xen/bootup: allow read_tscp call for Xen PV guests.

The hypervisor will trap it. However without this patch, we would crash as the .read_tscp is set to NULL. This patch fixes it and sets it to the native_read_tscp call. CC: stable@vger.kernel.org Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
mariux64 · Oct 12, 2012 · cd0608e · cd0608e
1 parent 34b6f01
commit cd0608e
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
@@ -1164,6 +1164,8 @@ static const struct pv_cpu_ops xen_cpu_ops __initconst = {
 	.read_tsc = native_read_tsc,
 	.read_pmc = native_read_pmc,
 
+	.read_tscp = native_read_tscp,
+
 	.iret = xen_iret,
 	.irq_enable_sysexit = xen_sysexit,
 #ifdef CONFIG_X86_64