[POWERPC] vdso: Fixes for cache block sizes

The current VDSO implementation is hardcoded to 128 byte cache blocks,
which are only used on IBM's 64-bit processors.

Convert it to get the cache block sizes out of vdso_data instead,
similar to how the ppc64 in-kernel cache flush does it.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 2322ba5cce4c..3702df7dc567 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -699,11 +699,22 @@ static int __init vdso_init(void)
         vdso_data->icache_size = ppc64_caches.isize;
         vdso_data->icache_line_size = ppc64_caches.iline_size;
 
+        /* XXXOJN: Blocks should be added to ppc64_caches and used instead */
+        vdso_data->dcache_block_size = ppc64_caches.dline_size;
+        vdso_data->icache_block_size = ppc64_caches.iline_size;
+        vdso_data->dcache_log_block_size = ppc64_caches.log_dline_size;
+        vdso_data->icache_log_block_size = ppc64_caches.log_iline_size;
+
         /*
          * Calculate the size of the 64 bits vDSO
          */
         vdso64_pages = (&vdso64_end - &vdso64_start) >> PAGE_SHIFT;
         DBG("vdso64_kbase: %p, 0x%x pages\n", vdso64_kbase, vdso64_pages);
+#else
+        vdso_data->dcache_block_size = L1_CACHE_BYTES;
+        vdso_data->dcache_log_block_size = L1_CACHE_SHIFT;
+        vdso_data->icache_block_size = L1_CACHE_BYTES;
+        vdso_data->icache_log_block_size = L1_CACHE_SHIFT;
 #endif /* CONFIG_PPC64 */