From: Alexey Baturo <baturo.alexey@gmail.com>
Cc: baturo.alexey@gmail.com, richard.henderson@linaro.org,
space.monkey.delivers@gmail.com, palmer@dabbelt.com,
Alistair.Francis@wdc.com, sagark@eecs.berkeley.edu,
kbastian@mail.uni-paderborn.de, qemu-devel@nongnu.org,
qemu-riscv@nongnu.org
Subject: [PATCH v9 0/6] Pointer Masking update for Zjpm v1.0
Date: Sat, 11 May 2024 13:10:47 +0300 [thread overview]
Message-ID: <20240511101053.1875596-1-me@deliversmonkey.space> (raw)
From: Alexey Baturo <baturo.alexey@gmail.com>
Hi,
It looks like Pointer Masking spec has reached v1.0 and been frozen,
rebasing on riscv-to-apply.next branch and resubmitting patches.
Thanks.
[v8]:
Rebasing patches on current qemu branch and resubmitting them.
[v7]:
I'm terribly sorry, but previous rebase went wrong and somehow I missed it.
This time I double-checked rebased version.
This patch series is properly rebased on https://github.com/alistair23/qemu/tree/riscv-to-apply.next
[v6]:
This patch series is rebased on https://github.com/alistair23/qemu/tree/riscv-to-apply.next
[v5]:
This patch series targets Zjpm v0.8 extension.
The spec itself could be found here: https://github.com/riscv/riscv-j-extension/blob/8088461d8d66a7676872b61c908cbeb7cf5c5d1d/zjpm-spec.pdf
This patch series is updated after the suggested comments:
- add "x-" to the extension names to indicate experimental
[v4]:
Patch series updated after the suggested comments:
- removed J-letter extension as it's unused
- renamed and fixed function to detect if address should be sign-extended
- zeroed unused context variables and moved computation logic to another patch
- bumped pointer masking version_id and minimum_version_id by 1
[v3]:
There patches are updated after Richard's comments:
- moved new tb flags to the end
- used tcg_gen_(s)extract to get the final address
- properly handle CONFIG_USER_ONLY
[v2]:
As per Richard's suggestion I made pmm field part of tb_flags.
It allowed to get rid of global variable to store pmlen.
Also it allowed to simplify all the machinery around it.
[v1]:
It looks like Zjpm v0.8 is almost frozen and we don't expect it change drastically anymore.
Compared to the original implementation with explicit base and mask CSRs, we now only have
several fixed options for number of masked bits which are set using existing CSRs.
The changes have been tested with handwritten assembly tests and LLVM HWASAN
test suite.
Alexey Baturo (6):
target/riscv: Remove obsolete pointer masking extension code.
target/riscv: Add new CSR fields for S{sn,mn,m}pm extensions as part
of Zjpm v0.8
target/riscv: Add helper functions to calculate current number of
masked bits for pointer masking
target/riscv: Add pointer masking tb flags
target/riscv: Update address modify functions to take into account
pointer masking
target/riscv: Enable updates for pointer masking variables and thus
enable pointer masking extension
target/riscv/cpu.c | 21 +--
target/riscv/cpu.h | 46 +++--
target/riscv/cpu_bits.h | 90 +---------
target/riscv/cpu_cfg.h | 3 +
target/riscv/cpu_helper.c | 97 +++++-----
target/riscv/csr.c | 337 ++---------------------------------
target/riscv/machine.c | 20 +--
target/riscv/pmp.c | 13 +-
target/riscv/pmp.h | 11 +-
target/riscv/tcg/tcg-cpu.c | 5 +-
target/riscv/translate.c | 46 ++---
target/riscv/vector_helper.c | 15 +-
12 files changed, 158 insertions(+), 546 deletions(-)
--
2.34.1
next reply other threads:[~2024-05-11 10:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-11 10:10 Alexey Baturo [this message]
2024-05-11 10:10 ` [PATCH v9 1/6] target/riscv: Remove obsolete pointer masking extension code Alexey Baturo
2024-05-11 10:10 ` [PATCH v9 2/6] target/riscv: Add new CSR fields for S{sn, mn, m}pm extensions as part of Zjpm v0.8 Alexey Baturo
2024-05-11 14:16 ` liwei
2024-05-13 11:29 ` Alistair Francis
2024-05-11 10:10 ` [PATCH v9 3/6] target/riscv: Add helper functions to calculate current number of masked bits for pointer masking Alexey Baturo
2024-05-13 12:11 ` LIU Zhiwei
2024-05-13 12:35 ` LIU Zhiwei
2024-05-13 12:39 ` LIU Zhiwei
2024-05-11 10:10 ` [PATCH v9 4/6] target/riscv: Add pointer masking tb flags Alexey Baturo
2024-05-13 12:13 ` LIU Zhiwei
2024-05-11 10:10 ` [PATCH v9 5/6] target/riscv: Update address modify functions to take into account pointer masking Alexey Baturo
2024-05-13 12:46 ` LIU Zhiwei
2024-05-11 10:10 ` [PATCH v9 6/6] target/riscv: Enable updates for pointer masking variables and thus enable pointer masking extension Alexey Baturo
2024-05-13 12:48 ` LIU Zhiwei
2024-05-11 13:56 ` [PATCH v9 0/6] Pointer Masking update for Zjpm v1.0 liwei
2024-05-13 10:24 ` Alistair Francis
2024-05-13 11:05 ` Alexey Baturo
2024-05-13 11:14 ` Alistair Francis
2024-05-13 11:32 ` Alistair Francis
2024-05-14 16:08 ` Alexey Baturo
2024-05-13 12:50 ` LIU Zhiwei
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