[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, 8 insertions, 0 deletions

diff --git a/include/asm-powerpc/vdso_datapage.h b/include/asm-powerpc/vdso_datapage.h
index 8a94f0eba5e9..f01393224b52 100644
--- a/include/asm-powerpc/vdso_datapage.h
+++ b/include/asm-powerpc/vdso_datapage.h
@@ -77,6 +77,10 @@ struct vdso_data {
         /* those additional ones don't have to be located anywhere
          * special as they were not part of the original systemcfg
          */
+        __u32 dcache_block_size;                /* L1 d-cache block size     */
+        __u32 icache_block_size;                /* L1 i-cache block size     */
+        __u32 dcache_log_block_size;            /* L1 d-cache log block size */
+        __u32 icache_log_block_size;            /* L1 i-cache log block size */
         __s32 wtom_clock_sec;                   /* Wall to monotonic clock */
         __s32 wtom_clock_nsec;
         __u32 syscall_map_64[SYSCALL_MAP_SIZE]; /* map of syscalls  */
@@ -99,6 +103,10 @@ struct vdso_data {
         __s32 wtom_clock_sec;                   /* Wall to monotonic clock */
         __s32 wtom_clock_nsec;
         __u32 syscall_map_32[SYSCALL_MAP_SIZE]; /* map of syscalls */
+        __u32 dcache_block_size;        /* L1 d-cache block size     */
+        __u32 icache_block_size;        /* L1 i-cache block size     */
+        __u32 dcache_log_block_size;    /* L1 d-cache log block size */
+        __u32 icache_log_block_size;    /* L1 i-cache log block size */
 };
 
 #endif /* CONFIG_PPC64 */