On 2023/4/13 17:01, Weiwei Li wrote:
This patchset tries to fix the PMP bypass problem issue
https://gitlab.com/qemu-project/qemu/-/issues/1542
Please add your analysis of this issue here.
By the way, I think this problem is introduced by
https://www.mail-archive.com/qemu-devel@nongnu.org/msg939331.html
I have commented on how to correct this patch. But by accident, it has
been merged.
Zhiwei
The port is available here:
https://github.com/plctlab/plct-qemu/tree/plct-pmp-fix
Weiwei Li (6):
target/riscv: Update pmp_get_tlb_size()
target/riscv: Move pmp_get_tlb_size apart from
get_physical_address_pmp
target/riscv: flush tlb when pmpaddr is updated
target/riscv: Flush TLB only when pmpcfg/pmpaddr really changes
target/riscv: flush tb when PMP entry changes
accel/tcg: Remain TLB_INVALID_MASK in the address when TLB is
re-filled
accel/tcg/cputlb.c | 7 -----
target/riscv/cpu_helper.c | 19 ++++---------
target/riscv/pmp.c | 60 ++++++++++++++++++++++++++-------------
target/riscv/pmp.h | 3 +-
4 files changed, 47 insertions(+), 42 deletions(-)
