Re: [PATCH 0/8] arm_ffa: Add FFA_MEM_SHARE and FFA_MEM_RECLAIM support

Abdellatif El Khlifi
2024-11-20T13:13:37Z

Hi Tom,

I'm happy to address your review comments and make the patchset
meets your expectations.

Please feel free to give a feedback and I'll be addressing that ASAP.

Cheers
Abdellatif

On Thu, Nov 07, 2024 at 03:33:11PM +0000, Abdellatif El Khlifi wrote:
> Hi Simon, Tom,
>
> > Add to the FF-A bus FFA_MEM_SHARE and FFA_MEM_RECLAIM ABIs.
> >
> > These FF-A ABIs are for memory management. They are used for sharing
> > memory between U-Boot and secure world.
> >
> > FFA_MEM_SHARE starts a transaction to grant access to a memory region
> > to one or more Borrowers (aka Secure Partitions or endpoints).
> > FFA_MEM_RECLAIM restores exclusive access to a memory region back to
> > its Owner (U-Boot).
> >
> > For more details about these ABIs please refer to the FF-A v1.0
> > specification [1]. For more details about FF-A in U-Boot please
> > refer to the readme [2].
> >
> > This work is based on the implementation in Linux kernel [3].
> >
> > This work is provided with sandbox support (emulation and test cases).
> >
> > [1]: https://developer.arm.com/documentation/den0077/a/?lang=en
> > [2]: doc/arch/arm64.ffa.rst
> > [3]: commit cc2195fe536c28e192df5d07e6dd277af36814b4
> > Files: drivers/firmware/arm_ffa/driver.c , include/linux/arm_ffa.h
> >
> > Cc: Tom Rini <trini@konsulko.com>
> > Cc: Simon Glass <sjg@chromium.org>
> > Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>
> > Cc: Jens Wiklander <jens.wiklander@linaro.org>
> > Cc: Achin Gupta <achin.gupta@arm.com>
> > Cc: Drew Reed <Drew.Reed@arm.com>
> > Cc: Hugues Kamba Mpiana <Hugues.KambaMpiana@arm.com>
> >
> > Cheers,
> > Abdellatif
> >
> > Abdellatif El Khlifi (8):
> > arm_ffa: Add NULL pointer check to the driver operations
> > arm_ffa: Add FFA_MEM_SHARE support
> > arm_ffa: Add FFA_MEM_RECLAIM support
> > arm_ffa: sandbox: Replace the emulator error log with debug log
> > arm_ffa: sandbox: Add FFA_MEM_SHARE emulation
> > arm_ffa: sandbox: Add FFA_MEM_SHARE tests
> > arm_ffa: sandbox: Add FFA_MEM_RECLAIM emulation
> > arm_ffa: sandbox: Add FFA_MEM_RECLAIM tests
> >
>
> A gentle reminder please. Your comments are welcome.
>
> Cheers,
> Abdellatif