File 0018-linux-user-Fake-proc-cpuinfo.patch of Package qemu-testsuite.3829

Overview Repositories Revisions Requests Users Attributes Meta

File 0018-linux-user-Fake-proc-cpuinfo.patch of Package qemu-testsuite.3829

From cd30ac9a750b9db90738468a0423e4b63848cd68 Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Mon, 23 Jul 2012 10:24:14 +0200
Subject: [PATCH] linux-user: Fake /proc/cpuinfo
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

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 | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index b36273de54..7476689460 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -5697,6 +5697,25 @@ static int open_self_stat(void *cpu_env, int fd)
     return 0;
 }
 
+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;
+}
+
 static int open_self_auxv(void *cpu_env, int fd)
 {
     CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env);
@@ -5811,6 +5830,7 @@ static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags,
 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
         { "/proc/net/route", open_net_route, is_proc },
 #endif
+        { "cpuinfo", open_cpuinfo, is_proc_myself },
         { NULL, NULL, NULL }
     };

Places

File 0018-linux-user-Fake-proc-cpuinfo.patch of Package qemu-testsuite.3829

Places