Re: [RFC PATCH 00/12] Ion cleanup in preparation for moving out of staging

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Mar 13, 2017 at 5:09 PM, Laura Abbott <labbott@xxxxxxxxxx> wrote:
>> Hm, we might want to expose all the heaps as individual
>> /dev/ion_$heapname nodes? Should we do this from the start, since
>> we're massively revamping the uapi anyway (imo not needed, current
>> state seems to work too)?
>> -Daniel
>>
>
> I thought about that. One advantage with separate /dev/ion_$heap
> is that we don't have to worry about a limit of 32 possible
> heaps per system (32-bit heap id allocation field). But dealing
> with an ioctl seems easier than names. Userspace might be less
> likely to hardcode random id numbers vs. names as well.


other advantage, I think, is selinux (brought up elsewhere on this
thread).. heaps at known fixed PAs are useful for certain sorts of
attacks so being able to restrict access more easily seems like a good
thing

BR,
-R
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel




[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux