From: James Morse <james.morse@arm.com>
To: Xiaofei Tan <tanxiaofei@huawei.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Linuxarm <linuxarm@huawei.com>, Will Deacon <will@kernel.org>,
Dave Martin <Dave.Martin@arm.com>,
linux-arm-kernel@lists.infradead.org,
Shiju Jose <shiju.jose@huawei.com>
Subject: Re: Question about SEA handling process happened in user space
Date: Thu, 9 Apr 2020 15:28:05 +0100 [thread overview]
Message-ID: <d3a56afc-ce1a-1561-a6bb-70399bb97c50@arm.com> (raw)
In-Reply-To: <5E8EDFF6.4050903@huawei.com>
Hi Xiaofei,
On 09/04/2020 09:42, Xiaofei Tan wrote:
> James Morse wrote:
>> Do you have patches to get linux to do something useful with the processor error nodes?
>>
>> We'd need it to handle uncorrected cache errors with a physical address, as if they were
>> memory errors...
> Yes, we have some patches to do this thing inside. Then memory_failure() will be called for
> arm processor error section when physical address is available.
I look forward to reading them!
[...]
> I think this part is worth improving.
> BTW, should ARM processor record physical address when consumed an memory poison error for SEA?
> It is helpful to do error recovery. Is this mandatory for arm spec?
ERR<n>ADDR? Its not mandatory to be filled for any error. It can be some imp-def bus
address or a virtual address. It can also be left out if ERR<b>STATUS.AV says its not valid.
This is really a question for your hardware people. Does your implementation always give a
physical-address for a synchronous external abort?
Thanks,
James
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next prev parent reply other threads:[~2020-04-09 14:28 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-30 13:10 Question about SEA handling process happened in user space Xiaofei Tan
2020-03-30 16:49 ` James Morse
2020-03-31 9:41 ` Xiaofei Tan
2020-03-31 17:00 ` James Morse
2020-04-01 3:49 ` Xiaofei Tan
2020-04-07 16:37 ` James Morse
2020-04-09 8:42 ` Xiaofei Tan
2020-04-09 14:28 ` James Morse [this message]
2020-04-10 2:55 ` Xiaofei Tan
2020-04-16 13:27 ` James Morse
2020-04-18 10:49 ` Xiaofei Tan
2020-04-02 6:35 ` Xiaofei Tan
2020-04-07 16:37 ` James Morse
2020-04-09 9:17 ` Xiaofei Tan
2020-04-09 14:28 ` James Morse
2020-04-10 9:43 ` Xiaofei Tan
2020-04-16 13:50 ` James Morse
2020-04-18 11:25 ` Xiaofei Tan
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