clear-pkgs-linux-iot-lts2018/0902-trusty-Add-VMM-PANIC-dump-data.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: "Yan, Xiangyang" <xiangyangx.yan@intel.com>
Date: Wed, 11 Jan 2017 01:26:27 +0000
Subject: [PATCH] trusty: Add VMM PANIC dump data.

1. Increase the alloced size of dump data field to 4 page;

2. Kick off '\r' character in dump data which is outputted
   from mon_vsprintf_s() in evmm code;

Change-Id: I255d97c2a7e898c8d4e1f15777ddd7f7c11af2b0
Tracked-On: OAM-34720
Signed-off-by: Yan, Xiangyang <xiangyangx.yan@intel.com>
Reviewed-by: Gross, Mark <mark.gross@intel.com>
---
 drivers/trusty/trusty-log.c | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/trusty/trusty-log.c b/drivers/trusty/trusty-log.c
index a066481c4f1d..8091a596a5e3 100644
--- a/drivers/trusty/trusty-log.c
+++ b/drivers/trusty/trusty-log.c
@@ -154,15 +154,28 @@ static void trusty_vmm_dump_header(struct deadloop_dump *dump)
 static void trusty_vmm_dump_data(struct deadloop_dump *dump)
 {
 	struct dump_data *dump_data;
-	int i;
+	char *p, *pstr;
 
 	if (!dump)
 		return;
 
 	dump_data = &(dump->data);
 
-	for (i = 0; i < dump_data->length; i++)
-		pr_info("%c", dump_data->data[i]);
+	pstr = (char *)dump_data->data;
+	for (p = pstr; p < ((char *)dump_data->data + dump_data->length); p++) {
+		if (*p == '\r') {
+			*p = 0x00;
+		} else if (*p == '\n') {
+			*p = 0x00;
+			pr_info("%s\n", pstr);
+			pstr = (char *)(p + 1);
+		}
+	}
+	/* dump the characters in the last line */
+	if ((pstr - (char *)(dump_data->data)) < dump_data->length) {
+		*p = 0x00;
+		pr_info("%s\n", pstr);
+	}
 }
 
 static int trusty_vmm_panic_notify(struct notifier_block *nb,
@@ -287,7 +300,7 @@ static int trusty_log_probe(struct platform_device *pdev)
 	}
 
 	/* allocate debug buffer for vmm panic dump */
-	g_vmm_debug_buf = get_zeroed_page(GFP_KERNEL);
+	g_vmm_debug_buf = __get_free_pages(GFP_KERNEL | __GFP_ZERO, 2);
 	if (!g_vmm_debug_buf) {
 		result = -ENOMEM;
 		goto error_alloc_vmm;
-- 
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