Messages in this thread | | | Date | Thu, 18 Dec 2008 14:00:15 +0100 | From | Pavel Machek <> | Subject | Re: [patch 01/22] AMD IOMMU: enable device isolation per default |
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On Tue 2008-12-16 16:03:53, Greg KH wrote: > 2.6.27-stable review patch. If anyone has any objections, please let us know. > > ------------------ > > From: Joerg Roedel <joerg.roedel@amd.com> > > commit 3ce1f93c6d53c3f91c3846cf66b018276c8ac2e7 upstream. > > Impact: makes device isolation the default for AMD IOMMU > > Some device drivers showed double-free bugs of DMA memory while testing > them with AMD IOMMU. If all devices share the same protection domain > this can lead to data corruption and data loss. Prevent this by putting > each device into its own protection domain per default. > > Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> > Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This does not look like 'fix for a serious bug' to me. stable_kernel_rules.txt says '...not a "this could be a problem" type thing'.
Yes, maybe iommu is mature enough that we want it enabled, but...
(Or maybe Documentation/stable_kernel_rules.txt needs updating. The patch for penguin dirty feet already got in.....) Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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