From: Like Xu <likexu@tencent.com>

Fix compiler warnings when compiling KVM with [-Wunreachable-code-break].
No functional change intended.

Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Like Xu <likexu@tencent.com>
---
 arch/x86/kvm/emulate.c | 2 --
 arch/x86/kvm/hyperv.c  | 1 -
 arch/x86/kvm/x86.c     | 1 -
 3 files changed, 4 deletions(-)

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 936a397a08cd..2673cd5c46cb 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -1799,13 +1799,11 @@ static int writeback(struct x86_emulate_ctxt *ctxt, struct operand *op)
 					       op->addr.mem,
 					       &op->val,
 					       op->bytes);
-		break;
 	case OP_MEM_STR:
 		return segmented_write(ctxt,
 				       op->addr.mem,
 				       op->data,
 				       op->bytes * op->count);
-		break;
 	case OP_XMM:
 		kvm_write_sse_reg(op->addr.xmm, &op->vec_val);
 		break;
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index b28fd020066f..7c2dac6824e2 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -1293,7 +1293,6 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr)
 	case HV_X64_MSR_VP_ASSIST_PAGE:
 		return hv_vcpu->cpuid_cache.features_eax &
 			HV_MSR_APIC_ACCESS_AVAILABLE;
-		break;
 	case HV_X64_MSR_TSC_FREQUENCY:
 	case HV_X64_MSR_APIC_FREQUENCY:
 		return hv_vcpu->cpuid_cache.features_eax &
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 34945c7dba38..f3f8d27acc96 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4647,7 +4647,6 @@ static int kvm_x86_dev_get_attr(struct kvm_device_attr *attr)
 		return 0;
 	default:
 		return -ENXIO;
-		break;
 	}
 }
 

base-commit: 240f736891887939571854bd6d734b6c9291f22e
-- 
2.41.0

On Mon, 07 Aug 2023 17:42:43 +0800, Like Xu wrote:
> Fix compiler warnings when compiling KVM with [-Wunreachable-code-break].
> No functional change intended.
> 
> 

Applied to kvm-x86 misc, thanks!

[1/1] KVM: x86: Remove break statements that will never be executed
      https://github.com/kvm-x86/linux/commit/765da7fe0e76

--
https://github.com/kvm-x86/linux/tree/next
https://github.com/kvm-x86/linux/tree/fixes