From mboxrd@z Thu Jan  1 00:00:00 1970
From: sdu.liu@huawei.com (Liu hua)
Date: Mon, 14 Apr 2014 20:41:34 +0800
Subject: [PATCH 2/3] ARM : kdump : add arch_crash_save_vmcoreinfo
In-Reply-To: <20140414113718.GD3530@arm.com>
References: <1395907240-13308-1-git-send-email-sdu.liu@huawei.com>
 <1395907240-13308-3-git-send-email-sdu.liu@huawei.com>
 <20140414113718.GD3530@arm.com>
Message-ID: <534BD77E.4020405@huawei.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

? 2014/4/14 19:37, Will Deacon ??:
> On Thu, Mar 27, 2014 at 08:00:39AM +0000, Liu Hua wrote:
>> For vmcore generated by LPAE enabled kernel, user space
>> utility such as crash needs additional infomation to
>> parse.
>>
>> So this patch add arch_crash_save_vmcoreinfo as what PAE enabled
>> i386 linux does.
> 
> Looks sensible to me:
> 
>   Reviewed-by: Will Deacon <will.deacon@arm.com>
> 
> Will

Hi Will,

Thanks to you reply. How about the first one of the patch
series named "[PATCH 1/3] ARM : kdump : Add LPAE support".

Now the ARM linux will simply return error when parse an
LPAE enabled kernel, becausethe commit 4b3bf7ae provide
zero vmcore_elf64_check_arch(). So if we want parse LPAE
enabled kernel, we need that one.

Thanks,
Liu Hua
> 
>> Signed-off-by: Liu Hua <sdu.liu@huawei.com>
>> To: Russell King <linux@arm.linux.org.uk>
>> Cc: Stephen Warren <swarren@nvidia.com> 
>> Cc: Will Deacon <will.deacon@arm.com>
>> Cc: Vijaya Kumar K <vijay.kilari@gmail.com>
>> Cc: <linux-arm-kernel@lists.infradead.org>
>> Cc: <linux-kernel@vger.kernel.org>
>> Cc: <kexec@lists.infradead.org>
>> ---
>>  arch/arm/kernel/machine_kexec.c | 7 +++++++
>>  1 file changed, 7 insertions(+)
>>
>> diff --git a/arch/arm/kernel/machine_kexec.c b/arch/arm/kernel/machine_kexec.c
>> index f0d180d..8cf0996 100644
>> --- a/arch/arm/kernel/machine_kexec.c
>> +++ b/arch/arm/kernel/machine_kexec.c
>> @@ -184,3 +184,10 @@ void machine_kexec(struct kimage *image)
>>  
>>  	soft_restart(reboot_entry_phys);
>>  }
>> +
>> +void arch_crash_save_vmcoreinfo(void)
>> +{
>> +#ifdef CONFIG_ARM_LPAE
>> +	VMCOREINFO_CONFIG(ARM_LPAE);
>> +#endif
>> +}
>> -- 
>> 1.9.0
>>
>>
> 
> .
>