target/arm: Use acpi_ghes_present() to see if we report ACPI memory e…

…rrors

The virt_is_acpi_enabled() function is specific to the virt board, as
is the check for its 'ras' property.  Use the new acpi_ghes_present()
function to check whether we should report memory errors via
acpi_ghes_record_errors().

This avoids a link error if QEMU was built without support for the
virt board, and provides a mechanism that can be used by any future
board models that want to add ACPI memory error reporting support
(they only need to call acpi_ghes_add_fw_cfg()).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Dongjiu Geng <gengdongjiu1@gmail.com>
Message-id: 20210603171259.27962-4-peter.maydell@linaro.org

target/arm/kvm64.c

@@ -1410,14 +1410,10 @@ void kvm_arch_on_sigbus_vcpu(CPUState *c, int code, void *addr)
 {
     ram_addr_t ram_addr;
     hwaddr paddr;
-    Object *obj = qdev_get_machine();
-    VirtMachineState *vms = VIRT_MACHINE(obj);
-    bool acpi_enabled = virt_is_acpi_enabled(vms);
 
     assert(code == BUS_MCEERR_AR || code == BUS_MCEERR_AO);
 
-    if (acpi_enabled && addr &&
-            object_property_get_bool(obj, "ras", NULL)) {
+    if (acpi_ghes_present() && addr) {
         ram_addr = qemu_ram_addr_from_host(addr);
         if (ram_addr != RAM_ADDR_INVALID &&
             kvm_physical_memory_addr_from_host(c->kvm_state, addr, &paddr)) {