accel/kvm: move KVM_HAVE_MCE_INJECTION define to kvm-all.c

This define is used only in accel/kvm/kvm-all.c, so we push directly the
definition there. Add more visibility to kvm_arch_on_sigbus_vcpu() to
allow removing this define from any header.

The architectures defining KVM_HAVE_MCE_INJECTION are i386, x86_64 and
aarch64.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250325045915.994760-18-pierrick.bouvier@linaro.org>

accel/kvm/kvm-all.c

@@ -57,6 +57,11 @@
 #include <sys/eventfd.h>
 #endif
 
+#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__)
+# define KVM_HAVE_MCE_INJECTION 1
+#endif
+
+
 /* KVM uses PAGE_SIZE in its definition of KVM_COALESCED_MMIO_MAX. We
  * need to use the real host PAGE_SIZE, as that's what KVM will use.
  */

include/system/kvm.h

@@ -390,9 +390,7 @@ bool kvm_vcpu_id_is_valid(int vcpu_id);
 /* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */
 unsigned long kvm_arch_vcpu_id(CPUState *cpu);
 
-#ifdef KVM_HAVE_MCE_INJECTION
 void kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr);
-#endif
 
 void kvm_arch_init_irq_routing(KVMState *s);
 

target/arm/cpu.h

@@ -33,10 +33,6 @@
 #include "target/arm/multiprocessing.h"
 #include "target/arm/gtimer.h"
 
-#ifdef TARGET_AARCH64
-#define KVM_HAVE_MCE_INJECTION 1
-#endif
-
 #define EXCP_UDEF            1   /* undefined instruction */
 #define EXCP_SWI             2   /* software interrupt */
 #define EXCP_PREFETCH_ABORT  3

target/i386/cpu.h

@@ -35,8 +35,6 @@
 
 #define XEN_NR_VIRQS 24
 
-#define KVM_HAVE_MCE_INJECTION 1
-
 /* support for self modifying code even if the modified instruction is
    close to the modifying instruction */
 #define TARGET_HAS_PRECISE_SMC