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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coresight-stm.h (747B)

      1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      2#ifndef __UAPI_CORESIGHT_STM_H_
      3#define __UAPI_CORESIGHT_STM_H_
      4
      5#include <linux/const.h>
      6
      7#define STM_FLAG_TIMESTAMPED   _BITUL(3)
      8#define STM_FLAG_MARKED        _BITUL(4)
      9#define STM_FLAG_GUARANTEED    _BITUL(7)
     10
     11/*
     12 * The CoreSight STM supports guaranteed and invariant timing
     13 * transactions.  Guaranteed transactions are guaranteed to be
     14 * traced, this might involve stalling the bus or system to
     15 * ensure the transaction is accepted by the STM.  While invariant
     16 * timing transactions are not guaranteed to be traced, they
     17 * will take an invariant amount of time regardless of the
     18 * state of the STM.
     19 */
     20enum {
     21	STM_OPTION_GUARANTEED = 0,
     22	STM_OPTION_INVARIANT,
     23};
     24
     25#endif