Messages in this thread |  | | Date | Thu, 13 Dec 2012 16:51:37 -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 4:44 PM, Yinghai Lu <yinghai@kernel.org> wrote: > 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.
also need to make sure zero page and command line get ident mapping. because arch/x86/boot/compressed/head_64.S is using them.
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