Messages in this thread Patch in this message | | | Date | Tue, 27 Nov 2007 15:48:02 -0800 | From | mark gross <> | Subject | [: intel-iommu-PMEN-think-oh patch.] |
| |
I forgot to cc the list.
--mgross
----- Forwarded message from mark gross <mgross@linux.intel.com> -----
Date: Tue, 27 Nov 2007 15:46:09 -0800 From: mark gross <mgross@linux.intel.com> To: Andrew Morton <akpm@linux-foundation.org> Reply-To: mgross@linux.intel.com Subject: intel-iommu-PMEN-think-oh patch.
I screwed up with my earlier patch to enable the portected memroy. The macro IOMMU_WAIT, exits when the condition goes true. Without this patch the code will hang at boot and some ( all?) vtd enabled systems.
--mgross
Signed-off-by: mark gross <mgross@linux.intel.com>
Index: linux-2.6.24-rc2+/drivers/pci/intel-iommu.c =================================================================== --- linux-2.6.24-rc2+.orig/drivers/pci/intel-iommu.c 2007-11-27 15:29:38.000000000 -0800 +++ linux-2.6.24-rc2+/drivers/pci/intel-iommu.c 2007-11-27 15:30:06.000000000 -0800 @@ -704,7 +704,7 @@ /* wait for the protected region status bit to clear */ IOMMU_WAIT_OP(iommu, DMAR_PMEN_REG, - readl, (pmen & DMA_PMEN_PRS), pmen); + readl, !(pmen & DMA_PMEN_PRS), pmen); spin_unlock_irqrestore(&iommu->register_lock, flags); } ----- End forwarded message ----- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |