diff --git a/redhat-rpm-config.spec b/redhat-rpm-config.spec
index fa65527..a57a923 100644
--- a/redhat-rpm-config.spec
+++ b/redhat-rpm-config.spec
@@ -6,7 +6,7 @@
 
 Summary: Red Hat specific rpm configuration files
 Name: redhat-rpm-config
-Version: 26
+Version: 27
 Release: 1%{?dist}
 # No version specified.
 License: GPL+
@@ -135,6 +135,9 @@ install -p -m 755 -t %{buildroot}%{_rpmconfigdir} kmod.prov
 %{_rpmconfigdir}/macros.d/macros.kmp
 
 %changelog
+* Wed Dec 10 2014 Dan Horák <dan[at]danny.cz> - 27-1
+- Explicitly set -mcpu/-mtune for ppc64p7 and ppc64le to override rpm defaults
+
 * Mon Sep 22 2014 Panu Matilainen <pmatilai@redhat.com> - 26-1
 - Gnat macros are now in a package of their own (#1133632)
 
diff --git a/rpmrc b/rpmrc
index 30d448a..72855d5 100644
--- a/rpmrc
+++ b/rpmrc
@@ -28,7 +28,8 @@ optflags: ppc %{__global_cflags} -m32
 optflags: ppciseries %{__global_cflags} -m32
 optflags: ppcpseries %{__global_cflags} -m32
 optflags: ppc64 %{__global_cflags} -m64
-optflags: ppc64le %{__global_cflags} -m64
+optflags: ppc64p7 %{__global_cflags} -m64 -O3 -mcpu=power7 -mtune=power7
+optflags: ppc64le %{__global_cflags} -m64 -mcpu=power7 -mtune=power8
 optflags: ppc64iseries %{__global_cflags} -m64
 optflags: ppc64pseries %{__global_cflags} -m64
 optflags: ppc8260 %{__global_cflags} -m32