Thread (97 messages) 97 messages, 6 authors, 2021-02-22

Re: [RFC PATCH v2 12/26] KVM: arm64: Introduce a Hyp buddy page allocator

From: Quentin Perret <hidden>
Date: 2021-02-04 18:26:07
Also in: kvmarm, linux-devicetree, lkml

On Thursday 04 Feb 2021 at 18:13:18 (+0000), Will Deacon wrote:
I was going from memory, but the loop in __hyp_alloc_pages() searches up to
HYP_MAX_ORDER, whereas this is _never_ going to succeed beyond some per-pool
order determined by the size of the pool. But I doubt it matters -- I
thought we did more than just check a list.
Ah, I see -- I was looking at the __hyp_attach_page() loop.

I think it's a good point, I should be able to figure out a max order
based on the size and alignment of the pool, and cache that in struct
hyp_pool to optimize cases where this is < HYP_MAX_ORDER.
Should be easy enough, I'll see what I can do in v3.

Thanks!
Quentin

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