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linux/arch/arm/kvm/trace.h

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KVM: ARM: Initial skeleton to compile KVM support Targets KVM support for Cortex A-15 processors. Contains all the framework components, make files, header files, some tracing functionality, and basic user space API. Only supported core is Cortex-A15 for now. Most functionality is in arch/arm/kvm/* or arch/arm/include/asm/kvm_*.h. Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
2013-01-20 18:28:06 -05:00
#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
KVM: ARM: Emulation framework and CP15 emulation Adds a new important function in the main KVM/ARM code called handle_exit() which is called from kvm_arch_vcpu_ioctl_run() on returns from guest execution. This function examines the Hyp-Syndrome-Register (HSR), which contains information telling KVM what caused the exit from the guest. Some of the reasons for an exit are CP15 accesses, which are not allowed from the guest and this commit handles these exits by emulating the intended operation in software and skipping the guest instruction. Minor notes about the coproc register reset: 1) We reserve a value of 0 as an invalid cp15 offset, to catch bugs in our table, at cost of 4 bytes per vcpu. 2) Added comments on the table indicating how we handle each register, for simplicity of understanding. Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
2013-01-20 18:28:09 -05:00
/* 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)
);
ARM: KVM: extend WFI tracepoint to differentiate between wfi and wfe Currently the trace printk talks about "wfi" only, though the trace point triggers both on wfi and wfe traps. Add a parameter to differentiate between the two. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Wei Huang <wei@redhat.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-01-12 16:56:16 +00:00
TRACE_EVENT(kvm_wfx,
TP_PROTO(unsigned long vcpu_pc, bool is_wfe),
TP_ARGS(vcpu_pc, is_wfe),
KVM: ARM: Emulation framework and CP15 emulation Adds a new important function in the main KVM/ARM code called handle_exit() which is called from kvm_arch_vcpu_ioctl_run() on returns from guest execution. This function examines the Hyp-Syndrome-Register (HSR), which contains information telling KVM what caused the exit from the guest. Some of the reasons for an exit are CP15 accesses, which are not allowed from the guest and this commit handles these exits by emulating the intended operation in software and skipping the guest instruction. Minor notes about the coproc register reset: 1) We reserve a value of 0 as an invalid cp15 offset, to catch bugs in our table, at cost of 4 bytes per vcpu. 2) Added comments on the table indicating how we handle each register, for simplicity of understanding. Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
2013-01-20 18:28:09 -05:00
TP_STRUCT__entry(
__field( unsigned long, vcpu_pc )
ARM: KVM: extend WFI tracepoint to differentiate between wfi and wfe Currently the trace printk talks about "wfi" only, though the trace point triggers both on wfi and wfe traps. Add a parameter to differentiate between the two. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Wei Huang <wei@redhat.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-01-12 16:56:16 +00:00
__field( bool, is_wfe )
KVM: ARM: Emulation framework and CP15 emulation Adds a new important function in the main KVM/ARM code called handle_exit() which is called from kvm_arch_vcpu_ioctl_run() on returns from guest execution. This function examines the Hyp-Syndrome-Register (HSR), which contains information telling KVM what caused the exit from the guest. Some of the reasons for an exit are CP15 accesses, which are not allowed from the guest and this commit handles these exits by emulating the intended operation in software and skipping the guest instruction. Minor notes about the coproc register reset: 1) We reserve a value of 0 as an invalid cp15 offset, to catch bugs in our table, at cost of 4 bytes per vcpu. 2) Added comments on the table indicating how we handle each register, for simplicity of understanding. Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
2013-01-20 18:28:09 -05:00
),
TP_fast_assign(
__entry->vcpu_pc = vcpu_pc;
ARM: KVM: extend WFI tracepoint to differentiate between wfi and wfe Currently the trace printk talks about "wfi" only, though the trace point triggers both on wfi and wfe traps. Add a parameter to differentiate between the two. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Wei Huang <wei@redhat.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-01-12 16:56:16 +00:00
__entry->is_wfe = is_wfe;
KVM: ARM: Emulation framework and CP15 emulation Adds a new important function in the main KVM/ARM code called handle_exit() which is called from kvm_arch_vcpu_ioctl_run() on returns from guest execution. This function examines the Hyp-Syndrome-Register (HSR), which contains information telling KVM what caused the exit from the guest. Some of the reasons for an exit are CP15 accesses, which are not allowed from the guest and this commit handles these exits by emulating the intended operation in software and skipping the guest instruction. Minor notes about the coproc register reset: 1) We reserve a value of 0 as an invalid cp15 offset, to catch bugs in our table, at cost of 4 bytes per vcpu. 2) Added comments on the table indicating how we handle each register, for simplicity of understanding. Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
2013-01-20 18:28:09 -05:00
),
ARM: KVM: extend WFI tracepoint to differentiate between wfi and wfe Currently the trace printk talks about "wfi" only, though the trace point triggers both on wfi and wfe traps. Add a parameter to differentiate between the two. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Wei Huang <wei@redhat.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-01-12 16:56:16 +00:00
TP_printk("guest executed wf%c at: 0x%08lx",
__entry->is_wfe ? 'e' : 'i', __entry->vcpu_pc)
KVM: ARM: Emulation framework and CP15 emulation Adds a new important function in the main KVM/ARM code called handle_exit() which is called from kvm_arch_vcpu_ioctl_run() on returns from guest execution. This function examines the Hyp-Syndrome-Register (HSR), which contains information telling KVM what caused the exit from the guest. Some of the reasons for an exit are CP15 accesses, which are not allowed from the guest and this commit handles these exits by emulating the intended operation in software and skipping the guest instruction. Minor notes about the coproc register reset: 1) We reserve a value of 0 as an invalid cp15 offset, to catch bugs in our table, at cost of 4 bytes per vcpu. 2) Added comments on the table indicating how we handle each register, for simplicity of understanding. Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
2013-01-20 18:28:09 -05:00
);
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)
);
KVM: ARM: Initial skeleton to compile KVM support Targets KVM support for Cortex A-15 processors. Contains all the framework components, make files, header files, some tracing functionality, and basic user space API. Only supported core is Cortex-A15 for now. Most functionality is in arch/arm/kvm/* or arch/arm/include/asm/kvm_*.h. Reviewed-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
2013-01-20 18:28:06 -05:00
#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>
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