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SubjectRe: [PATCH v6 19/27] x86, boot: update comments about entries for 64bit image
On Thu, Dec 13, 2012 at 3:27 PM, H. Peter Anvin <> wrote:
> 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.

yes, in my version, only need kernel(text+data+bss+brk) get mapped.
aka the INIT_SIZE for decompressing.

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