arch/tile: avoid a simulator warning during bootup

[pandora-kernel.git] / arch / tile / mm / init.c

diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c
index e34597e..9a62479 100644 (file)
--- a/arch/tile/mm/init.c
+++ b/arch/tile/mm/init.c
@@ -653,6 +653,17 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base)
        memcpy(pgd_base, pgtables, sizeof(pgtables));
        __install_page_table(pgd_base, __get_cpu_var(current_asid),
                             swapper_pgprot);
+
+       /*
+        * We just read swapper_pgprot and thus brought it into the cache,
+        * with its new home & caching mode.  When we start the other CPUs,
+        * they're going to reference swapper_pgprot via their initial fake
+        * VA-is-PA mappings, which cache everything locally.  At that
+        * time, if it's in our cache with a conflicting home, the
+        * simulator's coherence checker will complain.  So, flush it out
+        * of our cache; we're not going to ever use it again anyway.
+        */
+       __insn_finv(&swapper_pgprot);
 }
 
 /*