mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-09-03 17:51:23 +00:00
b35875d466
We don't need 16 bits to store the hyp page order, and we'll need some bits to store page ownership data soon, so let's reduce the order member. Tested-by: Fuad Tabba <tabba@google.com> Reviewed-by: Fuad Tabba <tabba@google.com> Signed-off-by: Quentin Perret <qperret@google.com> Link: https://lore.kernel.org/r/20241218194059.3670226-4-qperret@google.com Signed-off-by: Marc Zyngier <maz@kernel.org>
35 lines
925 B
C
35 lines
925 B
C
/* 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 */
|