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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sev.h (990B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * AMD Secure Encrypted Virtualization
      4 *
      5 * Author: Brijesh Singh <brijesh.singh@amd.com>
      6 */
      7
      8#ifndef __LINUX_SEV_H
      9#define __LINUX_SEV_H
     10
     11/* RMUPDATE detected 4K page and 2MB page overlap. */
     12#define RMPUPDATE_FAIL_OVERLAP		7
     13
     14#ifdef CONFIG_AMD_MEM_ENCRYPT
     15int snp_lookup_rmpentry(u64 pfn, int *level);
     16int psmash(u64 pfn);
     17int rmp_make_private(u64 pfn, u64 gpa, enum pg_level level, int asid, bool immutable);
     18int rmp_make_shared(u64 pfn, enum pg_level level);
     19void dump_rmpentry(u64 pfn);
     20#else
     21static inline int snp_lookup_rmpentry(u64 pfn, int *level) { return 0; }
     22static inline int psmash(u64 pfn) { return -ENXIO; }
     23static inline int rmp_make_private(u64 pfn, u64 gpa, enum pg_level level, int asid,
     24				   bool immutable)
     25{
     26	return -ENODEV;
     27}
     28static inline int rmp_make_shared(u64 pfn, enum pg_level level) { return -ENODEV; }
     29static inline void dump_rmpentry(u64 pfn) { }
     30
     31#endif /* CONFIG_AMD_MEM_ENCRYPT */
     32#endif /* __LINUX_SEV_H */