On 2015/12/17 10:53, Kamezawa Hiroyuki wrote: > On 2015/12/17 11:47, Xishi Qiu wrote: >> On 2015/12/17 9:38, Izumi, Taku wrote: >> >>> Dear Xishi, >>> >>> Sorry for late. >>> >>>> -----Original Message----- >>>> From: Xishi Qiu [mailto:qiuxi...@huawei.com] >>>> Sent: Friday, December 11, 2015 6:44 PM >>>> To: Izumi, Taku/泉 拓 >>>> Cc: Luck, Tony; linux-kernel@vger.kernel.org; linux...@kvack.org; >>>> a...@linux-foundation.org; Kamezawa, Hiroyuki/亀澤 寛 >>>> 之; m...@csn.ul.ie; Hansen, Dave; m...@codeblueprint.co.uk >>>> Subject: Re: [PATCH v3 2/2] mm: Introduce kernelcore=mirror option >>>> >>>> On 2015/12/11 13:53, Izumi, Taku wrote: >>>> >>>>> Dear Xishi, >>>>> >>>>>> Hi Taku, >>>>>> >>>>>> Whether it is possible that we rewrite the fallback function in buddy >>>>>> system >>>>>> when zone_movable and mirrored_kernelcore are both enabled? >>>>> >>>>> What does "when zone_movable and mirrored_kernelcore are both >>>>> enabled?" mean ? >>>>> >>>>> My patchset just provides a new way to create ZONE_MOVABLE. >>>>> >>>> >>>> Hi Taku, >>>> >> >> Hi Taku, >> >> We can NOT specify kernelcore= "nn[KMG]" and "mirror" at the same time. >> So when we use "mirror", in fact, the movable zone is a new zone. I think it >> is >> more appropriate with this name "mirrored zone", and also we can rewrite the >> fallback function in buddy system in this case. > > kernelcore ="mirrored zone" ?
No, it's zone_names[MAX_NR_ZONES] How about "Movable", -> "Non-mirrored"? > > BTW, let me confirm. > > ZONE_NORMAL = mirrored > ZONE_MOVABLE = not mirrored. > Yes, > so, the new zone is "not-mirrored" zone. > > Now, fallback function is > > movable -> normal -> DMA. > > As Tony requested, we may need a knob to stop a fallback in > "movable->normal", later. > If the mirrored memory is small and the other is large, I think we can both enable "non-mirrored -> normal" and "normal -> non-mirrored". Thanks, Xishi Qiu > Thanks, > -Kame > > > > > > > > . > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
