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target-ppc: fix left shift overflow in hpte_page_shift 

ps->pte_enc is a 32-bit value, which is shifted left and then compared
to a 64-bit value.  It needs a cast before the shift.

Reported by Coverity.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
master
Paolo Bonzini 2016-07-15 17:22:10 +02:00 committed by David Gibson
parent 28f3331887
commit b56d417b8d
1 changed files with 1 additions and 1 deletions
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2
target-ppc/mmu-hash64.c
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@ -478,7 +478,7 @@ static unsigned hpte_page_shift(const struct ppc_one_seg_page_size *sps,
mask = ((1ULL << ps->page_shift) - 1) & HPTE64_R_RPN;
if ((pte1 & mask) == (ps->pte_enc << HPTE64_R_RPN_SHIFT)) {
if ((pte1 & mask) == ((uint64_t)ps->pte_enc << HPTE64_R_RPN_SHIFT)) {
return ps->page_shift;
}
}