Messages in this thread | | | Subject | Re: [PATCH] mm/hugetlb: Fix build failure with HUGETLB_PAGE but not HUGEBTLBFS | From | Christophe Leroy <> | Date | Tue, 17 Mar 2020 17:47:02 +0100 |
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Le 17/03/2020 à 17:40, Mike Kravetz a écrit : > On 3/17/20 1:43 AM, Christophe Leroy wrote: >> >> >> Le 17/03/2020 à 09:25, Baoquan He a écrit : >>> On 03/17/20 at 08:04am, Christophe Leroy wrote: >>>> When CONFIG_HUGETLB_PAGE is set but not CONFIG_HUGETLBFS, the >>>> following build failure is encoutered: >>> >>> From the definition of HUGETLB_PAGE, isn't it relying on HUGETLBFS? >>> I could misunderstand the def_bool, please correct me if I am wrong. >> >> AFAIU, it means that HUGETLBFS rely on HUGETLB_PAGE, by default HUGETLB_PAGE is not selected when HUGETLBFS is not. But it is still possible for an arch to select HUGETLB_PAGE without selecting HUGETLBFS when it uses huge pages for other purpose than hugetlb file system. >> > > Hi Christophe, > > Do you actually have a use case/example of using hugetlb pages without > hugetlbfs? I can understand that there are some use cases which never > use the filesystem interface. However, hugetlb support is so intertwined > with hugetlbfs, I am thinking there would be issues trying to use them > separately. I will look into this further. >
Hi Mike,
Series https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=164620
And especially patch 39 to 41.
Thanks Christophe
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