Messages in this thread | | | Subject | Re: MTRR/DRM questions | From | (Eric W. Biederman) | Date | 17 Aug 2001 12:44:21 -0600 |
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Steve Snyder <swsnyder@home.com> writes:
> Hello. > > 1. Is there any benefit to enabling MTRR support for systems (RedHat v7.1 / > kernel v2.4.9) that will never run a graphical user interface? Usually I > read of MTRR-related matters in the context of GUI acceleration. Would my > text-only system benefit from MTRR support?
Having the kernel know how to manipulate MTRR's is useful for things like high performance I/O cards. Video is just one. However you definentily need MTRR's setting it is o.k. to do write back caching on your memory.
> 2. The kernel doc says the DRM support is avalable for the Intel 440LX > chipset, but no mention is made of the 440EX. Given that the 440EX is > kinda-sorta similar to the 440LX, can I assume that the EX chipset is also > supported?
I haven't looked. The fact that they are close probably means it is simple to convert the code if the code doesn't support your chip.
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