Joerg,
I am seeing IO_PAGE_FAULTs on AMD system running releases prior to 3.7.
I focused my debug and testing on 3.4. I am hoping to find a solution
for this problem in 3.4. I don't see any IO_PAGE_FAULTs with 3.7 and
later releases on this system.
On this system BIOS specifies Unity mapped (dire
Theoretically TEGRA_IOMMU_SMMU depends on ARCH_TEGRA_3x_SOC and
ARCH_TEGRA_114_SOC only. This patch allows a Tegra20 only kernel to
enable SMMU(Tegra20 doesn't have a SMMU), which could avoid editing
this Kconfig entry every time we add a new chip later.
Signed-off-by: Hiroshi Doyu
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> -Original Message-
> From: Joerg Roedel [mailto:j...@8bytes.org]
> Sent: Thursday, January 31, 2013 3:14 AM
> To: Sethi Varun-B16395
> Cc: iommu@lists.linux-foundation.org; linux-ker...@vger.kernel.org; Joerg
> Roedel
> Subject: [PATCH 4/4] iommu: Add domain window handling functions
>
Presently SMMU registers are located in discontiguous 3 blocks. They
are interleaved by MC registers. Ideally SMMU register blocks should
be in an independent one block, but it is too late to change this H/W
design. In the future Tegra chips over some generations, it is
expected that some of regist
