Andi Kleen wrote:
Avi Kivity writes:
pte notifiers are different from paravirt_ops: they extend the normal
page tables rather than replace them; and they provide high-level information
such as the vma and the virtual address for the driver to use.
Sounds like a locking horror to me.
Avi Kivity writes:
>
> pte notifiers are different from paravirt_ops: they extend the normal
> page tables rather than replace them; and they provide high-level information
> such as the vma and the virtual address for the driver to use.
Sounds like a locking horror to me. To do anything with p
[ugh, what happened to the cc-list?]
Andi Kleen wrote:
Avi Kivity writes:
pte notifiers are different from paravirt_ops: they extend the normal
page tables rather than replace them; and they provide high-level information
such as the vma and the virtual address for the driver to use.
Avi Kivity writes:
>
> pte notifiers are different from paravirt_ops: they extend the normal
> page tables rather than replace them; and they provide high-level information
> such as the vma and the virtual address for the driver to use.
Sounds like a locking horror to me. To do anything with
Avi Kivity wrote:
> It is, but the hooks are in much the same places. It could be argued
> that you'd embed pte notifiers in paravirt_ops for a host kernel, but
> that's not doable because pte notifiers use higher-level data
> strutures (like vmas).
Also, I wouldn't like to preclude the possibili
Shaohua Li wrote:
On Wed, 2007-09-05 at 22:32 +0300, Avi Kivity wrote:
[resend due to bad alias expansion resulting in some recipients
being bogus]
Some hardware and software systems maintain page tables outside the normal
Linux page tables, which reference userspace memory. This includes
On Wed, 2007-09-05 at 22:32 +0300, Avi Kivity wrote:
> [resend due to bad alias expansion resulting in some recipients
> being bogus]
>
> Some hardware and software systems maintain page tables outside the normal
> Linux page tables, which reference userspace memory. This includes
> Infiniband,
[resend due to broken cc list in my original post]
Jack Steiner wrote:
On Wed, Sep 05, 2007 at 07:38:48PM +0300, Avi Kivity wrote:
Some hardware and software systems maintain page tables outside the normal
Linux page tables, which reference userspace memory. This includes
Infiniband, other
Rik van Riel wrote:
I imagine that many of the paravirt_ops mmu hooks will need to be
exposed as pte notifiers. This can't be done as part of the
paravirt_ops code due to the need to pass high level data structures,
though.
Wait, I thought that paravirt_ops was all on the side of the
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