KVM: remove kvm_arch_on_sigbus
Build it on kvm_arch_on_sigbus_vcpu instead. They do the same
for "action optional" SIGBUSes, and the main thread should never get
"action required" SIGBUSes because it blocks the signal.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 3045ee7..6ecb61c 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -358,7 +358,6 @@
unsigned long kvm_arch_vcpu_id(CPUState *cpu);
int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr);
-int kvm_arch_on_sigbus(int code, void *addr);
void kvm_arch_init_irq_routing(KVMState *s);
diff --git a/kvm-all.c b/kvm-all.c
index 0c94637..a433ad3 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -2391,6 +2391,7 @@
return r;
}
+
int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
{
return kvm_arch_on_sigbus_vcpu(cpu, code, addr);
@@ -2398,7 +2399,13 @@
int kvm_on_sigbus(int code, void *addr)
{
- return kvm_arch_on_sigbus(code, addr);
+ /* Action required MCE kills the process if SIGBUS is blocked. Because
+ * that's what happens in the I/O thread, where we handle MCE via signalfd,
+ * we can only get action optional here.
+ */
+ assert(code != BUS_MCEERR_AR);
+ kvm_arch_on_sigbus_vcpu(first_cpu, code, addr);
+ return 0;
}
int kvm_create_device(KVMState *s, uint64_t type, bool test)
diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 395e986..e5218f6 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -565,11 +565,6 @@
return 1;
}
-int kvm_arch_on_sigbus(int code, void *addr)
-{
- return 1;
-}
-
/* The #ifdef protections are until 32bit headers are imported and can
* be removed once both 32 and 64 bit reach feature parity.
*/
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index f49a786..2adf992 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -462,14 +462,13 @@
ram_addr_t ram_addr;
hwaddr paddr;
+ /* If we get an action required MCE, it has been injected by KVM
+ * while the VM was running. An action optional MCE instead should
+ * be coming from the main thread, which qemu_init_sigbus identifies
+ * as the "early kill" thread.
+ */
assert(code == BUS_MCEERR_AR || code == BUS_MCEERR_AO);
- /* Because the MCE happened while running the VCPU, KVM could have
- * injected action required MCEs too. Action optional MCEs should
- * be delivered to the main thread, which qemu_init_sigbus identifies
- * as the "early kill" thread, but if we get one for whatever reason
- * we just handle it just like the main thread would.
- */
if ((env->mcg_cap & MCG_SER_P) && addr) {
ram_addr = qemu_ram_addr_from_host(addr);
if (ram_addr != RAM_ADDR_INVALID &&
@@ -491,35 +490,6 @@
return 0;
}
-int kvm_arch_on_sigbus(int code, void *addr)
-{
- X86CPU *cpu = X86_CPU(first_cpu);
-
- assert(code == BUS_MCEERR_AR || code == BUS_MCEERR_AO);
-
- if (code == BUS_MCEERR_AR) {
- hardware_memory_error();
- }
-
- /* Hope we are lucky for AO MCE */
- if ((cpu->env.mcg_cap & MCG_SER_P) && addr) {
- ram_addr_t ram_addr;
- hwaddr paddr;
-
- ram_addr = qemu_ram_addr_from_host(addr);
- if (ram_addr != RAM_ADDR_INVALID &&
- kvm_physical_memory_addr_from_host(first_cpu->kvm_state,
- addr, &paddr)) {
- kvm_hwpoison_page_add(ram_addr);
- kvm_mce_inject(X86_CPU(first_cpu), paddr, code);
- }
-
- fprintf(stderr, "Hardware memory error for memory used by "
- "QEMU itself instead of guest system!: %p\n", addr);
- }
- return 0;
-}
-
static int kvm_inject_mce_oldstyle(X86CPU *cpu)
{
CPUX86State *env = &cpu->env;
diff --git a/target/mips/kvm.c b/target/mips/kvm.c
index 998c341..3e686e7 100644
--- a/target/mips/kvm.c
+++ b/target/mips/kvm.c
@@ -186,12 +186,6 @@
return 1;
}
-int kvm_arch_on_sigbus(int code, void *addr)
-{
- DPRINTF("%s\n", __func__);
- return 1;
-}
-
void kvm_arch_init_irq_routing(KVMState *s)
{
}
diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
index acc40ec..75598cd 100644
--- a/target/ppc/kvm.c
+++ b/target/ppc/kvm.c
@@ -2587,11 +2587,6 @@
return 1;
}
-int kvm_arch_on_sigbus(int code, void *addr)
-{
- return 1;
-}
-
void kvm_arch_init_irq_routing(KVMState *s)
{
}
diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c
index 5ec050c..e7eea6d 100644
--- a/target/s390x/kvm.c
+++ b/target/s390x/kvm.c
@@ -2145,11 +2145,6 @@
return 1;
}
-int kvm_arch_on_sigbus(int code, void *addr)
-{
- return 1;
-}
-
void kvm_s390_io_interrupt(uint16_t subchannel_id,
uint16_t subchannel_nr, uint32_t io_int_parm,
uint32_t io_int_word)
