On Mon, Jun 16, 2025 at 01:46:42PM +0530, Aneesh Kumar K.V wrote:
> Xu Yilun writes:
>
> > On Wed, Jun 04, 2025 at 07:07:18PM +0530, Aneesh Kumar K.V wrote:
> >> Xu Yilun writes:
> >>
> >> > On Sun, Jun 01, 2025 at 04:15:32PM +0530, Aneesh Kumar K.V wrote:
> >> >> Xu Yilun writes:
> >> >>
> >
Xu Yilun writes:
> On Wed, Jun 04, 2025 at 07:07:18PM +0530, Aneesh Kumar K.V wrote:
>> Xu Yilun writes:
>>
>> > On Sun, Jun 01, 2025 at 04:15:32PM +0530, Aneesh Kumar K.V wrote:
>> >> Xu Yilun writes:
>> >>
>> >> > Add new IOCTLs to do TSM based TDI bind/unbind. These IOCTLs are
>> >> > expe
On Fri, Jun 06, 2025 at 03:02:49PM +0530, Aneesh Kumar K.V wrote:
> Jason Gunthorpe writes:
>
> > On Thu, Jun 05, 2025 at 09:47:01PM +0530, Aneesh Kumar K.V wrote:
> >> Jason Gunthorpe writes:
> >>
> >> > On Thu, Jun 05, 2025 at 05:33:52PM +0530, Aneesh Kumar K.V wrote:
> >> >
> >> >> > +
> >>
Jason Gunthorpe writes:
> On Thu, Jun 05, 2025 at 09:47:01PM +0530, Aneesh Kumar K.V wrote:
>> Jason Gunthorpe writes:
>>
>> > On Thu, Jun 05, 2025 at 05:33:52PM +0530, Aneesh Kumar K.V wrote:
>> >
>> >> > +
>> >> > + /* To ensure no host side MMIO access is possible */
>> >> > + re
On Thu, Jun 05, 2025 at 01:33:39PM -0300, Jason Gunthorpe wrote:
> On Thu, Jun 05, 2025 at 09:47:01PM +0530, Aneesh Kumar K.V wrote:
> > Jason Gunthorpe writes:
> >
> > > On Thu, Jun 05, 2025 at 05:33:52PM +0530, Aneesh Kumar K.V wrote:
> > >
> > >> > +
> > >> > + /* To ensure no host side M
On Thu, Jun 05, 2025 at 12:09:16PM -0300, Jason Gunthorpe wrote:
> On Thu, Jun 05, 2025 at 05:41:17PM +0800, Xu Yilun wrote:
>
> > No, this is not device side TDISP requirement. It is host side
> > requirement to fix DMA silent drop issue. TDX enforces CPU S2 PT share
> > with IOMMU S2 PT (does AR
On Thu, Jun 05, 2025 at 09:47:01PM +0530, Aneesh Kumar K.V wrote:
> Jason Gunthorpe writes:
>
> > On Thu, Jun 05, 2025 at 05:33:52PM +0530, Aneesh Kumar K.V wrote:
> >
> >> > +
> >> > +/* To ensure no host side MMIO access is possible */
> >> > +ret = pci_request_regions_exclusive
Jason Gunthorpe writes:
> On Thu, Jun 05, 2025 at 05:33:52PM +0530, Aneesh Kumar K.V wrote:
>
>> > +
>> > + /* To ensure no host side MMIO access is possible */
>> > + ret = pci_request_regions_exclusive(pdev, "vfio-pci-tsm");
>> > + if (ret)
>> > + goto out_unlock;
>> > +
>> >
>>
>>
Xu Yilun writes:
> On Wed, Jun 04, 2025 at 07:07:18PM +0530, Aneesh Kumar K.V wrote:
>> Xu Yilun writes:
>>
>> > On Sun, Jun 01, 2025 at 04:15:32PM +0530, Aneesh Kumar K.V wrote:
>> >> Xu Yilun writes:
>> >>
>> >> > Add new IOCTLs to do TSM based TDI bind/unbind. These IOCTLs are
>> >> > expe
On Thu, Jun 05, 2025 at 05:33:52PM +0530, Aneesh Kumar K.V wrote:
> > +
> > + /* To ensure no host side MMIO access is possible */
> > + ret = pci_request_regions_exclusive(pdev, "vfio-pci-tsm");
> > + if (ret)
> > + goto out_unlock;
> > +
> >
>
> I am hitting failures here with s
On Thu, Jun 05, 2025 at 05:41:17PM +0800, Xu Yilun wrote:
> No, this is not device side TDISP requirement. It is host side
> requirement to fix DMA silent drop issue. TDX enforces CPU S2 PT share
> with IOMMU S2 PT (does ARM do the same?), so unmap CPU S2 PT in KVM equals
> unmap IOMMU S2 PT.
>
>
Xu Yilun writes:
> Add new IOCTLs to do TSM based TDI bind/unbind. These IOCTLs are
> expected to be called by userspace when CoCo VM issues TDI bind/unbind
> command to VMM. Specifically for TDX Connect, these commands are some
> secure Hypervisor call named GHCI (Guest-Hypervisor Communication
On Wed, Jun 04, 2025 at 07:07:18PM +0530, Aneesh Kumar K.V wrote:
> Xu Yilun writes:
>
> > On Sun, Jun 01, 2025 at 04:15:32PM +0530, Aneesh Kumar K.V wrote:
> >> Xu Yilun writes:
> >>
> >> > Add new IOCTLs to do TSM based TDI bind/unbind. These IOCTLs are
> >> > expected to be called by userspa
Xu Yilun writes:
> On Sun, Jun 01, 2025 at 04:15:32PM +0530, Aneesh Kumar K.V wrote:
>> Xu Yilun writes:
>>
>> > Add new IOCTLs to do TSM based TDI bind/unbind. These IOCTLs are
>> > expected to be called by userspace when CoCo VM issues TDI bind/unbind
>> > command to VMM. Specifically for TDX
On Sun, Jun 01, 2025 at 04:15:32PM +0530, Aneesh Kumar K.V wrote:
> Xu Yilun writes:
>
> > Add new IOCTLs to do TSM based TDI bind/unbind. These IOCTLs are
> > expected to be called by userspace when CoCo VM issues TDI bind/unbind
> > command to VMM. Specifically for TDX Connect, these commands a
Xu Yilun writes:
> Add new IOCTLs to do TSM based TDI bind/unbind. These IOCTLs are
> expected to be called by userspace when CoCo VM issues TDI bind/unbind
> command to VMM. Specifically for TDX Connect, these commands are some
> secure Hypervisor call named GHCI (Guest-Hypervisor Communication
Add new IOCTLs to do TSM based TDI bind/unbind. These IOCTLs are
expected to be called by userspace when CoCo VM issues TDI bind/unbind
command to VMM. Specifically for TDX Connect, these commands are some
secure Hypervisor call named GHCI (Guest-Hypervisor Communication
Interface).
The TSM TDI bi
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