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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 3/29/24 23:58, Michael Roth wrote: > From: Brijesh Singh > > Add a module parameter than can be used to enable or disable the SEV-SNP > feature. Now that KVM contains the support for the SNP set the GHCB > hypervisor feature flag to indicate that SNP is supported. > > Signed-off-by: Brijesh Singh > Signed-off-by: Ashish Kalra Reviewed-by: Paolo Bonzini > --- > arch/x86/kvm/svm/sev.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c > index 3e8de7cb3c89..658116537f3f 100644 > --- a/arch/x86/kvm/svm/sev.c > +++ b/arch/x86/kvm/svm/sev.c > @@ -48,7 +48,8 @@ static bool sev_es_enabled = true; > module_param_named(sev_es, sev_es_enabled, bool, 0444); > > /* enable/disable SEV-SNP support */ > -static bool sev_snp_enabled; > +static bool sev_snp_enabled = true; > +module_param_named(sev_snp, sev_snp_enabled, bool, 0444); > > /* enable/disable SEV-ES DebugSwap support */ > static bool sev_es_debug_swap_enabled = true; From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from a.mx.secunet.com (a.mx.secunet.com [62.96.220.36]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 04ABF153511 for ; 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Sat, 30 Mar 2024 14:35:48 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGtpVK74hYMJQRsbSNAOxNo0vPDNEDLKCnR39FTY23/i2sK1bKLUmtvrUTSb2GUD2WssCJO3g== X-Received: by 2002:ac2:4256:0:b0:515:a5b1:1dd0 with SMTP id m22-20020ac24256000000b00515a5b11dd0mr3175156lfl.55.1711834548253; Sat, 30 Mar 2024 14:35:48 -0700 (PDT) Message-ID: Date: Sat, 30 Mar 2024 22:35:44 +0100 Precedence: bulk Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v12 25/29] KVM: SVM: Add module parameter to enable the SEV-SNP To: Michael Roth , kvm@vger.kernel.org Cc: linux-coco@lists.linux.dev, linux-mm@kvack.org, linux-crypto@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, jroedel@suse.de, thomas.lendacky@amd.com, hpa@zytor.com, ardb@kernel.org, seanjc@google.com, vkuznets@redhat.com, jmattson@google.com, luto@kernel.org, dave.hansen@linux.intel.com, slp@redhat.com, pgonda@google.com, peterz@infradead.org, srinivas.pandruvada@linux.intel.com, rientjes@google.com, dovmurik@linux.ibm.com, tobin@ibm.com, bp@alien8.de, vbabka@suse.cz, kirill@shutemov.name, ak@linux.intel.com, tony.luck@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, alpergun@google.com, jarkko@kernel.org, ashish.kalra@amd.com, nikunj.dadhania@amd.com, pankaj.gupta@amd.com, liam.merwick@oracle.com, Brijesh Singh References: <20240329225835.400662-1-michael.roth@amd.com> <20240329225835.400662-26-michael.roth@amd.com> From: Paolo Bonzini Content-Language: en-US Autocrypt: addr=pbonzini@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-EXCLAIMER-MD-CONFIG: 2c86f778-e09b-4440-8b15-867914633a10 Message-ID: <20240330213544.nWNyRU9UgxEsePBAxsVNgIQLZZHS9x-CkKMdP9ox96k@z> On 3/29/24 23:58, Michael Roth wrote: > From: Brijesh Singh >=20 > Add a module parameter than can be used to enable or disable the SEV-SNP > feature. Now that KVM contains the support for the SNP set the GHCB > hypervisor feature flag to indicate that SNP is supported. >=20 > Signed-off-by: Brijesh Singh > Signed-off-by: Ashish Kalra Reviewed-by: Paolo Bonzini > --- > arch/x86/kvm/svm/sev.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) >=20 > diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c > index 3e8de7cb3c89..658116537f3f 100644 > --- a/arch/x86/kvm/svm/sev.c > +++ b/arch/x86/kvm/svm/sev.c > @@ -48,7 +48,8 @@ static bool sev_es_enabled =3D true; > module_param_named(sev_es, sev_es_enabled, bool, 0444); > =20 > /* enable/disable SEV-SNP support */ > -static bool sev_snp_enabled; > +static bool sev_snp_enabled =3D true; > +module_param_named(sev_snp, sev_snp_enabled, bool, 0444); > =20 > /* enable/disable SEV-ES DebugSwap support */ > static bool sev_es_debug_swap_enabled =3D true; X-sender: X-Receiver: ORCPT=3Drfc822;steffen.klassert@= secunet.com NOTIFY=3DNEVER; 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X-MS-Exchange-Organization-Processed-By-Journaling: Journal Agent On 3/29/24 23:58, Michael Roth wrote: > From: Brijesh Singh >=20 > Add a module parameter than can be used to enable or disable the SEV-SNP > feature. Now that KVM contains the support for the SNP set the GHCB > hypervisor feature flag to indicate that SNP is supported. >=20 > Signed-off-by: Brijesh Singh > Signed-off-by: Ashish Kalra Reviewed-by: Paolo Bonzini > --- > arch/x86/kvm/svm/sev.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) >=20 > diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c > index 3e8de7cb3c89..658116537f3f 100644 > --- a/arch/x86/kvm/svm/sev.c > +++ b/arch/x86/kvm/svm/sev.c > @@ -48,7 +48,8 @@ static bool sev_es_enabled =3D true; > module_param_named(sev_es, sev_es_enabled, bool, 0444); > =20 > /* enable/disable SEV-SNP support */ > -static bool sev_snp_enabled; > +static bool sev_snp_enabled =3D true; > +module_param_named(sev_snp, sev_snp_enabled, bool, 0444); > =20 > /* enable/disable SEV-ES DebugSwap support */ > static bool sev_es_debug_swap_enabled =3D true; X-sender: X-Receiver: ORCPT=3Drfc822;steffen.klassert@= secunet.com NOTIFY=3DNEVER; 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(PDT) Message-ID: Date: Sat, 30 Mar 2024 22:35:44 +0100 Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v12 25/29] KVM: SVM: Add module parameter to enable the SEV-SNP To: Michael Roth , kvm@vger.kernel.org Cc: linux-coco@lists.linux.dev, linux-mm@kvack.org, linux-crypto@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org= , tglx@linutronix.de, mingo@redhat.com, jroedel@suse.de, thomas.lendacky@amd.com, hpa@zytor.com, ardb@kernel.org, seanjc@google.com= , vkuznets@redhat.com, jmattson@google.com, luto@kernel.org, dave.hansen@linux.intel.com, slp@redhat.com, pgonda@google.com, peterz@infradead.org, srinivas.pandruvada@linux.intel.com, rientjes@google.com, dovmurik@linux.ibm.com, tobin@ibm.com, bp@alien8.de, vbabka@suse.cz, kirill@shutemov.name, ak@linux.intel.com, tony.luck@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, alpergun@google.com, jarkko@kernel.org, ashish.kalra@amd.com, nikunj.dadhania@amd.com, pankaj.gupta@amd.com, liam.merwick@oracle.com, Brijesh Singh References: <20240329225835.400662-1-michael.roth@amd.com> <20240329225835.400662-26-michael.roth@amd.com> From: Paolo Bonzini Content-Language: en-US Autocrypt: addr=3Dpbonzini@redhat.com; keydata=3D xsEhBFRCcBIBDqDGsz4K0zZun3jh+U6Z9wNGLKQ0kSFyjN38gMqU1SfP+TUNQepFHb/Gc0E2 CxXPkIBTvYY+ZPkoTh5xF9oS1jqI8iRLzouzF8yXs3QjQIZ2SfuCxSVwlV65jotcjD2FTN04 hVopm9llFijNZpVIOGUTqzM4U55sdsCcZUluWM6x4HSOdw5F5Utxfp1wOjD/v92Lrax0hjiX DResHSt48q+8FrZzY+AUbkUS+Jm34qjswdrgsC5uxeVcLkBgWLmov2kMaMROT0YmFY6A3m1S P/kXmHDXxhe23gKb3dgwxUTpENDBGcfEzrzilWueOeUWiOcWuFOed/C3SyijBx3Av/lbCsHU Vx6pMycNTdzU1BuAroB+Y3mNEuW56Yd44jlInzG2UOwt9XjjdKkJZ1g0P9dwptwLEgTEd3Fo UdhAQyRXGYO8oROiuh+RZ1lXp6AQ4ZjoyH8WLfTLf5g1EKCTc4C1sy1vQSdzIRu3rBIjAvnC tGZADei1IExLqB3uzXKzZ1BZ+Z8hnt2og9hb7H0y8diYfEk2w3R7wEr+Ehk5NQsT2MPI2QBd wEv1/Aj1DgUHZAHzG1QN9S8wNWQ6K9DqHZTBnI1hUlkp22zCSHK/6FwUCuYp1zcAEQEAAc0j 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X-MS-Exchange-Organization-Processed-By-Journaling: Journal Agent On 3/29/24 23:58, Michael Roth wrote: > From: Brijesh Singh >=20 > Add a module parameter than can be used to enable or disable the SEV-SNP > feature. Now that KVM contains the support for the SNP set the GHCB > hypervisor feature flag to indicate that SNP is supported. >=20 > Signed-off-by: Brijesh Singh > Signed-off-by: Ashish Kalra Reviewed-by: Paolo Bonzini > --- > arch/x86/kvm/svm/sev.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) >=20 > diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c > index 3e8de7cb3c89..658116537f3f 100644 > --- a/arch/x86/kvm/svm/sev.c > +++ b/arch/x86/kvm/svm/sev.c > @@ -48,7 +48,8 @@ static bool sev_es_enabled =3D true; > module_param_named(sev_es, sev_es_enabled, bool, 0444); > =20 > /* enable/disable SEV-SNP support */ > -static bool sev_snp_enabled; > +static bool sev_snp_enabled =3D true; > +module_param_named(sev_snp, sev_snp_enabled, bool, 0444); > =20 > /* enable/disable SEV-ES DebugSwap support */ > static bool sev_es_debug_swap_enabled =3D true;