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PPC: Fix large pages

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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>
This commit is contained in:
Alexander Graf 2010-02-09 17:37:09 +01:00 committed by Michael S. Tsirkin
parent a2236d4820
commit b2eca4453f
1 changed files with 4 additions and 5 deletions
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9
target-ppc/helper.c
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@ -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;
}