Messages in this thread | | | Subject | Re: Trivial Change (E820map) : arch/i386/boot/setup.S | From | Alan Cox <> | Date | 16 Jul 2003 19:18:10 +0100 |
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On Mer, 2003-07-16 at 18:33, Romit Dasgupta wrote: > Hi, > After reading the e820 method from Ralf Brown's interrupt list( > http://www.ctyme.com/intr/rb-1741.htm) > it seems that the es register wont get thrashed. So there is no need to > repatedly execute (for getting each map entry) the following two lines > inside jmpe820: of seutp.S and thus can be moved out as below. Is there > any reason to do it inside?
Yes - BIOSes and the specification are only distant relatives. We get all sorts of fun from them - 0 sized regions, system ROM reported as RAM, E801 returns in the wrong registers and so on
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