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Re: [PATCH V3 05/13] HV: Add Write/Read MSR registers via ghcb page
- To: Tianyu Lan <ltykernel@xxxxxxxxx>
- From: Christoph Hellwig <hch@xxxxxx>
- Date: Tue, 24 Aug 2021 10:45:27 +0200
- 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, joro@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, pgonda@xxxxxxxxxx, martin.b.radev@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, kirill.shutemov@xxxxxxxxxxxxxxx, rppt@xxxxxxxxxx, sfr@xxxxxxxxxxxxxxxx, saravanand@xxxxxx, krish.sadhukhan@xxxxxxxxxx, aneesh.kumar@xxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, rientjes@xxxxxxxxxx, hannes@xxxxxxxxxxx, tj@xxxxxxxxxx, michael.h.kelley@xxxxxxxxxxxxx, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-hyperv@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, vkuznets@xxxxxxxxxx, parri.andrea@xxxxxxxxx, dave.hansen@xxxxxxxxx
- Delivery-date: Tue, 24 Aug 2021 08:45:51 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
This patch fails to compile when CONFIG_AMD_MEM_ENCRYPT is not enabled,
in which case there is sev_es_ghcb_hv_call_simple is not defined.
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