Message-ID: <17278603-4328-3753-cae9-eb10ce69db7a@gmail.com>
Date:   Sat, 18 Feb 2023 15:15:58 +0800
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Subject: Re: [RFC PATCH V3 00/16] x86/hyperv/sev: Add AMD sev-snp enlightened
 guest support on hyperv
To:     "Gupta, Pankaj" <pankaj.gupta@amd.com>, luto@kernel.org,
        tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
        dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com,
        seanjc@google.com, pbonzini@redhat.com, jgross@suse.com,
        tiala@microsoft.com, kirill@shutemov.name,
        jiangshan.ljs@antgroup.com, peterz@infradead.org,
        ashish.kalra@amd.com, srutherford@google.com,
        akpm@linux-foundation.org, anshuman.khandual@arm.com,
        pawan.kumar.gupta@linux.intel.com, adrian.hunter@intel.com,
        daniel.sneddon@linux.intel.com, alexander.shishkin@linux.intel.com,
        sandipan.das@amd.com, ray.huang@amd.com, brijesh.singh@amd.com,
        michael.roth@amd.com, thomas.lendacky@amd.com,
        venu.busireddy@oracle.com, sterritt@google.com,
        tony.luck@intel.com, samitolvanen@google.com, fenghua.yu@intel.com
Cc:     linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
        linux-hyperv@vger.kernel.org, linux-arch@vger.kernel.org
References: <20230122024607.788454-1-ltykernel@gmail.com>
 <fac62414-06f9-0454-8393-f039aa30571a@amd.com>
 <fe100597-26be-23e4-bfa9-f45aa27b7966@amd.com>
From:   Tianyu Lan <ltykernel@gmail.com>
In-Reply-To: <fe100597-26be-23e4-bfa9-f45aa27b7966@amd.com>
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Precedence: bulk

On 2/17/2023 8:47 PM, Gupta, Pankaj wrote:
> On 2/9/2023 12:36 PM, Gupta, Pankaj wrote:
>> Hi Tianyu,
>>
>>> This patchset is to add AMD sev-snp enlightened guest
>>> support on hyperv. Hyperv uses Linux direct boot mode
>>> to boot up Linux kernel and so it needs to pvalidate
>>> system memory by itself.
>>>
>>> In hyperv case, there is no boot loader and so cc blob
>>> is prepared by hypervisor. In this series, hypervisor
>>> set the cc blob address directly into boot parameter
>>> of Linux kernel. If the magic number on cc blob address
>>> is valid, kernel will read cc blob.
>>>
>>> Shared memory between guests and hypervisor should be
>>> decrypted and zero memory after decrypt memory. The data
>>> in the target address. It maybe smearedto avoid smearing
>>> data.
>>>
>>> Introduce #HV exception support in AMD sev snp code and
>>> #HV handler.
>>
>> I am interested to test the Linux guest #HV exception handling 
>> (patches 12-16 in this series) for the restricted interrupt injection 
>> with the Linux/KVM host.
>>
>> Do you have a git tree which or any base commit on which
>> I can use to apply these patches?
> 
> Never mind. I could apply the patches 12-16 on master (except minor 
> tweak in patch 14). Now, will try to test.
> 

Hi Pankaj:
	Sorry. I missed your first mail. Please let me know any issue son KVM 
side if available。Thanks in advance.