brk patches..

[Yinghai Lu]

Yinghai Lu wrote:
> wonder if boot loader check uncompress size aka vmlinux size in bzImage
> before it find one good position for bzImage...?
> 

Jeremy's brk patches may break:
1. kexec load 64bit vmlinux on some ram that near the memory hole etc.
blindly to use ram after _end may have some problem
2. coreboot aka linux is using elf (by mkelfImage : vmlinux + initrd), initrd became one section after _end...
could cause initrd get overwrite... by extend _brk

YH
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