fix(interrupts): check for pending interrupts during direct response
A secure interrupt might trigger while the target SP is currently
running to send a direct response. SPMC would then inject virtual
interrupt to vCPU of target SP and resume it.
However, it is possible that the S-EL1 SP could have its interrupts
masked and hence might not handle the virtual interrupt before
sending direct response message. In such a scenario, SPMC must
return an error with code FFA_INTERRUPTED to inform the S-EL1 SP of
a pending interrupt and allow it to be handled before sending the
direct response.
Change-Id: I8a4517a929799f29e9eba01dab0fd9b8b538b2db
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
diff --git a/src/arch/fake/hypervisor/ffa.c b/src/arch/fake/hypervisor/ffa.c
index ffa87cd..9b74a98 100644
--- a/src/arch/fake/hypervisor/ffa.c
+++ b/src/arch/fake/hypervisor/ffa.c
@@ -490,6 +490,12 @@
(void)vm_locked;
}
+bool plat_ffa_is_direct_response_interrupted(struct vcpu *current)
+{
+ (void)current;
+ return false;
+}
+
struct ffa_value plat_ffa_other_world_mem_send(
struct vm *from, uint32_t share_func,
struct ffa_memory_region **memory_region, uint32_t length,