From: Paolo Bonzini <pbonzini@redhat.com>
To: Michael Roth <michael.roth@amd.com>, Marc Orr <marcorr@google.com>
Cc: linux-kselftest@vger.kernel.org, kvm list <kvm@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>, x86 <x86@kernel.org>,
Nathan Tempelman <natet@google.com>,
Steve Rutherford <srutherford@google.com>,
Sean Christopherson <seanjc@google.com>,
Mingwei Zhang <mizhang@google.com>,
Brijesh Singh <brijesh.singh@amd.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Varad Gautam <varad.gautam@suse.com>,
Shuah Khan <shuah@kernel.org>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
David Woodhouse <dwmw@amazon.co.uk>,
Ricardo Koller <ricarkol@google.com>,
Jim Mattson <jmattson@google.com>,
Wanpeng Li <wanpengli@tencent.com>,
Joerg Roedel <joro@8bytes.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H . Peter Anvin" <hpa@zytor.com>
Subject: Re: [RFC 06/16] KVM: selftests: add library for creating/interacting with SEV guests
Date: Thu, 21 Oct 2021 17:43:06 +0200 [thread overview]
Message-ID: <850e87f4-ad0b-59d7-6e31-b3965b6b6492@redhat.com> (raw)
In-Reply-To: <20211012125536.qpewvk6cou3mxya7@amd.com>
On 12/10/21 14:55, Michael Roth wrote:
> One more I should mention:
>
> 4) After encryption, the page table is no longer usable for translations by
> stuff like addr_gva2gpa(), so tests would either need to be
> audited/updated to do these translations upfront and only rely on
> cached/stored values thereafter, or perhaps a "shadow" copy could be
> maintained by kvm_util so the translations will continue to work
> after encryption.
Yeah, this is a big one. Considering that a lot of the selftests are
for specific bugs, the benefit in running them with SEV is relatively
low. That said, there could be some simple tests where it makes sense,
so it'd be nice to plan a little ahead so that it isn't _too_ difficult.
Paolo
next prev parent reply other threads:[~2021-10-21 15:43 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-05 23:44 [RFC 00/16] KVM: selftests: Add tests for SEV, SEV-ES, and SEV-SNP guests Michael Roth
2021-10-05 23:44 ` [RFC 01/16] KVM: selftests: move vm_phy_pages_alloc() earlier in file Michael Roth
2021-10-18 15:00 ` Mingwei Zhang
2021-10-21 3:45 ` Michael Roth
2021-10-21 15:20 ` Paolo Bonzini
2021-10-26 15:52 ` Mingwei Zhang
2021-11-01 17:43 ` Mingwei Zhang
2021-10-05 23:44 ` [RFC 02/16] KVM: selftests: add hooks for managing encrypted guest memory Michael Roth
2021-10-13 2:20 ` Krish Sadhukhan
2021-10-13 15:07 ` Michael Roth
2021-10-21 15:22 ` Paolo Bonzini
2021-10-18 15:00 ` Mingwei Zhang
2021-10-21 3:37 ` Michael Roth
2021-10-21 15:22 ` Paolo Bonzini
2021-10-26 15:48 ` Mingwei Zhang
2021-11-01 17:44 ` Mingwei Zhang
2021-10-05 23:44 ` [RFC 03/16] KVM: selftests: handle encryption bits in page tables Michael Roth
2021-10-21 15:26 ` Paolo Bonzini
2021-10-24 16:49 ` Michael Roth
2021-10-25 7:34 ` Paolo Bonzini
2021-10-25 14:14 ` Michael Roth
2021-10-05 23:44 ` [RFC 09/16] KVM: selftests: account for error code in #VC exception frame Michael Roth
2021-10-05 23:44 ` [RFC 10/16] KVM: selftests: add support for creating SEV-ES guests Michael Roth
2021-10-05 23:44 ` [RFC 11/16] KVM: selftests: add library for handling SEV-ES-related exits Michael Roth
2021-10-05 23:44 ` [RFC 12/16] KVM: selftests: add SEV-ES boot tests Michael Roth
2021-10-05 23:44 ` [RFC 13/16] KVM: selftests: add support for creating SEV-SNP guests Michael Roth
2021-10-05 23:44 ` [RFC 14/16] KVM: selftests: add helpers for SEV-SNP-related instructions/exits Michael Roth
2021-10-05 23:44 ` [RFC 15/16] KVM: selftests: add SEV-SNP boot tests Michael Roth
2021-10-05 23:44 ` [RFC 16/16] KVM: selftests: add SEV-SNP tests for page-state changes Michael Roth
2021-10-06 20:28 ` [RFC 04/16] KVM: selftests: add library for creating/interacting with SEV guests Michael Roth
2021-10-06 20:59 ` Michael Roth
2021-10-06 20:36 ` [RFC 04/16] KVM: selftests: set CPUID before setting sregs in vcpu creation Michael Roth
2021-10-08 19:03 ` Nathan Tempelman
2021-10-13 1:45 ` Krish Sadhukhan
2021-10-13 15:05 ` Michael Roth
2021-10-21 15:29 ` Paolo Bonzini
2021-10-06 20:36 ` [RFC 05/16] KVM: selftests: add support for encrypted vm_vaddr_* allocations Michael Roth
2021-10-06 20:37 ` [RFC 06/16] KVM: selftests: add library for creating/interacting with SEV guests Michael Roth
2021-10-11 3:17 ` Marc Orr
2021-10-12 1:15 ` Michael Roth
2021-10-12 12:55 ` Michael Roth
2021-10-21 15:43 ` Paolo Bonzini [this message]
2021-11-04 5:25 ` Mingwei Zhang
2021-11-04 13:44 ` Tom Lendacky
2021-10-14 1:26 ` Krish Sadhukhan
2021-10-16 2:56 ` Krish Sadhukhan
2021-10-21 15:39 ` Paolo Bonzini
2021-10-25 3:58 ` Michael Roth
2021-10-06 20:37 ` [RFC 07/16] KVM: selftests: add SEV boot tests Michael Roth
2021-10-16 2:55 ` Krish Sadhukhan
2021-10-21 3:35 ` Michael Roth
2021-10-06 20:37 ` [RFC 08/16] KVM: SVM: include CR3 in initial VMSA state for SEV-ES guests Michael Roth
2021-10-21 16:43 ` Paolo Bonzini
2021-10-25 3:59 ` Michael Roth
2021-10-21 16:48 ` [RFC 00/16] KVM: selftests: Add tests for SEV, SEV-ES, and SEV-SNP guests Paolo Bonzini
2021-10-25 4:27 ` Michael Roth
2021-10-25 7:35 ` Paolo Bonzini
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