Re: [PATCH v2 4/5] RISC-V: Remove redundant trampoline page table

[Christoph Hellwig]

>  
> -	/* Compute satp for kernel page tables, but don't load it yet */
> +	/* Compute satp for kernel page directory, but don't load it yet */


>  	/*
> -	 * Load trampoline page directory, which will cause us to trap to
> +	 * Load kernel page directory, which will cause us to trap to
>  	 * stvec if VA != PA, or simply fall through if VA == PA
>  	 */

If we want to nitpick comments I think this should take about the
page table root or something like that.

Otherwise the idea looks good, but I really think we should do this
before all the changes to the setup_vm code.