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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-09-21 08:48:33 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-09-21 08:48:33 +0100 |
| commit | f70cac8d9c7125f83048f8b3d1c60f5a041a165c (patch) | |
| tree | 0d0efd72c1a41f973a919b16aac1d8210ed1ee30 /drivers/iommu/amd_iommu.c | |
| parent | 4722cd7741c6404f967f7a7b8b666540b6c1663e (diff) | |
| parent | 08aab447c56a5388cf0c768da476ad022f00fef8 (diff) | |
Merge branch 'kprobes-test' of git://git.yxit.co.uk/linux into devel-stable
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index a14f8dc2346..0e4227f457a 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -605,7 +605,9 @@ static void build_inv_all(struct iommu_cmd *cmd) * Writes the command to the IOMMUs command buffer and informs the * hardware about the new command. */ -static int iommu_queue_command(struct amd_iommu *iommu, struct iommu_cmd *cmd) +static int iommu_queue_command_sync(struct amd_iommu *iommu, + struct iommu_cmd *cmd, + bool sync) { u32 left, tail, head, next_tail; unsigned long flags; @@ -639,13 +641,18 @@ again: copy_cmd_to_buffer(iommu, cmd, tail); /* We need to sync now to make sure all commands are processed */ - iommu->need_sync = true; + iommu->need_sync = sync; spin_unlock_irqrestore(&iommu->lock, flags); return 0; } +static int iommu_queue_command(struct amd_iommu *iommu, struct iommu_cmd *cmd) +{ + return iommu_queue_command_sync(iommu, cmd, true); +} + /* * This function queues a completion wait command into the command * buffer of an IOMMU @@ -661,7 +668,7 @@ static int iommu_completion_wait(struct amd_iommu *iommu) build_completion_wait(&cmd, (u64)&sem); - ret = iommu_queue_command(iommu, &cmd); + ret = iommu_queue_command_sync(iommu, &cmd, false); if (ret) return ret; @@ -840,14 +847,9 @@ static void domain_flush_complete(struct protection_domain *domain) static void domain_flush_devices(struct protection_domain *domain) { struct iommu_dev_data *dev_data; - unsigned long flags; - - spin_lock_irqsave(&domain->lock, flags); list_for_each_entry(dev_data, &domain->dev_list, list) device_flush_dte(dev_data); - - spin_unlock_irqrestore(&domain->lock, flags); } /**************************************************************************** |