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From c313f89c33217ac0e471554dace2144718f86669 Mon Sep 17 00:00:00 2001
From: Martin Jansa <Martin.Jansa@gmail.com>
Date: Thu, 13 May 2010 12:23:40 +0200
Subject: [PATCH] linux-user: use default mmap_min_addr 65536 when /proc/sys/vm/mmap_min_addr cannot be read
* 65536 is default at least for ubuntu and fedora.
---
linux-user/main.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
Upstream-Status: Pending
Index: qemu-0.14.0/linux-user/main.c
===================================================================
--- qemu-0.14.0.orig/linux-user/main.c
+++ qemu-0.14.0/linux-user/main.c
@@ -36,6 +36,7 @@
#include "envlist.h"
#define DEBUG_LOGFILE "/tmp/qemu.log"
+#define MMAP_MIN_ADDR_DEFAULT 65536
char *exec_path;
@@ -3010,8 +3011,14 @@ int main(int argc, char **argv, char **e
if (fscanf(fp, "%lu", &tmp) == 1) {
mmap_min_addr = tmp;
qemu_log("host mmap_min_addr=0x%lx\n", mmap_min_addr);
+ } else {
+ qemu_log("cannot read value from /proc/sys/vm/mmap_min_addr, assuming %d\n", MMAP_MIN_ADDR_DEFAULT);
+ mmap_min_addr = MMAP_MIN_ADDR_DEFAULT;
}
fclose(fp);
+ } else {
+ qemu_log("cannot open /proc/sys/vm/mmap_min_addr for reading, assuming %d\n", MMAP_MIN_ADDR_DEFAULT);
+ mmap_min_addr = MMAP_MIN_ADDR_DEFAULT;
}
}
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