linux-kernel - Re: [PATCH v4 0/3] arm64: support page mapping percpu first chunk allocator

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Date:   Fri, 17 Sep 2021 08:24:48 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>
Cc:     will@...nel.org, catalin.marinas@....com, ryabinin.a.a@...il.com,
        andreyknvl@...il.com, dvyukov@...gle.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, elver@...gle.com, akpm@...ux-foundation.org,
        kasan-dev@...glegroups.com
Subject: Re: [PATCH v4 0/3] arm64: support page mapping percpu first chunk
 allocator

On Fri, Sep 17, 2021 at 09:11:38AM +0800, Kefeng Wang wrote:
> 
> On 2021/9/16 23:41, Greg KH wrote:
> > On Wed, Sep 15, 2021 at 04:33:09PM +0800, Kefeng Wang wrote:
> > > Hi Greg and Andrew， as Catalin saids，the series touches drivers/ and mm/
> > > but missing
> > > 
> > > acks from both of you，could you take a look of this patchset(patch1 change
> > > mm/vmalloc.c
> > What patchset?
> 
> [PATCH v4 1/3] vmalloc: Choose a better start address in
> vm_area_register_early()  <https://lore.kernel.org/linux-arm-kernel/20210910053354.26721-2-wangkefeng.wang@huawei.com/>
> [PATCH v4 2/3] arm64: Support page mapping percpu first chunk allocator  <https://lore.kernel.org/linux-arm-kernel/20210910053354.26721-3-wangkefeng.wang@huawei.com/>
> [PATCH v4 3/3] kasan: arm64: Fix pcpu_page_first_chunk crash with
> KASAN_VMALLOC  <https://lore.kernel.org/linux-arm-kernel/20210910053354.26721-4-wangkefeng.wang@huawei.com/>
> [PATCH v4 0/3] arm64: support page mapping percpu first chunk allocator  <https://lore.kernel.org/linux-arm-kernel/c06faf6c-3d21-04f2-6855-95c86e96cf5a@huawei.com/>
> 
> > > and patch2 changes drivers/base/arch_numa.c).
> patch2 ：
> 
> [PATCH v4 2/3] arm64: Support page mapping percpu first chunk allocator  <https://lore.kernel.org/linux-arm-kernel/20210910053354.26721-3-wangkefeng.wang@huawei.com/#r>
> 
> > that file is not really owned by anyone it seems :(
> > 
> > Can you provide a link to the real patch please?
> 
> Yes， arch_numa.c is moved into drivers/base to support riscv numa, it is
> shared by arm64/riscv,
> 
> my changes(patch2) only support NEED_PER_CPU_PAGE_FIRST_CHUNK on ARM64.
> 
> here is the link:
> 
> https://lore.kernel.org/linux-arm-kernel/20210910053354.26721-1-wangkefeng.wang@huawei.com/

Now reviewed.