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Tue, 09 Aug 2022 12:29:35 +0100 Date: Tue, 09 Aug 2022 12:29:34 +0100 Message-ID: <87zggdven5.wl-maz@kernel.org> From: Marc Zyngier To: Elliot Berman Cc: Dmitry Baryshkov , Bjorn Andersson , Murali Nalajala , Trilok Soni , Srivatsa Vaddagiri , Carl van Schaik , Andy Gross , , Lorenzo Pieralisi , Sudeep Holla , Rob Herring , "Krzysztof\ Kozlowski" , Jonathan Corbet , Will Deacon , Catalin Marinas , , , Subject: Re: [PATCH v2 07/11] gunyah: msgq: Add Gunyah message queues In-Reply-To: <6fa6c86d-5b4c-4048-2df8-49a36c86e7d6@quicinc.com> References: <20220801211240.597859-1-quic_eberman@quicinc.com> <20220801211240.597859-8-quic_eberman@quicinc.com> <250945d2-3940-9830-63e5-beec5f44010b@linaro.org> <6fa6c86d-5b4c-4048-2df8-49a36c86e7d6@quicinc.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: quic_eberman@quicinc.com, dmitry.baryshkov@linaro.org, bjorn.andersson@linaro.org, quic_mnalajal@quicinc.com, quic_tsoni@quicinc.com, quic_svaddagi@quicinc.com, quic_cvanscha@quicinc.com, agross@kernel.org, linux-arm-kernel@lists.infradead.org, lorenzo.pieralisi@arm.com, sudeep.holla@arm.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, corbet@lwn.net, will@kernel.org, catalin.marinas@arm.com, devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-arm-msm@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220809_042941_509616_813D8333 X-CRM114-Status: GOOD ( 16.90 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 08 Aug 2022 23:22:48 +0100, Elliot Berman wrote: > > In a future series, I'll add the support to load other virtual > machines. When running other virtual machines, additional gunyah > devices are needed for doorbells (e.g. to emulate interrupts for > paravirtualized devices) and to represent the vCPUs of that other > VM. Other gunyah devices are also possible, but those are the > immediate devices coming over the horizon. Can you elaborate on this "doorbell" aspect? If you signal interrupts to guests, they should be signalled as actual interrupts, not as some hypervisor-specific events, as we rely on the interrupt semantics for most things. Or are you talking about injecting an interrupt from a guest into another, the doorbell representing an interrupt source? Thanks, M. -- Without deviation from the norm, progress is not possible. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel