Add support arena atomics for RV64 #9329
Open
+214
−389
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
![kernel-patches-daemon-bpf[bot]](https://avatars.githubusercontent.com/u/70728002?s=60&v=4){kind=small}
|
Upstream branch: 42be23e |
|
Upstream branch: 42be23e |
kernel-patches-daemon-bpf
bot
force-pushed
the
series/983958=>bpf-next
branch
from
545d750 to
6a566e4
Compare
kernel-patches-daemon-bpf
bot
force-pushed
the
bpf-next_base
branch
from
ffefc6d to
4ccf98a
Compare
|
Upstream branch: 42be23e |
kernel-patches-daemon-bpf
bot
force-pushed
the
series/983958=>bpf-next
branch
from
6a566e4 to
b6f1602
Compare
kernel-patches-daemon-bpf
bot
force-pushed
the
bpf-next_base
branch
from
4ccf98a to
95edab2
Compare
added 7 commits
July 21, 2025 17:38
There's a lot of redundant code related to store from register operations, let's extract emit_stx() to make code more compact. Signed-off-by: Pu Lehui <pulehui@huawei.com>
There's a lot of redundant code related to store from immediate operations, let's extract emit_st() to make code more compact. Signed-off-by: Pu Lehui <pulehui@huawei.com>
There's a lot of redundant code related to load into register operations, let's extract emit_ldx() to make code more compact. Signed-off-by: Pu Lehui <pulehui@huawei.com>
RV64 bpf is going to support ZACAS instructions. Let's separate toolchain support dependency from RISCV_ISA_ZACAS. Signed-off-by: Pu Lehui <pulehui@huawei.com>
Add rv_ext_enabled macro to check whether the runtime detection extension is enabled. Signed-off-by: Pu Lehui <pulehui@huawei.com>
Add Zacas instructions introduced by [0] to reduce code size and improve performance of RV64 JIT. Link: https://github.com/riscvarchive/riscv-zacas/releases/download/v1.0/riscv-zacas.pdf [0] Signed-off-by: Pu Lehui <pulehui@huawei.com>
Optimize cmpxchg instruction with amocas.w and amocas.d Zacas instructions. Signed-off-by: Pu Lehui <pulehui@huawei.com>
|
Upstream branch: 95993dc |
added 3 commits
July 21, 2025 17:38
Add ex_insn_off and ex_jmp_off fields to struct rv_jit_context so that add_exception_handler() does not need to be immediately followed by the instruction to add the exception table. ex_insn_off indicates the offset of the instruction to add the exception table, and ex_jmp_off indicates the offset to jump over the faulting instruction. This is to prepare for adding the exception table to atomic instructions later, because some atomic instructions need to perform zext or other operations. Signed-off-by: Pu Lehui <pulehui@huawei.com>
Add arena atomics support for RMW atomics and load-acquire and store-release instructions. Non-Zacas cmpxchg is implemented via loop, which is not currently supported because it requires more complex extable and loop logic. Signed-off-by: Pu Lehui <pulehui@huawei.com>
Enable arena atomics tests for RV64. Signed-off-by: Pu Lehui <pulehui@huawei.com>
kernel-patches-daemon-bpf
bot
force-pushed
the
series/983958=>bpf-next
branch
from
b6f1602 to
bc2eece
Compare
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Pull request for series with
subject: Add support arena atomics for RV64
version: 1
url: https://patchwork.kernel.org/project/netdevbpf/list/?series=983958