scripts/runqemu-internal: Work around qemux86 PAT bugs in linux 4.4.1

Since the upgrade of qemux86 to 4.4.1 we're seeing PAT issues when starting the X server. We need to fix the problem but the failing sanity tests mask out other issues and we need a workaround.

Merge this for now until we can figure out the full issue. This is better than changing the kernel defconfig or reverting to old kernel versions.

Signed-off-by Richard Purdie <[email protected]>

scripts/runqemu-internal +1 -1

index ebed2bd..ad854d1 100755
@@ -434,7 +434,7 @@ if [ "$MACHINE" = "qemux86" ]; then
      fi
      # Currently oprofile's event based interrupt mode doesn't work(Bug #828) in
      # qemux86 and qemux86-64. We can use timer interrupt mode for now.
-    KERNCMDLINE="$KERNCMDLINE oprofile.timer=1"
+    KERNCMDLINE="$KERNCMDLINE oprofile.timer=1 nopat"
  fi
 
  if [ "$MACHINE" = "qemux86-64" ]; then

Quoted 4 lines · Richard Purdie

Since the upgrade of qemux86 to 4.4.1 we're seeing PAT issues when starting the X server. We need to fix the problem but the failing sanity tests mask out other issues and we need a workaround.

I was out of the day and didn't notice if any logs were available for the issue ? Is there a pointer to the failing logs ?

Obviously I didn't notice this in any of my runs. I'll check 4.4.x for anything that looks suspicious, and can bisect if needed.