133 lines
4.7 KiB
Diff
133 lines
4.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
||
From: "Li, Fei1" <fei1.li@intel.com>
|
||
Date: Fri, 31 Aug 2018 10:58:58 +0800
|
||
Subject: [PATCH] HVLog: reserve memory for ACRN HVLog
|
||
|
||
Change-Id: Ic87c83510d1405c791ce9c47872b960f801d45c2
|
||
Tracked-On: 220304
|
||
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
|
||
---
|
||
drivers/acrn/Kconfig | 7 ++++
|
||
drivers/acrn/Makefile | 3 +-
|
||
drivers/acrn/acrn_hvlog.c | 83 +++++++++++++++++++++++++++++++++++++++
|
||
3 files changed, 92 insertions(+), 1 deletion(-)
|
||
create mode 100644 drivers/acrn/acrn_hvlog.c
|
||
|
||
diff --git a/drivers/acrn/Kconfig b/drivers/acrn/Kconfig
|
||
index 08b24a168167..9056a4f1f20a 100644
|
||
--- a/drivers/acrn/Kconfig
|
||
+++ b/drivers/acrn/Kconfig
|
||
@@ -11,3 +11,10 @@ config ACRN_TRACE
|
||
This is the Trace driver for the Intel ACRN hypervisor.
|
||
You can say y to build it into the kernel, or m to build
|
||
it as a module.
|
||
+
|
||
+config ACRN_HVLOG
|
||
+ bool "Intel ACRN Hypervisor Logmsg support"
|
||
+ select ACRN_SHARED_BUFFER
|
||
+ ---help---
|
||
+ This is the Trace driver for the Intel ACRN hypervisor log.
|
||
+ You can say y to build it into the kernel.
|
||
diff --git a/drivers/acrn/Makefile b/drivers/acrn/Makefile
|
||
index 5430f4fa06fd..05dd698e8171 100644
|
||
--- a/drivers/acrn/Makefile
|
||
+++ b/drivers/acrn/Makefile
|
||
@@ -1,2 +1,3 @@
|
||
obj-$(CONFIG_ACRN_SHARED_BUFFER) += sbuf.o
|
||
-obj-$(CONFIG_ACRN_TRACE) += acrn_trace.o
|
||
\ No newline at end of file
|
||
+obj-$(CONFIG_ACRN_TRACE) += acrn_trace.o
|
||
+obj-$(CONFIG_ACRN_HVLOG) += acrn_hvlog.o
|
||
diff --git a/drivers/acrn/acrn_hvlog.c b/drivers/acrn/acrn_hvlog.c
|
||
new file mode 100644
|
||
index 000000000000..9c30fba58faf
|
||
--- /dev/null
|
||
+++ b/drivers/acrn/acrn_hvlog.c
|
||
@@ -0,0 +1,83 @@
|
||
+/*
|
||
+ * ACRN Hypervisor logmsg
|
||
+ *
|
||
+ * This file is provided under a dual BSD/GPLv2 license. When using or
|
||
+ * redistributing this file, you may do so under either license.
|
||
+ *
|
||
+ * GPL LICENSE SUMMARY
|
||
+ *
|
||
+ * Copyright (c) 2017 Intel Corporation. All rights reserved.
|
||
+ *
|
||
+ * This program is free software; you can redistribute it and/or modify
|
||
+ * it under the terms of version 2 of the GNU General Public License as
|
||
+ * published by the Free Software Foundation.
|
||
+ *
|
||
+ * This program is distributed in the hope that it will be useful, but
|
||
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
+ * General Public License for more details.
|
||
+ *
|
||
+ * Contact Information: Li Fei <fei1.li@intel.com>
|
||
+ *
|
||
+ * BSD LICENSE
|
||
+ *
|
||
+ * Copyright (C) 2017 Intel Corporation. All rights reserved.
|
||
+ *
|
||
+ * Redistribution and use in source and binary forms, with or without
|
||
+ * modification, are permitted provided that the following conditions
|
||
+ * are met:
|
||
+ *
|
||
+ * * Redistributions of source code must retain the above copyright
|
||
+ * notice, this list of conditions and the following disclaimer.
|
||
+ * * Redistributions in binary form must reproduce the above copyright
|
||
+ * notice, this list of conditions and the following disclaimer in
|
||
+ * the documentation and/or other materials provided with the
|
||
+ * distribution.
|
||
+ * * Neither the name of Intel Corporation nor the names of its
|
||
+ * contributors may be used to endorse or promote products derived
|
||
+ * from this software without specific prior written permission.
|
||
+ *
|
||
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
+ *
|
||
+ * Li Fei <fei1.li@intel.com>
|
||
+ *
|
||
+ */
|
||
+#include <linux/memblock.h>
|
||
+#include <linux/kernel.h>
|
||
+
|
||
+static unsigned long long hvlog_buf_size;
|
||
+static unsigned long long hvlog_buf_base;
|
||
+
|
||
+static int __init early_hvlog(char *p)
|
||
+{
|
||
+ int ret;
|
||
+
|
||
+ pr_debug("%s(%s)\n", __func__, p);
|
||
+ hvlog_buf_size = memparse(p, &p);
|
||
+ if (*p != '@')
|
||
+ return 0;
|
||
+ hvlog_buf_base = memparse(p + 1, &p);
|
||
+
|
||
+ if (!!hvlog_buf_base && !!hvlog_buf_size) {
|
||
+ ret = memblock_reserve(hvlog_buf_base, hvlog_buf_size);
|
||
+ if (ret) {
|
||
+ pr_err("%s: Error reserving hvlog memblock\n",
|
||
+ __func__);
|
||
+ hvlog_buf_base = 0;
|
||
+ hvlog_buf_size = 0;
|
||
+ return ret;
|
||
+ }
|
||
+ }
|
||
+ return 0;
|
||
+}
|
||
+early_param("hvlog", early_hvlog);
|
||
--
|
||
https://clearlinux.org
|
||
|