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SubjectRe: [PATCH v2] Do not reserve crashkernel high memory if crashkernel low memory reserving failed
On 07/21/15 at 04:23pm, Dave Young wrote:
> > I think so. the reason why ,low is introduced is swiotlb or pci device
> > need low memory when crashkernel is reserved above 4G. Low memory is
> > necessary when ,high is specified unless user can make sure their
> > machines don't need low memory and specify crashkernel=0,low explictly.
>
> I think forcing user to provide crashkernel=0,low even they do not need
> is bad, IMHO one should provided crashkernel value they really need..

Maybe system which don't need low memory is rare, only for testing?



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