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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cpu.h (2277B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ASM_X86_CPU_H
      3#define _ASM_X86_CPU_H
      4
      5#include <linux/device.h>
      6#include <linux/cpu.h>
      7#include <linux/topology.h>
      8#include <linux/nodemask.h>
      9#include <linux/percpu.h>
     10#include <asm/ibt.h>
     11
     12#ifdef CONFIG_SMP
     13
     14extern void prefill_possible_map(void);
     15
     16#else /* CONFIG_SMP */
     17
     18static inline void prefill_possible_map(void) {}
     19
     20#define cpu_physical_id(cpu)			boot_cpu_physical_apicid
     21#define cpu_acpi_id(cpu)			0
     22#define safe_smp_processor_id()			0
     23
     24#endif /* CONFIG_SMP */
     25
     26struct x86_cpu {
     27	struct cpu cpu;
     28};
     29
     30#ifdef CONFIG_HOTPLUG_CPU
     31extern int arch_register_cpu(int num);
     32extern void arch_unregister_cpu(int);
     33extern void start_cpu0(void);
     34#ifdef CONFIG_DEBUG_HOTPLUG_CPU0
     35extern int _debug_hotplug_cpu(int cpu, int action);
     36#endif
     37#endif
     38
     39extern void ap_init_aperfmperf(void);
     40
     41int mwait_usable(const struct cpuinfo_x86 *);
     42
     43unsigned int x86_family(unsigned int sig);
     44unsigned int x86_model(unsigned int sig);
     45unsigned int x86_stepping(unsigned int sig);
     46#ifdef CONFIG_CPU_SUP_INTEL
     47extern void __init sld_setup(struct cpuinfo_x86 *c);
     48extern bool handle_user_split_lock(struct pt_regs *regs, long error_code);
     49extern bool handle_guest_split_lock(unsigned long ip);
     50extern void handle_bus_lock(struct pt_regs *regs);
     51u8 get_this_hybrid_cpu_type(void);
     52#else
     53static inline void __init sld_setup(struct cpuinfo_x86 *c) {}
     54static inline bool handle_user_split_lock(struct pt_regs *regs, long error_code)
     55{
     56	return false;
     57}
     58
     59static inline bool handle_guest_split_lock(unsigned long ip)
     60{
     61	return false;
     62}
     63
     64static inline void handle_bus_lock(struct pt_regs *regs) {}
     65
     66static inline u8 get_this_hybrid_cpu_type(void)
     67{
     68	return 0;
     69}
     70#endif
     71#ifdef CONFIG_IA32_FEAT_CTL
     72void init_ia32_feat_ctl(struct cpuinfo_x86 *c);
     73#else
     74static inline void init_ia32_feat_ctl(struct cpuinfo_x86 *c) {}
     75#endif
     76
     77extern __noendbr void cet_disable(void);
     78
     79struct ucode_cpu_info;
     80
     81int intel_cpu_collect_info(struct ucode_cpu_info *uci);
     82
     83static inline bool intel_cpu_signatures_match(unsigned int s1, unsigned int p1,
     84					      unsigned int s2, unsigned int p2)
     85{
     86	if (s1 != s2)
     87		return false;
     88
     89	/* Processor flags are either both 0 ... */
     90	if (!p1 && !p2)
     91		return true;
     92
     93	/* ... or they intersect. */
     94	return p1 & p2;
     95}
     96
     97#endif /* _ASM_X86_CPU_H */