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

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Date:   Tue, 28 Sep 2021 10:19:56 +0800
From:   Liu Shixin <liushixin2@...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

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.
>
> Tong Tiangen (3):
>   riscv/vdso: Refactor asm/vdso.h
>   riscv/vdso: Move vdso data page up front
>   riscv/vdso: make arch_setup_additional_pages wait for mmap_sem for
>     write killable
>
>  arch/riscv/include/asm/syscall.h  |  1 +
>  arch/riscv/include/asm/vdso.h     | 15 ++++-----
>  arch/riscv/kernel/syscall_table.c |  1 -
>  arch/riscv/kernel/vdso.c          | 53 +++++++++++++++++++------------
>  arch/riscv/kernel/vdso/vdso.lds.S |  3 +-
>  5 files changed, 42 insertions(+), 31 deletions(-)
>

Test-by: Liu Shixin <liushixin2@...wei.com>