linux-kernel - RE: [PATCH v7 0/8] x86/hyperv: Add AMD sev-snp enlightened guest support on hyperv

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Message-ID: <SA1PR21MB13353ED36ADAA84F13F40543BF1CA@SA1PR21MB1335.namprd21.prod.outlook.com>
Date:   Wed, 23 Aug 2023 03:08:53 +0000
From:   Dexuan Cui <decui@...rosoft.com>
To:     Tom Lendacky <thomas.lendacky@....com>,
        Wei Liu <wei.liu@...nel.org>, Tianyu Lan <ltykernel@...il.com>
CC:     KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "x86@...nel.org" <x86@...nel.org>, "hpa@...or.com" <hpa@...or.com>,
        "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
        "arnd@...db.de" <arnd@...db.de>,
        "Michael Kelley (LINUX)" <mikelley@...rosoft.com>,
        Tianyu Lan <Tianyu.Lan@...rosoft.com>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        vkuznets <vkuznets@...hat.com>
Subject: RE: [PATCH v7 0/8] x86/hyperv: Add AMD sev-snp enlightened guest
 support on hyperv

> From: Tom Lendacky <thomas.lendacky@....com>
> Sent: Tuesday, August 22, 2023 12:38 PM
> To: Wei Liu <wei.liu@...nel.org>; Tianyu Lan <ltykernel@...il.com>
>  [...]
> Just found that this series fails to build if CONFIG_HYPERV is not set:
> 
> ld: arch/x86/kernel/cpu/mshyperv.o: in function `ms_hyperv_init_platform':
> /root/kernels/linux-next-build-x86_64/arch/x86/kernel/cpu/mshyperv.c:417:
> undefined reference to `isolation_type_en_snp'

I made a fix:
https://github.com/dcui/linux/commit/29fadabcaa2cb3466ace1dff13b4d948a71f888d

I'll post the fix immediately.