Messages in this thread | | | Subject | Re: [PATCH] hugetlb: Add nohugepages parameter to prevent hugepages creation | From | "Guilherme G. Piccoli" <> | Date | Tue, 15 Oct 2019 11:09:53 -0300 |
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On 10/15/19 11:05 AM, Michal Hocko wrote: > On Tue 15-10-19 10:58:36, Guilherme G. Piccoli wrote: >> On 10/15/19 9:18 AM, Michal Hocko wrote: >>> I do agree with Qian Cai here. Kdump kernel requires a very tailored >>> environment considering it is running in a very restricted >>> configuration. The hugetlb pre-allocation sounds like a tooling problem >>> and should be fixed at that layer. >>> >> >> Hi Michal, thanks for your response. Can you suggest me a current way of >> preventing hugepages for being created, using userspace? The goal for this >> patch is exactly this, introduce such a way. > > Simply restrict the environment to not allocate any hugepages? Kdump > already controls the kernel command line and it also starts only a very > minimal subset of services. So who is allocating those hugepages? > sysctls should be already excluded by default as Qian mentioned. >
OK, thanks Michal and Qian, I'll try to make things work from kdump perspective. The trick part is exactly preventing the sysctl to get applied heh
Cheers,
Guilherme
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