Enable compatibility mode operation for HYPERVISOR_sched_op and

HYPERVISOR_set_timer_op.

Signed-off-by: Jan Beulich <jbeulich@novell.com>

xen/arch/x86/x86_64/compat/entry.S

@@ -279,10 +279,8 @@ CFIX14:
 .section .rodata, "a", @progbits
 
 #define compat_platform_op domain_crash_synchronous
-#define compat_set_timer_op domain_crash_synchronous
 #define compat_grant_table_op domain_crash_synchronous
 #define compat_acm_op domain_crash_synchronous
-#define compat_arch_sched_op domain_crash_synchronous
 #define compat_xenoprof_op domain_crash_synchronous
 #define compat_sysctl domain_crash_synchronous
 #define compat_domctl domain_crash_synchronous
@@ -317,7 +315,7 @@ ENTRY(compat_hypercall_table)
         .quad compat_mmuext_op
         .quad compat_acm_op
         .quad compat_nmi_op
-        .quad compat_arch_sched_op
+        .quad compat_sched_op
         .quad compat_callback_op        /* 30 */
         .quad compat_xenoprof_op
         .quad do_event_channel_op
@@ -359,7 +357,7 @@ ENTRY(compat_hypercall_args_table)
         .byte 4 /* compat_mmuext_op         */
         .byte 1 /* compat_acm_op            */
         .byte 2 /* compat_nmi_op            */
-        .byte 2 /* compat_arch_sched_op     */
+        .byte 2 /* compat_sched_op          */
         .byte 2 /* compat_callback_op       */  /* 30 */
         .byte 2 /* compat_xenoprof_op       */
         .byte 2 /* compat_event_channel_op  */

xen/common/Makefile

@@ -39,3 +39,8 @@ subdir-$(CONFIG_COMPAT) += compat
 
 # Object file contains changeset and compiler information.
 version.o: $(BASEDIR)/include/xen/compile.h
+
+ifeq ($(CONFIG_COMPAT),y)
+# extra dependencies
+schedule.o: compat/schedule.c
+endif

xen/common/compat/schedule.c

@@ -0,0 +1,51 @@
+/****************************************************************************
+ * schedule.c
+ *
+ */
+
+#include <compat/sched.h>
+
+#define COMPAT
+#define ret_t int
+
+#define do_sched_op compat_sched_op
+
+#define xen_sched_shutdown sched_shutdown
+CHECK_sched_shutdown;
+#undef xen_sched_shutdown
+
+#define xen_sched_remote_shutdown sched_remote_shutdown
+CHECK_sched_remote_shutdown;
+#undef xen_sched_remote_shutdown
+
+static int compat_poll(struct compat_sched_poll *compat)
+{
+    struct sched_poll native;
+
+#define XLAT_sched_poll_HNDL_ports(_d_, _s_) \
+    guest_from_compat_handle((_d_)->ports, (_s_)->ports)
+    XLAT_sched_poll(&native, compat);
+#undef XLAT_sched_poll_HNDL_ports
+
+    return do_poll(&native);
+}
+
+#define do_poll compat_poll
+#define sched_poll compat_sched_poll
+
+#include "../schedule.c"
+
+int compat_set_timer_op(u32 lo, s32 hi)
+{
+    return do_set_timer_op(((s64)hi << 32) | lo);
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */

xen/common/schedule.c

@@ -13,6 +13,7 @@
  *
  */
 
+#ifndef COMPAT
 #include <xen/config.h>
 #include <xen/init.h>
 #include <xen/lib.h>
@@ -366,9 +367,13 @@ long do_sched_op_compat(int cmd, unsigned long arg)
     return ret;
 }
 
-long do_sched_op(int cmd, XEN_GUEST_HANDLE(void) arg)
+typedef long ret_t;
+
+#endif /* !COMPAT */
+
+ret_t do_sched_op(int cmd, XEN_GUEST_HANDLE(void) arg)
 {
-    long ret = 0;
+    ret_t ret = 0;
 
     switch ( cmd )
     {
@@ -445,6 +450,8 @@ long do_sched_op(int cmd, XEN_GUEST_HANDLE(void) arg)
     return ret;
 }
 
+#ifndef COMPAT
+
 /* Per-domain one-shot-timer hypercall. */
 long do_set_timer_op(s_time_t timeout)
 {
@@ -736,6 +743,12 @@ void dump_runq(unsigned char key)
     local_irq_restore(flags);
 }
 
+#ifdef CONFIG_COMPAT
+#include "compat/schedule.c"
+#endif
+
+#endif /* !COMPAT */
+
 /*
  * Local variables:
  * mode: C

xen/include/xlat.lst

@@ -26,4 +26,7 @@
 !	memory_map			memory.h
 !	memory_reservation		memory.h
 !	translate_gpfn_list		memory.h
+!	sched_poll			sched.h
+?	sched_remote_shutdown		sched.h
+?	sched_shutdown			sched.h
 !	vcpu_runstate_info		vcpu.h