linux-kernel - Re: [PATCH -next v3 0/3] riscv: Fix two vdso issue

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Date:   Wed, 29 Sep 2021 18:12:38 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     Tong Tiangen <tongtiangen@...wei.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>,
        "Palmer Dabbelt" <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>, <abdulras@...gle.com>
CC:     <linux-riscv@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next v3 0/3] riscv: Fix two vdso issue

Hi Palmer, could this patchset be merged into v5.15, it fixes the
serious problems about the basic time api.

Sergey[1] does meet same issue too. Thanks.

[1] 
https://patchwork.kernel.org/project/linux-riscv/patch/20210829094708.169037-1-cerg2010cerg2010@mail.ru/

On 2021/9/1 10:46, Tong Tiangen wrote:
> v3->v2:
>    Adapt to the latest code.
> 
> v2->v1:
>    Add patch "Refactor asm/vdso.h" to avoid vdso.lds syntax error if
>    CONFIG_GENERIC_TIME_VSYSCALL=n.
> 
> 1) Move vdso data page up front and introduce enum vvar_pages, This makes it
> easier to introduce new feature TIME_NS.
> 
> 2) In arch_setup_additional_pages(), make Wait for the lock in the killable mode
> and return with EINTR if the task got killed while waiting.

Reviewed-by: Kefeng Wang <wangkefeng.wang@...wei.com>