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From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Mon, 22 Jan 2018 14:04:40 +0100
Subject: [PATCH 2/3] dump-guest-memory.py: fix python 2 support
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RH-Author: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: <20180122140440.24988-1-marcandre.lureau@redhat.com>
Patchwork-id: 78692
O-Subject: [RHEL-7.5 qemu-kvm PATCH v2] dump-guest-memory.py: fix python 2 support
Bugzilla: 1411490
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>

Python GDB support may use Python 2 or 3.

Inferior.read_memory() may return a 'buffer' with Python 2 or a
'memoryview' with Python 3 (see also
https://sourceware.org/gdb/onlinedocs/gdb/Inferiors-In-Python.html)

The elf.add_vmcoreinfo_note() method expects a "bytes" object. Wrap
the returned memory with bytes(), which works with both 'memoryview'
and 'buffer'.

Fixes a regression introduced with commit
d23bfa91b7789534d16ede6cb7d925bfac3f3c4c ("add vmcoreinfo").

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

(cherry picked from commit 6f49ec4034e55dfb675a56a62c9579384f7fb8cc)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 scripts/dump-guest-memory.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/dump-guest-memory.py b/scripts/dump-guest-memory.py
index 8a13db0..adb942e 100644
--- a/scripts/dump-guest-memory.py
+++ b/scripts/dump-guest-memory.py
@@ -564,7 +564,7 @@ shape and this command should mostly work."""
 
         vmcoreinfo = self.phys_memory_read(addr, size)
         if vmcoreinfo:
-            self.elf.add_vmcoreinfo_note(vmcoreinfo.tobytes())
+            self.elf.add_vmcoreinfo_note(bytes(vmcoreinfo))
 
     def invoke(self, args, from_tty):
         """Handles command invocation from gdb."""
-- 
1.8.3.1