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Date: Tue, 27 Nov 2007 15:48:02 -0800 From: mark gross <mgross@...ux.intel.com> To: lkml <linux-kernel@...r.kernel.org> Cc: ak@...ux.intel.com Subject: [mgross@...ux.intel.com: intel-iommu-PMEN-think-oh patch.] I forgot to cc the list. --mgross ----- Forwarded message from mark gross <mgross@...ux.intel.com> ----- Date: Tue, 27 Nov 2007 15:46:09 -0800 From: mark gross <mgross@...ux.intel.com> To: Andrew Morton <akpm@...ux-foundation.org> Reply-To: mgross@...ux.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@...ux.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@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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