Subject: Re: X failure after userland upgrade
To: Michael Lorenz <>
From: Matthias Scheler <>
List: tech-kern
Date: 10/17/2007 14:47:54
On Tue, Oct 16, 2007 at 03:32:09AM -0400, Michael Lorenz wrote:
> Turns out it is jemalloc fallout - building a libc with  
> USE_JEMALLOC=no makes X work again.
> Now what side effects of the old malloc() is X relying on?

The fact that the area between 1GB and 3GB was not used for the heap.
The X11 server manually allocated memory with mmap() in that area
to get memory below <4GB.

	Kind regards

Matthias Scheler