linux-kernel - Re: [PATCH v8 0/5] riscv: add support for SBI Supervisor Software Events

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Message-ID: <350edd01-56ce-6558-1473-4b9231647e1e@kernel.org>
Date: Wed, 19 Nov 2025 08:52:16 -0700 (MST)
From: Paul Walmsley <pjw@...nel.org>
To: patchwork-bot+linux-riscv@...nel.org
cc: Clément Léger <cleger@...osinc.com>, 
    linux-riscv@...ts.infradead.org, paul.walmsley@...ive.com, 
    palmer@...belt.com, linux-kernel@...r.kernel.org, 
    linux-arm-kernel@...ts.infradead.org, hchauhan@...tanamicro.com, 
    apatel@...tanamicro.com, luxu.kernel@...edance.com, atishp@...shpatra.org, 
    bjorn@...osinc.com, cuiyunhui@...edance.com
Subject: Re: [PATCH v8 0/5] riscv: add support for SBI Supervisor Software
 Events


To add more context:

On Wed, 19 Nov 2025, patchwork-bot+linux-riscv@...nel.org wrote:

> This series was applied to riscv/linux.git (for-next)
> by Paul Walmsley <pjw@...nel.org>:
> 
> On Wed,  5 Nov 2025 08:26:32 +0000 you wrote:
> > The SBI Supervisor Software Events (SSE) extensions provides a mechanism
> > to inject software events from an SBI implementation to supervisor
> > software such that it preempts all other supervisor level traps and
> > interrupts. This extension is introduced by the SBI v3.0 specification[1].
> > 
> > Various events are defined and can be send asynchronously to supervisor
> > software (RAS, PMU, DEBUG, Asynchronous page fault) from SBI as well
> > as platform specific events. Events can be either local (per-hart) or
> > global. Events can be nested on top of each other based on priority and
> > can interrupt the kernel at any time.
> > 
> > [...]
> 
> Here is the summary with links:
>   - [v8,1/5] riscv: add SBI SSE extension definitions
>     https://git.kernel.org/riscv/c/7bba38249b8a
>   - [v8,2/5] riscv: add support for SBI Supervisor Software Events extension
>     https://git.kernel.org/riscv/c/b52179e6de7d
>   - [v8,3/5] drivers: firmware: add riscv SSE support
>     https://git.kernel.org/riscv/c/5ffe60d26107
>   - [v8,4/5] perf: RISC-V: add support for SSE event
>     https://git.kernel.org/riscv/c/c6f3f04d2a9c
>   - [v8,5/5] selftests/riscv: add SSE test module
>     https://git.kernel.org/riscv/c/a123316660af

This is a pretty sophisticated series.  I was hoping to get more test 
reports on it and reviews (as Clément requested as well). In the meantime 
I've pulled them into for-next in the hopes that it might increase the 
number of potential testers.  Am still very much interested in any test 
reports or additional reviews; if they come in this week, I'll consider 
rebuilding for-next to add them.


- Paul