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From: Catalin Marinas <catalin.marinas@arm.com>
To: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: will@kernel.org, ryabinin.a.a@gmail.com, andreyknvl@gmail.com,
dvyukov@google.com, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
linux-mm@kvack.org, elver@google.com
Subject: Re: [PATCH v3 2/3] arm64: Support page mapping percpu first chunk allocator
Date: Wed, 25 Aug 2021 19:08:33 +0100 [thread overview]
Message-ID: <20210825180831.GJ3420@arm.com> (raw)
In-Reply-To: <20210809093750.131091-3-wangkefeng.wang@huawei.com>
On Mon, Aug 09, 2021 at 05:37:49PM +0800, Kefeng Wang wrote:
> Percpu embedded first chunk allocator is the firstly option, but it
> could fails on ARM64, eg,
> "percpu: max_distance=0x5fcfdc640000 too large for vmalloc space 0x781fefff0000"
> "percpu: max_distance=0x600000540000 too large for vmalloc space 0x7dffb7ff0000"
> "percpu: max_distance=0x5fff9adb0000 too large for vmalloc space 0x5dffb7ff0000"
>
> then we could meet "WARNING: CPU: 15 PID: 461 at vmalloc.c:3087 pcpu_get_vm_areas+0x488/0x838",
> even the system could not boot successfully.
>
> Let's implement page mapping percpu first chunk allocator as a fallback
> to the embedding allocator to increase the robustness of the system.
>
> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
next prev parent reply other threads:[~2021-08-25 18:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-09 9:37 [PATCH v3 0/3] arm64: support " Kefeng Wang
2021-08-09 9:37 ` [PATCH v3 1/3] vmalloc: Choose a better start address in vm_area_register_early() Kefeng Wang
2021-08-25 17:59 ` Catalin Marinas
2021-08-27 8:36 ` Kefeng Wang
2021-08-09 9:37 ` [PATCH v3 2/3] arm64: Support page mapping percpu first chunk allocator Kefeng Wang
2021-08-25 18:08 ` Catalin Marinas [this message]
2021-08-09 9:37 ` [PATCH v3 3/3] kasan: arm64: Fix pcpu_page_first_chunk crash with KASAN_VMALLOC Kefeng Wang
2021-08-09 11:10 ` Kefeng Wang
2021-08-09 11:21 ` Marco Elver
2021-08-09 13:34 ` Kefeng Wang
2021-08-09 18:21 ` Andrey Konovalov
2021-08-12 6:07 ` [PATCH v3 0/3] arm64: support page mapping percpu first chunk allocator Kefeng Wang
2021-08-23 2:29 ` Kefeng Wang
2021-08-25 18:11 ` Catalin Marinas
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