On Sat, Jul 13, 2019 at 08:07:36PM +0300, Jarkko Sakkinen wrote: > v21: > * Check on mmap() that the VMA does cover an area that does not have > enclave pages. Only mapping with PROT_NONE can do that to reserve > initial address space for an enclave. > * Check om mmap() and mprotect() that the VMA permissions do not > surpass the enclave permissions. > * Remove two refcounts from vma_close(): mm_list and encl->refcount. > Enclave refcount is only need for swapper/enclave sync and we can > remove mm_list refcount by destroying mm_struct when the process > is closed. By not having vm_close() the Linux MM can merge VMAs. > * Do not naturally align MAP_FIXED address. > * Numerous small fixes and clean ups. > * Use SRCU for synchronizing the list of mm_struct's. > * Move to stack based call convention in the vDSO.
I forgot something: * CONFIG_INTEL_SGX_DRIVER is not bistate i.e. no more LKM support. It is still useful to have the compile-time option because VM host does not need to have it enabled. Now sgx_init() calls explicitly sgx_drv_init(). In addition, platform driver has been ripped a way because we no longer need ACPI hotplug. In effect, the device is now parentless.
