Messages in this thread |  | | | Date | Mon, 23 Feb 2004 19:10:17 -0800 | | From | "H. Peter Anvin" <> | | Subject | Re: Does Flushing the Queue after PG REALLY a Necessity? |
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Coywolf Qi Hunt wrote: > > The problem is there's two jumps in the kernel. Intel's manual only asks > for "Execute a near JMP instruction". >
A far JMP is definitely sufficient, and serves to normalize EIP as well.
I have uploaded a patch which also preinitializes the GDT, which may make the VISWS code a bit less of a special case.
ftp://ftp.kernel.org/pub/linux/kernel/people/hpa/earlymem-4.diff
> If no any reason for the two jumps, the code should be fixed to remains > only ONE near jump.
Why are you so obsessed with minimality? The performance of this code matters not one bit.
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