mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-24 11:34:50 +08:00
b5905dc12e
The ARM architecture only saves the exit class to the HSR (ESR_EL2 for arm64) on synchronous exceptions, not on asynchronous exceptions like an IRQ. However, we only report the exception class on kvm_exit, which is confusing because an IRQ looks like it exited at some PC with the same reason as the previous exit. Add a lookup table for the exception index and prepend the kvm_exit tracepoint text with the exception type to clarify this situation. Also resolve the exception class (EC) to a human-friendly text version so the trace output becomes immediately usable for debugging this code. Cc: Wei Huang <wei@redhat.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
333 lines
7.2 KiB
C
333 lines
7.2 KiB
C
#if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_KVM_H
|
|
|
|
#include <linux/tracepoint.h>
|
|
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM kvm
|
|
|
|
/*
|
|
* Tracepoints for entry/exit to guest
|
|
*/
|
|
TRACE_EVENT(kvm_entry,
|
|
TP_PROTO(unsigned long vcpu_pc),
|
|
TP_ARGS(vcpu_pc),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, vcpu_pc )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->vcpu_pc = vcpu_pc;
|
|
),
|
|
|
|
TP_printk("PC: 0x%08lx", __entry->vcpu_pc)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_exit,
|
|
TP_PROTO(int idx, unsigned int exit_reason, unsigned long vcpu_pc),
|
|
TP_ARGS(idx, exit_reason, vcpu_pc),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( int, idx )
|
|
__field( unsigned int, exit_reason )
|
|
__field( unsigned long, vcpu_pc )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->idx = idx;
|
|
__entry->exit_reason = exit_reason;
|
|
__entry->vcpu_pc = vcpu_pc;
|
|
),
|
|
|
|
TP_printk("%s: HSR_EC: 0x%04x (%s), PC: 0x%08lx",
|
|
__print_symbolic(__entry->idx, kvm_arm_exception_type),
|
|
__entry->exit_reason,
|
|
__print_symbolic(__entry->exit_reason, kvm_arm_exception_class),
|
|
__entry->vcpu_pc)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_guest_fault,
|
|
TP_PROTO(unsigned long vcpu_pc, unsigned long hsr,
|
|
unsigned long hxfar,
|
|
unsigned long long ipa),
|
|
TP_ARGS(vcpu_pc, hsr, hxfar, ipa),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, vcpu_pc )
|
|
__field( unsigned long, hsr )
|
|
__field( unsigned long, hxfar )
|
|
__field( unsigned long long, ipa )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->vcpu_pc = vcpu_pc;
|
|
__entry->hsr = hsr;
|
|
__entry->hxfar = hxfar;
|
|
__entry->ipa = ipa;
|
|
),
|
|
|
|
TP_printk("ipa %#llx, hsr %#08lx, hxfar %#08lx, pc %#08lx",
|
|
__entry->ipa, __entry->hsr,
|
|
__entry->hxfar, __entry->vcpu_pc)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_access_fault,
|
|
TP_PROTO(unsigned long ipa),
|
|
TP_ARGS(ipa),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, ipa )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->ipa = ipa;
|
|
),
|
|
|
|
TP_printk("IPA: %lx", __entry->ipa)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_irq_line,
|
|
TP_PROTO(unsigned int type, int vcpu_idx, int irq_num, int level),
|
|
TP_ARGS(type, vcpu_idx, irq_num, level),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned int, type )
|
|
__field( int, vcpu_idx )
|
|
__field( int, irq_num )
|
|
__field( int, level )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->type = type;
|
|
__entry->vcpu_idx = vcpu_idx;
|
|
__entry->irq_num = irq_num;
|
|
__entry->level = level;
|
|
),
|
|
|
|
TP_printk("Inject %s interrupt (%d), vcpu->idx: %d, num: %d, level: %d",
|
|
(__entry->type == KVM_ARM_IRQ_TYPE_CPU) ? "CPU" :
|
|
(__entry->type == KVM_ARM_IRQ_TYPE_PPI) ? "VGIC PPI" :
|
|
(__entry->type == KVM_ARM_IRQ_TYPE_SPI) ? "VGIC SPI" : "UNKNOWN",
|
|
__entry->type, __entry->vcpu_idx, __entry->irq_num, __entry->level)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_mmio_emulate,
|
|
TP_PROTO(unsigned long vcpu_pc, unsigned long instr,
|
|
unsigned long cpsr),
|
|
TP_ARGS(vcpu_pc, instr, cpsr),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, vcpu_pc )
|
|
__field( unsigned long, instr )
|
|
__field( unsigned long, cpsr )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->vcpu_pc = vcpu_pc;
|
|
__entry->instr = instr;
|
|
__entry->cpsr = cpsr;
|
|
),
|
|
|
|
TP_printk("Emulate MMIO at: 0x%08lx (instr: %08lx, cpsr: %08lx)",
|
|
__entry->vcpu_pc, __entry->instr, __entry->cpsr)
|
|
);
|
|
|
|
/* Architecturally implementation defined CP15 register access */
|
|
TRACE_EVENT(kvm_emulate_cp15_imp,
|
|
TP_PROTO(unsigned long Op1, unsigned long Rt1, unsigned long CRn,
|
|
unsigned long CRm, unsigned long Op2, bool is_write),
|
|
TP_ARGS(Op1, Rt1, CRn, CRm, Op2, is_write),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned int, Op1 )
|
|
__field( unsigned int, Rt1 )
|
|
__field( unsigned int, CRn )
|
|
__field( unsigned int, CRm )
|
|
__field( unsigned int, Op2 )
|
|
__field( bool, is_write )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->is_write = is_write;
|
|
__entry->Op1 = Op1;
|
|
__entry->Rt1 = Rt1;
|
|
__entry->CRn = CRn;
|
|
__entry->CRm = CRm;
|
|
__entry->Op2 = Op2;
|
|
),
|
|
|
|
TP_printk("Implementation defined CP15: %s\tp15, %u, r%u, c%u, c%u, %u",
|
|
(__entry->is_write) ? "mcr" : "mrc",
|
|
__entry->Op1, __entry->Rt1, __entry->CRn,
|
|
__entry->CRm, __entry->Op2)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_wfx,
|
|
TP_PROTO(unsigned long vcpu_pc, bool is_wfe),
|
|
TP_ARGS(vcpu_pc, is_wfe),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, vcpu_pc )
|
|
__field( bool, is_wfe )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->vcpu_pc = vcpu_pc;
|
|
__entry->is_wfe = is_wfe;
|
|
),
|
|
|
|
TP_printk("guest executed wf%c at: 0x%08lx",
|
|
__entry->is_wfe ? 'e' : 'i', __entry->vcpu_pc)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_unmap_hva,
|
|
TP_PROTO(unsigned long hva),
|
|
TP_ARGS(hva),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, hva )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->hva = hva;
|
|
),
|
|
|
|
TP_printk("mmu notifier unmap hva: %#08lx", __entry->hva)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_unmap_hva_range,
|
|
TP_PROTO(unsigned long start, unsigned long end),
|
|
TP_ARGS(start, end),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, start )
|
|
__field( unsigned long, end )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->start = start;
|
|
__entry->end = end;
|
|
),
|
|
|
|
TP_printk("mmu notifier unmap range: %#08lx -- %#08lx",
|
|
__entry->start, __entry->end)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_set_spte_hva,
|
|
TP_PROTO(unsigned long hva),
|
|
TP_ARGS(hva),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, hva )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->hva = hva;
|
|
),
|
|
|
|
TP_printk("mmu notifier set pte hva: %#08lx", __entry->hva)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_age_hva,
|
|
TP_PROTO(unsigned long start, unsigned long end),
|
|
TP_ARGS(start, end),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, start )
|
|
__field( unsigned long, end )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->start = start;
|
|
__entry->end = end;
|
|
),
|
|
|
|
TP_printk("mmu notifier age hva: %#08lx -- %#08lx",
|
|
__entry->start, __entry->end)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_test_age_hva,
|
|
TP_PROTO(unsigned long hva),
|
|
TP_ARGS(hva),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, hva )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->hva = hva;
|
|
),
|
|
|
|
TP_printk("mmu notifier test age hva: %#08lx", __entry->hva)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_hvc,
|
|
TP_PROTO(unsigned long vcpu_pc, unsigned long r0, unsigned long imm),
|
|
TP_ARGS(vcpu_pc, r0, imm),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, vcpu_pc )
|
|
__field( unsigned long, r0 )
|
|
__field( unsigned long, imm )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->vcpu_pc = vcpu_pc;
|
|
__entry->r0 = r0;
|
|
__entry->imm = imm;
|
|
),
|
|
|
|
TP_printk("HVC at 0x%08lx (r0: 0x%08lx, imm: 0x%lx",
|
|
__entry->vcpu_pc, __entry->r0, __entry->imm)
|
|
);
|
|
|
|
TRACE_EVENT(kvm_set_way_flush,
|
|
TP_PROTO(unsigned long vcpu_pc, bool cache),
|
|
TP_ARGS(vcpu_pc, cache),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, vcpu_pc )
|
|
__field( bool, cache )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->vcpu_pc = vcpu_pc;
|
|
__entry->cache = cache;
|
|
),
|
|
|
|
TP_printk("S/W flush at 0x%016lx (cache %s)",
|
|
__entry->vcpu_pc, __entry->cache ? "on" : "off")
|
|
);
|
|
|
|
TRACE_EVENT(kvm_toggle_cache,
|
|
TP_PROTO(unsigned long vcpu_pc, bool was, bool now),
|
|
TP_ARGS(vcpu_pc, was, now),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, vcpu_pc )
|
|
__field( bool, was )
|
|
__field( bool, now )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->vcpu_pc = vcpu_pc;
|
|
__entry->was = was;
|
|
__entry->now = now;
|
|
),
|
|
|
|
TP_printk("VM op at 0x%016lx (cache was %s, now %s)",
|
|
__entry->vcpu_pc, __entry->was ? "on" : "off",
|
|
__entry->now ? "on" : "off")
|
|
);
|
|
|
|
#endif /* _TRACE_KVM_H */
|
|
|
|
#undef TRACE_INCLUDE_PATH
|
|
#define TRACE_INCLUDE_PATH arch/arm/kvm
|
|
#undef TRACE_INCLUDE_FILE
|
|
#define TRACE_INCLUDE_FILE trace
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|