> On Aug 21, 2019, at 3:30 AM, Peter Zijlstra wrote:
>
> On Wed, Aug 21, 2019 at 12:10:08PM +0200, Peter Zijlstra wrote:
>> On Tue, Aug 20, 2019 at 01:23:14PM -0700, Song Liu wrote:
>
>>> host-5.2-after # grep "x pmd" /sys/kernel/debug/page_tables/dump_pid
>>>
> On Aug 23, 2019, at 5:59 PM, Thomas Gleixner wrote:
>
> On Wed, 21 Aug 2019, Thomas Gleixner wrote:
>> On Wed, 21 Aug 2019, Song Liu wrote:
On Aug 20, 2019, at 1:23 PM, Song Liu wrote:
Before 32-bit support, pti_clone_pmds() always adds PMD_SIZE to addr.
This behavior
On Wed, 21 Aug 2019, Thomas Gleixner wrote:
> On Wed, 21 Aug 2019, Song Liu wrote:
> > > On Aug 20, 2019, at 1:23 PM, Song Liu wrote:
> > >
> > > Before 32-bit support, pti_clone_pmds() always adds PMD_SIZE to addr.
> > > This behavior changes after the 32-bit support: pti_clone_pgtable()
> > >
On Wed, Aug 21, 2019 at 12:10:08PM +0200, Peter Zijlstra wrote:
> On Tue, Aug 20, 2019 at 01:23:14PM -0700, Song Liu wrote:
> > host-5.2-after # grep "x pmd" /sys/kernel/debug/page_tables/dump_pid
> > 0x0060-0x00e0 8M USR ro PSE
> > x pmd
> >
On Wed, 21 Aug 2019, Song Liu wrote:
> > On Aug 20, 2019, at 1:23 PM, Song Liu wrote:
> >
> > Before 32-bit support, pti_clone_pmds() always adds PMD_SIZE to addr.
> > This behavior changes after the 32-bit support: pti_clone_pgtable()
> > increases addr by PUD_SIZE for pud_none(*pud) case, and
On Tue, Aug 20, 2019 at 01:23:14PM -0700, Song Liu wrote:
> Before 32-bit support, pti_clone_pmds() always adds PMD_SIZE to addr.
> This behavior changes after the 32-bit support: pti_clone_pgtable()
> increases addr by PUD_SIZE for pud_none(*pud) case, and increases addr by
> PMD_SIZE for
> On Aug 20, 2019, at 1:23 PM, Song Liu wrote:
>
> Before 32-bit support, pti_clone_pmds() always adds PMD_SIZE to addr.
> This behavior changes after the 32-bit support: pti_clone_pgtable()
> increases addr by PUD_SIZE for pud_none(*pud) case, and increases addr by
> PMD_SIZE for
Before 32-bit support, pti_clone_pmds() always adds PMD_SIZE to addr.
This behavior changes after the 32-bit support: pti_clone_pgtable()
increases addr by PUD_SIZE for pud_none(*pud) case, and increases addr by
PMD_SIZE for pmd_none(*pmd) case. However, this is not accurate because
addr may not
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