On Thu, 14 Apr 2011 10:03:45 +0100, Chris Wilson ch...@chris-wilson.co.uk
wrote:
The docs have a dire warning not to attempt to access snooped (the old
style of cache sharing on pre-SandyBridge chipsets) pages through the GTT.
Prevent userspace from doing so by sending them a SIGBUS if they
The docs have a dire warning not to attempt to access snooped (the old
style of cache sharing on pre-SandyBridge chipsets) pages through the GTT.
Prevent userspace from doing so by sending them a SIGBUS if they try.
[Now it is possible with a bit of extra complexity to map the snooped
CPU page