Messages in this thread | | | Subject | Re: [RFC PATCH 0/3] Allocate memmap from hotadded memory (per device) | From | David Hildenbrand <> | Date | Tue, 27 Oct 2020 16:44:33 +0100 |
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On 27.10.20 16:40, Oscar Salvador wrote: > On Thu, Oct 22, 2020 at 03:01:44PM +0200, David Hildenbrand wrote: >>> This does not go without saying that the patchset is not 100% complete. >>> It is missing: >>> >>> - a way to disable memmap_on_memory (either sysfs or boot_time cmd) >>> - atm, arch_add_memory for s390 screams if an altmap is passed. >>> I am still thinking of a way to nicely drop handle that. >>> Maybe a function in s390 that sets memmap_on_memory false and >>> stuff that check in support_memmap_on_memory function. >> >> Or simply implement altmap support ... shouldn't be too hard :) > > Yeah, I guess so, but first I would like to have everything else settled. > So, gentle ping :-) >
I'm planning on looking into patch #2/3 later this or next week (this week is open source summit / KVM Forum).
One thing to look into right now is how to make this fly this with vmemmap optimizations for hugetlb pages.
https://lkml.kernel.org/r/20201026145114.59424-1-songmuchun@bytedance.com
-- Thanks,
David / dhildenb
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