On Wed, Mar 08, 2023 at 04:42:10PM +0100, Juergen Gross wrote:
> +DEFINE_PARAVIRT_ASM(pv_native_irq_disable, "cli", .text);
> +DEFINE_PARAVIRT_ASM(pv_native_irq_enable, "sti", .text);
> +DEFINE_PARAVIRT_ASM(pv_native_read_cr2, "mov %cr2, %rax", .text);
per these v, the above ^ should be in
On Thu, Mar 16, 2023 at 2:55 AM Feng Liu wrote:
>
> Add const to make the read-only pointer parameters clear, similar to
> many existing functions.
>
> Use `container_of_const` to implement `to_vvq`, which ensures the
> const-ness of read-only parameters and avoids accidental modification
> of
On Thu, Mar 16, 2023 at 11:25 AM Shannon Nelson wrote:
>
> On 3/15/23 12:05 AM, Jason Wang wrote:
> > On Thu, Mar 9, 2023 at 9:31 AM Shannon Nelson
> > wrote:
> >>
> >> Add the documentation and Kconfig entry for pds_vdpa driver.
> >>
> >> Signed-off-by: Shannon Nelson
> >> ---
> >>
On Wed, Mar 15, 2023 at 3:28 PM Eli Cohen wrote:
>
> Extend the possible list for features that can be supported by firmware.
> Note that different versions of firmware may or may not support these
> features. The driver is made aware of them by querying the firmware.
>
> While doing this,
On Thu, Mar 16, 2023 at 11:25 AM Shannon Nelson wrote:
>
> On 3/15/23 12:05 AM, Jason Wang wrote:
> > On Thu, Mar 9, 2023 at 9:31 AM Shannon Nelson
> > wrote:
> >>
> >> Find the vDPA management information from the DSC in order to
> >> advertise it to the vdpa subsystem.
> >>
> >>
On 16.03.23 21:14, Peter Zijlstra wrote:
On Wed, Mar 08, 2023 at 04:42:10PM +0100, Juergen Gross wrote:
+DEFINE_PARAVIRT_ASM(pv_native_irq_disable, "cli", .text);
+DEFINE_PARAVIRT_ASM(pv_native_irq_enable, "sti", .text);
+DEFINE_PARAVIRT_ASM(pv_native_read_cr2, "mov %cr2, %rax", .text);
per
On Fri, Mar 17, 2023 at 12:07 AM Stefano Garzarella wrote:
>
> On Fri, Mar 3, 2023 at 3:39 PM Eugenio Perez Martin
> wrote:
> >
> > On Thu, Mar 2, 2023 at 12:35 PM Stefano Garzarella
> > wrote:
> > >
> > > vDPA supports the possibility to use user VA in the iotlb messages.
> > > So, let's add
On Thu, Mar 16, 2023 at 11:25 AM Shannon Nelson wrote:
>
> On 3/15/23 12:05 AM, Jason Wang wrote:
> > On Thu, Mar 9, 2023 at 9:31 AM Shannon Nelson
> > wrote:
> >>
> >> These are the adminq commands that will be needed for
> >> setting up and using the vDPA device.
> >
> > It's better to
On Thu, Mar 16, 2023 at 2:55 AM Feng Liu wrote:
>
> According to the Virtio Specification, the Queue Size parameter of a
> virtqueue corresponds to the maximum number of descriptors in that
> queue, and it does not have to be a power of 2 for packed virtqueues.
> However, the virtio_pci_modern
On Thu, Mar 16, 2023 at 2:55 AM Feng Liu wrote:
>
> Remove the inline keyword, according to kernel coding style [1], defining
> inline functions is not necessary for samll functions.
>
> It is verified with GCC 12.2.0, the generated code with/without inline
> is the same. Additionally tested with
On Wed, Mar 15, 2023 at 3:28 PM Eli Cohen wrote:
>
> One can still enable it when creating the vdpa device using vdpa tool by
> providing features that include it.
>
> For example:
> $ vdpa dev add name vdpa0 mgmtdev pci/:86:00.2 device_features 0x300cb982b
>
> Please be aware that this
On Sun, Mar 12, 2023 at 4:41 PM Eli Cohen wrote:
>
> When deleting the vdpa device, the debugfs files need to be removed so
> need to remove debugfs after the device has been unregistered.
>
> This fixes null pointer dereference when someone deletes the device
> after debugfs has been populated.
On Thu, Mar 16, 2023 at 11:25 AM Shannon Nelson wrote:
>
> On 3/15/23 12:05 AM, Jason Wang wrote:
> > On Thu, Mar 9, 2023 at 9:31 AM Shannon Nelson
> > wrote:
> >>
> >> The PDS vDPA device has a virtio BAR for describing itself, and
> >> the pds_vdpa driver needs to access it. Here we copy
On Tue, Mar 14, 2023 at 11:48:33AM +0800, Jason Wang wrote:
On Thu, Mar 2, 2023 at 7:34 PM Stefano Garzarella wrote:
When the user call VHOST_SET_OWNER ioctl and the vDPA device
has `use_va` set to true, let's call the bind_mm callback.
In this way we can bind the device to the user address
On Tue, Mar 14, 2023 at 01:31:25PM +0800, Jason Wang wrote:
On Tue, Mar 14, 2023 at 1:29 PM Jason Wang wrote:
On Thu, Mar 2, 2023 at 7:35 PM Stefano Garzarella wrote:
>
> The spinlock we use to protect the state of the simulator is sometimes
> held for a long time (for example, when devices
On Tue, Mar 14, 2023 at 12:53:57PM +0800, Jason Wang wrote:
On Thu, Mar 2, 2023 at 7:35 PM Stefano Garzarella wrote:
vDPA supports the possibility to use user VA in the iotlb messages.
So, let's add support for user VA in vringh to use it in the vDPA
simulators.
Signed-off-by: Stefano
在 2023/2/28 17:41, Xie Yongji 写道:
Add eventfd for the vdpa callback so that user
can signal it directly instead of running the
callback. It will be used for vhost-vdpa case.
Signed-off-by: Xie Yongji
---
drivers/vhost/vdpa.c | 2 ++
drivers/virtio/virtio_vdpa.c | 1 +
On Tue, Feb 28, 2023 at 5:42 PM Xie Yongji wrote:
>
> Now the vdpa callback will associate an eventfd in
> vhost-vdpa case.
I'd suggest avoiding mentioning drivers since vDPA parents should not
know which vDPA driver is bound.
We could say "signal vq trigger eventfd directly if possible"?
With
On Thu, Mar 16, 2023 at 5:25 PM Jason Wang wrote:
>
>
> 在 2023/2/28 17:41, Xie Yongji 写道:
> > Add eventfd for the vdpa callback so that user
> > can signal it directly instead of running the
> > callback. It will be used for vhost-vdpa case.
> >
> > Signed-off-by: Xie Yongji
> > ---
> >
On Tue, Mar 14, 2023 at 11:39:42AM +0800, Jason Wang wrote:
On Thu, Mar 2, 2023 at 7:34 PM Stefano Garzarella wrote:
These new optional callbacks is used to bind/unbind the device to
a specific address space so the vDPA framework can use VA when
these callbacks are implemented.
Suggested-by:
在 2023/2/28 17:41, Xie Yongji 写道:
This brings current interrupt affinity spreading mechanism
to vduse device. We will make use of group_cpus_evenly()
to create an irq callback affinity mask for each virtqueue of
vduse device. Then we will spread IRQs between CPUs in the affinity
mask, in a
On Thu, Mar 16, 2023 at 10:13:39AM +0100, Fabio M. De Francesco wrote:
On giovedì 2 marzo 2023 12:34:16 CET Stefano Garzarella wrote:
kmap_atomic() is deprecated in favor of kmap_local_page().
With kmap_local_page() the mappings are per thread, CPU local, can take
page-faults, and can be
On Wed, Mar 15, 2023 at 10:12 PM Fabio M. De Francesco
wrote:
>
> On martedì 14 marzo 2023 04:56:08 CET Jason Wang wrote:
> > On Thu, Mar 2, 2023 at 7:34 PM Stefano Garzarella
> wrote:
> > > kmap_atomic() is deprecated in favor of kmap_local_page().
> >
> > It's better to mention the commit or
On Tue, Mar 14, 2023 at 01:36:13PM +0800, Jason Wang wrote:
On Thu, Mar 2, 2023 at 7:35 PM Stefano Garzarella wrote:
The new "use_va" module parameter (default: false) is used in
vdpa_alloc_device() to inform the vDPA framework that the device
supports VA.
vringh is initialized to use VA
On Tue, Feb 28, 2023 at 5:42 PM Xie Yongji wrote:
>
> Export group_cpus_evenly() so that some modules
> can make use of it to group CPUs evenly according
> to NUMA and CPU locality.
>
> Signed-off-by: Xie Yongji
Acked-by: Jason Wang
Thanks
> ---
> lib/group_cpus.c | 1 +
> 1 file changed, 1
Hi
Am 16.03.23 um 03:16 schrieb Zack Rusin:
On Wed, 2023-03-15 at 17:14 +0100, Thomas Zimmermann wrote:
Remove the flag prefer_shadow_fbdev from struct drm_mode_config.
Drivers set this flag to enable shadow buffering in the generic
fbdev emulation. Such shadow buffering is now mandatory, so
On Thu, Mar 16, 2023 at 9:31 AM Stefano Garzarella wrote:
>
> On Tue, Mar 14, 2023 at 11:48:33AM +0800, Jason Wang wrote:
> >On Thu, Mar 2, 2023 at 7:34 PM Stefano Garzarella
> >wrote:
> >>
> >> When the user call VHOST_SET_OWNER ioctl and the vDPA device
> >> has `use_va` set to true, let's
[!] Note: This is a work in progress. At the moment, some things won't
build if this patch is applied. nvme, kcm, smc, tls.
Remove ->sendpage() and ->sendpage_locked(). sendmsg() with
MSG_SPLICE_PAGES should be used instead. This allows multiple pages and
multipage folios to be passed
On Fri, Mar 3, 2023 at 3:39 PM Eugenio Perez Martin wrote:
>
> On Thu, Mar 2, 2023 at 12:35 PM Stefano Garzarella
> wrote:
> >
> > vDPA supports the possibility to use user VA in the iotlb messages.
> > So, let's add support for user VA in vringh to use it in the vDPA
> > simulators.
> >
> >
On Wed, Mar 08, 2023 at 04:42:10PM +0100, Juergen Gross wrote:
> All functions referenced via __PV_IS_CALLEE_SAVE() need to be assembler
> functions, as those functions calls are hidden from gcc. In case the
> kernel is compiled with "-fzero-call-used-regs" the compiler will
> clobber caller-saved
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