| Date | Thu, 13 Dec 2012 15:27:52 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH v6 19/27] x86, boot: update comments about entries for 64bit image |
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On 12/13/2012 02:02 PM, Yinghai Lu wrote: > + * If we come here from a bootloader, kernel(text+data+bss+brk), > + * ramdisk, zero_page, command line could be above 4G. > + * We depend on an identity mapped page table being provided > + * that maps our entire kernel(text+data+bss+brk), and hopefully > + * all of memory.
We should make it explicit what we depend on. We certainly *can* depend only on text+data+bss+brk ... with the dynamic page table approach we can do that, and that would be most conservative; if we depend on other things we should make that explicit, not just here but in boot.txt.
-hpa
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