Re: [PATCH v4 00/10] riscv: Add Zalasr ISA extension support

[路旭]

Hi Paul,

I will continue with this work. And thanks for Andrea's feedback.

Best Regards,
Xu Lu

> From: "Paul Walmsley"<pjw@xxxxxxxxxx>
> Date:  Wed, Nov 19, 2025, 23:42
> Subject:  Re: [PATCH v4 00/10] riscv: Add Zalasr ISA extension support
> To: <patchwork-bot+linux-riscv@xxxxxxxxxx>
> Cc: "Xu Lu"<luxu.kernel@xxxxxxxxxxxxx>, <linux-riscv@xxxxxxxxxxxxxxxxxxx>, <corbet@xxxxxxx>, <paul.walmsley@xxxxxxxxxx>, <palmer@xxxxxxxxxxx>, <aou@xxxxxxxxxxxxxxxxx>, <alex@xxxxxxxx>, <robh@xxxxxxxxxx>, <krzk+dt@xxxxxxxxxx>, <conor+dt@xxxxxxxxxx>, <will@xxxxxxxxxx>, <peterz@xxxxxxxxxxxxx>, <boqun.feng@xxxxxxxxx>, <mark.rutland@xxxxxxx>, <anup@xxxxxxxxxxxxxx>, <atish.patra@xxxxxxxxx>, <pbonzini@xxxxxxxxxx>, <shuah@xxxxxxxxxx>, <parri.andrea@xxxxxxxxx>, <ajones@xxxxxxxxxxxxxxxx>, <brs@xxxxxxxxxxxx>, <guoren@xxxxxxxxxx>, <linux-doc@xxxxxxxxxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx>, <devicetree@xxxxxxxxxxxxxxx>, <kvm@xxxxxxxxxxxxxxx>, <kvm-riscv@xxxxxxxxxxxxxxxxxxx>, <linux-kselftest@xxxxxxxxxxxxxxx>, <apw@xxxxxxxxxxxxx>, <joe@xxxxxxxxxxx>, <lukas.bulwahn@xxxxxxxxx>
> Folks,

> 
> On Wed, 19 Nov 2025, patchwork-bot+linux-riscv@xxxxxxxxxx wrote:

> 
> > This series was applied to riscv/linux.git (for-next)

> > by Paul Walmsley <pjw@xxxxxxxxxx>:

> 
> This actually isn't true; I've only applied the first four patches (see 

> below).

> 
> > On Mon, 20 Oct 2025 12:20:46 +0800 you wrote:

> > > This patch adds support for the Zalasr ISA extension, which supplies the

> > > real load acquire/store release instructions.

> > > 

> > > The specification can be found here:

> > > https://github.com/riscv/riscv-zalasr/blob/main/chapter2.adoc

> > > 

> > > This patch seires has been tested with ltp on Qemu with Brensan's zalasr

> > > support patch[1].

> > > 

> > > [...]

> > 

> > Here is the summary with links:

> >   - [v4,01/10] riscv: Add ISA extension parsing for Zalasr

> >     https://git.kernel.org/riscv/c/0597b9c8627e

> >   - [v4,02/10] dt-bindings: riscv: Add Zalasr ISA extension description

> >     https://git.kernel.org/riscv/c/6e2a0ff70abe

> >   - [v4,03/10] riscv: hwprobe: Export Zalasr extension

> >     https://git.kernel.org/riscv/c/d5e20628a882

> >   - [v4,04/10] riscv: Introduce Zalasr instructions

> >     https://git.kernel.org/riscv/c/c4139ea6717c

> >   - [v4,05/10] riscv: Apply Zalasr to smp_load_acquire/smp_store_release

> >     (no matching commit)

> >   - [v4,06/10] riscv: Apply acquire/release semantics to arch_xchg/arch_cmpxchg operations

> >     (no matching commit)

> >   - [v4,07/10] riscv: Apply acquire/release semantics to arch_atomic operations

> >     (no matching commit)

> >   - [v4,08/10] riscv: Remove arch specific __atomic_acquire/release_fence

> >     (no matching commit)

> >   - [v4,09/10] RISC-V: KVM: Allow Zalasr extensions for Guest/VM

> >     (no matching commit)

> >   - [v4,10/10] RISC-V: KVM: selftests: Add Zalasr extensions to get-reg-list test

> >     (no matching commit)

> 
> In terms of patches 5-8, we're still waiting for Xu Lu to update the 

> patches based on Andrea's feedback.  Xu Lu, are you still planning to 

> update these?

> 
> 
> - Paul
>