Currently emulating unsupported memory accesses warning for 10.04.01 on EC2 even with libc6-xen installed

[Scott Moser]

On Wed, 24 Nov 2010, W. Andrew Loe III wrote:

> I am seeing this warning in dmesg, but as far as I know it should not be there:
>
>     7.223411]
> [    7.223422]   ***************************************************************
> [    7.223428]   ***************************************************************
> [    7.223433]   ** WARNING: Currently emulating unsupported memory accesses  **
> [    7.223438]   **          in /lib/tls glibc libraries. The emulation is    **
> [    7.223443]   **          slow. To ensure full performance you should      **
> [    7.223448]   **          install a 'xen-friendly' (nosegneg) version of   **
> [    7.223453]   **          the library, or disable tls support by executing **
> [    7.223458]   **          the following as root:                           **
> [    7.223466]   **          mv /lib/tls /lib/tls.disabled                    **
> [    7.223472]   ** Offending process: nginx (pid=980)                        **
> [    7.223477]   ***************************************************************
> [    7.223482]   ***************************************************************
> [    7.223489]
>
> I am running 10.04.1 on EC2. libc6-xen is installed,
> /etc/ld.so.conf.d/xen.conf has the right options in it.

You should subscribe yourself to bug 669160.
https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/669160