svn commit: r310133 - in stable: 10/sys/mips/mips 11/sys/mips/mips

[John Baldwin]

Author: jhb
Date: Fri Dec 16 01:06:35 2016
New Revision: 310133
URL: https://svnweb.freebsd.org/changeset/base/310133

Log:
  MFC 308690: Sync instruction cache's after writing user breakpoints on MIPS.
  
  Add an implementation for pmaps_sync_icache() on MIPS that sync's the
  instruction cache on all CPUs via smp_rendezvous() after a debugger
  inserts a breakpoint via ptrace(PT_IO).

Modified:
  stable/11/sys/mips/mips/pmap.c
Directory Properties:
  stable/11/   (props changed)

Changes in other areas also in this revision:
Modified:
  stable/10/sys/mips/mips/pmap.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/11/sys/mips/mips/pmap.c
==============================================================================
--- stable/11/sys/mips/mips/pmap.c	Fri Dec 16 00:35:59 2016	(r310132)
+++ stable/11/sys/mips/mips/pmap.c	Fri Dec 16 01:06:35 2016	(r310133)
@@ -74,11 +74,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/proc.h>
 #include <sys/rwlock.h>
 #include <sys/sched.h>
-#ifdef SMP
 #include <sys/smp.h>
-#else
-#include <sys/cpuset.h>
-#endif
 #include <sys/sysctl.h>
 #include <sys/vmmeter.h>
 
@@ -3284,9 +3280,19 @@ pmap_activate(struct thread *td)
 	critical_exit();
 }
 
+static void
+pmap_sync_icache_one(void *arg __unused)
+{
+
+	mips_icache_sync_all();
+	mips_dcache_wbinv_all();
+}
+
 void
 pmap_sync_icache(pmap_t pm, vm_offset_t va, vm_size_t sz)
 {
+
+	smp_rendezvous(NULL, pmap_sync_icache_one, NULL, NULL);
 }
 
 /*