From 55875fc4ca45a35e36134663ade946d86fe7bfcd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Salva=20Peir=C3=B3?= <speirofr@gmail.com>
Date: Mon, 27 Jul 2015 10:51:52 +0200
Subject: [PATCH] megasas: Add write function to handle write access to PCI BAR
3
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This patch fixes a QEMU SEGFAULT when a write operation is performed on
the memory region of the PCI BAR 3 (base address space).
When a writeb(0xe0000000) is performed the .write function is invoked to
handle the write access, however, since the .write is not initialised,
the call to 0, causes QEMU to SEGFAULT.
Signed-off-by: Salva Peiró <speirofr@gmail.com>
Acked-by: Hannes Reinecke <hare@suse.com>
Message-Id: <1437987112-24744-1-git-send-email-speirofr@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
hw/scsi/megasas.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
index 51ba9e0e6e..a04369c5ad 100644
--- a/hw/scsi/megasas.c
+++ b/hw/scsi/megasas.c
@@ -2202,8 +2202,15 @@ static uint64_t megasas_queue_read(void *opaque, hwaddr addr,
return 0;
}
+static void megasas_queue_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ return;
+}
+
static const MemoryRegionOps megasas_queue_ops = {
.read = megasas_queue_read,
+ .write = megasas_queue_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 8,