Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Subject: Re: [PATCH 0/3] arm64: kdump : take off the protection on crashkernel
 memory region
To:     Catalin Marinas <catalin.marinas@arm.com>,
        Baoquan He <bhe@redhat.com>
CC:     <linux-kernel@vger.kernel.org>, <horms@kernel.org>,
        <John.p.donnelly@oracle.com>, <will@kernel.org>,
        <kexec@lists.infradead.org>, <ardb@kernel.org>, <rppt@kernel.org>,
        <linux-arm-kernel@lists.infradead.org>
References: <20230324131838.409996-1-bhe@redhat.com>
 <ZB3Zx85Ajnhzq3Pt@arm.com>
From:   "Leizhen (ThunderTown)" <thunder.leizhen@huawei.com>
Message-ID: <9ca6f729-989d-654a-83e6-c89d8f65c69d@huawei.com>
Date:   Sat, 25 Mar 2023 10:14:27 +0800
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101
 Thunderbird/60.7.0
MIME-Version: 1.0
In-Reply-To: <ZB3Zx85Ajnhzq3Pt@arm.com>
Content-Type: text/plain; charset="utf-8"
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Precedence: bulk


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@arm.com>
> 
> .
> 

-- 
Regards,
  Zhen Lei