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/* SPDX-License-Identifier: GPL-2.0-only */ #ifndef __KVM_HYP_GFP_H #define __KVM_HYP_GFP_H #include <linux/list.h> #include <nvhe/memory.h> #include <nvhe/spinlock.h> #define HYP_NO_ORDER ((u8)(~0)) struct hyp_pool { /* * Spinlock protecting concurrent changes to the memory pool as well as * the struct hyp_page of the pool's pages until we have a proper atomic * API at EL2. */ hyp_spinlock_t lock; struct list_head free_area[NR_PAGE_ORDERS]; phys_addr_t range_start; phys_addr_t range_end; u8 max_order; }; /* Allocation */ void *hyp_alloc_pages(struct hyp_pool *pool, u8 order); void hyp_split_page(struct hyp_page *page); void hyp_get_page(struct hyp_pool *pool, void *addr); void hyp_put_page(struct hyp_pool *pool, void *addr); /* Used pages cannot be freed */ int hyp_pool_init(struct hyp_pool *pool, u64 pfn, unsigned int nr_pages, unsigned int reserved_pages); #endif /* __KVM_HYP_GFP_H */