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Commit 95c7c23b authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
Browse files

xen: report hypervisor version 



Various versions of the hypervisor have differences in what ABIs and
features they support.  Print some details into the boot log to help
with remote debugging.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 5b664cb2

arch/x86/xen/enlighten.c

+6 −2
Original line number Diff line number Diff line
@@ -167,10 +167,14 @@ void xen_vcpu_restore(void) 


static void __init xen_banner(void)

{

	unsigned version = HYPERVISOR_xen_version(XENVER_version, NULL);

	struct xen_extraversion extra;

	HYPERVISOR_xen_version(XENVER_extraversion, &extra);



	printk(KERN_INFO "Booting paravirtualized kernel on %s\n",

	       pv_info.name);

	printk(KERN_INFO "Hypervisor signature: %s%s\n",

	       xen_start_info->magic,

	printk(KERN_INFO "Xen version: %d.%d%s%s\n",

	       version >> 16, version & 0xffff, extra.extraversion,

	       xen_feature(XENFEAT_mmu_pt_update_preserve_ad) ? " (preserve-AD)" : "");

}