linux-kernel - Re: [PATCH v8 1/6] arm64: hyperv: Add Hyper-V hypercall and register access utilities

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Date:   Mon, 22 Feb 2021 10:20:54 +0000
From:   Wei Liu <wei.liu@...nel.org>
To:     Michael Kelley <mikelley@...rosoft.com>
Cc:     will@...nel.org, catalin.marinas@....com, mark.rutland@....com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-hyperv@...r.kernel.org, linux-efi@...r.kernel.org,
        arnd@...db.de, wei.liu@...nel.org, ardb@...nel.org,
        daniel.lezcano@...aro.org, kys@...rosoft.com
Subject: Re: [PATCH v8 1/6] arm64: hyperv: Add Hyper-V hypercall and register
 access utilities

On Thu, Feb 18, 2021 at 03:16:29PM -0800, Michael Kelley wrote:
> hyperv-tlfs.h defines Hyper-V interfaces from the Hyper-V Top Level
> Functional Spec (TLFS), and #includes the architecture-independent
> part of hyperv-tlfs.h in include/asm-generic.  The published TLFS
> is distinctly oriented to x86/x64, so the ARM64-specific
> hyperv-tlfs.h includes information for ARM64 that is not yet formally
> published. The TLFS is available here:
> 
>   docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/reference/tlfs
> 
> mshyperv.h defines Linux-specific structures and routines for
> interacting with Hyper-V on ARM64, and #includes the architecture-
> independent part of mshyperv.h in include/asm-generic.
> 
> Use these definitions to provide utility functions to make
> Hyper-V hypercalls and to get and set Hyper-V provided
> registers associated with a virtual processor.
> 
> Signed-off-by: Michael Kelley <mikelley@...rosoft.com>

Reviewed-by: Wei Liu <wei.liu@...nel.org>