This patch serie adds support to use FF-A between VM for communications using indirect messages.
It adds a Kconfig parameter to enable this feature and marks it as experimental as for now there is no system to restrict communication rights between VM using this system. It also adds support to use VM to VM communications using FF-A even if there is no firmware support for FF-A. As this feature enables FF-A support in all cases, we also introduce a new command line parameter to allow the user to force which tee is to be used between FF-A and Optee to have a solution to enable optee support if FF-A VM to VM is enabled. Changes since v1 (rfc): - add a tee command line parameter - use IS_ENABLED instead of ifdef when possible - rebase on latest staging Bertrand Marquis (5): xen/arm: Create tee command line parameter xen/arm: ffa: Introduce VM to VM support xen/arm: ffa: Add buffer full notification support xen/arm: ffa: Add indirect message between VM xen/arm: ffa: Enable VM to VM without firmware docs/misc/xen-command-line.pandoc | 14 +++ xen/arch/arm/include/asm/tee/tee.h | 4 + xen/arch/arm/tee/Kconfig | 11 +++ xen/arch/arm/tee/ffa.c | 12 ++- xen/arch/arm/tee/ffa_msg.c | 96 +++++++++++++++++-- xen/arch/arm/tee/ffa_notif.c | 138 +++++++++++++++------------ xen/arch/arm/tee/ffa_partinfo.c | 147 +++++++++++++++++++++++------ xen/arch/arm/tee/ffa_private.h | 29 ++++++ xen/arch/arm/tee/tee.c | 31 ++++++ 9 files changed, 380 insertions(+), 102 deletions(-) -- 2.47.1
