Messages in this thread | ![/](/images/icornerl.gif) | | Date | Tue, 15 Jul 2008 15:30:34 -0700 | From | "H. Peter Anvin" <> | Subject | Re: Regression: boot failure on AMD Elan TS-5500 |
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Sean Young wrote: > > When I bisected this issue between latest and 2.6.23 the issue seemed to be > here (round about 2.6.24-rc1). Trying to repeat the same things on latest > just led to confusion. > > So I've started from scratch with contemporary trees and found something > very different. > > 2.6.25: works > 2.6.25.5: works > 2.6.25.6: broken > 2.6.25.10: broken > 2.6.26: works > > Now the issue which was introduced in 2.6.25.6 is that a rdtsc will be done > even though this CPU does not support it (before console_init(), leaving > me with only one led for output!). This issue has been fixed in 2.6.26 but > not in 2.6.25-stable. > > The protected mode jump was just a red herring (or at least whatever was > broken back then is fixed now); 2.6.26 is working fine and that's good > enough for me. >
Okay, that is good to know. We did move the jmp in pmjump.S for 2.6.26; even if it ended up being redundant I have to say I'm happier following the documented script, especially given the apparent recent documentation change on Intel's part about this.
-hpa
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