From 58466766cd35754a061414c0c93225db2962948e Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Wed, 19 Dec 2018 08:28:38 +0000 Subject: [PATCH] arm/arm64: KVM: Add ARM_EXCEPTION_IS_TRAP macro 32 and 64bit use different symbols to identify the traps. 32bit has a fine grained approach (prefetch abort, data abort and HVC), while 64bit is pretty happy with just "trap". This has been fine so far, except that we now need to decode some of that in tracepoints that are common to both architectures. Introduce ARM_EXCEPTION_IS_TRAP which abstracts the trap symbols and make the tracepoint use it. Acked-by: Christoffer Dall Signed-off-by: Marc Zyngier --- arch/arm/include/asm/kvm_asm.h | 4 ++++ arch/arm64/include/asm/kvm_asm.h | 1 + virt/kvm/arm/trace.h | 2 +- 3 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/arm/include/asm/kvm_asm.h b/arch/arm/include/asm/kvm_asm.h index 231e87ad45d5..35491af87985 100644 --- a/arch/arm/include/asm/kvm_asm.h +++ b/arch/arm/include/asm/kvm_asm.h @@ -23,6 +23,10 @@ #define ARM_EXIT_WITH_ABORT_BIT 31 #define ARM_EXCEPTION_CODE(x) ((x) & ~(1U << ARM_EXIT_WITH_ABORT_BIT)) +#define ARM_EXCEPTION_IS_TRAP(x) \ + (ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_PREF_ABORT || \ + ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_DATA_ABORT || \ + ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_HVC) #define ARM_ABORT_PENDING(x) !!((x) & (1U << ARM_EXIT_WITH_ABORT_BIT)) #define ARM_EXCEPTION_RESET 0 diff --git a/arch/arm64/include/asm/kvm_asm.h b/arch/arm64/include/asm/kvm_asm.h index b2e12c99db7d..f5b79e995f40 100644 --- a/arch/arm64/include/asm/kvm_asm.h +++ b/arch/arm64/include/asm/kvm_asm.h @@ -25,6 +25,7 @@ #define ARM_EXIT_WITH_SERROR_BIT 31 #define ARM_EXCEPTION_CODE(x) ((x) & ~(1U << ARM_EXIT_WITH_SERROR_BIT)) +#define ARM_EXCEPTION_IS_TRAP(x) (ARM_EXCEPTION_CODE((x)) == ARM_EXCEPTION_TRAP) #define ARM_SERROR_PENDING(x) !!((x) & (1U << ARM_EXIT_WITH_SERROR_BIT)) #define ARM_EXCEPTION_IRQ 0 diff --git a/virt/kvm/arm/trace.h b/virt/kvm/arm/trace.h index f21f04f8036d..3828beab93f2 100644 --- a/virt/kvm/arm/trace.h +++ b/virt/kvm/arm/trace.h @@ -37,7 +37,7 @@ TRACE_EVENT(kvm_exit, TP_fast_assign( __entry->ret = ARM_EXCEPTION_CODE(ret); - __entry->esr_ec = (ARM_EXCEPTION_CODE(ret) == ARM_EXCEPTION_TRAP) ? esr_ec : 0; + __entry->esr_ec = ARM_EXCEPTION_IS_TRAP(ret) ? esr_ec : 0; __entry->vcpu_pc = vcpu_pc; ),