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

From: Anup Patel
Date: Mon Mar 25 2019 - 00:18:00 EST


On Fri, Mar 22, 2019 at 7:03 PM Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
>
> >
> > - /* 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.

Okay, I will update comments.

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

Sure, I will move it before setup_vm code so that setup_vm code is
further simplified.

Regards,
Anup