Re: [Xen-users] /lib/tls glibc libraries error

["Fajar A. Nugraha" <list@xxxxxxxxx>]

On Tue, Jan 4, 2011 at 11:37 AM, mike <mikecbe@xxxxxxxxxxxxxx> wrote:

I have uploaded the slackware12.1 image to the Xen server. It is working fine but while check the cat /var/log/syslog  getting below warning.

***************************************************************
***************************************************************
    ◦    WARNING: Currently emulating unsupported memory accesses **
    ◦    in /lib/tls glibc libraries. The emulation is **
    ◦    slow. To ensure full performance you should **
    ◦    install a 'xen-friendly' (nosegneg) version of **
    ◦    the library, or disable tls support by executing **
    ◦    the following as root: **
    ◦    mv /lib/tls /lib/tls.disabled **
    ◦    Offending process: init (pid=1) **
***************************************************************
***************************************************************

I have installed it then sysvinit, mdadm packages, but still getting same warning.

If they supprt x86_64, the easiest way is to use x86_64 OS version instead of i686.

Distros that officially support xen (like RHEL/Centos5) has a workaround for that by bundling xen-friendly glibc by default and having this file, which is part of kernel-xen rpm:

# cat /etc/ld.so.conf.d/kernelcap-2.6.18-194.el5.conf

# This directive teaches ldconfig to search in nosegneg subdirectories

# and cache the DSOs there with extra bit 0 set in their hwcap match

# fields.  In Xen guest kernels, the vDSO tells the dynamic linker to

# search in nosegneg subdirectories and to match this extra hwcap bit

# in the ld.so.cache file.

hwcap 0 nosegneg

You might try searching if Slackware has a corresponding xen kernel or glibc and use that. If not, try creating the file manually, run  "ldconfig", and recreate your initrd. If that still doesn't work, use 64bit OS.

-- 

Fajar

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