Andra Paraschiv 9c8eb50fe9 nitro_enclaves: Add logic for terminating an enclave ... An enclave is associated with an fd that is returned after the enclave creation logic is completed. This enclave fd is further used to setup enclave resources. Once the enclave needs to be terminated, the enclave fd is closed. Add logic for enclave termination, that is mapped to the enclave fd release callback. Free the internal enclave info used for bookkeeping. Changelog v9 -> v10 * Update commit message to include the changelog before the SoB tag(s). v8 -> v9 * Use the ne_devs data structure to get the refs for the NE PCI device. v7 -> v8 * No changes. v6 -> v7 * Remove the pci_dev_put() call as the NE misc device parent field is used now to get the NE PCI device. * Update the naming and add more comments to make more clear the logic of handling full CPU cores and dedicating them to the enclave. v5 -> v6 * Update documentation to kernel-doc format. * Use directly put_page() instead of unpin_user_pages(), to match the get_user_pages() calls. v4 -> v5 * Release the reference to the NE PCI device on enclave fd release. * Adapt the logic to cpumask enclave vCPU ids and CPU cores. * Remove sanity checks for situations that shouldn't happen, only if buggy system or broken logic at all. v3 -> v4 * Use dev_err instead of custom NE log pattern. v2 -> v3 * Remove the WARN_ON calls. * Update static calls sanity checks. * Update kzfree() calls to kfree(). v1 -> v2 * Add log pattern for NE. * Remove the BUG_ON calls. * Update goto labels to match their purpose. * Add early exit in release() if there was a slot alloc error in the fd creation path. Reviewed-by: Alexander Graf <graf@amazon.com> Signed-off-by: Alexandru Vasile <lexnv@amazon.com> Signed-off-by: Andra Paraschiv <andraprs@amazon.com> Link: https://lore.kernel.org/r/20200921121732.44291-14-andraprs@amazon.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-09-22 13:58:41 +02:00
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ne_misc_dev.c	nitro_enclaves: Add logic for terminating an enclave	2020-09-22 13:58:41 +02:00
ne_misc_dev.h
ne_pci_dev.c	nitro_enclaves: Init misc device providing the ioctl interface	2020-09-22 13:58:41 +02:00
ne_pci_dev.h