Re: [PATCH 1/3] x86, ras: Add new infrastructure for machine check fixup tables

From: Andy Lutomirski
Date: Thu Nov 12 2015 - 15:05:04 EST

On Thu, Nov 12, 2015 at 11:44 AM, Luck, Tony <tony.luck@xxxxxxxxx> wrote:
> On Wed, Nov 11, 2015 at 08:14:56PM -0800, Andy Lutomirski wrote:
>> On 11/06/2015 12:57 PM, Tony Luck wrote:
>> >Copy the existing page fault fixup mechanisms to create a new table
>> >to be used when fixing machine checks. Note:
>> >1) At this time we only provide a macro to annotate assembly code
>> >2) We assume all fixups will in code builtin to the kernel.
>> Shouldn't the first step be to fixup failures during user memory access?
> We already have code to recover from machine checks encountered
> while the processor is executing ring3 code.

I meant failures during copy_from_user, copy_to_user, etc.

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