Re: [PATCH 2/2] swiotlb-xen: override common mmap and get_sgtable dma ops

[Boris Ostrovsky]

On 6/16/21 10:21 AM, Christoph Hellwig wrote:
> On Wed, Jun 16, 2021 at 10:12:55AM -0400, Boris Ostrovsky wrote:
>> I wonder now whether we could avoid code duplication between here and dma_common_mmap()/dma_common_get_sgtable() and use your helper there.
>>
>>
>> Christoph, would that work?  I.e. something like
> You should not duplicate the code at all, and just make the common
> helpers work with vmalloc addresses.


Isn't the expectation of virt_to_page() that it only works on non-vmalloc'd addresses? (This is not a rhetorical question, I actually don't know).



-boris