From c45eb53aabaa620c71ac567ddf4ee89802a97a70 Mon Sep 17 00:00:00 2001
From: Li Qiang <liq3ea@163.com>
Date: Fri, 10 May 2019 09:43:48 -0700
Subject: edu: mmio: allow 64-bit access in read dispatch

The edu spec says when address >= 0x80, the MMIO area can
be accessed by 64-bit.

Signed-off-by: Li Qiang <liq3ea@163.com>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
Message-Id: <20190510164349.81507-3-liq3ea@163.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/misc/edu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'hw')

diff --git a/hw/misc/edu.c b/hw/misc/edu.c
index 65fc32b..33de051 100644
--- a/hw/misc/edu.c
+++ b/hw/misc/edu.c
@@ -185,7 +185,11 @@ static uint64_t edu_mmio_read(void *opaque, hwaddr addr, unsigned size)
     EduState *edu = opaque;
     uint64_t val = ~0ULL;
 
-    if (size != 4) {
+    if (addr < 0x80 && size != 4) {
+        return val;
+    }
+
+    if (addr >= 0x80 && size != 4 && size != 8) {
         return val;
     }
 
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