linux-kernel - Re: [PATCH v4 6/6] RISC-V: Free-up initrd in free_initrd

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 13 Feb 2019 09:54:15 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Mike Rapoport <rppt@...ux.ibm.com>
Cc:     Christoph Hellwig <hch@...radead.org>,
        Anup Patel <Anup.Patel@....com>,
        Palmer Dabbelt <palmer@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Atish Patra <Atish.Patra@....com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Laura Abbott <labbott@...hat.com>,
        CHANDAN VN <chandan.vn@...sung.com>,
        Will Deacon <will.deacon@....com>
Subject: Re: [PATCH v4 6/6] RISC-V: Free-up initrd in free_initrd_mem()

On Wed, Feb 13, 2019 at 09:38:36AM +0200, Mike Rapoport wrote:
> memblock_free() is has no real effect at this point, no idea why arm64
> calls it.

Looks like the call was added fairly recently by:

commit 05c58752f9dce11e396676eb731a620541590ed0
Author: CHANDAN VN <chandan.vn@...sung.com>
Date:   Mon Apr 30 09:50:18 2018 +0530

    arm64: To remove initrd reserved area entry from memblock

which claims it is to work around the initrd being displayed in
/sys/kernel/debug/memblock/reserved.

I really think we need to have common behavior there - either do this
for all architectures or none.  I've just sent a series that
consolidates all but a handful of the free_initrd_mem, so implementing
any common behavior on top of that would be good.