Re: [Xen-devel] [PATCH V4 00/10] xen: Switch to virtual mapped linear p2m list
On 28/11/14 10:53, Juergen Gross wrote: > Paravirtualized kernels running on Xen use a three level tree for > translation of guest specific physical addresses to machine global > addresses. This p2m tree is used for construction of page table > entries, so the p2m tree walk is performance critical. > > By using a linear virtual mapped p2m list accesses to p2m elements > can be sped up while even simplifying code. To achieve this goal > some p2m related initializations have to be performed later in the > boot process, as the final p2m list can be set up only after basic > memory management functions are available. Applied to devel/for-linus-3.19. Thanks. David ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH V4 00/10] xen: Switch to virtual mapped linear p2m list
On Mon, Dec 01, 2014 at 01:54:11PM +0100, Juergen Gross wrote: > On 12/01/2014 12:31 PM, David Vrabel wrote: > >On 28/11/14 10:53, Juergen Gross wrote: > >>Paravirtualized kernels running on Xen use a three level tree for > >>translation of guest specific physical addresses to machine global > >>addresses. This p2m tree is used for construction of page table > >>entries, so the p2m tree walk is performance critical. > >> > >>By using a linear virtual mapped p2m list accesses to p2m elements > >>can be sped up while even simplifying code. To achieve this goal > >>some p2m related initializations have to be performed later in the > >>boot process, as the final p2m list can be set up only after basic > >>memory management functions are available. > > > >What are the results of the testing I asked for? > > You asked for those replying to the patch introducing the linear > mapping. So I added the description of the tested scenarios in the > patch description of that patch. > > >If Konrad or Boris are happy with this series I think it can go into 3.19. > > Great, thanks! I am happy. > > > Juergen > ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH V4 00/10] xen: Switch to virtual mapped linear p2m list
On 12/01/2014 12:31 PM, David Vrabel wrote: On 28/11/14 10:53, Juergen Gross wrote: Paravirtualized kernels running on Xen use a three level tree for translation of guest specific physical addresses to machine global addresses. This p2m tree is used for construction of page table entries, so the p2m tree walk is performance critical. By using a linear virtual mapped p2m list accesses to p2m elements can be sped up while even simplifying code. To achieve this goal some p2m related initializations have to be performed later in the boot process, as the final p2m list can be set up only after basic memory management functions are available. What are the results of the testing I asked for? You asked for those replying to the patch introducing the linear mapping. So I added the description of the tested scenarios in the patch description of that patch. If Konrad or Boris are happy with this series I think it can go into 3.19. Great, thanks! Juergen ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH V4 00/10] xen: Switch to virtual mapped linear p2m list
On 28/11/14 10:53, Juergen Gross wrote: > Paravirtualized kernels running on Xen use a three level tree for > translation of guest specific physical addresses to machine global > addresses. This p2m tree is used for construction of page table > entries, so the p2m tree walk is performance critical. > > By using a linear virtual mapped p2m list accesses to p2m elements > can be sped up while even simplifying code. To achieve this goal > some p2m related initializations have to be performed later in the > boot process, as the final p2m list can be set up only after basic > memory management functions are available. What are the results of the testing I asked for? If Konrad or Boris are happy with this series I think it can go into 3.19. David ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
