver a platform pci device and cleanup root device management and irq allocation (patches 1/12 through 3/12): 1) Make vmbus driver a platform pci driver. 2) Cleanup root device management. 3) Leverage the pci model for allocating irq. General cleanup of vmbus driver (patches 4/12 though 12/12): 1)

This patch-set fixes the following issues in the vmbus driver (vmbus_drv.c): Make vmbus driver a platform pci device and cleanup root device management and irq allocation (patches 1/12 through 3/12): 1) Make vmbus driver a platform pci driver. 2) Cleanup root device management. 3) Leverage the pci model for allocating irq. General cleanup of vmbus driver (patches 4/12 though 12/12): 1)

This is a resend of the patches yet to be applied. This patch-set addresses some of the bus/driver model cleanup that Greg sugested over the last couple of days. In this patch-set we deal with the following issues: 1) Cleanup error handling in the vmbus_probe() and vmbus_child_device_register() functions. Fixed a bug in the probe failure path as part of this cleanup. 2) The Windows

This is a resend of the patches yet to be applied. This patch-set addresses some of the bus/driver model cleanup that Greg sugested over the last couple of days. In this patch-set we deal with the following issues: 1) Cleanup error handling in the vmbus_probe() and vmbus_child_device_register() functions. Fixed a bug in the probe failure path as part of this cleanup. 2) The Windows

...uld be interactive */ + spin_lock_irq(&console_lock); + + sercon_puts(kbuf); + video_puts(kbuf); - sercon_puts(kbuf); - video_puts(kbuf); + if ( opt_console_to_ring ) + { + conring_puts(kbuf); + tasklet_schedule(&notify_dom0_con_ring_tasklet); + } - if ( opt_console_to_ring ) + spin_unlock_irq(&console_lock); + } + else { - conring_puts(kbuf); - tasklet_schedule(&notify_dom0_con_ring_tasklet); + char *kin =...

...og_skb_q, skb); + break; + } + atomic_dec(&vmc_dev.recv_posted); + } + spin_unlock_bh(&vmc->backlog_skb_q.lock); + + BUG_ON(atomic_read(&vmc_dev.recv_posted) < 0); + + /* this will repost buffers */ + if (atomic_read(&vmc_dev.recv_posted) < max_ring_len / 2) + tasklet_schedule(&vmc_dev.rx_tasklet); + + skb = skb_recv_datagram(sk, flags, noblock, &err); + if (!skb) { + if (sk->sk_shutdown & RCV_SHUTDOWN) + err = 0; + return err; + } + + chunk = min_t(unsigned int, skb->len, len); + + err = memcpy_toiovec(msg->msg_iov, skb->data, chunk)...

...og_skb_q, skb); + break; + } + atomic_dec(&vmc_dev.recv_posted); + } + spin_unlock_bh(&vmc->backlog_skb_q.lock); + + BUG_ON(atomic_read(&vmc_dev.recv_posted) < 0); + + /* this will repost buffers */ + if (atomic_read(&vmc_dev.recv_posted) < max_ring_len / 2) + tasklet_schedule(&vmc_dev.rx_tasklet); + + skb = skb_recv_datagram(sk, flags, noblock, &err); + if (!skb) { + if (sk->sk_shutdown & RCV_SHUTDOWN) + err = 0; + return err; + } + + chunk = min_t(unsigned int, skb->len, len); + + err = memcpy_toiovec(msg->msg_iov, skb->data, chunk)...

Further cleanup of the hv drivers. 1) Cleanup reference counting. 2) Handle all block devices using the storvsc driver. I have modified the implementation here based on Christoph's feedback on my earlier implementation. 3) Fix bugs. 4) Accomodate some host side scsi emulation bugs. 5) In case of scsi errors off-line the device. This patch-set further reduces the size of

Further cleanup of the hv drivers. 1) Cleanup reference counting. 2) Handle all block devices using the storvsc driver. I have modified the implementation here based on Christoph's feedback on my earlier implementation. 3) Fix bugs. 4) Accomodate some host side scsi emulation bugs. 5) In case of scsi errors off-line the device. This patch-set further reduces the size of

This patch-set addresses some of the bus/driver model cleanup that Greg sugested over the last couple of days. In this patch-set we deal with the following issues: 1) Cleanup unnecessary state in struct hv_device and struct hv_driver to be compliant with the Linux Driver model. 2) Cleanup the vmbus_match() function to conform with the Linux Driver model. 3) Cleanup error