linux-kernel - Re: [PATCH v17 17/35] gunyah: rsc

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Message-ID: <20240314140210.GU440762@quicinc.com>
Date: Thu, 14 Mar 2024 19:32:10 +0530
From: Srivatsa Vaddagiri <quic_svaddagi@...cinc.com>
To: Elliot Berman <quic_eberman@...cinc.com>
CC: Alex Elder <elder@...aro.org>,
        Srinivas Kandagatla
	<srinivas.kandagatla@...aro.org>,
        Murali Nalajal <quic_mnalajal@...cinc.com>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        Carl van Schaik
	<quic_cvanscha@...cinc.com>,
        Philip Derrin <quic_pderrin@...cinc.com>,
        Prakruthi Deepak Heragu <quic_pheragu@...cinc.com>,
        Jonathan Corbet
	<corbet@....net>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Bjorn Andersson
	<andersson@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        "Fuad
 Tabba" <tabba@...gle.com>,
        Sean Christopherson <seanjc@...gle.com>,
        "Andrew
 Morton" <akpm@...ux-foundation.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-mm@...ck.org>
Subject: Re: [PATCH v17 17/35] gunyah: rsc_mgr: Add memory parcel RPC

* Elliot Berman <quic_eberman@...cinc.com> [2024-02-22 15:16:40]:

> In a Gunyah hypervisor system using the Gunyah Resource Manager, the
> "standard" unit of donating, lending and sharing memory is called a
> memory parcel (memparcel).  A memparcel is an abstraction used by the
> resource manager for securely managing donating, lending and sharing
> memory, which may be physically and virtually fragmented, without
> dealing directly with physical memory addresses.
> 
> Memparcels are created and managed through the RM RPC functions for
> lending, sharing and reclaiming memory from VMs.
> 
> When creating a new VM the initial VM memory containing the VM image and
> the VM's device tree blob must be provided as a memparcel. The memparcel
> must be created using the RM RPC for lending and mapping the memory to
> the VM.
> 
> Signed-off-by: Elliot Berman <quic_eberman@...cinc.com>

Reviewed-by: Srivatsa Vaddagiri <quic_svaddagi@...cinc.com>

- vatsa