diff options
| author | KONRAD Frederic | 2017-02-03 16:32:12 +0100 |
|---|---|---|
| committer | Edgar E. Iglesias | 2017-06-27 15:09:15 +0200 |
| commit | 71b9a45330fe220d11a7a187efc477745dffbd26 (patch) | |
| tree | f63add29216d923b1b0d59648e886bf3fb44e345 /accel/tcg | |
| parent | cputlb: move get_page_addr_code (diff) | |
| download | qemu-71b9a45330fe220d11a7a187efc477745dffbd26.tar.gz qemu-71b9a45330fe220d11a7a187efc477745dffbd26.tar.xz qemu-71b9a45330fe220d11a7a187efc477745dffbd26.zip | |
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 <rth@twiddle.net>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Diffstat (limited to 'accel/tcg')
| -rw-r--r-- | accel/tcg/cputlb.c | 6 |
1 files 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; |