Messages in this thread |  | | Date | Thu, 13 Dec 2012 16:44:03 -0800 | Subject | Re: [PATCH v6 19/27] x86, boot: update comments about entries for 64bit image | From | Yinghai Lu <> |
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On Thu, Dec 13, 2012 at 4:38 PM, H. Peter Anvin <hpa@zytor.com> wrote: > On 12/13/2012 04:13 PM, Yinghai Lu wrote: > > It is definitely the minmum we can rely on, and so is the minimum we should > rely on. In fact, we don't even need .bss/.brk to be mapped, but we > probably should require that as a matter of protocol.
in my version of arch/x86/kernel/head_64.S is using BRK to do ident/kernel high mapping for kernel that is above 4G. so .brk is needed.
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