On Thu, Jun 22, 2023 at 10:25:17AM +0200, David Hildenbrand wrote:
> On 22.06.23 09:27, Vivek Kasireddy wrote:
> > The first patch ensures that the mappings needed for handling mmap
> > operation would be managed by using the pfn instead of struct page.
> > The second patch restores support for map
Hi David,
>
> On 27.06.23 08:37, Kasireddy, Vivek wrote:
> > Hi David,
> >
>
> Hi!
>
> sorry for taking a bit longer to reply lately.
No problem.
>
> [...]
>
> >>> Sounds right, maybe it needs to go back to the old GUP solution, though,
> as
> >>> mmu notifiers are also mm-based not fd-based
On Tue, Jun 27, 2023 at 12:00:38PM -0400, Peter Xu wrote:
> On Tue, Jun 27, 2023 at 12:52:34PM -0300, Jason Gunthorpe wrote:
> > On Mon, Jun 26, 2023 at 03:04:21PM -0400, Peter Xu wrote:
> > > On Mon, Jun 26, 2023 at 03:18:48PM -0300, Jason Gunthorpe wrote:
> > > > On Mon, Jun 26, 2023 at 08:14:27P
On Tue, Jun 27, 2023 at 12:52:34PM -0300, Jason Gunthorpe wrote:
> On Mon, Jun 26, 2023 at 03:04:21PM -0400, Peter Xu wrote:
> > On Mon, Jun 26, 2023 at 03:18:48PM -0300, Jason Gunthorpe wrote:
> > > On Mon, Jun 26, 2023 at 08:14:27PM +0200, David Hildenbrand wrote:
> > >
> > > > So we might have
On Mon, Jun 26, 2023 at 03:04:21PM -0400, Peter Xu wrote:
> On Mon, Jun 26, 2023 at 03:18:48PM -0300, Jason Gunthorpe wrote:
> > On Mon, Jun 26, 2023 at 08:14:27PM +0200, David Hildenbrand wrote:
> >
> > > So we might have to implement the same page migration as gup does on
> > > FOLL_LONGTERM her
On 27.06.23 08:37, Kasireddy, Vivek wrote:
Hi David,
Hi!
sorry for taking a bit longer to reply lately.
[...]
Sounds right, maybe it needs to go back to the old GUP solution, though, as
mmu notifiers are also mm-based not fd-based. Or to be explicit, I think
it'll be pin_user_pages(FOLL_LO
Hi David,
> On 26.06.23 19:52, Peter Xu wrote:
> > On Mon, Jun 26, 2023 at 07:45:37AM +, Kasireddy, Vivek wrote:
> >> Hi Peter,
> >>
> >>>
> >>> On Fri, Jun 23, 2023 at 06:13:02AM +, Kasireddy, Vivek wrote:
> Hi David,
>
> >> The first patch ensures that the mappings needed f
On Mon, Jun 26, 2023 at 03:18:48PM -0300, Jason Gunthorpe wrote:
> On Mon, Jun 26, 2023 at 08:14:27PM +0200, David Hildenbrand wrote:
>
> > So we might have to implement the same page migration as gup does on
> > FOLL_LONGTERM here ... maybe there are more such cases/drivers that actually
> > requ
On Mon, Jun 26, 2023 at 08:14:27PM +0200, David Hildenbrand wrote:
> So we might have to implement the same page migration as gup does on
> FOLL_LONGTERM here ... maybe there are more such cases/drivers that actually
> require that handling when simply taking pages out of the memfd, believing
> th
On 26.06.23 19:52, Peter Xu wrote:
On Mon, Jun 26, 2023 at 07:45:37AM +, Kasireddy, Vivek wrote:
Hi Peter,
On Fri, Jun 23, 2023 at 06:13:02AM +, Kasireddy, Vivek wrote:
Hi David,
The first patch ensures that the mappings needed for handling mmap
operation would be managed by using
On Mon, Jun 26, 2023 at 07:45:37AM +, Kasireddy, Vivek wrote:
> Hi Peter,
>
> >
> > On Fri, Jun 23, 2023 at 06:13:02AM +, Kasireddy, Vivek wrote:
> > > Hi David,
> > >
> > > > > The first patch ensures that the mappings needed for handling mmap
> > > > > operation would be managed by usin
On Fri, Jun 23, 2023 at 01:28:24PM -0400, Peter Xu wrote:
> On Fri, Jun 23, 2023 at 01:37:58PM -0300, Jason Gunthorpe wrote:
> > On Fri, Jun 23, 2023 at 12:35:45PM -0400, Peter Xu wrote:
> >
> > > It seems the previous concern on using gup was majorly fork(), if this is
> > > it:
> > >
> > > htt
Hi Peter,
>
> On Fri, Jun 23, 2023 at 06:13:02AM +, Kasireddy, Vivek wrote:
> > Hi David,
> >
> > > > The first patch ensures that the mappings needed for handling mmap
> > > > operation would be managed by using the pfn instead of struct page.
> > > > The second patch restores support for ma
On Fri, Jun 23, 2023 at 01:37:58PM -0300, Jason Gunthorpe wrote:
> On Fri, Jun 23, 2023 at 12:35:45PM -0400, Peter Xu wrote:
>
> > It seems the previous concern on using gup was majorly fork(), if this is
> > it:
> >
> > https://patchwork.freedesktop.org/patch/210992/?series=39879&rev=2#comment_
On Fri, Jun 23, 2023 at 12:35:45PM -0400, Peter Xu wrote:
> It seems the previous concern on using gup was majorly fork(), if this is it:
>
> https://patchwork.freedesktop.org/patch/210992/?series=39879&rev=2#comment_414213
Fork and GUP have been fixed since that comment anyhow there is no
longe
On Fri, Jun 23, 2023 at 06:13:02AM +, Kasireddy, Vivek wrote:
> Hi David,
>
> > > The first patch ensures that the mappings needed for handling mmap
> > > operation would be managed by using the pfn instead of struct page.
> > > The second patch restores support for mapping hugetlb pages where
On 06/22/23 10:25, David Hildenbrand wrote:
> On 22.06.23 09:27, Vivek Kasireddy wrote:
>
> There are *probably* more issues on the QEMU side when udmabuf is paired
> with things like MADV_DONTNEED/FALLOC_FL_PUNCH_HOLE used for virtio-balloon,
> virtio-mem, postcopy live migration, ... for example
Hi David,
> > The first patch ensures that the mappings needed for handling mmap
> > operation would be managed by using the pfn instead of struct page.
> > The second patch restores support for mapping hugetlb pages where
> > subpages of a hugepage are not directly used anymore (main reason
> > f
On 22.06.23 09:27, Vivek Kasireddy wrote:
The first patch ensures that the mappings needed for handling mmap
operation would be managed by using the pfn instead of struct page.
The second patch restores support for mapping hugetlb pages where
subpages of a hugepage are not directly used anymore (
The first patch ensures that the mappings needed for handling mmap
operation would be managed by using the pfn instead of struct page.
The second patch restores support for mapping hugetlb pages where
subpages of a hugepage are not directly used anymore (main reason
for revert) and instead the huge
20 matches
Mail list logo
