X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=drivers%2Flguest%2Fcore.c;h=312ffd3d00177ca5a5e21393377c760e9bdec91e;hb=66782cec7ad8f48c09d96ee59b713f694265cfa1;hp=7dc93aa004c86cfa988993d53164ea1d665aff97;hpb=27cf3a16b2535a490f8cf1d29a6634f1c70f7831;p=deliverable%2Flinux.git

diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c
index 7dc93aa004c8..312ffd3d0017 100644
--- a/drivers/lguest/core.c
+++ b/drivers/lguest/core.c
@@ -173,7 +173,7 @@ static void unmap_switcher(void)
 bool lguest_address_ok(const struct lguest *lg,
 		       unsigned long addr, unsigned long len)
 {
-	return (addr+len) / PAGE_SIZE < lg->pfn_limit && (addr+len >= addr);
+	return addr+len <= lg->pfn_limit * PAGE_SIZE && (addr+len >= addr);
 }
 
 /*