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Message-ID: <20241101181533.1976040-5-dionnaglaze@google.com>
Date: Fri, 1 Nov 2024 18:15:29 +0000
From: Dionna Glaze <dionnaglaze@...gle.com>
To: linux-kernel@...r.kernel.org, x86@...nel.org,
Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>,
Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>, "H. Peter Anvin" <hpa@...or.com>
Cc: Dionna Glaze <dionnaglaze@...gle.com>, Ashish Kalra <ashish.kalra@....com>,
Tom Lendacky <thomas.lendacky@....com>, John Allen <john.allen@....com>,
Herbert Xu <herbert@...dor.apana.org.au>, "David S. Miller" <davem@...emloft.net>,
Michael Roth <michael.roth@....com>, Luis Chamberlain <mcgrof@...nel.org>,
Russ Weight <russ.weight@...ux.dev>, Danilo Krummrich <dakr@...hat.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Rafael J. Wysocki" <rafael@...nel.org>,
Tianfei zhang <tianfei.zhang@...el.com>, kvm@...r.kernel.org
Subject: [PATCH v2 4/4] KVM: SVM: Delay legacy platform initialization on SNP
When no SEV or SEV-ES guests are active, then the firmware can be
updated while (SEV-SNP) VM guests are active.
CC: Sean Christopherson <seanjc@...gle.com>
CC: Paolo Bonzini <pbonzini@...hat.com>
CC: Thomas Gleixner <tglx@...utronix.de>
CC: Ingo Molnar <mingo@...hat.com>
CC: Borislav Petkov <bp@...en8.de>
CC: Dave Hansen <dave.hansen@...ux.intel.com>
CC: Ashish Kalra <ashish.kalra@....com>
CC: Tom Lendacky <thomas.lendacky@....com>
CC: John Allen <john.allen@....com>
CC: Herbert Xu <herbert@...dor.apana.org.au>
CC: "David S. Miller" <davem@...emloft.net>
CC: Michael Roth <michael.roth@....com>
CC: Luis Chamberlain <mcgrof@...nel.org>
CC: Russ Weight <russ.weight@...ux.dev>
CC: Danilo Krummrich <dakr@...hat.com>
CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC: "Rafael J. Wysocki" <rafael@...nel.org>
CC: Tianfei zhang <tianfei.zhang@...el.com>
Co-developed-by: Ashish Kalra <ashish.kalra@....com>
Signed-off-by: Ashish Kalra <ashish.kalra@....com>
Reviewed-by: Ashish Kalra <ashish.kalra@....com>
Signed-off-by: Dionna Glaze <dionnaglaze@...gle.com>
---
arch/x86/kvm/svm/sev.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index f6e96ec0a5caa..8d365e2e3c1b1 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -445,6 +445,8 @@ static int __sev_guest_init(struct kvm *kvm, struct kvm_sev_cmd *argp,
goto e_no_asid;
init_args.probe = false;
+ init_args.supports_download_firmware_ex =
+ vm_type != KVM_X86_SEV_VM && vm_type != KVM_X86_SEV_ES_VM;
ret = sev_platform_init(&init_args);
if (ret)
goto e_free;
--
2.47.0.163.g1226f6d8fa-goog
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