This is just to test that the constant is wired through correctly.
lguest has no ABI so I could apply this patch, but it breaks the
"don't be an asshole" rule.
diff -r 19e5f3f3a4be Documentation/lguest/Makefile
--- a/Documentation/lguest/Makefile Wed Nov 12 22:27:50 2008 +1030
+++ b/Documentation/lguest/Makefile Wed Nov 12 22:38:52 2008 +1030
@@ -4,5 +4,7 @@
all: lguest
+lguest: ../../include/linux/lguest_launcher.h
+
clean:
rm -f lguest
diff -r 19e5f3f3a4be include/linux/lguest_launcher.h
--- a/include/linux/lguest_launcher.h Wed Nov 12 22:27:50 2008 +1030
+++ b/include/linux/lguest_launcher.h Wed Nov 12 22:38:52 2008 +1030
@@ -60,5 +60,6 @@
LHREQ_BREAK, /* + on/off flag (on blocks until someone does off) */
};
-#define LGUEST_VRING_ALIGN 4096
+/* A cacheline is enough separation between producer and consumer. */
+#define LGUEST_VRING_ALIGN 128
#endif /* _LINUX_LGUEST_LAUNCHER */
--
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