qemu/linux-user-Fake-proc-cpuinfo.patch

From: Alexander Graf <agraf@suse.de>
Date: Mon, 23 Jul 2012 10:24:14 +0200
Subject: linux-user: Fake /proc/cpuinfo
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Fedora 17 for ARM reads /proc/cpuinfo and fails if it doesn't contain
ARM related contents. This patch implements a quick hack to expose real
/proc/cpuinfo data taken from a real world machine.

The real fix would be to generate at least the flags automatically based
on the selected CPU. Please do not submit this patch upstream until this
has happened.

Signed-off-by: Alexander Graf <agraf@suse.de>
[AF: Rebased for v1.6 and v1.7]
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 linux-user/syscall.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 1a835798d19cc77da8d7ec6bdc7b..5cd29859d6ac5349f04c03996b12 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -7473,6 +7473,27 @@ static int open_self_stat(void *cpu_env, int fd)
     return 0;
 }
 
+#if defined(TARGET_ARM)
+static int open_cpuinfo(void *cpu_env, int fd)
+{
+    dprintf(fd,
+"Processor       : ARMv7 Processor rev 5 (v7l)\n"
+"BogoMIPS        : 799.53\n"
+"Features        : swp half thumb fastmult vfp edsp thumbee neon vfpv3\n"
+"CPU implementer : 0x41\n"
+"CPU architecture: 7\n"
+"CPU variant     : 0x2\n"
+"CPU part        : 0xc08\n"
+"CPU revision    : 5\n"
+"\n"
+"Hardware        : Genesi Efika MX (Smarttop)\n"
+"Revision        : 51030\n"
+"Serial          : 0000000000000000\n");
+
+    return 0;
+}
+#endif
+
 static int open_self_auxv(void *cpu_env, int fd)
 {
     CPUState *cpu = env_cpu((CPUArchState *)cpu_env);
@@ -7627,6 +7648,9 @@ static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags,
 #if defined(TARGET_SPARC) || defined(TARGET_HPPA)
         { "/proc/cpuinfo", open_cpuinfo, is_proc },
 #endif
+#if defined(TARGET_ARM)
+        { "cpuinfo", open_cpuinfo, is_proc_myself },
+#endif
 #if defined(TARGET_M68K)
         { "/proc/hardware", open_hardware, is_proc },
 #endif