powerpc/mm: Introduce MMU features

We're soon running out of CPU features and I need to add some new
ones for various MMU related bits, so this patch separates the MMU
features from the CPU features.  I moved over the 32-bit MMU related
ones, added base features for MMU type families, but didn't move
over any 64-bit only feature yet.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 65639a43e644..e619d424f73d 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -567,6 +567,11 @@ static __init int vdso_fixup_features(struct lib32_elfinfo *v32,
                 do_feature_fixups(cur_cpu_spec->cpu_features,
                                   start64, start64 + size64);
 
+        start64 = find_section64(v64->hdr, "__mmu_ftr_fixup", &size64);
+        if (start64)
+                do_feature_fixups(cur_cpu_spec->mmu_features,
+                                  start64, start64 + size64);
+
         start64 = find_section64(v64->hdr, "__fw_ftr_fixup", &size64);
         if (start64)
                 do_feature_fixups(powerpc_firmware_features,
@@ -583,6 +588,11 @@ static __init int vdso_fixup_features(struct lib32_elfinfo *v32,
                 do_feature_fixups(cur_cpu_spec->cpu_features,
                                   start32, start32 + size32);
 
+        start32 = find_section32(v32->hdr, "__mmu_ftr_fixup", &size32);
+        if (start32)
+                do_feature_fixups(cur_cpu_spec->mmu_features,
+                                  start32, start32 + size32);
+
 #ifdef CONFIG_PPC64
         start32 = find_section32(v32->hdr, "__fw_ftr_fixup", &size32);
         if (start32)