Yifan Liu fa6b55db68 hv: tee: Handling x86_tee secure interrupts corner cases ... Previous upstreamed patches handles the secure/non-secure interrupts in handle_x86_tee_int. However there is a corner case in which there might be unhandled secure interrupts (in a very short time window) when TEE yields vCPU. For this case we always make sure that no secure interrupts are pending in TEE's vlapic before scheduling REE. Also in previous patches, if non-secure interrupt comes when TEE is handling its secure interrupts, hypervisor injects a predefined vector into TEE's vlapic. TEE does not consume this vector in secure interrupt handling routine so it stays in vIRR, but it should be cleared because the actual interrupt will be consumed in REE after VM Entry. v3: Fix comments on interrupt priority v2: Add comments explaining the priority of secure/non-secure interrupts Tracked-On: #6571 Signed-off-by: Yifan Liu <yifan1.liu@intel.com> Reviewed-by: Wang, Yu1 <yu1.wang@intel.com> Acked-by: Anthony Xu <anthony.xu@intel.com>		2021-12-09 10:47:16 +08:00
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x86	hv: tee: Handling x86_tee secure interrupts corner cases	2021-12-09 10:47:16 +08:00