forked from luck/tmp_suning_uos_patched
e5d616d8bb
In addition to the replies sent by the Nitro Enclaves PCI device in response to command requests, out-of-band enclave events can happen e.g. an enclave crashes. In this case, the Nitro Enclaves driver needs to be aware of the event and notify the corresponding user space process that abstracts the enclave. Register an MSI-X interrupt vector to be used for this kind of out-of-band events. The interrupt notifies that the state of an enclave changed and the driver logic scans the state of each running enclave to identify for which this notification is intended. Create an workqueue to handle the out-of-band events. Notify user space enclave process that is using a polling mechanism on the enclave fd. Changelog v9 -> v10 * Update commit message to include the changelog before the SoB tag(s). v8 -> v9 * Use the reference to the pdev directly from the ne_pci_dev instead of the one from the enclave data structure. v7 -> v8 * No changes. v6 -> v7 * No changes. v5 -> v6 * Update documentation to kernel-doc format. v4 -> v5 * 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. * Return IRQ_NONE when interrupts are not handled. v2 -> v3 * Remove the WARN_ON calls. * Update static calls sanity checks. * Remove "ratelimited" from the logs that are not in the ioctl call paths. v1 -> v2 * Add log pattern for NE. * Update goto labels to match their purpose. Reviewed-by: Alexander Graf <graf@amazon.com> Signed-off-by: Alexandru-Catalin Vasile <lexnv@amazon.com> Signed-off-by: Andra Paraschiv <andraprs@amazon.com> Link: https://lore.kernel.org/r/20200921121732.44291-7-andraprs@amazon.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| nitro_enclaves | ||
| vboxguest | ||
| fsl_hypervisor.c | ||
| Kconfig | ||
| Makefile | ||