On 2022/1/24 上午8:59, Alistair Francis wrote:
From: Alistair Francis <alistair.fran...@wdc.com>
This series adds a MO_ op to specify that a load instruction should
produce a store fault. This is used on RISC-V to produce a store/amo
fault when an atomic access fails.
Hi Alistair,
As Richard said, we can address this issue in two ways, probe_read(I
think probe_write is typo) or with another new MO_ op.
In my opinion use MO_op in io_readx may be not right because the issue
is not only with IO access. And MO_ op in io_readx is too later because
the exception has been created when tlb_fill.
Currently tlb_fill doesn't receive this parameter. Is it possible to add
a new Memop parameter to tlb_fill?
Thanks,
Zhiwei
This fixes: https://gitlab.com/qemu-project/qemu/-/issues/594
Alistair Francis (2):
accel: tcg: Allow forcing a store fault on read ops
targett/riscv: rva: Correctly generate a store/amo fault
include/exec/memop.h | 2 +
accel/tcg/cputlb.c | 11 ++++-
target/riscv/insn_trans/trans_rva.c.inc | 56 ++++++++++++++++---------
3 files changed, 48 insertions(+), 21 deletions(-)
