File 0191-tz-ppc-add-dummy-read-write-methods.patch of Package qemu.26284

From: Prasad J Pandit <pjp@fedoraproject.org>
Date: Tue, 11 Aug 2020 17:11:31 +0530
Subject: tz-ppc: add dummy read/write methods

Git-commit: 2c9fb3b784000c1df32231e1c2464bb2e3fc4620
References: bsc#1173612, CVE-2020-15469

Add tz-ppc-dummy mmio read/write methods to avoid assert failure
during initialisation.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <20200811114133.672647-8-ppandit@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 hw/misc/tz-ppc.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/hw/misc/tz-ppc.c b/hw/misc/tz-ppc.c
index 2e04837bea989f855e225833e5cf..45f019a5068d0a8005bfbb9c3094 100644
--- a/hw/misc/tz-ppc.c
+++ b/hw/misc/tz-ppc.c
@@ -192,7 +192,21 @@ static bool tz_ppc_dummy_accepts(void *opaque, hwaddr addr,
     g_assert_not_reached();
 }
 
+static uint64_t tz_ppc_dummy_read(void *opaque, hwaddr addr, unsigned size)
+{
+    g_assert_not_reached();
+}
+
+static void tz_ppc_dummy_write(void *opaque, hwaddr addr,
+                                        uint64_t data, unsigned size)
+{
+    g_assert_not_reached();
+}
+
 static const MemoryRegionOps tz_ppc_dummy_ops = {
+    /* define r/w methods to avoid assert failure in memory_region_init_io */
+    .read = tz_ppc_dummy_read,
+    .write = tz_ppc_dummy_write,
     .valid.accepts = tz_ppc_dummy_accepts,
 };