On Fri, Sep 25, 2020 at 6:08 PM Lyude Paul wrote:
>
> On Tue, 2020-09-22 at 17:22 -0400, Ilia Mirkin wrote:
> > On Tue, Sep 22, 2020 at 5:14 PM Lyude Paul wrote:
> > > On Tue, 2020-09-22 at 17:10 -0400, Ilia Mirkin wrote:
> > > > Can we use 6bpc on arbitrary DP monitors, or is there a capability
ZONE_DEVICE struct pages have an extra reference count that complicates the
code for put_page() and several places in the kernel that need to check the
reference count to see that a page is not being used (gup, compaction,
migration, etc.). Clean up the code so the reference count doesn't need to
Matthew Wilcox, Ira Weiny, and others have complained that ZONE_DEVICE
struct page reference counting is ugly because they are "free" when the
reference count is one instead of zero. This leads to explicit checks
for ZONE_DEVICE pages in places like put_page(), GUP, THP splitting, and
page
Hi Christoph,
On Tue, Sep 15, 2020 at 05:51:05PM +0200, Christoph Hellwig wrote:
> From: Sergey Senozhatsky
>
> The patch partially reverts some of the UAPI bits of the buffer
> cache management hints. Namely, the queue consistency (memory
> coherency) user-space hint because, as it turned out,
On Fri, Sep 25, 2020 at 12:15:37PM +0100, Robin Murphy wrote:
> On 2020-09-15 16:51, Christoph Hellwig wrote:
> [...]
>> +These APIs allow to allocate pages in the kernel direct mapping that are
>> +guaranteed to be DMA addressable. This means that unlike
>> dma_alloc_coherent,
>> +virt_to_page
There are several places where ZONE_DEVICE struct pages assume a reference
count == 1 means the page is idle and free. Instead of open coding this,
add a helper function to hide this detail.
Signed-off-by: Ralph Campbell
---
fs/dax.c| 8
fs/ext4/inode.c | 2 +-
Hi Christoph,
On Tue, Sep 15, 2020 at 05:51:21PM +0200, Christoph Hellwig wrote:
> Implement the alloc_noncoherent method to provide memory that is neither
> coherent not contiguous.
>
> Signed-off-by: Christoph Hellwig
> ---
> drivers/iommu/dma-iommu.c | 41
On Tue, 2020-09-22 at 17:22 -0400, Ilia Mirkin wrote:
> On Tue, Sep 22, 2020 at 5:14 PM Lyude Paul wrote:
> > On Tue, 2020-09-22 at 17:10 -0400, Ilia Mirkin wrote:
> > > Can we use 6bpc on arbitrary DP monitors, or is there a capability for
> > > it? Maybe only use 6bpc if display_info.bpc == 6
Hi everybody,
I think it's time to finally move our wiki from the old infrastructure
over to gitlab pages.
This comes with several benefits:
* full control through git over the ikiwiki pipeline (setup files,
plugins, system packages, ...)
* random users are able to create MRs against the wiki as
On 9/25/20 1:51 PM, Dan Williams wrote:
On Fri, Sep 25, 2020 at 1:45 PM Ralph Campbell wrote:
There are several places where ZONE_DEVICE struct pages assume a reference
count == 1 means the page is idle and free. Instead of open coding this,
add a helper function to hide this detail.
On Fri, Sep 25, 2020 at 1:45 PM Ralph Campbell wrote:
>
> There are several places where ZONE_DEVICE struct pages assume a reference
> count == 1 means the page is idle and free. Instead of open coding this,
> add a helper function to hide this detail.
>
> Signed-off-by: Ralph Campbell
> ---
>
Hi
Am 23.09.20 um 16:33 schrieb Christian König:
> Feel free to add an Acked-by: Christian König
> to all patches which I haven't explicitly reviewed.
Done, thanks.
>
> I would say we should just push this to drm-misc-next now.
It's merged now.
Best regards
Thomas
>
> Thanks for the nice
This is in dma-mapping for-next now.
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On 2020-09-15 16:51, Christoph Hellwig wrote:
[...]
+These APIs allow to allocate pages in the kernel direct mapping that are
+guaranteed to be DMA addressable. This means that unlike dma_alloc_coherent,
+virt_to_page can be called on the resulting address, and the resulting
Nit: if we
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