From 71b9a45330fe220d11a7a187efc477745dffbd26 Mon Sep 17 00:00:00 2001 From: KONRAD Frederic Date: Fri, 3 Feb 2017 16:32:12 +0100 Subject: [PATCH] cputlb: fix the way get_page_addr_code fills the tlb get_page_addr_code(..) does a cpu_ldub_code to fill the tlb: This can lead to some side effects if a device is mapped at this address. So this patch replaces the cpu_memory_ld by a tlb_fill. Reviewed-by: Richard Henderson Reviewed-by: Edgar E. Iglesias Signed-off-by: KONRAD Frederic Signed-off-by: Edgar E. Iglesias --- accel/tcg/cputlb.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c index 5d6c755c2a..95265a01ec 100644 --- a/accel/tcg/cputlb.c +++ b/accel/tcg/cputlb.c @@ -849,8 +849,10 @@ tb_page_addr_t get_page_addr_code(CPUArchState *env, target_ulong addr) index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); mmu_idx = cpu_mmu_index(env, true); if (unlikely(env->tlb_table[mmu_idx][index].addr_code != - (addr & TARGET_PAGE_MASK))) { - cpu_ldub_code(env, addr); + (addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK)))) { + if (!VICTIM_TLB_HIT(addr_read, addr)) { + tlb_fill(ENV_GET_CPU(env), addr, MMU_INST_FETCH, mmu_idx, 0); + } } iotlbentry = &env->iotlb[mmu_idx][index]; pd = iotlbentry->addr & ~TARGET_PAGE_MASK; -- GitLab