Re: [PATCH 01/12] Security: Add CAP_COMPROMISE_KERNEL

[Matthew Garrett]

Mm. The question is whether we can reliably determine the ranges a device should be able to access without having to trust userspace (and, ideally, without having to worry about whether iommu vendors have done their job). It's pretty important for PCI passthrough, so we do need to care. 
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Matthew Garrett | matthew.garrett@xxxxxxxxxxèº{.nÇ+‰·Ÿ®‰­†+%ŠËlzwm…ébëæìr¸›zX§»®w¥Š{ayºÊÚë,j­¢f£¢·hš‹àz¹®w¥¢¸¢·¦j:+v‰¨ŠwèjØm¶Ÿÿ¾«‘êçzZ+ƒùšŽŠÝj"ú!¶iO•æ¬z·švØ^¶m§ÿðÃnÆàþY&—