3 ms·
There's a huge difference. The network card does not need unrestricted access to the entire system.
by perryizgr8 5y ago
There's a huge difference. The network card does not need unrestricted access to the entire system.
- blibble 5y agoit has it because the code running from its ROM is running in ring0 exactly the same as the UEFI
- p_l 5y agoThere's less unrestricted access with UEFI than with old-fashioned option rom, especially with how you can 1) prevent loading of an option rom by banning its signature 2) register override for the device. Also, now there's much less code in option rom, leading to much more coherent system. Yes, it is easier to attack, but so is any system where you can expect a standard ABI&API vs. one where you need to randomly poke things.
- ikiris 5y agoYou do know how DMA works right?