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Date: Tue, 10 Aug 2021 10:56:09 +0000 From: Wei Liu <wei.liu@...nel.org> To: Tianyu Lan <ltykernel@...il.com> Cc: kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com, wei.liu@...nel.org, decui@...rosoft.com, tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, x86@...nel.org, hpa@...or.com, dave.hansen@...ux.intel.com, luto@...nel.org, peterz@...radead.org, konrad.wilk@...cle.com, boris.ostrovsky@...cle.com, jgross@...e.com, sstabellini@...nel.org, joro@...tes.org, will@...nel.org, davem@...emloft.net, kuba@...nel.org, jejb@...ux.ibm.com, martin.petersen@...cle.com, arnd@...db.de, hch@....de, m.szyprowski@...sung.com, robin.murphy@....com, thomas.lendacky@....com, brijesh.singh@....com, ardb@...nel.org, Tianyu.Lan@...rosoft.com, pgonda@...gle.com, martin.b.radev@...il.com, akpm@...ux-foundation.org, kirill.shutemov@...ux.intel.com, rppt@...nel.org, sfr@...b.auug.org.au, saravanand@...com, krish.sadhukhan@...cle.com, aneesh.kumar@...ux.ibm.com, xen-devel@...ts.xenproject.org, rientjes@...gle.com, hannes@...xchg.org, tj@...nel.org, michael.h.kelley@...rosoft.com, iommu@...ts.linux-foundation.org, linux-arch@...r.kernel.org, linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org, netdev@...r.kernel.org, vkuznets@...hat.com, parri.andrea@...il.com, dave.hansen@...el.com Subject: Re: [PATCH V3 01/13] x86/HV: Initialize GHCB page in Isolation VM On Mon, Aug 09, 2021 at 01:56:05PM -0400, Tianyu Lan wrote: [...] > static int hv_cpu_init(unsigned int cpu) > { > union hv_vp_assist_msr_contents msr = { 0 }; > @@ -85,6 +111,8 @@ static int hv_cpu_init(unsigned int cpu) > } > } > > + hyperv_init_ghcb(); > + Why is the return value not checked here? If that's not required, can you leave a comment? Wei.
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