x86 mmiotrace: fix page-unaligned ioremaps

mmiotrace_ioremap() expects to receive the original unaligned map phys address
and size. Also fix {un,}register_kmmio_probe() to deal properly with
unaligned size.

Signed-off-by: Pekka Paalanen <pq@iki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/x86/mm/mmio-mod.c b/arch/x86/mm/mmio-mod.c
index a8d2a0019da4..278998c1998f 100644
--- a/arch/x86/mm/mmio-mod.c
+++ b/arch/x86/mm/mmio-mod.c
@@ -280,6 +280,7 @@ static void ioremap_trace_core(unsigned long offset, unsigned long size,
 {
         static atomic_t next_id;
         struct remap_trace *trace = kmalloc(sizeof(*trace), GFP_KERNEL);
+        /* These are page-unaligned. */
         struct mmiotrace_map map = {
                 .phys = offset,
                 .virt = (unsigned long)addr,