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From:   Will Deacon <will@kernel.org>
To:     Daniel Thompson <daniel.thompson@linaro.org>,
        Catalin Marinas <catalin.marinas@arm.com>
Cc:     Will Deacon <will@kernel.org>, linux-kernel@vger.kernel.org,
        patches@linaro.org, Douglas Anderson <dianders@chromium.org>,
        linux-arm-kernel@lists.infradead.org,
        Jason Wessel <jason.wessel@windriver.com>
Subject: Re: [PATCH v2] arm64: cacheflush: Fix KGDB trap detection
Date:   Tue,  5 May 2020 17:13:45 +0100
Message-Id: <158869137087.244424.4260224460496540281.b4-ty@kernel.org>
In-Reply-To: <20200504170518.2959478-1-daniel.thompson@linaro.org>
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On Mon, 4 May 2020 18:05:18 +0100, Daniel Thompson wrote:
> flush_icache_range() contains a bodge to avoid issuing IPIs when the kgdb
> trap handler is running because issuing IPIs is unsafe (and not needed)
> in this execution context. However the current test, based on
> kgdb_connected is flawed: it both over-matches and under-matches.
> 
> The over match occurs because kgdb_connected is set when gdb attaches
> to the stub and remains set during normal running. This is relatively
> harmelss because in almost all cases irq_disabled() will be false.
> 
> [...]

Applied to arm64 (for-next/misc), thanks!

[1/1] arm64: cacheflush: Fix KGDB trap detection
      https://git.kernel.org/arm64/c/ab8ad279ceac

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev