linux-kernel - [PATCH -next 0/2] riscv: Fix two vdso issue

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Message-ID: <20210819030650.716478-1-tongtiangen@huawei.com>
Date:   Thu, 19 Aug 2021 03:06:48 +0000
From:   Tong Tiangen <tongtiangen@...wei.com>
To:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>,
        Albert Ou <aou@...s.berkeley.edu>
CC:     <linux-riscv@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        "Tong Tiangen" <tongtiangen@...wei.com>
Subject: [PATCH -next 0/2] riscv: Fix two vdso issue

1) Move vdso data page up front and introduce enum vvar_pages, To pave the way
for the subsequent support of TIME_NS, the support of TIME_NS will be issued
in the later patch.

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 (2):
  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  |  2 ++
 arch/riscv/include/asm/vdso.h     |  4 +--
 arch/riscv/kernel/vdso.c          | 51 ++++++++++++++++++-------------
 arch/riscv/kernel/vdso/vdso.lds.S |  3 +-
 4 files changed, 36 insertions(+), 24 deletions(-)

-- 
2.18.0.huawei.25