linux-kernel - Re: [PATCH 0/3] arm64: kdump : take off the protection on crashkernel memory region

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]

Message-ID: <9ca6f729-989d-654a-83e6-c89d8f65c69d@huawei.com>
Date:   Sat, 25 Mar 2023 10:14:27 +0800
From:   "Leizhen (ThunderTown)" <thunder.leizhen@...wei.com>
To:     Catalin Marinas <catalin.marinas@....com>,
        Baoquan He <bhe@...hat.com>
CC:     <linux-kernel@...r.kernel.org>, <horms@...nel.org>,
        <John.p.donnelly@...cle.com>, <will@...nel.org>,
        <kexec@...ts.infradead.org>, <ardb@...nel.org>, <rppt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 0/3] arm64: kdump : take off the protection on crashkernel
 memory region



On 2023/3/25 1:11, Catalin Marinas wrote:
> On Fri, Mar 24, 2023 at 09:18:35PM +0800, Baoquan He wrote:
>> Baoquan He (3):
>>   arm64: kdump : take off the protection on crashkernel memory region
>>   arm64: kdump: do not map crashkernel region specifically
>>   arm64: kdump: defer the crashkernel reservation for platforms with no
>>     DMA memory zones
>>
>>  arch/arm64/include/asm/kexec.h    |  6 -----
>>  arch/arm64/include/asm/memory.h   |  5 ----
>>  arch/arm64/kernel/machine_kexec.c | 20 --------------
>>  arch/arm64/mm/init.c              |  6 +----
>>  arch/arm64/mm/mmu.c               | 43 -------------------------------
>>  5 files changed, 1 insertion(+), 79 deletions(-)
> 
> This series works for me and it has a negative diffstat as well (though
> I'm sure people will try to bring it back ;)).

After the write protection is removed, it is recommended that crc32 check
be added. However, it can be added later.

> 
> Acked-by: Catalin Marinas <catalin.marinas@....com>
> 
> .
> 

-- 
Regards,
  Zhen Lei