Re: Extending boot protocol & bzImage for paravirt_ops
From: "H. Peter Anvin" <hpa@zytor.com>
Date: 2007-05-26 20:43:19
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Possibly related (same subject, not in this thread)
- 2007-06-02 · Re: Extending boot protocol & bzImage for paravirt_ops · Eric W. Biederman <hidden>
- 2007-05-25 · Extending boot protocol & bzImage for paravirt_ops · Jeremy Fitzhardinge <hidden>
Rusty Russell wrote:
quoted
+ Bit 6 (write): KEEP_SEGMENTS + Protocol: 2.07+ + - if 0, reload the segment registers in the 32bit entry point. + - if 1, do not reload the segment registers in the 32bit entry point. + Assume that %cs %ds %ss %es are all set to flat segments with + a base of 0 (or the equivalent for their environment).You also want to skip the cli: perhaps a separate flag for this is appropriate though.
Do we have *any* environment that enters the 32-bit code with interrupts enabled? I would think that is unsafe no matter how you do it. -hpa