linux-kernel - Re: [PATCH v5 0/5] Add support running nested Microsoft Hypervisor

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Message-ID: <1f96d38f-adc0-8233-bb95-4937d196ac8d@linux.microsoft.com>
Date:   Thu, 24 Nov 2022 11:31:35 +0530
From:   Jinank Jain <jinankjain@...ux.microsoft.com>
To:     jinankjain@...rosoft.com
Cc:     kys@...rosoft.com, haiyangz@...rosoft.com, wei.liu@...nel.org,
        decui@...rosoft.com, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, dave.hansen@...ux.intel.com, x86@...nel.org,
        hpa@...or.com, arnd@...db.de, peterz@...radead.org,
        jpoimboe@...nel.org, seanjc@...gle.com,
        kirill.shutemov@...ux.intel.com, ak@...ux.intel.com,
        sathyanarayanan.kuppuswamy@...ux.intel.com,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arch@...r.kernel.org, anrayabh@...ux.microsoft.com,
        mikelley@...rosoft.com
Subject: Re: [PATCH v5 0/5] Add support running nested Microsoft Hypervisor

Please ignore the v5 patch series I posted the wrong set of patches.

Regards,

Jinank

On 11/24/2022 11:23 AM, Jinank Jain wrote:
> This patch series plans to add support for running nested Microsoft
> Hypervisor. In case of nested Microsoft Hypervisor there are few
> privileged hypercalls which need to go L0 Hypervisor instead of L1
> Hypervisor. This patches series basically identifies such hypercalls and
> replace them with nested hypercalls.
>
> Jinank Jain (5):
>    x86/hyperv: Add support for detecting nested hypervisor
>    Drivers: hv: Setup synic registers in case of nested root partition
>    x86/hyperv: Add an interface to do nested hypercalls
>    Drivers: hv: Enable vmbus driver for nested root partition
>    x86/hyperv: Change interrupt vector for nested root partition
>
> [v4]
> - Fix ARM64 compilation
>
> [v5]
> - Fix comments from Michael Kelly
>
>   arch/arm64/hyperv/mshyperv.c       |  6 +++
>   arch/x86/include/asm/hyperv-tlfs.h | 17 ++++++-
>   arch/x86/include/asm/idtentry.h    |  2 +
>   arch/x86/include/asm/irq_vectors.h |  6 +++
>   arch/x86/include/asm/mshyperv.h    | 68 ++++++++++++++++------------
>   arch/x86/kernel/cpu/mshyperv.c     | 71 ++++++++++++++++++++++++++++++
>   arch/x86/kernel/idt.c              |  9 ++++
>   drivers/hv/hv.c                    | 18 +++++---
>   drivers/hv/hv_common.c             |  7 ++-
>   drivers/hv/vmbus_drv.c             |  5 ++-
>   include/asm-generic/hyperv-tlfs.h  |  1 +
>   include/asm-generic/mshyperv.h     |  1 +
>   12 files changed, 173 insertions(+), 38 deletions(-)
>