> From: Adam Jackson <[email protected]> > Date: Fri, 30 Apr 2010 17:37:32 -0400 > > - backend-x86emu.c looks like it loses the feature of mapping the 1M > arena wherever the kernel pleases, and instead reverts to mapping it at > the 0 page. This is a security bug on arches where kernel virtual > addresses equal user virtual addresses (which includes x86 and amd64).
And for this reason, The OpenBSD kernel will actually refuse to map a page at virtual address zero. And I believe the same is true on Linux if you;re using a security conscious distro. _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
