The following patch changes the intel-iommu.c code to use the TSC ... hang in early boot spinning in the IOMMU_WAIT_IO macro. This patch will replace the ... #define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \ {\ - unsigned long start_time = jiffies;\ + ...

linux-kernel - mark gross - May 12 2008 - 16:41

... :41 pm mark gross wrote: > The following patch changes the intel-iommu.c code to use the TSC > instead of jiffies for detecting bad DMAR functionality. Some systems > ... in early boot spinning in the > IOMMU_WAIT_IO macro. This patch will replace the ...

linux-kernel - Jesse Barnes - May 12 2008 - 16:43