Re: [PATCH v3 4/6] ALSA: xen-front: Implement handling of shared buffers

From: Oleksandr Andrushchenko
Date: Tue May 22 2018 - 00:31:12 EST


On 05/21/2018 11:26 PM, Takashi Iwai wrote:
On Thu, 17 May 2018 08:26:16 +0200,
Takashi Iwai wrote:
On Tue, 15 May 2018 08:02:08 +0200,
Oleksandr Andrushchenko wrote:
On 05/15/2018 09:01 AM, Takashi Iwai wrote:
On Tue, 15 May 2018 07:46:38 +0200,
Oleksandr Andrushchenko wrote:
On 05/14/2018 11:28 PM, Takashi Iwai wrote:
On Mon, 14 May 2018 08:27:40 +0200,
Oleksandr Andrushchenko wrote:
--- /dev/null
+++ b/sound/xen/xen_snd_front_shbuf.c
@@ -0,0 +1,193 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
+
+/*
+ * Xen para-virtual sound device
+ *
+ * Copyright (C) 2016-2018 EPAM Systems Inc.
+ *
+ * Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
+ */
+
+#include <xen/xen.h>
+#include <xen/xenbus.h>
+
+#include "xen_snd_front_shbuf.h"
Hm, with the local build test, I get the following error:

CC [M] sound/xen/xen_snd_front_shbuf.o
In file included from sound/xen/xen_snd_front_shbuf.c:11:0:
./include/xen/xen.h:18:8: error: unknown type name âboolâ
extern bool xen_pvh;
^~~~
In file included from ./include/xen/interface/xen.h:30:0,
from ./include/xen/xen.h:29,
from sound/xen/xen_snd_front_shbuf.c:11:
./arch/x86/include/asm/xen/interface.h:92:21: error: unknown type name âuint64_tâ
DEFINE_GUEST_HANDLE(uint64_t);
^

Adding #include <linux/kernel.h> fixed the issue.

Did you really test your patches with the latest Linus tree?
My bad, it does build for ARM (which is my target), but also does
need "#include <linux/kernel.h>" for x86 which I didn't build this time.
Sorry about that.

Do you want me to resend this single patch or you can make the change
while applying?
Yes, it's fine.
Thank you
FWIW, the patches are in topic/xen branch in sound.git tree, and I'll
keep boiling for a while to see if any issues are caught by 0day bot.
... and now the topic/xen branch got merged to for-next, targeted for
4.18.

Thanks for your patient works!


Takashi
Great news, thank you,
Oleksandr