Messages in this thread | | | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] Use correct x86 reboot vector | Date | 11 May 2003 18:07:54 -0700 |
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Followup to: <20030511190023.GC9173@waste.org> By author: Matt Mackall <mpm@selenic.com> In newsgroup: linux.dev.kernel > > There's a missing piece of behavior here that's probably fatal. > Namely, the next time the CS descriptor is loaded, even with the same > value, the high bits are lost. So, for example, if you're running BIOS > out of ROM, decompressing it into the top of 20-bit address space, > then long jumping to your uncompressed code, you don't want to find > yourself back in ROM. >
Nope, that's *exactly* the desired behaviour.
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