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Message-Id: <169116693391.147594.8584700236925488135.b4-ty@kernel.org>
Date: Fri, 4 Aug 2023 19:10:15 +0100
From: Will Deacon <will@...nel.org>
To: D Scott Phillips <scott@...amperecomputing.com>,
linux-arm-kernel@...ts.infradead.org,
James Morse <james.morse@....com>
Cc: catalin.marinas@....com, kernel-team@...roid.com,
Will Deacon <will@...nel.org>,
Darren Hart <darren@...amperecomputing.com>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6] arm64: sdei: abort running SDEI handlers during crash
On Mon, 26 Jun 2023 17:29:39 -0700, D Scott Phillips wrote:
> Interrupts are blocked in SDEI context, per the SDEI spec: "The client
> interrupts cannot preempt the event handler." If we crashed in the SDEI
> handler-running context (as with ACPI's AGDI) then we need to clean up the
> SDEI state before proceeding to the crash kernel so that the crash kernel
> can have working interrupts.
>
> Track the active SDEI handler per-cpu so that we can COMPLETE_AND_RESUME
> the handler, discarding the interrupted context.
>
> [...]
Applied to arm64 (for-next/misc), thanks!
[1/1] arm64: sdei: abort running SDEI handlers during crash
https://git.kernel.org/arm64/c/5cd474e57368
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
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