PPC: Fix large pages

We were masking 1TB SLB entries on the feature bit of 16 MB pages. Obviously
that breaks, so let's just ignore 1TB SLB entries for now and instead do
16MB pages correctly.

This fixes PPC64 Linux boot with -m above 256.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/target-ppc/helper.c b/target-ppc/helper.c
index a4fae31e3823ecee8f7090e03635db69f556e445..cd1c9fea0ec0f11448f4e609e54508343f413f70 100644 (file)
--- a/target-ppc/helper.c
+++ b/target-ppc/helper.c
@@ -736,14 +736,13 @@ static inline int slb_lookup(CPUPPCState *env, target_ulong eaddr,
                     PRIx32 "\n", __func__, n, slb->tmp64, slb->tmp);
         if (slb_is_valid(slb)) {
             /* SLB entry is valid */
+            mask = 0xFFFFFFFFF0000000ULL;
             if (slb->tmp & 0x8) {
-                /* 1 TB Segment */
-                mask = 0xFFFF000000000000ULL;
+                /* 16 MB PTEs */
                 if (target_page_bits)
-                    *target_page_bits = 24; // XXX 16M pages?
+                    *target_page_bits = 24;
             } else {
-                /* 256MB Segment */
-                mask = 0xFFFFFFFFF0000000ULL;
+                /* 4 KB PTEs */
                 if (target_page_bits)
                     *target_page_bits = TARGET_PAGE_BITS;
             }