[Intel-gfx] [PATCH 1/2] intel: Add support for overriding the PCI ID via an environment variable
eric at anholt.net
Tue Mar 6 00:18:17 CET 2012
On Sat, 3 Mar 2012 16:22:45 +0100, Julien Cristau <jcristau at debian.org> wrote:
> On Tue, Feb 21, 2012 at 21:11:07 +0000, Chris Wilson wrote:
> > On Tue, 21 Feb 2012 12:59:37 -0800, Kenneth Graunke <kenneth at whitecape.org> wrote:
> > > @@ -1828,6 +1829,9 @@ drm_intel_gem_bo_mrb_exec2(drm_intel_bo *bo, int used,
> > > execbuf.rsvd1 = 0;
> > > execbuf.rsvd2 = 0;
> > >
> > > + if (getenv("INTEL_DEVID_OVERRIDE"))
> > > + goto skip_execution;
> > I'm not thrilled about calling getenv() for every execbuffer. And what
> > about the original execbuffer path?
> I'm not thrilled about allowing the user to modify X server behaviour
> with an env variable. This is setuid root after all. I guess this also
> applies to the existing calls to getenv in the dri driver.
Yeah, this seems roughly of the same class as the many environment
variables we've always had. I'm going to take a shot at disabling a
bunch under setuid, though.
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