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.
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