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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trace.h (10178B)


      1/*
      2 * This file is subject to the terms and conditions of the GNU General Public
      3 * License.  See the file "COPYING" in the main directory of this archive
      4 * for more details.
      5 *
      6 * Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.
      7 * Authors: Sanjay Lal <sanjayl@kymasys.com>
      8 */
      9
     10#if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ)
     11#define _TRACE_KVM_H
     12
     13#include <linux/tracepoint.h>
     14
     15#undef TRACE_SYSTEM
     16#define TRACE_SYSTEM kvm
     17#define TRACE_INCLUDE_PATH .
     18#define TRACE_INCLUDE_FILE trace
     19
     20/*
     21 * arch/mips/kvm/mips.c
     22 */
     23extern bool kvm_trace_guest_mode_change;
     24int kvm_guest_mode_change_trace_reg(void);
     25void kvm_guest_mode_change_trace_unreg(void);
     26
     27/*
     28 * Tracepoints for VM enters
     29 */
     30DECLARE_EVENT_CLASS(kvm_transition,
     31	TP_PROTO(struct kvm_vcpu *vcpu),
     32	TP_ARGS(vcpu),
     33	TP_STRUCT__entry(
     34		__field(unsigned long, pc)
     35	),
     36
     37	TP_fast_assign(
     38		__entry->pc = vcpu->arch.pc;
     39	),
     40
     41	TP_printk("PC: 0x%08lx",
     42		  __entry->pc)
     43);
     44
     45DEFINE_EVENT(kvm_transition, kvm_enter,
     46	     TP_PROTO(struct kvm_vcpu *vcpu),
     47	     TP_ARGS(vcpu));
     48
     49DEFINE_EVENT(kvm_transition, kvm_reenter,
     50	     TP_PROTO(struct kvm_vcpu *vcpu),
     51	     TP_ARGS(vcpu));
     52
     53DEFINE_EVENT(kvm_transition, kvm_out,
     54	     TP_PROTO(struct kvm_vcpu *vcpu),
     55	     TP_ARGS(vcpu));
     56
     57/* The first 32 exit reasons correspond to Cause.ExcCode */
     58#define KVM_TRACE_EXIT_INT		 0
     59#define KVM_TRACE_EXIT_TLBMOD		 1
     60#define KVM_TRACE_EXIT_TLBMISS_LD	 2
     61#define KVM_TRACE_EXIT_TLBMISS_ST	 3
     62#define KVM_TRACE_EXIT_ADDRERR_LD	 4
     63#define KVM_TRACE_EXIT_ADDRERR_ST	 5
     64#define KVM_TRACE_EXIT_SYSCALL		 8
     65#define KVM_TRACE_EXIT_BREAK_INST	 9
     66#define KVM_TRACE_EXIT_RESVD_INST	10
     67#define KVM_TRACE_EXIT_COP_UNUSABLE	11
     68#define KVM_TRACE_EXIT_TRAP_INST	13
     69#define KVM_TRACE_EXIT_MSA_FPE		14
     70#define KVM_TRACE_EXIT_FPE		15
     71#define KVM_TRACE_EXIT_MSA_DISABLED	21
     72#define KVM_TRACE_EXIT_GUEST_EXIT	27
     73/* Further exit reasons */
     74#define KVM_TRACE_EXIT_WAIT		32
     75#define KVM_TRACE_EXIT_CACHE		33
     76#define KVM_TRACE_EXIT_SIGNAL		34
     77/* 32 exit reasons correspond to GuestCtl0.GExcCode (VZ) */
     78#define KVM_TRACE_EXIT_GEXCCODE_BASE	64
     79#define KVM_TRACE_EXIT_GPSI		64	/*  0 */
     80#define KVM_TRACE_EXIT_GSFC		65	/*  1 */
     81#define KVM_TRACE_EXIT_HC		66	/*  2 */
     82#define KVM_TRACE_EXIT_GRR		67	/*  3 */
     83#define KVM_TRACE_EXIT_GVA		72	/*  8 */
     84#define KVM_TRACE_EXIT_GHFC		73	/*  9 */
     85#define KVM_TRACE_EXIT_GPA		74	/* 10 */
     86
     87/* Tracepoints for VM exits */
     88#define kvm_trace_symbol_exit_types				\
     89	{ KVM_TRACE_EXIT_INT,		"Interrupt" },		\
     90	{ KVM_TRACE_EXIT_TLBMOD,	"TLB Mod" },		\
     91	{ KVM_TRACE_EXIT_TLBMISS_LD,	"TLB Miss (LD)" },	\
     92	{ KVM_TRACE_EXIT_TLBMISS_ST,	"TLB Miss (ST)" },	\
     93	{ KVM_TRACE_EXIT_ADDRERR_LD,	"Address Error (LD)" },	\
     94	{ KVM_TRACE_EXIT_ADDRERR_ST,	"Address Err (ST)" },	\
     95	{ KVM_TRACE_EXIT_SYSCALL,	"System Call" },	\
     96	{ KVM_TRACE_EXIT_BREAK_INST,	"Break Inst" },		\
     97	{ KVM_TRACE_EXIT_RESVD_INST,	"Reserved Inst" },	\
     98	{ KVM_TRACE_EXIT_COP_UNUSABLE,	"COP0/1 Unusable" },	\
     99	{ KVM_TRACE_EXIT_TRAP_INST,	"Trap Inst" },		\
    100	{ KVM_TRACE_EXIT_MSA_FPE,	"MSA FPE" },		\
    101	{ KVM_TRACE_EXIT_FPE,		"FPE" },		\
    102	{ KVM_TRACE_EXIT_MSA_DISABLED,	"MSA Disabled" },	\
    103	{ KVM_TRACE_EXIT_GUEST_EXIT,	"Guest Exit" },		\
    104	{ KVM_TRACE_EXIT_WAIT,		"WAIT" },		\
    105	{ KVM_TRACE_EXIT_CACHE,		"CACHE" },		\
    106	{ KVM_TRACE_EXIT_SIGNAL,	"Signal" },		\
    107	{ KVM_TRACE_EXIT_GPSI,		"GPSI" },		\
    108	{ KVM_TRACE_EXIT_GSFC,		"GSFC" },		\
    109	{ KVM_TRACE_EXIT_HC,		"HC" },			\
    110	{ KVM_TRACE_EXIT_GRR,		"GRR" },		\
    111	{ KVM_TRACE_EXIT_GVA,		"GVA" },		\
    112	{ KVM_TRACE_EXIT_GHFC,		"GHFC" },		\
    113	{ KVM_TRACE_EXIT_GPA,		"GPA" }
    114
    115TRACE_EVENT(kvm_exit,
    116	    TP_PROTO(struct kvm_vcpu *vcpu, unsigned int reason),
    117	    TP_ARGS(vcpu, reason),
    118	    TP_STRUCT__entry(
    119			__field(unsigned long, pc)
    120			__field(unsigned int, reason)
    121	    ),
    122
    123	    TP_fast_assign(
    124			__entry->pc = vcpu->arch.pc;
    125			__entry->reason = reason;
    126	    ),
    127
    128	    TP_printk("[%s]PC: 0x%08lx",
    129		      __print_symbolic(__entry->reason,
    130				       kvm_trace_symbol_exit_types),
    131		      __entry->pc)
    132);
    133
    134#define KVM_TRACE_MFC0		0
    135#define KVM_TRACE_MTC0		1
    136#define KVM_TRACE_DMFC0		2
    137#define KVM_TRACE_DMTC0		3
    138#define KVM_TRACE_RDHWR		4
    139
    140#define KVM_TRACE_HWR_COP0	0
    141#define KVM_TRACE_HWR_HWR	1
    142
    143#define KVM_TRACE_COP0(REG, SEL)	((KVM_TRACE_HWR_COP0 << 8) |	\
    144					 ((REG) << 3) | (SEL))
    145#define KVM_TRACE_HWR(REG, SEL)		((KVM_TRACE_HWR_HWR  << 8) |	\
    146					 ((REG) << 3) | (SEL))
    147
    148#define kvm_trace_symbol_hwr_ops				\
    149	{ KVM_TRACE_MFC0,		"MFC0" },		\
    150	{ KVM_TRACE_MTC0,		"MTC0" },		\
    151	{ KVM_TRACE_DMFC0,		"DMFC0" },		\
    152	{ KVM_TRACE_DMTC0,		"DMTC0" },		\
    153	{ KVM_TRACE_RDHWR,		"RDHWR" }
    154
    155#define kvm_trace_symbol_hwr_cop				\
    156	{ KVM_TRACE_HWR_COP0,		"COP0" },		\
    157	{ KVM_TRACE_HWR_HWR,		"HWR" }
    158
    159#define kvm_trace_symbol_hwr_regs				\
    160	{ KVM_TRACE_COP0( 0, 0),	"Index" },		\
    161	{ KVM_TRACE_COP0( 2, 0),	"EntryLo0" },		\
    162	{ KVM_TRACE_COP0( 3, 0),	"EntryLo1" },		\
    163	{ KVM_TRACE_COP0( 4, 0),	"Context" },		\
    164	{ KVM_TRACE_COP0( 4, 2),	"UserLocal" },		\
    165	{ KVM_TRACE_COP0( 5, 0),	"PageMask" },		\
    166	{ KVM_TRACE_COP0( 6, 0),	"Wired" },		\
    167	{ KVM_TRACE_COP0( 7, 0),	"HWREna" },		\
    168	{ KVM_TRACE_COP0( 8, 0),	"BadVAddr" },		\
    169	{ KVM_TRACE_COP0( 9, 0),	"Count" },		\
    170	{ KVM_TRACE_COP0(10, 0),	"EntryHi" },		\
    171	{ KVM_TRACE_COP0(11, 0),	"Compare" },		\
    172	{ KVM_TRACE_COP0(12, 0),	"Status" },		\
    173	{ KVM_TRACE_COP0(12, 1),	"IntCtl" },		\
    174	{ KVM_TRACE_COP0(12, 2),	"SRSCtl" },		\
    175	{ KVM_TRACE_COP0(13, 0),	"Cause" },		\
    176	{ KVM_TRACE_COP0(14, 0),	"EPC" },		\
    177	{ KVM_TRACE_COP0(15, 0),	"PRId" },		\
    178	{ KVM_TRACE_COP0(15, 1),	"EBase" },		\
    179	{ KVM_TRACE_COP0(16, 0),	"Config" },		\
    180	{ KVM_TRACE_COP0(16, 1),	"Config1" },		\
    181	{ KVM_TRACE_COP0(16, 2),	"Config2" },		\
    182	{ KVM_TRACE_COP0(16, 3),	"Config3" },		\
    183	{ KVM_TRACE_COP0(16, 4),	"Config4" },		\
    184	{ KVM_TRACE_COP0(16, 5),	"Config5" },		\
    185	{ KVM_TRACE_COP0(16, 7),	"Config7" },		\
    186	{ KVM_TRACE_COP0(17, 1),	"MAAR" },		\
    187	{ KVM_TRACE_COP0(17, 2),	"MAARI" },		\
    188	{ KVM_TRACE_COP0(26, 0),	"ECC" },		\
    189	{ KVM_TRACE_COP0(30, 0),	"ErrorEPC" },		\
    190	{ KVM_TRACE_COP0(31, 2),	"KScratch1" },		\
    191	{ KVM_TRACE_COP0(31, 3),	"KScratch2" },		\
    192	{ KVM_TRACE_COP0(31, 4),	"KScratch3" },		\
    193	{ KVM_TRACE_COP0(31, 5),	"KScratch4" },		\
    194	{ KVM_TRACE_COP0(31, 6),	"KScratch5" },		\
    195	{ KVM_TRACE_COP0(31, 7),	"KScratch6" },		\
    196	{ KVM_TRACE_HWR( 0, 0),		"CPUNum" },		\
    197	{ KVM_TRACE_HWR( 1, 0),		"SYNCI_Step" },		\
    198	{ KVM_TRACE_HWR( 2, 0),		"CC" },			\
    199	{ KVM_TRACE_HWR( 3, 0),		"CCRes" },		\
    200	{ KVM_TRACE_HWR(29, 0),		"ULR" }
    201
    202TRACE_EVENT(kvm_hwr,
    203	    TP_PROTO(struct kvm_vcpu *vcpu, unsigned int op, unsigned int reg,
    204		     unsigned long val),
    205	    TP_ARGS(vcpu, op, reg, val),
    206	    TP_STRUCT__entry(
    207			__field(unsigned long, val)
    208			__field(u16, reg)
    209			__field(u8, op)
    210	    ),
    211
    212	    TP_fast_assign(
    213			__entry->val = val;
    214			__entry->reg = reg;
    215			__entry->op = op;
    216	    ),
    217
    218	    TP_printk("%s %s (%s:%u:%u) 0x%08lx",
    219		      __print_symbolic(__entry->op,
    220				       kvm_trace_symbol_hwr_ops),
    221		      __print_symbolic(__entry->reg,
    222				       kvm_trace_symbol_hwr_regs),
    223		      __print_symbolic(__entry->reg >> 8,
    224				       kvm_trace_symbol_hwr_cop),
    225		      (__entry->reg >> 3) & 0x1f,
    226		      __entry->reg & 0x7,
    227		      __entry->val)
    228);
    229
    230#define KVM_TRACE_AUX_RESTORE		0
    231#define KVM_TRACE_AUX_SAVE		1
    232#define KVM_TRACE_AUX_ENABLE		2
    233#define KVM_TRACE_AUX_DISABLE		3
    234#define KVM_TRACE_AUX_DISCARD		4
    235
    236#define KVM_TRACE_AUX_FPU		1
    237#define KVM_TRACE_AUX_MSA		2
    238#define KVM_TRACE_AUX_FPU_MSA		3
    239
    240#define kvm_trace_symbol_aux_op		\
    241	{ KVM_TRACE_AUX_RESTORE, "restore" },	\
    242	{ KVM_TRACE_AUX_SAVE,    "save" },	\
    243	{ KVM_TRACE_AUX_ENABLE,  "enable" },	\
    244	{ KVM_TRACE_AUX_DISABLE, "disable" },	\
    245	{ KVM_TRACE_AUX_DISCARD, "discard" }
    246
    247#define kvm_trace_symbol_aux_state		\
    248	{ KVM_TRACE_AUX_FPU,     "FPU" },	\
    249	{ KVM_TRACE_AUX_MSA,     "MSA" },	\
    250	{ KVM_TRACE_AUX_FPU_MSA, "FPU & MSA" }
    251
    252TRACE_EVENT(kvm_aux,
    253	    TP_PROTO(struct kvm_vcpu *vcpu, unsigned int op,
    254		     unsigned int state),
    255	    TP_ARGS(vcpu, op, state),
    256	    TP_STRUCT__entry(
    257			__field(unsigned long, pc)
    258			__field(u8, op)
    259			__field(u8, state)
    260	    ),
    261
    262	    TP_fast_assign(
    263			__entry->pc = vcpu->arch.pc;
    264			__entry->op = op;
    265			__entry->state = state;
    266	    ),
    267
    268	    TP_printk("%s %s PC: 0x%08lx",
    269		      __print_symbolic(__entry->op,
    270				       kvm_trace_symbol_aux_op),
    271		      __print_symbolic(__entry->state,
    272				       kvm_trace_symbol_aux_state),
    273		      __entry->pc)
    274);
    275
    276TRACE_EVENT(kvm_asid_change,
    277	    TP_PROTO(struct kvm_vcpu *vcpu, unsigned int old_asid,
    278		     unsigned int new_asid),
    279	    TP_ARGS(vcpu, old_asid, new_asid),
    280	    TP_STRUCT__entry(
    281			__field(unsigned long, pc)
    282			__field(u8, old_asid)
    283			__field(u8, new_asid)
    284	    ),
    285
    286	    TP_fast_assign(
    287			__entry->pc = vcpu->arch.pc;
    288			__entry->old_asid = old_asid;
    289			__entry->new_asid = new_asid;
    290	    ),
    291
    292	    TP_printk("PC: 0x%08lx old: 0x%02x new: 0x%02x",
    293		      __entry->pc,
    294		      __entry->old_asid,
    295		      __entry->new_asid)
    296);
    297
    298TRACE_EVENT(kvm_guestid_change,
    299	    TP_PROTO(struct kvm_vcpu *vcpu, unsigned int guestid),
    300	    TP_ARGS(vcpu, guestid),
    301	    TP_STRUCT__entry(
    302			__field(unsigned int, guestid)
    303	    ),
    304
    305	    TP_fast_assign(
    306			__entry->guestid = guestid;
    307	    ),
    308
    309	    TP_printk("GuestID: 0x%02x",
    310		      __entry->guestid)
    311);
    312
    313TRACE_EVENT_FN(kvm_guest_mode_change,
    314	    TP_PROTO(struct kvm_vcpu *vcpu),
    315	    TP_ARGS(vcpu),
    316	    TP_STRUCT__entry(
    317			__field(unsigned long, epc)
    318			__field(unsigned long, pc)
    319			__field(unsigned long, badvaddr)
    320			__field(unsigned int, status)
    321			__field(unsigned int, cause)
    322	    ),
    323
    324	    TP_fast_assign(
    325			__entry->epc = kvm_read_c0_guest_epc(vcpu->arch.cop0);
    326			__entry->pc = vcpu->arch.pc;
    327			__entry->badvaddr = kvm_read_c0_guest_badvaddr(vcpu->arch.cop0);
    328			__entry->status = kvm_read_c0_guest_status(vcpu->arch.cop0);
    329			__entry->cause = kvm_read_c0_guest_cause(vcpu->arch.cop0);
    330	    ),
    331
    332	    TP_printk("EPC: 0x%08lx PC: 0x%08lx Status: 0x%08x Cause: 0x%08x BadVAddr: 0x%08lx",
    333		      __entry->epc,
    334		      __entry->pc,
    335		      __entry->status,
    336		      __entry->cause,
    337		      __entry->badvaddr),
    338
    339	    kvm_guest_mode_change_trace_reg,
    340	    kvm_guest_mode_change_trace_unreg
    341);
    342
    343#endif /* _TRACE_KVM_H */
    344
    345/* This part must be outside protection */
    346#include <trace/define_trace.h>