xen: more XEN_GUEST_HANDLE_PARAM substitutions

More substitutions in this patch, not as obvious as the ones in the
previous patch.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Keir Fraser <keir@xen.org>
Committed-by: Ian Campbell <ian.campbell@citrix.com>

xen/arch/x86/mm.c

@@ -2913,7 +2913,9 @@ long do_mmuext_op(
         {
             cpumask_t pmask;
 
-            if ( unlikely(vcpumask_to_pcpumask(d, op.arg2.vcpumask, &pmask)) )
+            if ( unlikely(vcpumask_to_pcpumask(d,
+                            guest_handle_to_param(op.arg2.vcpumask, const_void),
+                            &pmask)) )
             {
                 okay = 0;
                 break;
@@ -4195,6 +4197,7 @@ static int handle_iomem_range(unsigned long s, unsigned long e, void *p)
     if ( s > ctxt->s )
     {
         e820entry_t ent;
+        XEN_GUEST_HANDLE_PARAM(e820entry_t) buffer_param;
         XEN_GUEST_HANDLE(e820entry_t) buffer;
 
         if ( ctxt->n + 1 >= ctxt->map.nr_entries )
@@ -4202,7 +4205,8 @@ static int handle_iomem_range(unsigned long s, unsigned long e, void *p)
         ent.addr = (uint64_t)ctxt->s << PAGE_SHIFT;
         ent.size = (uint64_t)(s - ctxt->s) << PAGE_SHIFT;
         ent.type = E820_RESERVED;
-        buffer = guest_handle_cast(ctxt->map.buffer, e820entry_t);
+        buffer_param = guest_handle_cast(ctxt->map.buffer, e820entry_t);
+        buffer = guest_handle_from_param(buffer_param, e820entry_t);
         if ( __copy_to_guest_offset(buffer, ctxt->n, &ent, 1) )
             return -EFAULT;
         ctxt->n++;
@@ -4499,6 +4503,7 @@ long arch_memory_op(int op, XEN_GUEST_HANDLE_PARAM(void) arg)
     {
         struct memory_map_context ctxt;
         XEN_GUEST_HANDLE(e820entry_t) buffer;
+        XEN_GUEST_HANDLE_PARAM(e820entry_t) buffer_param;
         unsigned int i;
 
         if ( !IS_PRIV(current->domain) )
@@ -4513,7 +4518,8 @@ long arch_memory_op(int op, XEN_GUEST_HANDLE_PARAM(void) arg)
         if ( ctxt.map.nr_entries < e820.nr_map + 1 )
             return -EINVAL;
 
-        buffer = guest_handle_cast(ctxt.map.buffer, e820entry_t);
+        buffer_param = guest_handle_cast(ctxt.map.buffer, e820entry_t);
+        buffer = guest_handle_from_param(buffer_param, e820entry_t);
         if ( !guest_handle_okay(buffer, ctxt.map.nr_entries) )
             return -EFAULT;
 

xen/arch/x86/oprofile/backtrace.c

@@ -74,8 +74,11 @@ dump_guest_backtrace(struct vcpu *vcpu, const struct frame_head *head,
     }
     else
     {
-        XEN_GUEST_HANDLE(const_frame_head_t) guest_head =
+        XEN_GUEST_HANDLE(const_frame_head_t) guest_head;
+        XEN_GUEST_HANDLE_PARAM(const_frame_head_t) guest_head_param =
             const_guest_handle_from_ptr(head, frame_head_t);
+        guest_head = guest_handle_from_param(guest_head_param,
+					     const_frame_head_t);
 
         /* Also check accessibility of one struct frame_head beyond */
         if (!guest_handle_okay(guest_head, 2))

xen/arch/x86/platform_hypercall.c

@@ -61,7 +61,7 @@ long cpu_down_helper(void *data);
 long core_parking_helper(void *data);
 uint32_t get_cur_idle_nums(void);
 
-ret_t do_platform_op(XEN_GUEST_HANDLE(xen_platform_op_t) u_xenpf_op)
+ret_t do_platform_op(XEN_GUEST_HANDLE_PARAM(xen_platform_op_t) u_xenpf_op)
 {
     ret_t ret = 0;
     struct xen_platform_op curop, *op = &curop;
@@ -186,7 +186,9 @@ ret_t do_platform_op(XEN_GUEST_HANDLE(xen_platform_op_t) u_xenpf_op)
             }
         }
 
-        ret = microcode_update(data, op->u.microcode.length);
+        ret = microcode_update(
+                guest_handle_to_param(data, const_void),
+                op->u.microcode.length);
         spin_unlock(&vcpu_alloc_lock);
     }
     break;
@@ -454,7 +456,9 @@ ret_t do_platform_op(XEN_GUEST_HANDLE(xen_platform_op_t) u_xenpf_op)
             XEN_GUEST_HANDLE(uint32) pdc;
 
             guest_from_compat_handle(pdc, op->u.set_pminfo.u.pdc);
-            ret = acpi_set_pdc_bits(op->u.set_pminfo.id, pdc);
+            ret = acpi_set_pdc_bits(
+                    op->u.set_pminfo.id,
+                    guest_handle_to_param(pdc, uint32));
         }
         break;
 

xen/arch/x86/x86_64/cpu_idle.c

@@ -57,10 +57,12 @@ static int copy_from_compat_state(xen_processor_cx_t *xen_state,
 {
 #define XLAT_processor_cx_HNDL_dp(_d_, _s_) do { \
     XEN_GUEST_HANDLE(compat_processor_csd_t) dps; \
+    XEN_GUEST_HANDLE_PARAM(xen_processor_csd_t) dps_param; \
     if ( unlikely(!compat_handle_okay((_s_)->dp, (_s_)->dpcnt)) ) \
             return -EFAULT; \
     guest_from_compat_handle(dps, (_s_)->dp); \
-    (_d_)->dp = guest_handle_cast(dps, xen_processor_csd_t); \
+    dps_param = guest_handle_cast(dps, xen_processor_csd_t); \
+    (_d_)->dp = guest_handle_from_param(dps_param, xen_processor_csd_t); \
 } while (0)
     XLAT_processor_cx(xen_state, state);
 #undef XLAT_processor_cx_HNDL_dp

xen/arch/x86/x86_64/cpufreq.c

@@ -45,10 +45,12 @@ compat_set_px_pminfo(uint32_t cpu, struct compat_processor_performance *perf)
 
 #define XLAT_processor_performance_HNDL_states(_d_, _s_) do { \
     XEN_GUEST_HANDLE(compat_processor_px_t) states; \
+    XEN_GUEST_HANDLE_PARAM(xen_processor_px_t) states_t; \
     if ( unlikely(!compat_handle_okay((_s_)->states, (_s_)->state_count)) ) \
         return -EFAULT; \
     guest_from_compat_handle(states, (_s_)->states); \
-    (_d_)->states = guest_handle_cast(states, xen_processor_px_t); \
+    states_t = guest_handle_cast(states, xen_processor_px_t); \
+    (_d_)->states = guest_handle_from_param(states_t, xen_processor_px_t); \
 } while (0)
 
     XLAT_processor_performance(xen_perf, perf);

xen/arch/x86/x86_64/platform_hypercall.c

@@ -38,6 +38,7 @@ CHECK_pf_pcpu_version;
 
 #define COMPAT
 #define _XEN_GUEST_HANDLE(t) XEN_GUEST_HANDLE(t)
+#define _XEN_GUEST_HANDLE_PARAM(t) XEN_GUEST_HANDLE_PARAM(t)
 typedef int ret_t;
 
 #include "../platform_hypercall.c"

xen/common/compat/multicall.c

@@ -25,6 +25,7 @@ DEFINE_XEN_GUEST_HANDLE(multicall_entry_compat_t);
 #define call                 compat_call
 #define do_multicall(l, n)   compat_multicall(_##l, n)
 #define _XEN_GUEST_HANDLE(t) XEN_GUEST_HANDLE(t)
+#define _XEN_GUEST_HANDLE_PARAM(t) XEN_GUEST_HANDLE(t)
 
 static void __trace_multicall_call(multicall_entry_t *call)
 {

xen/common/multicall.c

@@ -35,7 +35,7 @@ static void trace_multicall_call(multicall_entry_t *call)
 
 ret_t
 do_multicall(
-    XEN_GUEST_HANDLE(multicall_entry_t) call_list, unsigned int nr_calls)
+    XEN_GUEST_HANDLE_PARAM(multicall_entry_t) call_list, unsigned int nr_calls)
 {
     struct mc_state *mcs = &current->mc_state;
     unsigned int     i;