Messages in this thread |  | | Date | Tue, 08 Jan 2013 15:17:46 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH v7 00/27] x86, boot, 64bit: Add support for loading ramdisk and bzImage above 4G |
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On 01/08/2013 01:19 PM, Borislav Petkov wrote: > On Tue, Jan 08, 2013 at 01:15:41PM -0800, H. Peter Anvin wrote: >> Yes, but why bother... > > I suspected something like that to be the reason after reading into that > section of the APM of how one needs to jump through hoops to do one > lousy far jump. >
The only thing that started this was that I got tempted into a microoptimization that happens to be valid and documented on Intel, but not AMD. Given that it doesn't actually work lretq is probably the least insane option.
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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