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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vsyscall.h (935B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __ASM_VDSO_VSYSCALL_H
      3#define __ASM_VDSO_VSYSCALL_H
      4
      5#ifndef __ASSEMBLY__
      6
      7#include <linux/timekeeper_internal.h>
      8#include <vdso/datapage.h>
      9
     10#define VDSO_PRECISION_MASK	~(0xFF00ULL<<48)
     11
     12extern struct vdso_data *vdso_data;
     13
     14/*
     15 * Update the vDSO data page to keep in sync with kernel timekeeping.
     16 */
     17static __always_inline
     18struct vdso_data *__arm64_get_k_vdso_data(void)
     19{
     20	return vdso_data;
     21}
     22#define __arch_get_k_vdso_data __arm64_get_k_vdso_data
     23
     24static __always_inline
     25void __arm64_update_vsyscall(struct vdso_data *vdata, struct timekeeper *tk)
     26{
     27	vdata[CS_HRES_COARSE].mask	= VDSO_PRECISION_MASK;
     28	vdata[CS_RAW].mask		= VDSO_PRECISION_MASK;
     29}
     30#define __arch_update_vsyscall __arm64_update_vsyscall
     31
     32/* The asm-generic header needs to be included after the definitions above */
     33#include <asm-generic/vdso/vsyscall.h>
     34
     35#endif /* !__ASSEMBLY__ */
     36
     37#endif /* __ASM_VDSO_VSYSCALL_H */