On 10/2/19 3:18 PM, Kirill A. Shutemov wrote:
On Wed, Oct 02, 2019 at 11:21:01AM +0200, Thomas Hellström (VMware) wrote:
On 9/26/19 10:16 PM, Linus Torvalds wrote:
On Thu, Sep 26, 2019 at 1:09 PM Thomas Hellström (VMware)
wrote:
That said, if people are OK with me modifying the assert in
pud_
On Wed, Oct 02, 2019 at 11:21:01AM +0200, Thomas Hellström (VMware) wrote:
> On 9/26/19 10:16 PM, Linus Torvalds wrote:
> > On Thu, Sep 26, 2019 at 1:09 PM Thomas Hellström (VMware)
> > wrote:
> > > That said, if people are OK with me modifying the assert in
> > > pud_trans_huge_lock() and make __
On 9/26/19 10:16 PM, Linus Torvalds wrote:
On Thu, Sep 26, 2019 at 1:09 PM Thomas Hellström (VMware)
wrote:
That said, if people are OK with me modifying the assert in
pud_trans_huge_lock() and make __walk_page_range non-static, it should
probably be possible to make it work, yes.
I don't thin
On 9/30/19 7:12 PM, Linus Torvalds wrote:
On Mon, Sep 30, 2019 at 6:04 AM Kirill A. Shutemov wrote:
Have you seen page_vma_mapped_walk()? I made it specifically for rmap code
to cover cases when a THP is mapped with PTEs. To me it's not a big
stretch to make it cover multiple pages too.
I agre
On Mon, Sep 30, 2019 at 6:04 AM Kirill A. Shutemov wrote:
>
> Have you seen page_vma_mapped_walk()? I made it specifically for rmap code
> to cover cases when a THP is mapped with PTEs. To me it's not a big
> stretch to make it cover multiple pages too.
I agree that is closer, but it does make fo
On Fri, Sep 27, 2019 at 09:39:48AM -0700, Linus Torvalds wrote:
> On Fri, Sep 27, 2019 at 5:17 AM Kirill A. Shutemov
> wrote:
> >
> > > Call it "walk_page_mapping()". And talk extensively about how the
> > > locking differs a lot from the usual "walk_page_vma()" things.
> >
> > Walking mappings o
On Fri, Sep 27, 2019 at 5:17 AM Kirill A. Shutemov wrote:
>
> > Call it "walk_page_mapping()". And talk extensively about how the
> > locking differs a lot from the usual "walk_page_vma()" things.
>
> Walking mappings of a page is what rmap does. This code thas to be
> integrated there.
Well, tha
On Thu, Sep 26, 2019 at 03:20:42PM -0700, Linus Torvalds wrote:
> On Thu, Sep 26, 2019 at 1:55 PM Thomas Hellström (VMware)
> wrote:
> >
> > Well, we're working on supporting huge puds and pmds in the graphics
> > VMAs, although in the write-notify cases we're looking at here, we would
> > probabl
On Thu, Sep 26, 2019 at 01:16:55PM -0700, Linus Torvalds wrote:
> On Thu, Sep 26, 2019 at 1:09 PM Thomas Hellström (VMware)
> wrote:
> >
> > That said, if people are OK with me modifying the assert in
> > pud_trans_huge_lock() and make __walk_page_range non-static, it should
> > probably be possib
On 9/27/19 7:55 AM, Thomas Hellström (VMware) wrote:
On 9/27/19 12:20 AM, Linus Torvalds wrote:
On Thu, Sep 26, 2019 at 1:55 PM Thomas Hellström (VMware)
wrote:
Well, we're working on supporting huge puds and pmds in the graphics
VMAs, although in the write-notify cases we're looking at here,
On 9/27/19 12:20 AM, Linus Torvalds wrote:
On Thu, Sep 26, 2019 at 1:55 PM Thomas Hellström (VMware)
wrote:
Well, we're working on supporting huge puds and pmds in the graphics
VMAs, although in the write-notify cases we're looking at here, we would
probably want to split them down to PTE level
On Thu, Sep 26, 2019 at 1:55 PM Thomas Hellström (VMware)
wrote:
>
> Well, we're working on supporting huge puds and pmds in the graphics
> VMAs, although in the write-notify cases we're looking at here, we would
> probably want to split them down to PTE level.
Well, that's what the existing walk
On 9/26/19 10:16 PM, Linus Torvalds wrote:
On Thu, Sep 26, 2019 at 1:09 PM Thomas Hellström (VMware)
wrote:
That said, if people are OK with me modifying the assert in
pud_trans_huge_lock() and make __walk_page_range non-static, it should
probably be possible to make it work, yes.
I don't thin
On Thu, Sep 26, 2019 at 1:09 PM Thomas Hellström (VMware)
wrote:
>
> That said, if people are OK with me modifying the assert in
> pud_trans_huge_lock() and make __walk_page_range non-static, it should
> probably be possible to make it work, yes.
I don't think you need to modify that assert at al
Hi,
On 9/26/19 9:19 PM, Linus Torvalds wrote:
On Thu, Sep 26, 2019 at 5:03 AM Thomas Hellström (VMware)
wrote:
I wonder if I can get an ack from an mm maintainer to merge this through
DRM along with the vmwgfx patches? Andrew? Matthew?
It would have helped to actually point to the patch itsel
On Thu, Sep 26, 2019 at 5:03 AM Thomas Hellström (VMware)
wrote:
>
> I wonder if I can get an ack from an mm maintainer to merge this through
> DRM along with the vmwgfx patches? Andrew? Matthew?
It would have helped to actually point to the patch itself, instead of
just quoting the commit messag
On 9/26/19 1:55 PM, Thomas Hellström (VMware) wrote:
From: Thomas Hellstrom
Add two utilities to a) write-protect and b) clean all ptes pointing into
a range of an address space.
The utilities are intended to aid in tracking dirty pages (either
driver-allocated system memory or pci device memor
From: Thomas Hellstrom
Add two utilities to a) write-protect and b) clean all ptes pointing into
a range of an address space.
The utilities are intended to aid in tracking dirty pages (either
driver-allocated system memory or pci device memory).
The write-protect utility should be used in conjunc
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