| Message ID | 5c588d92cdf23a7355a79bf4b91c7214e5ced197.1677079672.git.jens.wiklander@linaro.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Xen FF-A mediator | expand |
Hi Jens, > On 22 Feb 2023, at 16:33, Jens Wiklander <jens.wiklander@linaro.org> wrote: > > Describes a FF-A version 1.1 [1] mediator to communicate with a Secure > Partition in secure world. > > [1] https://developer.arm.com/documentation/den0077/latest > Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> It is a little bit hard to check what is said here as the limitations are probably due to some things done after this patch. I would suggest to move this patch later in the serie. Cheers Bertrand > --- > SUPPORT.md | 7 +++++++ > docs/man/xl.cfg.5.pod.in | 15 +++++++++++++++ > 2 files changed, 22 insertions(+) > > diff --git a/SUPPORT.md b/SUPPORT.md > index aa1940e55f09..5e0595419684 100644 > --- a/SUPPORT.md > +++ b/SUPPORT.md > @@ -818,6 +818,13 @@ that covers the DMA of the device to be passed through. > > No support for QEMU backends in a 16K or 64K domain. > > +### ARM: Firmware Framework for Arm A-profile (FF-A) Mediator > + > + Status, Arm64: Tech Preview > + > +There are still some code paths where a vCPU may hog a pCPU longer than > +necessary. The FF-A mediator is not yet implemented for Arm32. > + > ### ARM: Guest Device Tree support > > Status: Supported > diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in > index 024bceeb61b2..ca4fc3e67b0c 100644 > --- a/docs/man/xl.cfg.5.pod.in > +++ b/docs/man/xl.cfg.5.pod.in > @@ -1645,6 +1645,21 @@ in OP-TEE. > > This feature is a B<technology preview>. > > +=item B<ffa> > + > +B<Arm only.> Allow a guest to communicate via FF-A with Secure Partitions > +(SP), default false. > + > +Currently is only a small subset of the FF-A specification supported. Just > +enough to communicate with OP-TEE. In general only direct messaging and > +sharing memory with one SP. More advanced use cases where memory might be > +shared or donated to multple SPs is not supported. > + > +See L<https://developer.arm.com/documentation/den0077/latest> for more > +informantion about FF-A. > + > +This feature is a B<technology preview>. > + > =back > > =back > -- > 2.34.1 >
Hi Bertrand, On Thu, Feb 23, 2023 at 4:10 PM Bertrand Marquis <Bertrand.Marquis@arm.com> wrote: > > Hi Jens, > > > On 22 Feb 2023, at 16:33, Jens Wiklander <jens.wiklander@linaro.org> wrote: > > > > Describes a FF-A version 1.1 [1] mediator to communicate with a Secure > > Partition in secure world. > > > > [1] https://developer.arm.com/documentation/den0077/latest > > Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> > > It is a little bit hard to check what is said here as the limitations > are probably due to some things done after this patch. > > I would suggest to move this patch later in the serie. OK, I'll put it last then. Thanks, Jens > > Cheers > Bertrand > > > --- > > SUPPORT.md | 7 +++++++ > > docs/man/xl.cfg.5.pod.in | 15 +++++++++++++++ > > 2 files changed, 22 insertions(+) > > > > diff --git a/SUPPORT.md b/SUPPORT.md > > index aa1940e55f09..5e0595419684 100644 > > --- a/SUPPORT.md > > +++ b/SUPPORT.md > > @@ -818,6 +818,13 @@ that covers the DMA of the device to be passed through. > > > > No support for QEMU backends in a 16K or 64K domain. > > > > +### ARM: Firmware Framework for Arm A-profile (FF-A) Mediator > > + > > + Status, Arm64: Tech Preview > > + > > +There are still some code paths where a vCPU may hog a pCPU longer than > > +necessary. The FF-A mediator is not yet implemented for Arm32. > > + > > ### ARM: Guest Device Tree support > > > > Status: Supported > > diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in > > index 024bceeb61b2..ca4fc3e67b0c 100644 > > --- a/docs/man/xl.cfg.5.pod.in > > +++ b/docs/man/xl.cfg.5.pod.in > > @@ -1645,6 +1645,21 @@ in OP-TEE. > > > > This feature is a B<technology preview>. > > > > +=item B<ffa> > > + > > +B<Arm only.> Allow a guest to communicate via FF-A with Secure Partitions > > +(SP), default false. > > + > > +Currently is only a small subset of the FF-A specification supported. Just > > +enough to communicate with OP-TEE. In general only direct messaging and > > +sharing memory with one SP. More advanced use cases where memory might be > > +shared or donated to multple SPs is not supported. > > + > > +See L<https://developer.arm.com/documentation/den0077/latest> for more > > +informantion about FF-A. > > + > > +This feature is a B<technology preview>. > > + > > =back > > > > =back > > -- > > 2.34.1 > > >
diff --git a/SUPPORT.md b/SUPPORT.md index aa1940e55f09..5e0595419684 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -818,6 +818,13 @@ that covers the DMA of the device to be passed through. No support for QEMU backends in a 16K or 64K domain. +### ARM: Firmware Framework for Arm A-profile (FF-A) Mediator + + Status, Arm64: Tech Preview + +There are still some code paths where a vCPU may hog a pCPU longer than +necessary. The FF-A mediator is not yet implemented for Arm32. + ### ARM: Guest Device Tree support Status: Supported diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in index 024bceeb61b2..ca4fc3e67b0c 100644 --- a/docs/man/xl.cfg.5.pod.in +++ b/docs/man/xl.cfg.5.pod.in @@ -1645,6 +1645,21 @@ in OP-TEE. This feature is a B<technology preview>. +=item B<ffa> + +B<Arm only.> Allow a guest to communicate via FF-A with Secure Partitions +(SP), default false. + +Currently is only a small subset of the FF-A specification supported. Just +enough to communicate with OP-TEE. In general only direct messaging and +sharing memory with one SP. More advanced use cases where memory might be +shared or donated to multple SPs is not supported. + +See L<https://developer.arm.com/documentation/den0077/latest> for more +informantion about FF-A. + +This feature is a B<technology preview>. + =back =back
Describes a FF-A version 1.1 [1] mediator to communicate with a Secure Partition in secure world. [1] https://developer.arm.com/documentation/den0077/latest Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> --- SUPPORT.md | 7 +++++++ docs/man/xl.cfg.5.pod.in | 15 +++++++++++++++ 2 files changed, 22 insertions(+)