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From: | LIU Zhiwei |
Subject: | Re: [PATCH 0/6] target/riscv: Fix PMP related problem |
Date: | Tue, 18 Apr 2023 11:07:47 +0800 |
User-agent: | Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.10.0 |
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.htmlI 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(-)
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