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Subject: Re: [PATCH v3 0/5] Add support running nested Microsoft Hypervisor
To:     Wei Liu <wei.liu@kernel.org>
Cc:     jinankjain@microsoft.com, kys@microsoft.com,
        haiyangz@microsoft.com, decui@microsoft.com, tglx@linutronix.de,
        mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
        x86@kernel.org, hpa@zytor.com, arnd@arndb.de, peterz@infradead.org,
        jpoimboe@kernel.org, seanjc@google.com,
        kirill.shutemov@linux.intel.com, ak@linux.intel.com,
        sathyanarayanan.kuppuswamy@linux.intel.com,
        linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arch@vger.kernel.org, anrayabh@linux.microsoft.com,
        mikelley@microsoft.com
References: <https://lore.kernel.org/linux-hyperv/cover.1667406350.git.jinankjain@linux.microsoft.com/T/#t>
 <cover.1667480257.git.jinankjain@linux.microsoft.com>
 <Y3TTt/mOe3pzDLZn@liuwe-devbox-debian-v2>
From:   Jinank Jain <jinankjain@linux.microsoft.com>
Message-ID: <24f4cef8-3e87-4303-9fb3-0011339fdceb@linux.microsoft.com>
Date:   Thu, 17 Nov 2022 09:34:21 +0530
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On 11/16/2022 5:42 PM, Wei Liu wrote:
> On Thu, Nov 03, 2022 at 01:04:02PM +0000, 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
> I see `__weak hv_nested` in this patch.
>
> I guess this version has fixed ARM64 build?

It is fixed in v4 of the patch series.

Regards,

Jinank


>
>>    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
>>
>>   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     | 22 ++++++++++
>>   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 +
>>   10 files changed, 141 insertions(+), 14 deletions(-)
>>
>> -- 
>> 2.25.1
>>