Re: [PATCH 06/13] HV: Add ghcb hvcall support for SNP VM

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To: Joerg Roedel <joro@xxxxxxxxxx>
Subject: Re: [PATCH 06/13] HV: Add ghcb hvcall support for SNP VM
From: Tianyu Lan <ltykernel@xxxxxxxxx>
Date: Mon, 2 Aug 2021 21:32:33 +0800
Cc: kys@xxxxxxxxxxxxx, haiyangz@xxxxxxxxxxxxx, sthemmin@xxxxxxxxxxxxx, wei.liu@xxxxxxxxxx, decui@xxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, mingo@xxxxxxxxxx, bp@xxxxxxxxx, x86@xxxxxxxxxx, hpa@xxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, luto@xxxxxxxxxx, peterz@xxxxxxxxxxxxx, konrad.wilk@xxxxxxxxxx, boris.ostrovsky@xxxxxxxxxx, jgross@xxxxxxxx, sstabellini@xxxxxxxxxx, will@xxxxxxxxxx, davem@xxxxxxxxxxxxx, kuba@xxxxxxxxxx, jejb@xxxxxxxxxxxxx, martin.petersen@xxxxxxxxxx, arnd@xxxxxxxx, hch@xxxxxx, m.szyprowski@xxxxxxxxxxx, robin.murphy@xxxxxxx, thomas.lendacky@xxxxxxx, brijesh.singh@xxxxxxx, ardb@xxxxxxxxxx, Tianyu.Lan@xxxxxxxxxxxxx, rientjes@xxxxxxxxxx, martin.b.radev@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, rppt@xxxxxxxxxx, kirill.shutemov@xxxxxxxxxxxxxxx, aneesh.kumar@xxxxxxxxxxxxx, krish.sadhukhan@xxxxxxxxxx, saravanand@xxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, pgonda@xxxxxxxxxx, david@xxxxxxxxxx, keescook@xxxxxxxxxxxx, hannes@xxxxxxxxxxx, sfr@xxxxxxxxxxxxxxxx, michael.h.kelley@xxxxxxxxxxxxx, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-hyperv@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, vkuznets@xxxxxxxxxx, anparri@xxxxxxxxxxxxx
In-reply-to: <YQfnlBwyZUJyixQX@8bytes.org>
References: <20210728145232.285861-1-ltykernel@gmail.com> <20210728145232.285861-7-ltykernel@gmail.com> <YQfnlBwyZUJyixQX@8bytes.org>
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On 8/2/2021 8:39 PM, Joerg Roedel wrote:

On Wed, Jul 28, 2021 at 10:52:21AM -0400, Tianyu Lan wrote:

+	hv_ghcb->ghcb.protocol_version = 1;
+	hv_ghcb->ghcb.ghcb_usage = 1;


The values set to ghcb_usage deserve some defines (here and below).


OK. Will update in the next version.

References:
- [PATCH 00/13] x86/Hyper-V: Add Hyper-V Isolation VM support
  - From: Tianyu Lan
- [PATCH 06/13] HV: Add ghcb hvcall support for SNP VM
  - From: Tianyu Lan
- Re: [PATCH 06/13] HV: Add ghcb hvcall support for SNP VM
  - From: Joerg Roedel

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