cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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memory.h (1312B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2#ifndef __KVM_HYP_MEMORY_H
      3#define __KVM_HYP_MEMORY_H
      4
      5#include <asm/kvm_mmu.h>
      6#include <asm/page.h>
      7
      8#include <linux/types.h>
      9
     10struct hyp_page {
     11	unsigned short refcount;
     12	unsigned short order;
     13};
     14
     15extern u64 __hyp_vmemmap;
     16#define hyp_vmemmap ((struct hyp_page *)__hyp_vmemmap)
     17
     18#define __hyp_va(phys)	((void *)((phys_addr_t)(phys) - hyp_physvirt_offset))
     19
     20static inline void *hyp_phys_to_virt(phys_addr_t phys)
     21{
     22	return __hyp_va(phys);
     23}
     24
     25static inline phys_addr_t hyp_virt_to_phys(void *addr)
     26{
     27	return __hyp_pa(addr);
     28}
     29
     30#define hyp_phys_to_pfn(phys)	((phys) >> PAGE_SHIFT)
     31#define hyp_pfn_to_phys(pfn)	((phys_addr_t)((pfn) << PAGE_SHIFT))
     32#define hyp_phys_to_page(phys)	(&hyp_vmemmap[hyp_phys_to_pfn(phys)])
     33#define hyp_virt_to_page(virt)	hyp_phys_to_page(__hyp_pa(virt))
     34#define hyp_virt_to_pfn(virt)	hyp_phys_to_pfn(__hyp_pa(virt))
     35
     36#define hyp_page_to_pfn(page)	((struct hyp_page *)(page) - hyp_vmemmap)
     37#define hyp_page_to_phys(page)  hyp_pfn_to_phys((hyp_page_to_pfn(page)))
     38#define hyp_page_to_virt(page)	__hyp_va(hyp_page_to_phys(page))
     39#define hyp_page_to_pool(page)	(((struct hyp_page *)page)->pool)
     40
     41static inline int hyp_page_count(void *addr)
     42{
     43	struct hyp_page *p = hyp_virt_to_page(addr);
     44
     45	return p->refcount;
     46}
     47
     48#endif /* __KVM_HYP_MEMORY_H */