From: Wei Yang <richardw.yang@linux.intel.com>
Date: Thu, 21 Mar 2019 08:25:54 +0000 (+0800)
Subject: exec.c: correct the maximum skip value during compact
X-Git-Tag: qemu-xen-4.14.0~395^2~24
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=26ca2075babd7775e246b9eb7da75d6de77eb658;p=qemu-xen.git

exec.c: correct the maximum skip value during compact

skip is defined with 6 bits. So the maximum value should be (1 << 6).

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Message-Id: <20190321082555.21118-6-richardw.yang@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

diff --git a/exec.c b/exec.c
index d9827ef840..d1969bb894 100644
--- a/exec.c
+++ b/exec.c
@@ -324,7 +324,7 @@ static void phys_page_compact(PhysPageEntry *lp, Node *nodes)
     assert(valid_ptr < P_L2_SIZE);
 
     /* Don't compress if it won't fit in the # of bits we have. */
-    if (lp->skip + p[valid_ptr].skip >= (1 << 3)) {
+    if (lp->skip + p[valid_ptr].skip >= (1 << 6)) {
         return;
     }