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Subject: Re: cvs commit: src/sys/i386/i386 pmap.c
In-Reply-To: <199805152057.NAA08998@rah.star-gate.com> from Amancio Hasty at "May 15, 98 01:57:34 pm"
To: hasty@rah.star-gate.com (Amancio Hasty)
Date: Fri, 15 May 1998 16:06:41 -0500 (EST)
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From: "John S. Dyson" <dyson@FreeBSD.ORG>
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Amancio Hasty said:
>
> Why is it tricky to enable write-combining for a vga physical memory?
> 
It is tricky because not all cards correctly specify the memory type.  Also,
on SMP, the processors have to be kept in sync, and the memory type is
in per-processor registers.

-- 
John                  | Never try to teach a pig to sing,
dyson@freebsd.org     | it just makes you look stupid,
jdyson@nc.com         | and it irritates the pig.