fa83f68917
Use the KPI to tweak MSRs in mitigation code. Reviewed by: markj, scottl Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D22431
160 lines
5.0 KiB
C
160 lines
5.0 KiB
C
/*-
|
|
* Copyright (c) 1995 Bruce D. Evans.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the author nor the names of contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _X86_X86_VAR_H_
|
|
#define _X86_X86_VAR_H_
|
|
|
|
/*
|
|
* Miscellaneous machine-dependent declarations.
|
|
*/
|
|
|
|
extern long Maxmem;
|
|
extern u_int basemem;
|
|
extern int busdma_swi_pending;
|
|
extern u_int cpu_exthigh;
|
|
extern u_int cpu_feature;
|
|
extern u_int cpu_feature2;
|
|
extern u_int amd_feature;
|
|
extern u_int amd_feature2;
|
|
extern u_int amd_rascap;
|
|
extern u_int amd_pminfo;
|
|
extern u_int amd_extended_feature_extensions;
|
|
extern u_int via_feature_rng;
|
|
extern u_int via_feature_xcrypt;
|
|
extern u_int cpu_clflush_line_size;
|
|
extern u_int cpu_stdext_feature;
|
|
extern u_int cpu_stdext_feature2;
|
|
extern u_int cpu_stdext_feature3;
|
|
extern uint64_t cpu_ia32_arch_caps;
|
|
extern u_int cpu_fxsr;
|
|
extern u_int cpu_high;
|
|
extern u_int cpu_id;
|
|
extern u_int cpu_max_ext_state_size;
|
|
extern u_int cpu_mxcsr_mask;
|
|
extern u_int cpu_procinfo;
|
|
extern u_int cpu_procinfo2;
|
|
extern char cpu_vendor[];
|
|
extern u_int cpu_vendor_id;
|
|
extern u_int cpu_mon_mwait_flags;
|
|
extern u_int cpu_mon_min_size;
|
|
extern u_int cpu_mon_max_size;
|
|
extern u_int cpu_maxphyaddr;
|
|
extern u_int cpu_power_eax;
|
|
extern u_int cpu_power_ebx;
|
|
extern u_int cpu_power_ecx;
|
|
extern u_int cpu_power_edx;
|
|
extern char ctx_switch_xsave[];
|
|
extern u_int hv_base;
|
|
extern u_int hv_high;
|
|
extern char hv_vendor[];
|
|
extern char kstack[];
|
|
extern char sigcode[];
|
|
extern int szsigcode;
|
|
extern int vm_page_dump_size;
|
|
extern int workaround_erratum383;
|
|
extern int _udatasel;
|
|
extern int _ucodesel;
|
|
extern int _ucode32sel;
|
|
extern int _ufssel;
|
|
extern int _ugssel;
|
|
extern int use_xsave;
|
|
extern uint64_t xsave_mask;
|
|
extern u_int max_apic_id;
|
|
extern int i386_read_exec;
|
|
extern int pti;
|
|
extern int hw_ibrs_active;
|
|
extern int hw_mds_disable;
|
|
extern int hw_ssb_active;
|
|
extern int x86_taa_enable;
|
|
|
|
struct pcb;
|
|
struct thread;
|
|
struct reg;
|
|
struct fpreg;
|
|
struct dbreg;
|
|
struct dumperinfo;
|
|
struct trapframe;
|
|
|
|
/*
|
|
* The interface type of the interrupt handler entry point cannot be
|
|
* expressed in C. Use simplest non-variadic function type as an
|
|
* approximation.
|
|
*/
|
|
typedef void alias_for_inthand_t(void);
|
|
|
|
bool acpi_get_fadt_bootflags(uint16_t *flagsp);
|
|
void *alloc_fpusave(int flags);
|
|
void busdma_swi(void);
|
|
vm_paddr_t cpu_getmaxphyaddr(void);
|
|
bool cpu_mwait_usable(void);
|
|
void cpu_probe_amdc1e(void);
|
|
void cpu_setregs(void);
|
|
bool disable_wp(void);
|
|
void restore_wp(bool old_wp);
|
|
void dump_add_page(vm_paddr_t);
|
|
void dump_drop_page(vm_paddr_t);
|
|
void finishidentcpu(void);
|
|
void identify_cpu1(void);
|
|
void identify_cpu2(void);
|
|
void identify_cpu_fixup_bsp(void);
|
|
void identify_hypervisor(void);
|
|
void initializecpu(void);
|
|
void initializecpucache(void);
|
|
bool fix_cpuid(void);
|
|
void fillw(int /*u_short*/ pat, void *base, size_t cnt);
|
|
int is_physical_memory(vm_paddr_t addr);
|
|
int isa_nmi(int cd);
|
|
void handle_ibrs_entry(void);
|
|
void handle_ibrs_exit(void);
|
|
void hw_ibrs_recalculate(void);
|
|
void hw_mds_recalculate(void);
|
|
void hw_ssb_recalculate(bool all_cpus);
|
|
void x86_taa_recalculate(void);
|
|
void nmi_call_kdb(u_int cpu, u_int type, struct trapframe *frame);
|
|
void nmi_call_kdb_smp(u_int type, struct trapframe *frame);
|
|
void nmi_handle_intr(u_int type, struct trapframe *frame);
|
|
void pagecopy(void *from, void *to);
|
|
void printcpuinfo(void);
|
|
int pti_get_default(void);
|
|
int user_dbreg_trap(register_t dr6);
|
|
int minidumpsys(struct dumperinfo *);
|
|
struct pcb *get_pcb_td(struct thread *td);
|
|
|
|
#define MSR_OP_ANDNOT 0x00000001
|
|
#define MSR_OP_OR 0x00000002
|
|
#define MSR_OP_WRITE 0x00000003
|
|
#define MSR_OP_LOCAL 0x10000000
|
|
#define MSR_OP_SCHED 0x20000000
|
|
#define MSR_OP_RENDEZVOUS 0x30000000
|
|
void x86_msr_op(u_int msr, u_int op, uint64_t arg1);
|
|
|
|
#endif
|