| From | David Howells <> | Subject | Re: [PATCH 01/24] Add the ability to lock down access to the running kernel image | Date | Wed, 11 Apr 2018 18:49:05 +0100 |
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Randy Dunlap <rdunlap@infradead.org> wrote:
> > + drivers from functioning because allowing manual configuration of > > + hardware parameters is forbidden, lest a device be used to access the > > + kernel by DMA. This mostly applies to ISA devices. > > Is DMA from non-ISA devices OK, or did I miss seeing that patch?
The issue is where you can directly command a device to do DMA, possibly by using the wrong driver. Ask Alan Cox.
David
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