Jarno, would you mind taking a look at this one?
On Fri, Oct 03, 2014 at 03:49:36PM -0700, Ben Pfaff wrote:
> The ovs-atomic-i586 implementation of atomic operations can implement
> 64-bit atomics more efficiently when SSE is supported. XenServer runs only
> on 64-bit capable processors, in 32-bit mode, so we know on XenServer that
> SSE and SSE2 are supported because they are architectural for amd64. Thus,
> this commit enables SSE and SSE2 when building for XenServer to get the
> improved atomics support.
>
> I tested that this successfully adds -msse -msse2 to the compiler flags
> inside a XenServer DDK, but I didn't actually run it on a real XenServer
> install.
>
> CC: Jarno Rajahalme <jarno.rajaha...@gmail.com>
> Signed-off-by: Ben Pfaff <b...@nicira.com>
> ---
> xenserver/openvswitch-xen.spec.in | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/xenserver/openvswitch-xen.spec.in
> b/xenserver/openvswitch-xen.spec.in
> index bd82681..7b6bfaf 100644
> --- a/xenserver/openvswitch-xen.spec.in
> +++ b/xenserver/openvswitch-xen.spec.in
> @@ -76,7 +76,7 @@ Open vSwitch Linux kernel module compiled against kernel
> version
> %setup -q -n openvswitch-%{openvswitch_version}
>
> %build
> -./configure --prefix=/usr --sysconfdir=/etc
> --localstatedir=%{_localstatedir}
> --with-linux=/lib/modules/%{xen_version}/build --enable-ssl
> +./configure --prefix=/usr --sysconfdir=/etc
> --localstatedir=%{_localstatedir}
> --with-linux=/lib/modules/%{xen_version}/build --enable-ssl CFLAGS='-g -O2
> -msse -msse2'
> make %{_smp_mflags}
>
> %install
> --
> 1.7.10.4
>
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