[Qemu-devel] [PATCH v2 06/12] linux-user: AArch64 requires at least 3.8.0

[Qemu-devel] [PATCH v2 06/12] linux-user: AArch64 requires at least 3.8.0

[John Rigby]

From: Alexander Graf <agraf@suse.de>

Glibc 1.17 checks for the host kernel version on startup. Unfortunately,
it also checks whether the host kernel version is recent enough for the
target to run at all.

Since AArch64 support only got introduced in 3.8.0, that means that glibc
refuses to run on any older kernel version than that.

To allow for execution of linux-user guests even on older host kernels,
let's always fake the kernel version to 3.8.0 on AArch64 guests.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
 linux-user/syscall.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 30e93bc..1c23314 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -316,7 +316,12 @@ static int sys_uname(struct new_utsname *buf)
   memset(buf, 0, sizeof(*buf));
   COPY_UTSNAME_FIELD(buf->sysname, uts_buf.sysname);
   COPY_UTSNAME_FIELD(buf->nodename, uts_buf.nodename);
+#ifdef TARGET_AARCH64
+  /* glibc refuses to run on older kernels */
+  COPY_UTSNAME_FIELD(buf->release, "3.8.0");
+#else
   COPY_UTSNAME_FIELD(buf->release, uts_buf.release);
+#endif
   COPY_UTSNAME_FIELD(buf->version, uts_buf.version);
   COPY_UTSNAME_FIELD(buf->machine, uts_buf.machine);
 #ifdef _GNU_SOURCE
-- 
1.7.9.5