From 61a36c9b5a12889994e6c45f4a175efcd63936db Mon Sep 17 00:00:00 2001 From: David Gibson Date: Fri, 15 Jan 2016 16:12:09 +1100 Subject: target-ppc: Add new TLB invalidate by HPTE call for hash64 MMUs When HPTEs are removed or modified by hypercalls on spapr, we need to invalidate the relevant pages in the qemu TLB. Currently we do that by doing some complicated calculations to work out the right encoding for the tlbie instruction, then passing that to ppc_tlb_invalidate_one()... which totally ignores the argument and flushes the whole tlb. Avoid that by adding a new flush-by-hpte helper in mmu-hash64.c. Signed-off-by: David Gibson Acked-by: Benjamin Herrenschmidt Reviewed-by: Alexander Graf --- target-ppc/mmu-hash64.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'target-ppc/mmu-hash64.c') diff --git a/target-ppc/mmu-hash64.c b/target-ppc/mmu-hash64.c index f4c25b7d14..565a0f484a 100644 --- a/target-ppc/mmu-hash64.c +++ b/target-ppc/mmu-hash64.c @@ -708,3 +708,15 @@ void ppc_hash64_store_hpte(PowerPCCPU *cpu, env->htab_base + pte_index + HASH_PTE_SIZE_64 / 2, pte1); } } + +void ppc_hash64_tlb_flush_hpte(PowerPCCPU *cpu, + target_ulong pte_index, + target_ulong pte0, target_ulong pte1) +{ + /* + * XXX: given the fact that there are too many segments to + * invalidate, and we still don't have a tlb_flush_mask(env, n, + * mask) in QEMU, we just invalidate all TLBs + */ + tlb_flush(CPU(cpu), 1); +} -- cgit v1.2.3