linux-kernel - Re: [RFC V2 00/12] Define coherent device memory node

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Message-Id: <1e57493b-1981-7c36-612d-3ddaf6ca88b7@linux.vnet.ibm.com>
Date:   Tue, 31 Jan 2017 11:18:49 +0530
From:   Anshuman Khandual <khandual@...ux.vnet.ibm.com>
To:     Anshuman Khandual <khandual@...ux.vnet.ibm.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc:     mhocko@...e.com, vbabka@...e.cz, mgorman@...e.de,
        minchan@...nel.org, aneesh.kumar@...ux.vnet.ibm.com,
        bsingharora@...il.com, srikar@...ux.vnet.ibm.com,
        haren@...ux.vnet.ibm.com, jglisse@...hat.com,
        dave.hansen@...el.com, dan.j.williams@...el.com
Subject: Re: [RFC V2 00/12] Define coherent device memory node

Hello Dave/Jerome/Mel,

Here is the overall layout of the functions I am trying to put together
through this patch series.

(1) Define CDM from core VM and kernel perspective

(2) Isolation/Special consideration for HugeTLB allocations

(3) Isolation/Special consideration for buddy allocations

	(a) Zonelist modification based isolation (proposed)
	(b) Cpuset modification based isolation	  (proposed)
	(c) Buddy modification based isolation	  (working)

(4) Define VMA containing CDM memory with a new flag VM_CDM

(5) Special consideration for VM_CDM marked VMAs

	(a) Special consideration for auto NUMA
	(b) Special consideration for KSM

Is there are any other area which needs to be taken care of before CDM
node can be represented completely inside the kernel ?

Regards
Anshuman