On Sun, Sep 21, 2003 at 10:47:57AM +0200, Egbert Eich wrote:
No, I removed it again. O_SYNC causes the memory to be mapped uncached. I had a system which crashed horribly when this flag was not set for MMIO. Now I believe the system itself was faulty. I'm still not sure if caching should be set at all for MMIO registers, however since O_SYNC is an open() syscall flag and there is no way of asking for uncached mempry mapping when doing mmap() we'd have to have two separate file handles. The affected file was os-support/linux/lnx_video.c
Thanks for the explanation. I have updated Debian's patches to use the latest version (3.67) of lnx_video.c. This fix will appear in the next release of our packages of XFree86 4.3.0.
Thanks.
Thomas
-- Thomas Winischhofer Vienna/Austria thomas AT winischhofer DOT net http://www.winischhofer.net/ twini AT xfree86 DOT org
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