kvm: Provide sigbus services arch-independently

Provide arch-independent kvm_on_sigbus* stubs to remove the #ifdef'ery
from cpus.c. This patch also fixes --disable-kvm build by providing the
missing kvm_on_sigbus_vcpu kvm-stub.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --git a/cpus.c b/cpus.c
index 3a72d067911fb3c23c5aa9c9e1e3089b697dabb3..4975317df756f3a09252e95a984f8e978b39b159 100644 (file)
--- a/cpus.c
+++ b/cpus.c
@@ -539,10 +539,9 @@ static void sigbus_reraise(void)
 static void sigbus_handler(int n, struct qemu_signalfd_siginfo *siginfo,
                            void *ctx)
 {
-#if defined(TARGET_I386)
-    if (kvm_on_sigbus(siginfo->ssi_code, (void *)(intptr_t)siginfo->ssi_addr))
-#endif
+    if (kvm_on_sigbus(siginfo->ssi_code, (void *)(intptr_t)siginfo->ssi_addr)) {
         sigbus_reraise();
+    }
 }
 
 static void qemu_kvm_eat_signal(CPUState *env, int timeout)
@@ -575,10 +574,9 @@ static void qemu_kvm_eat_signal(CPUState *env, int timeout)
 
         switch (r) {
         case SIGBUS:
-#ifdef TARGET_I386
-            if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr))
-#endif
+            if (kvm_on_sigbus_vcpu(env, siginfo.si_code, siginfo.si_addr)) {
                 sigbus_reraise();
+            }
             break;
         default:
             break;

diff --git a/kvm-all.c b/kvm-all.c
index 55f6ac35edc14ad0c123353d09c82ba1c18474ba..a83aff2f66d97ece65d4227a52f1c547cecf0621 100644 (file)
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1366,3 +1366,13 @@ int kvm_set_ioeventfd_pio_word(int fd, uint16_t addr, uint16_t val, bool assign)
     return -ENOSYS;
 #endif
 }
+
+int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr)
+{
+    return kvm_arch_on_sigbus_vcpu(env, code, addr);
+}
+
+int kvm_on_sigbus(int code, void *addr)
+{
+    return kvm_arch_on_sigbus(code, addr);
+}

diff --git a/kvm-stub.c b/kvm-stub.c
index 88682f288bfe14003b62681c5c48bf2f704e5afe..d6b6c8e7944fdcdda72b3f5b9f367fe9e9df9eb1 100644 (file)
--- a/kvm-stub.c
+++ b/kvm-stub.c
@@ -147,6 +147,11 @@ int kvm_set_ioeventfd_mmio_long(int fd, uint32_t adr, uint32_t val, bool assign)
     return -ENOSYS;
 }
 
+int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr)
+{
+    return 1;
+}
+
 int kvm_on_sigbus(int code, void *addr)
 {
     return 1;

diff --git a/kvm.h b/kvm.h
index ca57517af2feae87ced55d59ace491fb166451d3..b2fb5c61e708981cc6579b98141adca979b00762 100644 (file)
--- a/kvm.h
+++ b/kvm.h
@@ -81,6 +81,9 @@ int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
 int kvm_pit_in_kernel(void);
 int kvm_irqchip_in_kernel(void);
 
+int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr);
+int kvm_on_sigbus(int code, void *addr);
+
 /* internal API */
 
 struct KVMState;
@@ -121,8 +124,8 @@ int kvm_arch_init_vcpu(CPUState *env);
 
 void kvm_arch_reset_vcpu(CPUState *env);
 
-int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr);
-int kvm_on_sigbus(int code, void *addr);
+int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr);
+int kvm_arch_on_sigbus(int code, void *addr);
 
 struct kvm_guest_debug;
 struct kvm_debug_exit_arch;

diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 05010bbc38dd790ec7719954eaecfeec7a6bf359..9df8ff85d2260b38a8cb989baf9e674e0fe10087 100644 (file)
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -1839,7 +1839,7 @@ static void kvm_mce_inj_srao_memscrub2(CPUState *env, target_phys_addr_t paddr)
 
 #endif
 
-int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr)
+int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr)
 {
 #if defined(KVM_CAP_MCE)
     void *vaddr;
@@ -1889,7 +1889,7 @@ int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr)
     return 0;
 }
 
-int kvm_on_sigbus(int code, void *addr)
+int kvm_arch_on_sigbus(int code, void *addr)
 {
 #if defined(KVM_CAP_MCE)
     if ((first_cpu->mcg_cap & MCG_SER_P) && addr && code == BUS_MCEERR_AO) {

diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index 710eca1dcaefffb9957a02ed21984d6c535f4ee1..93ecc5747087402e222cbfcc2d29f1da4194cb8e 100644 (file)
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -404,3 +404,13 @@ bool kvm_arch_stop_on_emulation_error(CPUState *env)
 {
     return true;
 }
+
+int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr)
+{
+    return 1;
+}
+
+int kvm_arch_on_sigbus(int code, void *addr)
+{
+    return 1;
+}

diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 38823f54f732fc7ae1ddc23a3797f8ec61c3b489..1702c4601de23d42b5b51d723ca91757a29e2206 100644 (file)
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -505,3 +505,13 @@ bool kvm_arch_stop_on_emulation_error(CPUState *env)
 {
     return true;
 }
+
+int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr)
+{
+    return 1;
+}
+
+int kvm_arch_on_sigbus(int code, void *addr)
+{
+    return 1;
+}