xen/acpi: Move the xen_running_on_version_or_later function.

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / x86 / xen / enlighten.c

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index eb0edff..3325cd9 100644 (file)
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -223,6 +223,21 @@ static void __init xen_banner(void)
               version >> 16, version & 0xffff, extra.extraversion,
               xen_feature(XENFEAT_mmu_pt_update_preserve_ad) ? " (preserve-AD)" : "");
 }
+/* Check if running on Xen version (major, minor) or later */
+bool
+xen_running_on_version_or_later(unsigned int major, unsigned int minor)
+{
+       unsigned int version;
+
+       if (!xen_domain())
+               return false;
+
+       version = HYPERVISOR_xen_version(XENVER_version, NULL);
+       if ((((version >> 16) == major) && ((version & 0xffff) >= minor)) ||
+               ((version >> 16) > major))
+               return true;
+       return false;
+}
 
 #define CPUID_THERM_POWER_LEAF 6
 #define APERFMPERF_PRESENT 0