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From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
To: mingo@elte.hu
Cc: joerg.roedel@amd.com, linux-kernel@vger.kernel.org,
	fujita.tomonori@lab.ntt.co.jp
Subject: [PATCH 0/3] fix GART to respect device's dma_mask about virtual mappings
Date: Fri, 12 Sep 2008 19:42:32 +0900	[thread overview]
Message-ID: <1221216155-17640-1-git-send-email-fujita.tomonori@lab.ntt.co.jp> (raw)

Currently, gart IOMMU ignores device's dma_mask when it does virtual
mappings. So it could give a device a virtual address that the device
can't access to.

Some IOMMUs, in x86 IOMMUs GART and Calgary, have this issue. This
patchset fixes GART.

The first and second patches add helper functions, useful for some
IOMMUs (both are taken from POWER IOMMU code). I'll convert some
IOMMUs to use the functions after they are merged into mainline (to
avoid complicated dependence on multiple trees).

This is against tip/x86/iommu plus a patch that I sent yesterday:

http://lkml.org/lkml/2008/9/11/147.




             reply	other threads:[~2008-09-12 10:48 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-12 10:42 FUJITA Tomonori [this message]
2008-09-12 10:42 ` [PATCH 1/3] add iommu_device_max_index IOMMU helper function FUJITA Tomonori
2008-09-12 10:42   ` [PATCH 2/3] add dma_get_mask " FUJITA Tomonori
2008-09-12 10:42     ` [PATCH 3/3] x86: make GART to respect device's dma_mask about virtual mappings FUJITA Tomonori
2008-09-12 14:52       ` Joerg Roedel
2008-09-12 15:11         ` FUJITA Tomonori
2008-09-14 14:45 ` [PATCH 0/3] fix " Ingo Molnar
2008-09-16  0:54 ` Andi Kleen
2008-09-16 13:20   ` FUJITA Tomonori
2008-09-16 13:43     ` Andi Kleen
2008-09-16 17:13       ` FUJITA Tomonori
2008-09-16 17:58         ` Andi Kleen
2008-09-16 23:53           ` FUJITA Tomonori
2008-09-17  0:24             ` Andi Kleen
2008-09-17 19:20               ` FUJITA Tomonori
2008-09-18 18:20                 ` Andi Kleen
2008-09-18 22:15                   ` FUJITA Tomonori
2008-09-19  0:44                     ` Andi Kleen
2008-09-22 19:12                       ` FUJITA Tomonori
2008-09-22 20:35                         ` Andi Kleen
2008-09-23  4:02                           ` FUJITA Tomonori
2008-09-17 10:43             ` Ingo Molnar
2008-09-18 18:25               ` Andi Kleen
2008-09-16 15:52     ` Joerg Roedel
2008-09-16 16:20       ` Andi Kleen

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