On Tue, 23 Feb 2016, DIXLOR wrote:
>
> [ 1.828887] iommu: Adding device 0000:00:14.5 to group 10
> [ 1.831805] ------------[ cut here ]------------
> [ 1.831814] WARNING: CPU: 0 PID: 1 at drivers/iommu/amd_iommu.c:1958
> 0xffffffff812d6449()
>
> static int __attach_device(struct iommu_dev_data *dev_data,
> struct protection_domain *domain)
> {
> int ret;
>
> /*
> * Must be called with IRQs disabled. Warn here to detect early
> * when its not.
> */
> WARN_ON(!irqs_disabled());
> ^^^^^^^^^^^^^^^^^^^^^^^^^^ WARNING
The patch below fixes that.
Thanks,
tglx
8<--------------------------------
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -1952,10 +1952,10 @@ static int __attach_device(struct iommu_
int ret;
/*
- * Must be called with IRQs disabled. Warn here to detect early
- * when its not.
+ * Must be called with IRQs disabled on a non RT kernel. Warn here to
+ * detect early when its not.
*/
- WARN_ON(!irqs_disabled());
+ WARN_ON_NORT(!irqs_disabled());
/* lock domain */
spin_lock(&domain->lock);
--
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