mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 16:12:02 +00:00
3c038e6be0
This patch enables async page faults for s390 kvm guests. It provides the userspace API to enable and disable_wait this feature. The disable_wait will enforce that the feature is off by waiting on it. Also it includes the diagnose code, called by the guest to enable async page faults. The async page faults will use an already existing guest interface for this purpose, as described in "CP Programming Services (SC24-6084)". Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
390 lines
9.4 KiB
C
390 lines
9.4 KiB
C
#if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_KVM_H
|
|
|
|
#include <linux/tracepoint.h>
|
|
#include <asm/sigp.h>
|
|
#include <asm/debug.h>
|
|
#include <asm/dis.h>
|
|
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM kvm
|
|
#define TRACE_INCLUDE_PATH .
|
|
#undef TRACE_INCLUDE_FILE
|
|
#define TRACE_INCLUDE_FILE trace
|
|
|
|
/*
|
|
* Helpers for vcpu-specific tracepoints containing the same information
|
|
* as s390dbf VCPU_EVENTs.
|
|
*/
|
|
#define VCPU_PROTO_COMMON struct kvm_vcpu *vcpu
|
|
#define VCPU_ARGS_COMMON vcpu
|
|
#define VCPU_FIELD_COMMON __field(int, id) \
|
|
__field(unsigned long, pswmask) \
|
|
__field(unsigned long, pswaddr)
|
|
#define VCPU_ASSIGN_COMMON do { \
|
|
__entry->id = vcpu->vcpu_id; \
|
|
__entry->pswmask = vcpu->arch.sie_block->gpsw.mask; \
|
|
__entry->pswaddr = vcpu->arch.sie_block->gpsw.addr; \
|
|
} while (0);
|
|
#define VCPU_TP_PRINTK(p_str, p_args...) \
|
|
TP_printk("%02d[%016lx-%016lx]: " p_str, __entry->id, \
|
|
__entry->pswmask, __entry->pswaddr, p_args)
|
|
|
|
TRACE_EVENT(kvm_s390_major_guest_pfault,
|
|
TP_PROTO(VCPU_PROTO_COMMON),
|
|
TP_ARGS(VCPU_ARGS_COMMON),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
),
|
|
VCPU_TP_PRINTK("%s", "major fault, maybe applicable for pfault")
|
|
);
|
|
|
|
TRACE_EVENT(kvm_s390_pfault_init,
|
|
TP_PROTO(VCPU_PROTO_COMMON, long pfault_token),
|
|
TP_ARGS(VCPU_ARGS_COMMON, pfault_token),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(long, pfault_token)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->pfault_token = pfault_token;
|
|
),
|
|
VCPU_TP_PRINTK("init pfault token %ld", __entry->pfault_token)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_s390_pfault_done,
|
|
TP_PROTO(VCPU_PROTO_COMMON, long pfault_token),
|
|
TP_ARGS(VCPU_ARGS_COMMON, pfault_token),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(long, pfault_token)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->pfault_token = pfault_token;
|
|
),
|
|
VCPU_TP_PRINTK("done pfault token %ld", __entry->pfault_token)
|
|
);
|
|
|
|
/*
|
|
* Tracepoints for SIE entry and exit.
|
|
*/
|
|
TRACE_EVENT(kvm_s390_sie_enter,
|
|
TP_PROTO(VCPU_PROTO_COMMON, int cpuflags),
|
|
TP_ARGS(VCPU_ARGS_COMMON, cpuflags),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(int, cpuflags)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->cpuflags = cpuflags;
|
|
),
|
|
|
|
VCPU_TP_PRINTK("entering sie flags %x", __entry->cpuflags)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_s390_sie_fault,
|
|
TP_PROTO(VCPU_PROTO_COMMON),
|
|
TP_ARGS(VCPU_ARGS_COMMON),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
),
|
|
|
|
VCPU_TP_PRINTK("%s", "fault in sie instruction")
|
|
);
|
|
|
|
#define sie_intercept_code \
|
|
{0x04, "Instruction"}, \
|
|
{0x08, "Program interruption"}, \
|
|
{0x0C, "Instruction and program interruption"}, \
|
|
{0x10, "External request"}, \
|
|
{0x14, "External interruption"}, \
|
|
{0x18, "I/O request"}, \
|
|
{0x1C, "Wait state"}, \
|
|
{0x20, "Validity"}, \
|
|
{0x28, "Stop request"}
|
|
|
|
TRACE_EVENT(kvm_s390_sie_exit,
|
|
TP_PROTO(VCPU_PROTO_COMMON, u8 icptcode),
|
|
TP_ARGS(VCPU_ARGS_COMMON, icptcode),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(u8, icptcode)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->icptcode = icptcode;
|
|
),
|
|
|
|
VCPU_TP_PRINTK("exit sie icptcode %d (%s)", __entry->icptcode,
|
|
__print_symbolic(__entry->icptcode,
|
|
sie_intercept_code))
|
|
);
|
|
|
|
/*
|
|
* Trace point for intercepted instructions.
|
|
*/
|
|
TRACE_EVENT(kvm_s390_intercept_instruction,
|
|
TP_PROTO(VCPU_PROTO_COMMON, __u16 ipa, __u32 ipb),
|
|
TP_ARGS(VCPU_ARGS_COMMON, ipa, ipb),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(__u64, instruction)
|
|
__field(char, insn[8])
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->instruction = ((__u64)ipa << 48) |
|
|
((__u64)ipb << 16);
|
|
),
|
|
|
|
VCPU_TP_PRINTK("intercepted instruction %016llx (%s)",
|
|
__entry->instruction,
|
|
insn_to_mnemonic((unsigned char *)
|
|
&__entry->instruction,
|
|
__entry->insn, sizeof(__entry->insn)) ?
|
|
"unknown" : __entry->insn)
|
|
);
|
|
|
|
/*
|
|
* Trace point for intercepted program interruptions.
|
|
*/
|
|
TRACE_EVENT(kvm_s390_intercept_prog,
|
|
TP_PROTO(VCPU_PROTO_COMMON, __u16 code),
|
|
TP_ARGS(VCPU_ARGS_COMMON, code),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(__u16, code)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->code = code;
|
|
),
|
|
|
|
VCPU_TP_PRINTK("intercepted program interruption %04x",
|
|
__entry->code)
|
|
);
|
|
|
|
/*
|
|
* Trace point for validity intercepts.
|
|
*/
|
|
TRACE_EVENT(kvm_s390_intercept_validity,
|
|
TP_PROTO(VCPU_PROTO_COMMON, __u16 viwhy),
|
|
TP_ARGS(VCPU_ARGS_COMMON, viwhy),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(__u16, viwhy)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->viwhy = viwhy;
|
|
),
|
|
|
|
VCPU_TP_PRINTK("got validity intercept %04x", __entry->viwhy)
|
|
);
|
|
|
|
/*
|
|
* Trace points for instructions that are of special interest.
|
|
*/
|
|
|
|
#define sigp_order_codes \
|
|
{SIGP_SENSE, "sense"}, \
|
|
{SIGP_EXTERNAL_CALL, "external call"}, \
|
|
{SIGP_EMERGENCY_SIGNAL, "emergency signal"}, \
|
|
{SIGP_STOP, "stop"}, \
|
|
{SIGP_STOP_AND_STORE_STATUS, "stop and store status"}, \
|
|
{SIGP_SET_ARCHITECTURE, "set architecture"}, \
|
|
{SIGP_SET_PREFIX, "set prefix"}, \
|
|
{SIGP_STORE_STATUS_AT_ADDRESS, "store status at addr"}, \
|
|
{SIGP_SENSE_RUNNING, "sense running"}, \
|
|
{SIGP_RESTART, "restart"}
|
|
|
|
TRACE_EVENT(kvm_s390_handle_sigp,
|
|
TP_PROTO(VCPU_PROTO_COMMON, __u8 order_code, __u16 cpu_addr, \
|
|
__u32 parameter),
|
|
TP_ARGS(VCPU_ARGS_COMMON, order_code, cpu_addr, parameter),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(__u8, order_code)
|
|
__field(__u16, cpu_addr)
|
|
__field(__u32, parameter)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->order_code = order_code;
|
|
__entry->cpu_addr = cpu_addr;
|
|
__entry->parameter = parameter;
|
|
),
|
|
|
|
VCPU_TP_PRINTK("handle sigp order %02x (%s), cpu address %04x, " \
|
|
"parameter %08x", __entry->order_code,
|
|
__print_symbolic(__entry->order_code,
|
|
sigp_order_codes),
|
|
__entry->cpu_addr, __entry->parameter)
|
|
);
|
|
|
|
#define diagnose_codes \
|
|
{0x10, "release pages"}, \
|
|
{0x44, "time slice end"}, \
|
|
{0x308, "ipl functions"}, \
|
|
{0x500, "kvm hypercall"}, \
|
|
{0x501, "kvm breakpoint"}
|
|
|
|
TRACE_EVENT(kvm_s390_handle_diag,
|
|
TP_PROTO(VCPU_PROTO_COMMON, __u16 code),
|
|
TP_ARGS(VCPU_ARGS_COMMON, code),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(__u16, code)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->code = code;
|
|
),
|
|
|
|
VCPU_TP_PRINTK("handle diagnose call %04x (%s)", __entry->code,
|
|
__print_symbolic(__entry->code, diagnose_codes))
|
|
);
|
|
|
|
TRACE_EVENT(kvm_s390_handle_lctl,
|
|
TP_PROTO(VCPU_PROTO_COMMON, int g, int reg1, int reg3, u64 addr),
|
|
TP_ARGS(VCPU_ARGS_COMMON, g, reg1, reg3, addr),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(int, g)
|
|
__field(int, reg1)
|
|
__field(int, reg3)
|
|
__field(u64, addr)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->g = g;
|
|
__entry->reg1 = reg1;
|
|
__entry->reg3 = reg3;
|
|
__entry->addr = addr;
|
|
),
|
|
|
|
VCPU_TP_PRINTK("%s: loading cr %x-%x from %016llx",
|
|
__entry->g ? "lctlg" : "lctl",
|
|
__entry->reg1, __entry->reg3, __entry->addr)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_s390_handle_prefix,
|
|
TP_PROTO(VCPU_PROTO_COMMON, int set, u32 address),
|
|
TP_ARGS(VCPU_ARGS_COMMON, set, address),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(int, set)
|
|
__field(u32, address)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->set = set;
|
|
__entry->address = address;
|
|
),
|
|
|
|
VCPU_TP_PRINTK("%s prefix to %08x",
|
|
__entry->set ? "setting" : "storing",
|
|
__entry->address)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_s390_handle_stap,
|
|
TP_PROTO(VCPU_PROTO_COMMON, u64 address),
|
|
TP_ARGS(VCPU_ARGS_COMMON, address),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(u64, address)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->address = address;
|
|
),
|
|
|
|
VCPU_TP_PRINTK("storing cpu address to %016llx",
|
|
__entry->address)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_s390_handle_stfl,
|
|
TP_PROTO(VCPU_PROTO_COMMON, unsigned int facility_list),
|
|
TP_ARGS(VCPU_ARGS_COMMON, facility_list),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(unsigned int, facility_list)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->facility_list = facility_list;
|
|
),
|
|
|
|
VCPU_TP_PRINTK("store facility list value %08x",
|
|
__entry->facility_list)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_s390_handle_stsi,
|
|
TP_PROTO(VCPU_PROTO_COMMON, int fc, int sel1, int sel2, u64 addr),
|
|
TP_ARGS(VCPU_ARGS_COMMON, fc, sel1, sel2, addr),
|
|
|
|
TP_STRUCT__entry(
|
|
VCPU_FIELD_COMMON
|
|
__field(int, fc)
|
|
__field(int, sel1)
|
|
__field(int, sel2)
|
|
__field(u64, addr)
|
|
),
|
|
|
|
TP_fast_assign(
|
|
VCPU_ASSIGN_COMMON
|
|
__entry->fc = fc;
|
|
__entry->sel1 = sel1;
|
|
__entry->sel2 = sel2;
|
|
__entry->addr = addr;
|
|
),
|
|
|
|
VCPU_TP_PRINTK("STSI %d.%d.%d information stored to %016llx",
|
|
__entry->fc, __entry->sel1, __entry->sel2,
|
|
__entry->addr)
|
|
);
|
|
|
|
#endif /* _TRACE_KVM_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|