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Tue, 15 Sep 2020 20:16:42 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 4DBE3299BA20F; Tue, 15 Sep 2020 20:16:42 +0200 (CEST) Date: Tue, 15 Sep 2020 20:16:42 +0200 From: peterz@infradead.org To: Michal Suchanek Subject: Re: [PATCH] Revert "powerpc/64s: machine check interrupt update NMI accounting" Message-ID: <20200915181642.GF2674@hirez.programming.kicks-ass.net> References: <20200915084302.GG29778@kitsune.suse.cz> <20200915180659.12503-1-msuchanek@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200915180659.12503-1-msuchanek@suse.de> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Aneesh Kumar K.V" , Santosh Sivaraj , Alistair Popple , Greg Kroah-Hartman , Mahesh Salgaonkar , Nicholas Piggin , linux-kernel@vger.kernel.org, Jordan Niethe , Paul Mackerras , Ganesh Goudar , stable@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Mike Rapoport Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Tue, Sep 15, 2020 at 08:06:59PM +0200, Michal Suchanek wrote: > This reverts commit 116ac378bb3ff844df333e7609e7604651a0db9d. > > This commit causes the kernel to oops and reboot when injecting a SLB > multihit which causes a MCE. > > Before this commit a SLB multihit was corrected by the kernel and the > system continued to operate normally. > > cc: stable@vger.kernel.org > Fixes: 116ac378bb3f ("powerpc/64s: machine check interrupt update NMI accounting") > Signed-off-by: Michal Suchanek Ever since 69ea03b56ed2 ("hardirq/nmi: Allow nested nmi_enter()") nmi_enter() supports nesting natively.