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Message-ID: <A6AD88C3F2289247BE726C37303E1EB8B0044F04@orsmsx505.amr.corp.intel.com> Date: Thu, 18 Jun 2009 11:28:06 -0700 From: "Yu, Fenghua" <fenghua.yu@...el.com> To: 'Chris Wright' <chrisw@...s-sol.org> CC: 'David Woodhouse' <dwmw2@...radead.org>, 'Linus Torvalds' <torvalds@...ux-foundation.org>, 'Stephen Rothwell' <sfr@...b.auug.org.au>, 'Andrew Morton' <akpm@...ux-foundation.org>, 'Ingo Molnar' <mingo@...e.hu>, 'Christopher Wright' <chrisw@...hat.com>, "Kay, Allen M" <allen.m.kay@...el.com>, 'iommu' <iommu@...ts.linux-foundation.org>, 'lkml' <linux-kernel@...r.kernel.org> Subject: RE: [PATCH 1/2] IOMMU Identity Mapping Support: iommu_identity_mapping definition >> >> The first patch defines iommu_identity_mapping varialbe which controls >the >> identity mapping code and is 0 by default. > >The only real difference between "pt" and "identity" is hardware support. >We should have a single value we don't have to tell users to do different >things depending on their hardware (they won't even know what they have) >to achieve the same result. Technically keeping two separate options in base kernel might be clear and easy to understand. A distro might merge them together or have other usage model. Thanks. -Fenghua -- 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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