[PATCH] [v1] arch: arm: configs: gxp_defconfig

[Verdun, Jean-Marie]

Hi,

>    Unfortunately that is not possible at the moment, as this is a 'bool'
>    option rather than
>    a 'tristate'. I don't know if it might be possible to change that, but
>    this is probably
>    done for a good reason.

You are right.

>    I think it should be possible to detect this erratum at runtime, especially now
>    that we understand what the hardware issue is.

>    We should probably add a CONFIG_ARM_ERRATA_764319 Kconfig
>    option that controls whether a workaround is enabled or not. One
>    way that I think this can be handled is to have a custom inline asm
>    for the trapping register CP14 accesses, using a __ex_table fixup,
>    similar to what we do for trapping user space memory access.

I like this idea. Let me try to implement it and propose something.
Thanks for the feedbacks.

>    Another option would be to detect affected systems by the CPU
>    revision register or from some DT properties.

ARM might be able to provide that. Let me ask them

vejmarie