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On Wed, 15 May 2019 23:08:17 +0200 Halil Pasic <pasic at linux.ibm.com> wrote: > On Tue, 14 May 2019 10:47:34 -0400 > "Jason J. Herne" <jjherne at linux.ibm.com> wrote: > > Are we > > worried that virtio data structures are going to be a burden on the 31-bit address space? > > > > > > That is a good question I can not answer. Since it is currently at least > a page per queue (because we use dma di...

On Wed, 15 May 2019 23:08:17 +0200 Halil Pasic <pasic at linux.ibm.com> wrote: > On Tue, 14 May 2019 10:47:34 -0400 > "Jason J. Herne" <jjherne at linux.ibm.com> wrote: > > Are we > > worried that virtio data structures are going to be a burden on the 31-bit address space? > > > > > > That is a good question I can not answer. Since it is currently at least > a page per queue (because we use dma di...

...39;t see any restrictions on sharing pages above the 32-bit line. So it seems possible. I'm not sure how much more work it would be. I wonder if Halil has considered this? Are we worried that virtio data structures are going to be a burden on the 31-bit address space? -- -- Jason J. Herne (jjherne at linux.ibm.com)

On Thu, 16 May 2019 08:32:28 +0200 Cornelia Huck <cohuck at redhat.com> wrote: > On Wed, 15 May 2019 23:08:17 +0200 > Halil Pasic <pasic at linux.ibm.com> wrote: > > > On Tue, 14 May 2019 10:47:34 -0400 > > "Jason J. Herne" <jjherne at linux.ibm.com> wrote: > > > > Are we > > > worried that virtio data structures are going to be a burden on the 31-bit address space? > > > > > > > > > > That is a good question I can not answer. Since it is currently at least > >...

On Tue, 14 May 2019 10:47:34 -0400 "Jason J. Herne" <jjherne at linux.ibm.com> wrote: > On 5/13/19 5:41 AM, Cornelia Huck wrote: > > On Fri, 26 Apr 2019 20:32:41 +0200 > > Halil Pasic <pasic at linux.ibm.com> wrote: > > > >> As virtio-ccw devices are channel devices, we need to use the dma area > >> for any c...

...134,6 +182,8 @@ void __init mem_init(void) > ???? set_max_mapnr(max_low_pfn); > ???????? high_memory = (void *) __va(max_low_pfn * PAGE_SIZE); > ?+??? pv_init(); > + > ???? /* Setup guest page hinting */ > ???? cmma_init(); > ?-- 2.16.4 > > -- -- Jason J. Herne (jjherne at linux.ibm.com)

On Fri, 26 Apr 2019 20:32:41 +0200 Halil Pasic <pasic at linux.ibm.com> wrote: > As virtio-ccw devices are channel devices, we need to use the dma area > for any communication with the hypervisor. > > This patch addresses the most basic stuff (mostly what is required for > virtio-ccw), and does take care of QDIO or any devices. "does not take care of QDIO",

On Fri, 26 Apr 2019 20:32:41 +0200 Halil Pasic <pasic at linux.ibm.com> wrote: > As virtio-ccw devices are channel devices, we need to use the dma area > for any communication with the hypervisor. > > This patch addresses the most basic stuff (mostly what is required for > virtio-ccw), and does take care of QDIO or any devices. "does not take care of QDIO",

....jp> Jacob Kroon <jacob.kroon@gmail.com> James Hogan <james.hogan@imgtec.com> Jan Kiszka <jan.kiszka@siemens.com> Jani Kokkoken <jani.kokkonen@huawei.com> Jani Kokkonen <jani.kokkonen@huawei.com> Jason Baron <jbaron@redhat.com> Jason J. Herne <jjherne@us.ibm.com> Jason Wang <jasowang> Jason Wang <jasowang@redhat.com> Jean-Christophe DUBOIS <jcd@tribudubois.net> Jeff Cody <jcody@redhat.com> Jens Freimann <jfrei@linux.vnet.ibm.com> Jesse Larrew <jlarrew@linux.vnet.ibm.com> Jia Liu <proljc@gma...

....jp> Jacob Kroon <jacob.kroon@gmail.com> James Hogan <james.hogan@imgtec.com> Jan Kiszka <jan.kiszka@siemens.com> Jani Kokkoken <jani.kokkonen@huawei.com> Jani Kokkonen <jani.kokkonen@huawei.com> Jason Baron <jbaron@redhat.com> Jason J. Herne <jjherne@us.ibm.com> Jason Wang <jasowang> Jason Wang <jasowang@redhat.com> Jean-Christophe DUBOIS <jcd@tribudubois.net> Jeff Cody <jcody@redhat.com> Jens Freimann <jfrei@linux.vnet.ibm.com> Jesse Larrew <jlarrew@linux.vnet.ibm.com> Jia Liu <proljc@gma...

....jp> Jacob Kroon <jacob.kroon@gmail.com> James Hogan <james.hogan@imgtec.com> Jan Kiszka <jan.kiszka@siemens.com> Jani Kokkoken <jani.kokkonen@huawei.com> Jani Kokkonen <jani.kokkonen@huawei.com> Jason Baron <jbaron@redhat.com> Jason J. Herne <jjherne@us.ibm.com> Jason Wang <jasowang> Jason Wang <jasowang@redhat.com> Jean-Christophe DUBOIS <jcd@tribudubois.net> Jeff Cody <jcody@redhat.com> Jens Freimann <jfrei@linux.vnet.ibm.com> Jesse Larrew <jlarrew@linux.vnet.ibm.com> Jia Liu <proljc@gma...

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

Enhanced virtualization protection technology may require the use of bounce buffers for I/O. While support for this was built into the virtio core, virtio-ccw wasn't changed accordingly. Some background on technology (not part of this series) and the terminology used. * Protected Virtualization (PV): Protected Virtualization guarantees, that non-shared memory of a guest that operates in PV

...z> Jason Baron <jbaron@redhat.com> Jason Cooper <jason@lakedaemon.net> Jason Fan <jcfan@qca.qualcomm.com> Jason Gerecke <killertofu@gmail.com> Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Jason J. Herne <hernejj@gmail.com> Jason J. herne <jjherne@us.ibm.com> Jason Jin <Jason.jin@freescale.com> Jason Liu <r64343@freescale.com> Jason Plum <max@warheads.net> Jason Tibbitts <tibbs@math.uh.edu> Jason Wang <jasowang@redhat.com> Jason Wessel <jason.wessel@windriver.com> Jason Wu <huanyu@xilin...

...z> Jason Baron <jbaron@redhat.com> Jason Cooper <jason@lakedaemon.net> Jason Fan <jcfan@qca.qualcomm.com> Jason Gerecke <killertofu@gmail.com> Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Jason J. Herne <hernejj@gmail.com> Jason J. herne <jjherne@us.ibm.com> Jason Jin <Jason.jin@freescale.com> Jason Liu <r64343@freescale.com> Jason Plum <max@warheads.net> Jason Tibbitts <tibbs@math.uh.edu> Jason Wang <jasowang@redhat.com> Jason Wessel <jason.wessel@windriver.com> Jason Wu <huanyu@xilin...

...z> Jason Baron <jbaron@redhat.com> Jason Cooper <jason@lakedaemon.net> Jason Fan <jcfan@qca.qualcomm.com> Jason Gerecke <killertofu@gmail.com> Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Jason J. Herne <hernejj@gmail.com> Jason J. herne <jjherne@us.ibm.com> Jason Jin <Jason.jin@freescale.com> Jason Liu <r64343@freescale.com> Jason Plum <max@warheads.net> Jason Tibbitts <tibbs@math.uh.edu> Jason Wang <jasowang@redhat.com> Jason Wessel <jason.wessel@windriver.com> Jason Wu <huanyu@xilin...

...er <jason@lakedaemon.net> Jason Cooper <jason@lakedaemon.net> #for kirkwood Jason Fan <jcfan@qca.qualcomm.com> Jason Gerecke <killertofu@gmail.com> Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Jason J. Herne <hernejj@gmail.com> Jason J. herne <jjherne@us.ibm.com> Jason Jin <Jason.jin@freescale.com> Jason Liu <r64343@freescale.com> Jason Low <jason.low2@hp.com> Jason Plum <max@warheads.net> Jason Tibbitts <tibbs@math.uh.edu> Jason Wang <jasowang@redhat.com> Jason Wessel <jason.wessel@windriv...

...er <jason@lakedaemon.net> Jason Cooper <jason@lakedaemon.net> #for kirkwood Jason Fan <jcfan@qca.qualcomm.com> Jason Gerecke <killertofu@gmail.com> Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Jason J. Herne <hernejj@gmail.com> Jason J. herne <jjherne@us.ibm.com> Jason Jin <Jason.jin@freescale.com> Jason Liu <r64343@freescale.com> Jason Low <jason.low2@hp.com> Jason Plum <max@warheads.net> Jason Tibbitts <tibbs@math.uh.edu> Jason Wang <jasowang@redhat.com> Jason Wessel <jason.wessel@windriv...

...t;jason@lakedaemon.net> #for kirkwood Jason Fan <jcfan@qca.qualcomm.com> Jason Gerecke <killertofu@gmail.com> Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Jason Hrycay <jason.hrycay@motorola.com> Jason J. Herne <hernejj@gmail.com> Jason J. herne <jjherne@us.ibm.com> Jason Jin <Jason.jin@freescale.com> Jason Liu <r64343@freescale.com> Jason Low <jason.low2@hp.com> Jason Plum <max@warheads.net> Jason Tibbitts <tibbs@math.uh.edu> Jason Wang <jasowang@redhat.com> Jason Wessel <jason.wessel@windriv...

...t;jason@lakedaemon.net> #for kirkwood Jason Fan <jcfan@qca.qualcomm.com> Jason Gerecke <killertofu@gmail.com> Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Jason Hrycay <jason.hrycay@motorola.com> Jason J. Herne <hernejj@gmail.com> Jason J. herne <jjherne@us.ibm.com> Jason Jin <Jason.jin@freescale.com> Jason Liu <r64343@freescale.com> Jason Low <jason.low2@hp.com> Jason Plum <max@warheads.net> Jason Tibbitts <tibbs@math.uh.edu> Jason Wang <jasowang@redhat.com> Jason Wessel <jason.wessel@windriv...