From: Nicholas Piggin <npiggin@gmail.com>
To: Anup Patel <anup@brainfault.org>
Cc: Anup Patel <anup.patel@oss.qualcomm.com>,
Atish Patra <atish.patra@linux.dev>,
Andrew Jones <andrew.jones@oss.qualcomm.com>,
Samuel Holland <samuel.holland@sifive.com>,
opensbi@lists.infradead.org
Subject: Re: [PATCH 0/3] Timer events for OpenSBI
Date: Fri, 24 Apr 2026 13:56:33 +1000 [thread overview]
Message-ID: <aerny2qj9H9dJJ47@lima-default> (raw)
In-Reply-To: <CAAhSdy0n6mstxpuLaRM7hBo7JhhOSMdMR=wJsQW6+H8YR4PYww@mail.gmail.com>
On Thu, Apr 23, 2026 at 01:38:55PM +0530, Anup Patel wrote:
> On Thu, Apr 23, 2026 at 12:27 PM Nicholas Piggin <npiggin@gmail.com> wrote:
> >
> > On Wed, Apr 15, 2026 at 04:29:59PM +0530, Anup Patel wrote:
> > > This series extends the sbi_timer framework to support
> > > timer events usable from any part of OpenSBI. The platform
> > > drivers in OpenSBI can use timer events for timeouts or
> > > periodic checks.
> > >
> > > These patches can also be found in sbi_timer_imp_v1 branch
> > > at: https://github.com/avpatel/opensbi.git
> >
> > What is your m mode use case for these, I would be interested
> > in the context of reviewing it. Generally I thought it looks
> > good.
> >
>
> We have a RPMI watchdog proposal under development. This
> series will provide foundation for the PoC work of the RPMI
> watchdog proposal. Basically, the OpenSBI firmware can emulate
> RPMI watchdog over SBI MPXY channel for the supervisor software.
> This OpenSBI can provide a separate watchdog for each supervisor
> domain. In absence of HW watchdog for M-mode firmware, the PuC
> firmware can also implement RPMI watchdog over RPMI shared
> memory transport.
Oh nice, that's an important feature for HA. Good use of m mode
timers.
Thanks,
Nick
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prev parent reply other threads:[~2026-04-24 3:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-15 10:59 [PATCH 0/3] Timer events for OpenSBI Anup Patel
2026-04-15 11:00 ` [PATCH 1/3] include: sbi: Add sbi_scratch_hartindex() macro Anup Patel
2026-04-23 6:55 ` Nicholas Piggin
2026-04-15 11:00 ` [PATCH 2/3] lib: sbi_timer: Introduce per-HART timer state Anup Patel
2026-04-23 6:55 ` Nicholas Piggin
2026-04-15 11:00 ` [PATCH 3/3] lib: sbi_timer: Add support for timer events Anup Patel
2026-04-23 6:54 ` Nicholas Piggin
2026-04-23 8:25 ` Anup Patel
2026-04-24 1:09 ` Nicholas Piggin
2026-04-23 6:57 ` [PATCH 0/3] Timer events for OpenSBI Nicholas Piggin
2026-04-23 8:08 ` Anup Patel
2026-04-24 3:56 ` Nicholas Piggin [this message]
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