Displaying 5 results from an estimated 5 matches for "dmirror_device_is_min".
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dmirror_device_is_mine
2020 Mar 17
4
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
On 3/17/20 5:59 AM, Christoph Hellwig wrote:
> On Tue, Mar 17, 2020 at 09:47:55AM -0300, Jason Gunthorpe wrote:
>> I've been using v7 of Ralph's tester and it is working well - it has
>> DEVICE_PRIVATE support so I think it can test this flow too. Ralph are
>> you able?
>>
>> This hunk seems trivial enough to me, can we include it now?
>
> I can send
2020 Mar 19
0
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
...mirror_device *dmirror_page_to_device(struct page *page)
> +
> +{
> + struct dmirror_chunk *devmem;
> +
> + devmem = container_of(page->pgmap, struct dmirror_chunk, pagemap);
> + return devmem->mdevice;
> +}
extra devmem var is not really needed
> +
> +static bool dmirror_device_is_mine(struct dmirror_device *mdevice,
> + struct page *page)
> +{
> + if (!is_zone_device_page(page))
> + return false;
> + return page->pgmap->ops == &dmirror_devmem_ops &&
> + dmirror_page_to_device(page) == mdevice;
> +}
Use new owner stuff, right? Actu...
2020 Mar 19
2
[PATCH 3/4] mm: simplify device private page handling in hmm_range_fault
...r_of(page->pgmap, struct dmirror_chunk, pagemap);
>> + return devmem->mdevice;
>> +}
>
> extra devmem var is not really needed
I'll change this to:
return container_of(page->pgmap, struct dmirror_chunk,
pagemap)->mdevice;
>> +
>> +static bool dmirror_device_is_mine(struct dmirror_device *mdevice,
>> + struct page *page)
>> +{
>> + if (!is_zone_device_page(page))
>> + return false;
>> + return page->pgmap->ops == &dmirror_devmem_ops &&
>> + dmirror_page_to_device(page) == mdevice;
>> +}
>...
2019 Sep 11
6
[PATCH 0/4] HMM tests and minor fixes
These changes are based on Jason's latest hmm branch.
Patch 1 was previously posted here [1] but was dropped from the orginal
series. Hopefully, the tests will reduce concerns about edge conditions.
I'm sure more tests could be usefully added but I thought this was a good
starting point.
[1] https://lore.kernel.org/linux-mm/20190726005650.2566-6-rcampbell at nvidia.com/
Ralph Campbell
2020 Jan 13
9
[PATCH v6 0/6] mm/hmm/test: add self tests for HMM
This series adds new functions to the mmu interval notifier API to
allow device drivers with MMUs to dynamically mirror a process' page
tables based on device faults and invalidation callbacks. The Nouveau
driver is updated to use the extended API and a set of stand alone self
tests is added to help validate and maintain correctness.
The patches are based on linux-5.5.0-rc6 and are for