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Date: Mon, 13 Jul 2026 10:28:58 -0600 (MDT)
From: Paul Walmsley <pjw@kernel.org>
To: Vivian Wang <wangruikang@iscas.ac.cn>
cc: Alexandre Ghiti <alex@ghiti.fr>, Andrew Morton <akpm@linux-foundation.org>, 
    David Hildenbrand <david@kernel.org>, 
    "Liam R. Howlett" <liam@infradead.org>, Lorenzo Stoakes <ljs@kernel.org>, 
    Michal Hocko <mhocko@suse.com>, Mike Rapoport <rppt@kernel.org>, 
    Palmer Dabbelt <palmer@dabbelt.com>, Paul Walmsley <pjw@kernel.org>, 
    Suren Baghdasaryan <surenb@google.com>, 
    Vlastimil Babka <vbabka@kernel.org>, linux-kernel@vger.kernel.org, 
    linux-mm@kvack.org, linux-riscv@lists.infradead.org, 
    Muchun Song <muchun.song@linux.dev>
Subject: Re: [PATCH v6 0/2] mm/sparse-vmemmap: flush_cache_vmap() after
 hotplugging vmemmap
In-Reply-To: <20260713-mark-after-vmemmap-populate-v6-0-b945ceba29d4@iscas.ac.cn>
Message-ID: <4bc663fc-76ae-f6a0-32e1-6f9b1610f790@kernel.org>
References: <20260713-mark-after-vmemmap-populate-v6-0-b945ceba29d4@iscas.ac.cn>
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On Mon, 13 Jul 2026, Vivian Wang wrote:

> Patch 1 is a bit of clean up that fixes the compilation error with patch
> 2, since VMEMMAP_{START,END} is not defined when MMU=n.
> 
> The mark_new_valid_map() thing doesn't do anything useful on MMU=n
> anyway, and the new_valid_maps_cpus_check code is only used on 64BIT, so
> I just made it all of it conditional on 64BIT && MMU. I hope this is
> acceptable.

Thanks, queued for v7.2-rc.


- Paul