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[1/1] kvmvapic: add ioport read accessor

Message ID 0c1cd0ae2a4faabeb948b9a07ea1696e853de174.1367844188.git.gleb@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Gleb Natapov May 6, 2013, 12:44 p.m. UTC 
From: Marcelo Tosatti <mtosatti@redhat.com>

Necessary since memory region accessor assumes read and write
methods are registered. Otherwise reading I/O port 0x7e segfaults.

https://bugzilla.redhat.com/show_bug.cgi?id=954306

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
 hw/i386/kvmvapic.c |    6 ++++++
 1 file changed, 6 insertions(+)
diff mbox

Patch

diff --git a/hw/i386/kvmvapic.c b/hw/i386/kvmvapic.c
index 5b558aa..655483b 100644
--- a/hw/i386/kvmvapic.c
+++ b/hw/i386/kvmvapic.c
@@ -687,8 +687,14 @@  static void vapic_write(void *opaque, hwaddr addr, uint64_t data,
     }
 }
 
+static uint64_t vapic_read(void *opaque, hwaddr addr, unsigned size)
+{
+    return 0xffffffff;
+}
+
 static const MemoryRegionOps vapic_ops = {
     .write = vapic_write,
+    .read = vapic_read,
     .endianness = DEVICE_NATIVE_ENDIAN,
 };