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Merge tag 'vfio-v5.4-rc1' of git://github.com/awilliam/linux-vfio

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Pull VFIO updates from Alex Williamson:

 - Fix spapr iommu error case case (Alexey Kardashevskiy)

 - Consolidate region type definitions (Cornelia Huck)

 - Restore saved original PCI state on release (hexin)

 - Simplify mtty sample driver interrupt path (Parav Pandit)

 - Support for reporting valid IOVA regions to user (Shameer Kolothum)

* tag 'vfio-v5.4-rc1' of git://github.com/awilliam/linux-vfio:
  vfio_pci: Restore original state on release
  vfio/type1: remove duplicate retrieval of reserved regions
  vfio/type1: Add IOVA range capability support
  vfio/type1: check dma map request is within a valid iova range
  vfio/spapr_tce: Fix incorrect tce_iommu_group memory free
  vfio-mdev/mtty: Simplify interrupt generation
  vfio: re-arrange vfio region definitions
  vfio/type1: Update iova list on detach
  vfio/type1: Check reserved region conflict and update iova list
  vfio/type1: Introduce iova list and add iommu aperture validity check
This commit is contained in:
Linus Torvalds
2019-09-20 15:06:13 -07:00
parent 45824fc0da e6c5d727db
commit 1ddd00276f
5 changed files with 583 additions and 71 deletions
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39
samples/vfio-mdev/mtty.c
View File

@@ -152,20 +152,9 @@ static const struct file_operations vd_fops = {
/* function prototypes */
static int mtty_trigger_interrupt(const guid_t *uuid);
static int mtty_trigger_interrupt(struct mdev_state *mdev_state);
/* Helper functions */
static struct mdev_state *find_mdev_state_by_uuid(const guid_t *uuid)
{
struct mdev_state *mds;
list_for_each_entry(mds, &mdev_devices_list, next) {
if (guid_equal(mdev_uuid(mds->mdev), uuid))
return mds;
}
return NULL;
}
static void dump_buffer(u8 *buf, uint32_t count)
{
@@ -337,8 +326,7 @@ static void handle_bar_write(unsigned int index, struct mdev_state *mdev_state,
pr_err("Serial port %d: Fifo level trigger\n",
index);
#endif
mtty_trigger_interrupt(
mdev_uuid(mdev_state->mdev));
mtty_trigger_interrupt(mdev_state);
}
} else {
#if defined(DEBUG_INTR)
@@ -352,8 +340,7 @@ static void handle_bar_write(unsigned int index, struct mdev_state *mdev_state,
*/
if (mdev_state->s[index].uart_reg[UART_IER] &
UART_IER_RLSI)
mtty_trigger_interrupt(
mdev_uuid(mdev_state->mdev));
mtty_trigger_interrupt(mdev_state);
}
mutex_unlock(&mdev_state->rxtx_lock);
break;
@@ -372,8 +359,7 @@ static void handle_bar_write(unsigned int index, struct mdev_state *mdev_state,
pr_err("Serial port %d: IER_THRI write\n",
index);
#endif
mtty_trigger_interrupt(
mdev_uuid(mdev_state->mdev));
mtty_trigger_interrupt(mdev_state);
}
mutex_unlock(&mdev_state->rxtx_lock);
@@ -444,7 +430,7 @@ static void handle_bar_write(unsigned int index, struct mdev_state *mdev_state,
#if defined(DEBUG_INTR)
pr_err("Serial port %d: MCR_OUT2 write\n", index);
#endif
mtty_trigger_interrupt(mdev_uuid(mdev_state->mdev));
mtty_trigger_interrupt(mdev_state);
}
if ((mdev_state->s[index].uart_reg[UART_IER] & UART_IER_MSI) &&
@@ -452,7 +438,7 @@ static void handle_bar_write(unsigned int index, struct mdev_state *mdev_state,
#if defined(DEBUG_INTR)
pr_err("Serial port %d: MCR RTS/DTR write\n", index);
#endif
mtty_trigger_interrupt(mdev_uuid(mdev_state->mdev));
mtty_trigger_interrupt(mdev_state);
}
break;
@@ -503,8 +489,7 @@ static void handle_bar_read(unsigned int index, struct mdev_state *mdev_state,
#endif
if (mdev_state->s[index].uart_reg[UART_IER] &
UART_IER_THRI)
mtty_trigger_interrupt(
mdev_uuid(mdev_state->mdev));
mtty_trigger_interrupt(mdev_state);
}
mutex_unlock(&mdev_state->rxtx_lock);
@@ -1028,17 +1013,9 @@ static int mtty_set_irqs(struct mdev_device *mdev, uint32_t flags,
return ret;
}
static int mtty_trigger_interrupt(const guid_t *uuid)
static int mtty_trigger_interrupt(struct mdev_state *mdev_state)
{
int ret = -1;
struct mdev_state *mdev_state;
mdev_state = find_mdev_state_by_uuid(uuid);
if (!mdev_state) {
pr_info("%s: mdev not found\n", __func__);
return -EINVAL;
}
if ((mdev_state->irq_index == VFIO_PCI_MSI_IRQ_INDEX) &&
(!mdev_state->msi_evtfd))