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Open Source and information security mailing list archives
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Date: Mon, 2 Aug 2021 20:59:48 +0800 From: Tianyu Lan <ltykernel@...il.com> To: Joerg Roedel <joro@...tes.org>, Dave Hansen <dave.hansen@...el.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, 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, rientjes@...gle.com, martin.b.radev@...il.com, akpm@...ux-foundation.org, rppt@...nel.org, kirill.shutemov@...ux.intel.com, aneesh.kumar@...ux.ibm.com, krish.sadhukhan@...cle.com, saravanand@...com, xen-devel@...ts.xenproject.org, pgonda@...gle.com, david@...hat.com, keescook@...omium.org, hannes@...xchg.org, sfr@...b.auug.org.au, 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, anparri@...rosoft.com Subject: Re: [PATCH 03/13] x86/HV: Add new hvcall guest address host visibility support On 8/2/2021 8:01 PM, Joerg Roedel wrote: > On Wed, Jul 28, 2021 at 08:29:41AM -0700, Dave Hansen wrote: >> __set_memory_enc_dec() is turning into a real mess. SEV, TDX and now >> Hyper-V are messing around in here. > > I was going to suggest a PV_OPS call where the fitting implementation > for the guest environment can be plugged in at boot. There is TDX and an > SEV(-SNP) case, a Hyper-V case, and likely more coming up from other > cloud/hypervisor vendors. Hiding all these behind feature checks is not > going to make things cleaner. > Yes, that makes sense. I will do this in the next version.
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