Subject: Re: [PATCH v1 3/9] parisc: Convert DMA map_page to map_phys interface

From: Jason Gunthorpe <[email-masked]>
Date: Sun, 5 Oct 2025 20:31:33 -0300

On Sun, Oct 05, 2025 at 04:22:59PM +0300, Leon Romanovsky wrote:
> @@ -582,7 +582,7 @@ ccio_io_pdir_entry(__le64 *pdir_ptr, space_t sid, unsigned long vba,
>         ** Grab virtual index [0:11]
>         ** Deposit virt_idx bits into I/O PDIR word
>         */
> -       asm volatile ("lci %%r0(%1), %0" : "=r" (ci) : "r" (vba));
> +       asm volatile ("lci %%r0(%1), %0" : "=r" (ci) : "r" (pba));

Don't know how I missed this, but this is the virtual address for the
cache invalidate James mentioned

So the optimal is to drop the lpa() and to use phys_to_virt() to get
vba for this instruction.

Jason