Re: [Qemu-devel] [PATCH v6 13/19] cputlb: atomically update tlb fields used by tlb_reset_dirty

[Richard Henderson]

On 11/09/2016 03:57 PM, Alex Bennée wrote:
> +/* We currently can't handle more than 16 bits in the MMUIDX bitmask.
> + */
> +QEMU_BUILD_BUG_ON(NB_MMU_MODES > 16);

We already assert <= 12 in exec/cpu_ldst.h.  Although really any such assert 
belongs in exec/cpu-defs.h, where we define CPU_TLB_BITS et al.

That said, what's the technical restriction here?


r~