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Date: Fri, 14 Nov 2014 16:12:02 +0800 From: "Li, ZhenHua" <zhen-hual@...com> To: Baoquan He <bhe@...hat.com> CC: "Li, ZhenHua" <zhen-hual@...com>, Minfei Huang <mhuang@...hat.com>, kexec@...ts.infradead.org, joro@...tes.org, dwmw2@...radead.org, iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 1/1] x86/iommu: fix incorrect bit operations in setting values > 1st step shows we should NOT disable the iommu when it is already > enabled. But current code does disable-enable. So there is still works > to do. > The original kernel does a disable and re-enable , Bill's patchset removed the disable operation. > I think step 2 is necessary, because when the driver initializes, the > device need a new map, and the old data from the old kernel can not be > used for the new driver. > > Now I am trying to implement these ideas. > >> Thanks -- 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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