/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2020 Amazon . com , Inc . or its affiliates . All Rights Reserved .
*/
#ifndef _NE_MISC_DEV_H_
#define _NE_MISC_DEV_H_
#include <linux/cpumask.h>
#include <linux/list.h>
#include <linux/miscdevice.h>
#include <linux/mm.h>
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/wait.h>
#include "ne_pci_dev.h"
/**
* struct ne_mem_region - Entry in the enclave user space memory regions list .
* @ mem_region_list_entry : Entry in the list of enclave memory regions .
* @ memory_size : Size of the user space memory region .
* @ nr_pages : Number of pages that make up the memory region .
* @ pages : Pages that make up the user space memory region .
* @ userspace_addr : User space address of the memory region .
*/
struct ne_mem_region {
struct list_head mem_region_list_entry;
u64 memory_size;
unsigned long nr_pages;
struct page **pages;
u64 userspace_addr;
};
/**
* struct ne_enclave - Per - enclave data used for enclave lifetime management .
* @ enclave_info_mutex : Mutex for accessing this internal state .
* @ enclave_list_entry : Entry in the list of created enclaves .
* @ eventq : Wait queue used for out - of - band event notifications
* triggered from the PCI device event handler to
* the enclave process via the poll function .
* @ has_event : Variable used to determine if the out - of - band event
* was triggered .
* @ max_mem_regions : The maximum number of memory regions that can be
* handled by the hypervisor .
* @ mem_regions_list : Enclave user space memory regions list .
* @ mem_size : Enclave memory size .
* @ mm : Enclave process abstraction mm data struct .
* @ nr_mem_regions : Number of memory regions associated with the enclave .
* @ nr_parent_vm_cores : The size of the threads per core array . The
* total number of CPU cores available on the
* parent / primary VM .
* @ nr_threads_per_core : The number of threads that a full CPU core has .
* @ nr_vcpus : Number of vcpus associated with the enclave .
* @ numa_node : NUMA node of the enclave memory and CPUs .
* @ slot_uid : Slot unique id mapped to the enclave .
* @ state : Enclave state , updated during enclave lifetime .
* @ threads_per_core : Enclave full CPU cores array , indexed by core id ,
* consisting of cpumasks with all their threads .
* Full CPU cores are taken from the NE CPU pool
* and are available to the enclave .
* @ vcpu_ids : Cpumask of the vCPUs that are set for the enclave .
*/
struct ne_enclave {
struct mutex enclave_info_mutex;
struct list_head enclave_list_entry;
wait_queue_head_t eventq;
bool has_event;
u64 max_mem_regions;
struct list_head mem_regions_list;
u64 mem_size;
struct mm_struct *mm;
unsigned int nr_mem_regions;
unsigned int nr_parent_vm_cores;
unsigned int nr_threads_per_core;
unsigned int nr_vcpus;
int numa_node;
u64 slot_uid;
u16 state;
cpumask_var_t *threads_per_core;
cpumask_var_t vcpu_ids;
};
/**
* enum ne_state - States available for an enclave .
* @ NE_STATE_INIT : The enclave has not been started yet .
* @ NE_STATE_RUNNING : The enclave was started and is running as expected .
* @ NE_STATE_STOPPED : The enclave exited without userspace interaction .
*/
enum ne_state {
NE_STATE_INIT = 0 ,
NE_STATE_RUNNING = 2 ,
NE_STATE_STOPPED = U16_MAX,
};
/**
* struct ne_devs - Data structure to keep refs to the NE misc and PCI devices .
* @ ne_misc_dev : Nitro Enclaves misc device .
* @ ne_pci_dev : Nitro Enclaves PCI device .
*/
struct ne_devs {
struct miscdevice *ne_misc_dev;
struct ne_pci_dev *ne_pci_dev;
};
/* Nitro Enclaves (NE) data structure for keeping refs to the NE misc and PCI devices. */
extern struct ne_devs ne_devs;
#endif /* _NE_MISC_DEV_H_ */
Messung V0.5 in Prozent C=93 H=100 G=96
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-09-29)
¤
*© Formatika GbR, Deutschland