1 files changed, 84 insertions, 0 deletions
diff --git a/x86-cpufreq-report.patch b/x86-cpufreq-report.patch
new file mode 100644
index 0000000..018e8a0
--- /dev/null
+++ b/x86-cpufreq-report.patch
@@ -0,0 +1,84 @@
+Index: xen-4.12.0-testing/xen/arch/x86/platform_hypercall.c
+===================================================================
+--- xen-4.12.0-testing.orig/xen/arch/x86/platform_hypercall.c
++++ xen-4.12.0-testing/xen/arch/x86/platform_hypercall.c
+@@ -25,7 +25,7 @@
+ #include <xen/symbols.h>
+ #include <asm/current.h>
+ #include <public/platform.h>
+-#include <acpi/cpufreq/processor_perf.h>
++#include <acpi/cpufreq/cpufreq.h>
+ #include <asm/edd.h>
+ #include <asm/mtrr.h>
+ #include <asm/io_apic.h>
+@@ -807,6 +807,41 @@ ret_t do_platform_op(XEN_GUEST_HANDLE_PA
+             ret = -EFAULT;
+     }
+     break;
++
++    case XENPF_get_cpu_freq:
++    case XENPF_get_cpu_freq_min:
++    case XENPF_get_cpu_freq_max:
++    {
++        struct vcpu *v;
++        const struct cpufreq_policy *policy;
++
++        if ( op->u.get_cpu_freq.vcpu >= current->domain->max_vcpus ||
++             !(v = current->domain->vcpu[op->u.get_cpu_freq.vcpu]) )
++        {
++            ret = -EINVAL;
++            break;
++        }
++
++        policy = per_cpu(cpufreq_cpu_policy, v->processor);
++        switch ( op->cmd & -!!policy )
++        {
++        case XENPF_get_cpu_freq:
++            op->u.get_cpu_freq.freq = policy->cur;
++            break;
++        case XENPF_get_cpu_freq_min:
++            op->u.get_cpu_freq.freq = policy->min;
++            break;
++        case XENPF_get_cpu_freq_max:
++            op->u.get_cpu_freq.freq = policy->max;
++            break;
++        default:
++            op->u.get_cpu_freq.freq = 0;
++            break;
++        }
++        if ( __copy_field_to_guest(u_xenpf_op, op, u.get_cpu_freq.freq) )
++            ret = -EFAULT;
++    }
++    break;
+ 
+     default:
+         ret = -ENOSYS;
+Index: xen-4.12.0-testing/xen/include/public/platform.h
+===================================================================
+--- xen-4.12.0-testing.orig/xen/include/public/platform.h
++++ xen-4.12.0-testing/xen/include/public/platform.h
+@@ -553,6 +553,16 @@ struct xenpf_core_parking {
+ typedef struct xenpf_core_parking xenpf_core_parking_t;
+ DEFINE_XEN_GUEST_HANDLE(xenpf_core_parking_t);
+ 
++#define XENPF_get_cpu_freq        ('N' << 24)
++#define XENPF_get_cpu_freq_min    (XENPF_get_cpu_freq + 1)
++#define XENPF_get_cpu_freq_max    (XENPF_get_cpu_freq_min + 1)
++struct xenpf_get_cpu_freq {
++    /* IN variables */
++    uint32_t vcpu;
++    /* OUT variables */
++    uint32_t freq; /* in kHz */
++};
++
+ /*
+  * Access generic platform resources(e.g., accessing MSR, port I/O, etc)
+  * in unified way. Batch resource operations in one call are supported and
+@@ -644,6 +654,7 @@ struct xen_platform_op {
+         struct xenpf_core_parking      core_parking;
+         struct xenpf_resource_op       resource_op;
+         struct xenpf_symdata           symdata;
++        struct xenpf_get_cpu_freq      get_cpu_freq;
+         uint8_t                        pad[128];
+     } u;
+ };