Re: [RFC] virtio-net: share receive_*() and add_recvbuf_*() with virtio-vsock

2019-07-15 Thread Stefano Garzarella
On Mon, Jul 15, 2019 at 05:16:09PM +0800, Jason Wang wrote: > > > > > > > > >struct sk_buff *virtskb_receive_small(struct virtskb > > > > > > > > *vs, ...); > > > > > > > >struct sk_buff *virtskb_receive_big(struct virtskb *vs, > > > > > > > > ...); > > > > > > > >struct

[PATCH 0/2] Remove 32-bit Xen PV guest support

2019-07-15 Thread Juergen Gross
The long term plan has been to replace Xen PV guests by PVH. The first victim of that plan are now 32-bit PV guests, as those are used only rather seldom these days. Xen on x86 requires 64-bit support and with Grub2 now supporting PVH officially since version 2.04 there is no need to keep 32-bit

[PATCH 2/2] x86/paravirt: remove 32-bit support from PARAVIRT_XXL

2019-07-15 Thread Juergen Gross
The last 32-bit user of stuff under CONFIG_PARAVIRT_XXL is gone. Remove 32-bit specific parts. Signed-off-by: Juergen Gross --- arch/x86/entry/vdso/vdso32/vclock_gettime.c | 1 + arch/x86/include/asm/paravirt.h | 105

Re: [RFC] virtio-net: share receive_*() and add_recvbuf_*() with virtio-vsock

2019-07-15 Thread Jason Wang
struct sk_buff *virtskb_receive_small(struct virtskb *vs, ...); struct sk_buff *virtskb_receive_big(struct virtskb *vs, ...); struct sk_buff *virtskb_receive_mergeable(struct virtskb *vs, ...); int virtskb_add_recvbuf_small(struct virtskb*vs, ...); int

Re: [RFC] virtio-net: share receive_*() and add_recvbuf_*() with virtio-vsock

2019-07-15 Thread Stefano Garzarella
On Fri, Jul 12, 2019 at 06:14:39PM +0800, Jason Wang wrote: > > On 2019/7/12 下午6:00, Stefano Garzarella wrote: > > On Thu, Jul 11, 2019 at 03:52:21PM -0400, Michael S. Tsirkin wrote: > > > On Thu, Jul 11, 2019 at 01:41:34PM +0200, Stefano Garzarella wrote: > > > > On Thu, Jul 11, 2019 at

[PATCH AUTOSEL 4.19 079/158] vhost_net: disable zerocopy by default

2019-07-15 Thread Sasha Levin
From: Jason Wang [ Upstream commit 098eadce3c622c07b328d0a43dda379b38cf7c5e ] Vhost_net was known to suffer from HOL[1] issues which is not easy to fix. Several downstream disable the feature by default. What's more, the datapath was split and datacopy path got the support of batching and XDP

Re: [PATCH] x86/paravirt: Drop {read,write}_cr8() hooks

2019-07-15 Thread Juergen Gross
On 15.07.19 16:26, Andy Lutomirski wrote: On Mon, Jul 15, 2019 at 6:23 AM Juergen Gross wrote: On 15.07.19 15:00, Andrew Cooper wrote: There is a lot of infrastructure for functionality which is used exclusively in __{save,restore}_processor_state() on the suspend/resume path. cr8 is an

Re: [PATCH 0/2] Remove 32-bit Xen PV guest support

2019-07-15 Thread Peter Zijlstra
On Mon, Jul 15, 2019 at 01:37:37PM +0200, Juergen Gross wrote: > The long term plan has been to replace Xen PV guests by PVH. The first > victim of that plan are now 32-bit PV guests, as those are used only > rather seldom these days. Xen on x86 requires 64-bit support and with > Grub2 now

Re: [PATCH] x86/paravirt: Drop {read,write}_cr8() hooks

2019-07-15 Thread Juergen Gross
On 15.07.19 15:00, Andrew Cooper wrote: There is a lot of infrastructure for functionality which is used exclusively in __{save,restore}_processor_state() on the suspend/resume path. cr8 is an alias of APIC_TASKPRI, and APIC_TASKPRI is saved/restored independently by lapic_{suspend,resume}().

Re: [PATCH 0/2] Remove 32-bit Xen PV guest support

2019-07-15 Thread Juergen Gross
On 15.07.19 14:32, Peter Zijlstra wrote: On Mon, Jul 15, 2019 at 01:37:37PM +0200, Juergen Gross wrote: The long term plan has been to replace Xen PV guests by PVH. The first victim of that plan are now 32-bit PV guests, as those are used only rather seldom these days. Xen on x86 requires

Re: [RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted

2019-07-15 Thread Michael S. Tsirkin
On Sun, Jul 14, 2019 at 02:51:18AM -0300, Thiago Jung Bauermann wrote: > > > Michael S. Tsirkin writes: > > > On Thu, Jun 27, 2019 at 10:58:40PM -0300, Thiago Jung Bauermann wrote: > >> > >> Michael S. Tsirkin writes: > >> > >> > On Mon, Jun 03, 2019 at 10:13:59PM -0300, Thiago Jung Bauermann

Re: [PATCH] x86/paravirt: Drop {read,write}_cr8() hooks

2019-07-15 Thread Andy Lutomirski
On Mon, Jul 15, 2019 at 6:23 AM Juergen Gross wrote: > > On 15.07.19 15:00, Andrew Cooper wrote: > > There is a lot of infrastructure for functionality which is used > > exclusively in __{save,restore}_processor_state() on the suspend/resume > > path. > > > > cr8 is an alias of APIC_TASKPRI, and

[PATCH AUTOSEL 4.14 056/105] vhost_net: disable zerocopy by default

2019-07-15 Thread Sasha Levin
From: Jason Wang [ Upstream commit 098eadce3c622c07b328d0a43dda379b38cf7c5e ] Vhost_net was known to suffer from HOL[1] issues which is not easy to fix. Several downstream disable the feature by default. What's more, the datapath was split and datacopy path got the support of batching and XDP

[PATCH AUTOSEL 4.9 41/73] vhost_net: disable zerocopy by default

2019-07-15 Thread Sasha Levin
From: Jason Wang [ Upstream commit 098eadce3c622c07b328d0a43dda379b38cf7c5e ] Vhost_net was known to suffer from HOL[1] issues which is not easy to fix. Several downstream disable the feature by default. What's more, the datapath was split and datacopy path got the support of batching and XDP

[PATCH AUTOSEL 4.4 33/53] vhost_net: disable zerocopy by default

2019-07-15 Thread Sasha Levin
From: Jason Wang [ Upstream commit 098eadce3c622c07b328d0a43dda379b38cf7c5e ] Vhost_net was known to suffer from HOL[1] issues which is not easy to fix. Several downstream disable the feature by default. What's more, the datapath was split and datacopy path got the support of batching and XDP

Re: [PATCH] x86/paravirt: Drop {read,write}_cr8() hooks

2019-07-15 Thread Andrew Cooper
On 15/07/2019 15:52, Juergen Gross wrote: > On 15.07.19 16:26, Andy Lutomirski wrote: >> On Mon, Jul 15, 2019 at 6:23 AM Juergen Gross wrote: >>> >>> On 15.07.19 15:00, Andrew Cooper wrote: There is a lot of infrastructure for functionality which is used exclusively in

[PATCH v2] x86/paravirt: Drop {read,write}_cr8() hooks

2019-07-15 Thread Andrew Cooper
There is a lot of infrastructure for functionality which is used exclusively in __{save,restore}_processor_state() on the suspend/resume path. cr8 is an alias of APIC_TASKPRI, and APIC_TASKPRI is saved/restored by lapic_{suspend,resume}(). Saving and restoring cr8 independently of the rest of

[PATCH] x86/paravirt: Drop {read,write}_cr8() hooks

2019-07-15 Thread Andrew Cooper
There is a lot of infrastructure for functionality which is used exclusively in __{save,restore}_processor_state() on the suspend/resume path. cr8 is an alias of APIC_TASKPRI, and APIC_TASKPRI is saved/restored independently by lapic_{suspend,resume}(). Delete the saving and restoration of cr8,

[PATCH AUTOSEL 5.1 105/219] vhost_net: disable zerocopy by default

2019-07-15 Thread Sasha Levin
From: Jason Wang [ Upstream commit 098eadce3c622c07b328d0a43dda379b38cf7c5e ] Vhost_net was known to suffer from HOL[1] issues which is not easy to fix. Several downstream disable the feature by default. What's more, the datapath was split and datacopy path got the support of batching and XDP

[PATCH AUTOSEL 5.2 119/249] vhost_net: disable zerocopy by default

2019-07-15 Thread Sasha Levin
From: Jason Wang [ Upstream commit 098eadce3c622c07b328d0a43dda379b38cf7c5e ] Vhost_net was known to suffer from HOL[1] issues which is not easy to fix. Several downstream disable the feature by default. What's more, the datapath was split and datacopy path got the support of batching and XDP

Re: [PATCH 0/2] Remove 32-bit Xen PV guest support

2019-07-15 Thread Andi Kleen
Juergen Gross writes: > The long term plan has been to replace Xen PV guests by PVH. The first > victim of that plan are now 32-bit PV guests, as those are used only > rather seldom these days. Xen on x86 requires 64-bit support and with > Grub2 now supporting PVH officially since version 2.04

Re: [PATCH v1 09/33] drm/qxl: drop use of drmP.h

2019-07-15 Thread Sam Ravnborg
On Mon, Jul 01, 2019 at 08:38:43AM +0200, Gerd Hoffmann wrote: > On Sun, Jun 30, 2019 at 08:18:58AM +0200, Sam Ravnborg wrote: > > Drop use of the deprecated drmP.h header file. > > While touching the files divided includes in blocks, > > and when needed sort the blocks. > > Fix fallout. > > > >

Re: [PATCH v1 31/33] drm/bochs: drop use of drmP.h

2019-07-15 Thread Sam Ravnborg
On Mon, Jul 01, 2019 at 08:39:08AM +0200, Gerd Hoffmann wrote: > On Sun, Jun 30, 2019 at 08:19:20AM +0200, Sam Ravnborg wrote: > > Drop use of the deprecated drmP.h header file. > > Made bochs.h self-contained and then fixed > > fallout in remaining files. > > Several unused includes was dropped

Re: [RFC] virtio-net: share receive_*() and add_recvbuf_*() with virtio-vsock

2019-07-15 Thread Michael S. Tsirkin
On Mon, Jul 15, 2019 at 09:44:16AM +0200, Stefano Garzarella wrote: > On Fri, Jul 12, 2019 at 06:14:39PM +0800, Jason Wang wrote: > > > > On 2019/7/12 下午6:00, Stefano Garzarella wrote: > > > On Thu, Jul 11, 2019 at 03:52:21PM -0400, Michael S. Tsirkin wrote: > > > > On Thu, Jul 11, 2019 at

Re: [PATCH v2] x86/paravirt: Drop {read,write}_cr8() hooks

2019-07-15 Thread Nadav Amit via Virtualization
> On Jul 15, 2019, at 8:16 AM, Andrew Cooper wrote: > > There is a lot of infrastructure for functionality which is used > exclusively in __{save,restore}_processor_state() on the suspend/resume > path. > > cr8 is an alias of APIC_TASKPRI, and APIC_TASKPRI is saved/restored by >

Re: [PATCH 0/2] Remove 32-bit Xen PV guest support

2019-07-15 Thread Juergen Gross
On 15.07.19 19:28, Andy Lutomirski wrote: On Mon, Jul 15, 2019 at 9:34 AM Andi Kleen wrote: Juergen Gross writes: The long term plan has been to replace Xen PV guests by PVH. The first victim of that plan are now 32-bit PV guests, as those are used only rather seldom these days. Xen on x86

Re: [PATCH v1 27/33] drm/virtgpu: drop use of drmP.h

2019-07-15 Thread Sam Ravnborg
On Mon, Jul 01, 2019 at 08:38:56AM +0200, Gerd Hoffmann wrote: > On Sun, Jun 30, 2019 at 08:19:16AM +0200, Sam Ravnborg wrote: > > Drop use of the deprecated drmP.h header file. > > Fix fallout by adding missing include files. > > > > Signed-off-by: Sam Ravnborg > > Cc: David Airlie > > Cc:

Re: [Xen-devel] [PATCH 0/2] Remove 32-bit Xen PV guest support

2019-07-15 Thread Andrew Cooper
On 15/07/2019 18:28, Andy Lutomirski wrote: > On Mon, Jul 15, 2019 at 9:34 AM Andi Kleen wrote: >> Juergen Gross writes: >> >>> The long term plan has been to replace Xen PV guests by PVH. The first >>> victim of that plan are now 32-bit PV guests, as those are used only >>> rather seldom these

Re: [RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted

2019-07-15 Thread Thiago Jung Bauermann
Michael S. Tsirkin writes: > On Mon, Jul 15, 2019 at 05:29:06PM -0300, Thiago Jung Bauermann wrote: >> >> Michael S. Tsirkin writes: >> >> > On Sun, Jul 14, 2019 at 02:51:18AM -0300, Thiago Jung Bauermann wrote: >> >> >> >> >> >> Michael S. Tsirkin writes: >> >> >> >> > So this is what I

Re: [RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted

2019-07-15 Thread Michael S. Tsirkin
On Mon, Jul 15, 2019 at 07:03:03PM -0300, Thiago Jung Bauermann wrote: > > Michael S. Tsirkin writes: > > > On Mon, Jul 15, 2019 at 05:29:06PM -0300, Thiago Jung Bauermann wrote: > >> > >> Michael S. Tsirkin writes: > >> > >> > On Sun, Jul 14, 2019 at 02:51:18AM -0300, Thiago Jung Bauermann

Re: [RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted

2019-07-15 Thread Thiago Jung Bauermann
Michael S. Tsirkin writes: > On Mon, Jul 15, 2019 at 07:03:03PM -0300, Thiago Jung Bauermann wrote: >> >> Michael S. Tsirkin writes: >> >> > On Mon, Jul 15, 2019 at 05:29:06PM -0300, Thiago Jung Bauermann wrote: >> >> >> >> Michael S. Tsirkin writes: >> >> >> >> > On Sun, Jul 14, 2019 at

Re: [PATCH v2] x86/paravirt: Drop {read,write}_cr8() hooks

2019-07-15 Thread Andrew Cooper
On 15/07/2019 19:17, Nadav Amit wrote: >> On Jul 15, 2019, at 8:16 AM, Andrew Cooper wrote: >> >> There is a lot of infrastructure for functionality which is used >> exclusively in __{save,restore}_processor_state() on the suspend/resume >> path. >> >> cr8 is an alias of APIC_TASKPRI, and

Re: [RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted

2019-07-15 Thread Benjamin Herrenschmidt
On Mon, 2019-07-15 at 19:03 -0300, Thiago Jung Bauermann wrote: > > > Indeed. The idea is that QEMU can offer the flag, old guests can > > > reject > > > it (or even new guests can reject it, if they decide not to > > > convert into > > > secure VMs) and the feature negotiation will succeed with

Re: [PATCH v2] x86/paravirt: Drop {read,write}_cr8() hooks

2019-07-15 Thread Andy Lutomirski
On Mon, Jul 15, 2019 at 4:30 PM Andrew Cooper wrote: > > On 15/07/2019 19:17, Nadav Amit wrote: > >> On Jul 15, 2019, at 8:16 AM, Andrew Cooper > >> wrote: > >> > >> There is a lot of infrastructure for functionality which is used > >> exclusively in __{save,restore}_processor_state() on the

Re: [PATCH v2] x86/paravirt: Drop {read,write}_cr8() hooks

2019-07-15 Thread Nadav Amit via Virtualization
> On Jul 15, 2019, at 4:30 PM, Andrew Cooper wrote: > > On 15/07/2019 19:17, Nadav Amit wrote: >>> On Jul 15, 2019, at 8:16 AM, Andrew Cooper >>> wrote: >>> >>> There is a lot of infrastructure for functionality which is used >>> exclusively in __{save,restore}_processor_state() on the

Re: [Xen-devel] [PATCH 0/2] Remove 32-bit Xen PV guest support

2019-07-15 Thread Juergen Gross
On 15.07.19 19:39, Andrew Cooper wrote: On 15/07/2019 18:28, Andy Lutomirski wrote: On Mon, Jul 15, 2019 at 9:34 AM Andi Kleen wrote: Juergen Gross writes: The long term plan has been to replace Xen PV guests by PVH. The first victim of that plan are now 32-bit PV guests, as those are used

Re: [PATCH v2] x86/paravirt: Drop {read,write}_cr8() hooks

2019-07-15 Thread Juergen Gross
On 15.07.19 17:16, Andrew Cooper wrote: There is a lot of infrastructure for functionality which is used exclusively in __{save,restore}_processor_state() on the suspend/resume path. cr8 is an alias of APIC_TASKPRI, and APIC_TASKPRI is saved/restored by lapic_{suspend,resume}(). Saving and

Re: [RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted

2019-07-15 Thread Thiago Jung Bauermann
Michael S. Tsirkin writes: > On Sun, Jul 14, 2019 at 02:51:18AM -0300, Thiago Jung Bauermann wrote: >> >> >> Michael S. Tsirkin writes: >> >> > So this is what I would call this option: >> > >> > VIRTIO_F_ACCESS_PLATFORM_IDENTITY_ADDRESS >> > >> > and the explanation should state that all

Re: [RFC PATCH] virtio_ring: Use DMA API if guest memory is encrypted

2019-07-15 Thread Michael S. Tsirkin
On Mon, Jul 15, 2019 at 05:29:06PM -0300, Thiago Jung Bauermann wrote: > > Michael S. Tsirkin writes: > > > On Sun, Jul 14, 2019 at 02:51:18AM -0300, Thiago Jung Bauermann wrote: > >> > >> > >> Michael S. Tsirkin writes: > >> > >> > So this is what I would call this option: > >> > > >> >

Re: [PATCH 0/2] Remove 32-bit Xen PV guest support

2019-07-15 Thread Andy Lutomirski
On Mon, Jul 15, 2019 at 9:34 AM Andi Kleen wrote: > > Juergen Gross writes: > > > The long term plan has been to replace Xen PV guests by PVH. The first > > victim of that plan are now 32-bit PV guests, as those are used only > > rather seldom these days. Xen on x86 requires 64-bit support and