Re: [PATCH RFC] KVM: Use maple tree to manage memory attributes.

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Subject: Re: [PATCH RFC] KVM: Use maple tree to manage memory attributes.
From: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Date: Thu, 22 Aug 2024 16:59:18 +0100
Cc: pbonzini@xxxxxxxxxx, chao.p.peng@xxxxxxxxxxxxxxx, seanjc@xxxxxxxxxx, Liam.Howlett@xxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, maple-tree@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20240822065544.65013-1-zhangpeng.00@bytedance.com>
References: <20240822065544.65013-1-zhangpeng.00@bytedance.com>

On Thu, Aug 22, 2024 at 02:55:44PM +0800, Peng Zhang wrote:
> +	mt_init_flags(&kvm->mem_attr_mtree, MT_FLAGS_LOCK_EXTERN);

using an external lock is a HACK.  it should go away, not be mindlessly
propagated.

References:
- [PATCH RFC] KVM: Use maple tree to manage memory attributes.
  - From: Peng Zhang

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