cputlb: update TLB entry/index after tlb_fill
We are failing to take into account that tlb_fill() can cause a
TLB resize, which renders prior TLB entry pointers/indices stale.
Fix it by re-doing the TLB entry lookups immediately after tlb_fill.
Fixes: 86e1eff8bc
("tcg: introduce dynamic TLB sizing", 2019-01-28)
Reported-by: Max Filippov <jcmvbkbc@gmail.com>
Tested-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20190209162745.12668-3-cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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@ -1045,6 +1045,8 @@ tb_page_addr_t get_page_addr_code(CPUArchState *env, target_ulong addr)
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if (unlikely(!tlb_hit(entry->addr_code, addr))) {
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if (!VICTIM_TLB_HIT(addr_code, addr)) {
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tlb_fill(ENV_GET_CPU(env), addr, 0, MMU_INST_FETCH, mmu_idx, 0);
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index = tlb_index(env, mmu_idx, addr);
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entry = tlb_entry(env, mmu_idx, addr);
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}
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assert(tlb_hit(entry->addr_code, addr));
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}
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@ -1125,6 +1127,8 @@ static void *atomic_mmu_lookup(CPUArchState *env, target_ulong addr,
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if (!VICTIM_TLB_HIT(addr_write, addr)) {
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tlb_fill(ENV_GET_CPU(env), addr, 1 << s_bits, MMU_DATA_STORE,
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mmu_idx, retaddr);
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index = tlb_index(env, mmu_idx, addr);
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tlbe = tlb_entry(env, mmu_idx, addr);
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}
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tlb_addr = tlb_addr_write(tlbe) & ~TLB_INVALID_MASK;
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}
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@ -129,6 +129,8 @@ WORD_TYPE helper_le_ld_name(CPUArchState *env, target_ulong addr,
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if (!VICTIM_TLB_HIT(ADDR_READ, addr)) {
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tlb_fill(ENV_GET_CPU(env), addr, DATA_SIZE, READ_ACCESS_TYPE,
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mmu_idx, retaddr);
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index = tlb_index(env, mmu_idx, addr);
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entry = tlb_entry(env, mmu_idx, addr);
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}
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tlb_addr = entry->ADDR_READ;
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}
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@ -198,6 +200,8 @@ WORD_TYPE helper_be_ld_name(CPUArchState *env, target_ulong addr,
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if (!VICTIM_TLB_HIT(ADDR_READ, addr)) {
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tlb_fill(ENV_GET_CPU(env), addr, DATA_SIZE, READ_ACCESS_TYPE,
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mmu_idx, retaddr);
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index = tlb_index(env, mmu_idx, addr);
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entry = tlb_entry(env, mmu_idx, addr);
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}
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tlb_addr = entry->ADDR_READ;
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}
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@ -294,6 +298,8 @@ void helper_le_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val,
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if (!VICTIM_TLB_HIT(addr_write, addr)) {
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tlb_fill(ENV_GET_CPU(env), addr, DATA_SIZE, MMU_DATA_STORE,
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mmu_idx, retaddr);
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index = tlb_index(env, mmu_idx, addr);
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entry = tlb_entry(env, mmu_idx, addr);
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}
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tlb_addr = tlb_addr_write(entry) & ~TLB_INVALID_MASK;
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}
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@ -372,6 +378,8 @@ void helper_be_st_name(CPUArchState *env, target_ulong addr, DATA_TYPE val,
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if (!VICTIM_TLB_HIT(addr_write, addr)) {
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tlb_fill(ENV_GET_CPU(env), addr, DATA_SIZE, MMU_DATA_STORE,
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mmu_idx, retaddr);
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index = tlb_index(env, mmu_idx, addr);
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entry = tlb_entry(env, mmu_idx, addr);
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}
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tlb_addr = tlb_addr_write(entry) & ~TLB_INVALID_MASK;
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}
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