Re: [PATCH v4] powerpc/mm: Add page soft dirty tracking

2015-12-02 Thread Aneesh Kumar K.V
Laurent Dufour writes: > User space checkpoint and restart tool (CRIU) needs the page's change > to be soft tracked. This allows to do a pre checkpoint and then dump > only touched pages. > > This is done by using a newly assigned PTE bit (_PAGE_SOFT_DIRTY) when > the page is backed in memory, an

Re: [PATCH v4] powerpc/mm: Add page soft dirty tracking

2015-12-02 Thread Laurent Dufour
On 02/12/2015 12:54, Denis Kirjanov wrote: > On 12/2/15, Laurent Dufour wrote: >> User space checkpoint and restart tool (CRIU) needs the page's change >> to be soft tracked. This allows to do a pre checkpoint and then dump >> only touched pages. >> >> This is done by using a newly assigned PTE bi

Re: [PATCH v4] powerpc/mm: Add page soft dirty tracking

2015-12-02 Thread Denis Kirjanov
On 12/2/15, Laurent Dufour wrote: > User space checkpoint and restart tool (CRIU) needs the page's change > to be soft tracked. This allows to do a pre checkpoint and then dump > only touched pages. > > This is done by using a newly assigned PTE bit (_PAGE_SOFT_DIRTY) when > the page is backed in

[PATCH v4] powerpc/mm: Add page soft dirty tracking

2015-12-02 Thread Laurent Dufour
User space checkpoint and restart tool (CRIU) needs the page's change to be soft tracked. This allows to do a pre checkpoint and then dump only touched pages. This is done by using a newly assigned PTE bit (_PAGE_SOFT_DIRTY) when the page is backed in memory, and a new _PAGE_SWP_SOFT_DIRTY bit whe