Re: [PATCH] mips/mm: Add page soft dirty tracking

[Thomas Bogendoerfer]

On Tue, Apr 21, 2020 at 05:15:27PM +0800, Guoyun Sun wrote:
> User space checkpoint and restart tool (CRIU) needs the page's change
> to be soft tracked. This allows to do a pre checkpoint and then dump
> only touched pages.
> 
> Signed-off-by: Guoyun Sun <sunguoyun@xxxxxxxxxxx>
> ---
>  arch/mips/Kconfig                    |  1 +
>  arch/mips/include/asm/pgtable-bits.h |  8 ++++--
>  arch/mips/include/asm/pgtable.h      | 48 ++++++++++++++++++++++++++++++++++--

this breaks all 32bit builds where CPU support RIXI, because it overflows
pgtable_bits.

Thomas.

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