Messages in this thread | | | Date | Fri, 21 Dec 2012 21:11:57 -0800 | Subject | Re: [PATCH v7 24/27] x86: Add swiotlb force off support | From | Yinghai Lu <> |
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On Fri, Dec 21, 2012 at 7:25 PM, H. Peter Anvin <hpa@zytor.com> wrote: > On 12/21/2012 07:23 PM, Eric W. Biederman wrote: >> >> In this case YH has been working on the case of loading a kernel >> completely above 4G, and apparently he has also been testing the case of >> running a kernel with no memory below 4G. >> > > It is worth noting that we cannot run with *no* memory below 4G -- it is > not possible to run SMP at least without some memory below the 1M mark.
yes need keep 8k or so for trampoline.
but kdump only use one CPU.
Yinghai
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