linux-kernel - Re: [PATCH v17 16/35] gunyah: Add hypercalls for demand paging

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Message-ID: <20240313153503.GR440762@quicinc.com>
Date: Wed, 13 Mar 2024 21:05:03 +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
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        Philip Derrin <quic_pderrin@...cinc.com>,
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        Jonathan Corbet
	<corbet@....net>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>,
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        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
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        Bjorn Andersson
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        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>,
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Subject: Re: [PATCH v17 16/35] gunyah: Add hypercalls for demand paging

* Elliot Berman <quic_eberman@...cinc.com> [2024-02-22 15:16:39]:

> Three hypercalls are needed to support demand paging.
> In create page mappings for a virtual machine's address space, memory
> must be moved to a memory extent that is allowed to be mapped into that
> address space. Memory extents are Gunyah's implementation of access
> control. Once the memory is moved to the proper memory extent, the
> memory can be mapped into the VM's address space. Implement the
> bindings to perform those hypercalls.
> 
> Signed-off-by: Elliot Berman <quic_eberman@...cinc.com>

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