.dump = hv_kmsg_dump,
};
+static void hv_kmsg_dump_register(void)
+{
+ int ret;
+
+ hv_panic_page = hv_alloc_hyperv_zeroed_page();
+ if (!hv_panic_page) {
+ pr_err("Hyper-V: panic message page memory allocation failed\n");
+ return;
+ }
+
+ ret = kmsg_dump_register(&hv_kmsg_dumper);
+ if (ret) {
+ pr_err("Hyper-V: kmsg dump register error 0x%x\n", ret);
+ hv_free_hyperv_page((unsigned long)hv_panic_page);
+ hv_panic_page = NULL;
+ }
+}
+
static struct ctl_table_header *hv_ctl_table_hdr;
/*
* capability is supported by the hypervisor.
*/
hv_get_crash_ctl(hyperv_crash_ctl);
- if (hyperv_crash_ctl & HV_CRASH_CTL_CRASH_NOTIFY_MSG) {
- hv_panic_page = (void *)hv_alloc_hyperv_zeroed_page();
- if (hv_panic_page) {
- ret = kmsg_dump_register(&hv_kmsg_dumper);
- if (ret) {
- pr_err("Hyper-V: kmsg dump register "
- "error 0x%x\n", ret);
- hv_free_hyperv_page(
- (unsigned long)hv_panic_page);
- hv_panic_page = NULL;
- }
- } else
- pr_err("Hyper-V: panic message page memory "
- "allocation failed");
- }
+ if (hyperv_crash_ctl & HV_CRASH_CTL_CRASH_NOTIFY_MSG)
+ hv_kmsg_dump_register();
register_die_notifier(&hyperv_die_block);
}