On Thu 13-07-17 08:53:52, Benjamin Herrenschmidt wrote:
> On Wed, 2017-07-12 at 09:23 +0200, Michal Hocko wrote:
> >
> > >
> > > Ideally the MMU looks at the PTE for keys, in order to enforce
> > > protection. This is the case with x86 and is the case with power9 Radix
> > > page table. Hence
On Wed, 2017-07-12 at 09:23 +0200, Michal Hocko wrote:
>
> >
> > Ideally the MMU looks at the PTE for keys, in order to enforce
> > protection. This is the case with x86 and is the case with power9 Radix
> > page table. Hence the keys have to be programmed into the PTE.
>
> But x86 doesn't
On Wed 12-07-17 09:23:37, Michal Hocko wrote:
> On Tue 11-07-17 12:32:57, Ram Pai wrote:
[...]
> > Ideally the MMU looks at the PTE for keys, in order to enforce
> > protection. This is the case with x86 and is the case with power9 Radix
> > page table. Hence the keys have to be programmed into
On Tue 11-07-17 12:32:57, Ram Pai wrote:
> On Tue, Jul 11, 2017 at 04:52:46PM +0200, Michal Hocko wrote:
> > On Wed 05-07-17 14:21:37, Ram Pai wrote:
> > > Memory protection keys enable applications to protect its
> > > address space from inadvertent access or corruption from
> > > itself.
> > >
On Tue, 2017-07-11 at 12:32 -0700, Ram Pai wrote:
> Ideally the MMU looks at the PTE for keys, in order to enforce
> protection. This is the case with x86 and is the case with power9 Radix
> page table. Hence the keys have to be programmed into the PTE.
POWER9 radix doesn't currently support
On Tue, Jul 11, 2017 at 04:52:46PM +0200, Michal Hocko wrote:
> On Wed 05-07-17 14:21:37, Ram Pai wrote:
> > Memory protection keys enable applications to protect its
> > address space from inadvertent access or corruption from
> > itself.
> >
> > The overall idea:
> >
> > A process allocates a
On Wed 05-07-17 14:21:37, Ram Pai wrote:
> Memory protection keys enable applications to protect its
> address space from inadvertent access or corruption from
> itself.
>
> The overall idea:
>
> A process allocates a key and associates it with
> an address range withinits address
On Sun, Jul 09, 2017 at 11:05:44PM -0700, Ram Pai wrote:
> On Mon, Jul 10, 2017 at 11:13:23AM +0530, Anshuman Khandual wrote:
> > On 07/06/2017 02:51 AM, Ram Pai wrote:
.
>
> > do you have data points to show the difference in
> > performance between this version and the last one where
> > we
On Mon, Jul 10, 2017 at 11:13:23AM +0530, Anshuman Khandual wrote:
> On 07/06/2017 02:51 AM, Ram Pai wrote:
> > Memory protection keys enable applications to protect its
> > address space from inadvertent access or corruption from
> > itself.
> >
> > The overall idea:
> >
> > A process
On 07/06/2017 02:51 AM, Ram Pai wrote:
> Memory protection keys enable applications to protect its
> address space from inadvertent access or corruption from
> itself.
>
> The overall idea:
>
> A process allocates a key and associates it with
> an address range withinits address
Memory protection keys enable applications to protect its
address space from inadvertent access or corruption from
itself.
The overall idea:
A process allocates a key and associates it with
an address range withinits address space.
The process then can dynamically set
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