Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks

[Ingo Molnar]

* Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote:

> I still think it would be better if you get rid of BIT(63) and use a
> pair of landing pads, though.  They could be as simple as:
> 
> .Lpage_fault_goes_here:
>     xorq %rax, %rax
>     jmp .Lbad
> 
> .Lmce_goes_here:
>     /* set high bit of rax or whatever */
>     /* fall through */
> 
> .Lbad:
>     /* deal with it */
> 
> That way the magic is isolated to the function that needs the magic.

Seconded - this is the usual pattern we use in all assembly functions.

Thanks,

	Ingo
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