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[81.110.179.140]) by smtp.gmail.com with ESMTPSA id b2-20020a05600c4e0200b004140837a0d4sm2461628wmq.3.2024.03.20.07.44.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Mar 2024 07:44:18 -0700 (PDT) Message-ID: Subject: Re: [PATCH 2/9] backends/confidential-guest-support: Add IGVM file parameter From: Roy Hopkins To: Stefano Garzarella Cc: qemu-devel@nongnu.org, Paolo Bonzini , Marcelo Tosatti , "Michael S . Tsirkin" , Cornelia Huck , Marcel Apfelbaum , Sergio Lopez , Eduardo Habkost , Alistair Francis , Peter Xu , David Hildenbrand , Igor Mammedov , Tom Lendacky , Michael Roth , =?ISO-8859-1?Q?J=F6rg?= Roedel Date: Wed, 20 Mar 2024 14:44:17 +0000 In-Reply-To: <4ayfzr7mwmb2smh5jdwnimasmvazmozeo7kn7x2oojaqreijjn@myyxobx4rml4> References: <26c2bb5f2de41471dde304223cd943215d3183c5.1709044754.git.roy.hopkins@suse.com> <4ayfzr7mwmb2smh5jdwnimasmvazmozeo7kn7x2oojaqreijjn@myyxobx4rml4> Autocrypt: addr=roy.hopkins@suse.com; prefer-encrypt=mutual; keydata=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 xxM+XCNQ2nHflbK+QCvRky9wZPnACO6VoFjwD89X4GJYvwtc4phnG9Tm5skW TjtmBFYuzf6IRxQ0f+N3ixKykJegpS4zRVooD1/W8c6XBDS6UeHlb7PhXm45lIJRZqogPhoua/EqP59WvbEailR0HUSjgioreRwp9Nu308ADsNIVOF1v6kf1OWwVCO7n7imAj8oWcG8CKlTvu7CYl+QPr+di2hjemU13qP10k9vxbHEdQ9oovWWs+4ndlYpYf7aK/F1kdptwLamGCphHBbjwdTkFmn1q9STG560IlJveSBIb3BraW5zIDxyb3kuaG9wa2luc0BzdXNlLmNvbT6JAdQEEwEKAD4WIQSlmXeP2cn9E8gmn9bhiafdRpNKTQUCZABdKwIbAwUJA8JnAAULCQgHAgYVCgkICwIEFgIDAQIeAQIXgAAKCRDhiafdRpNKTR5gDAC4ziQZWxg1L/H74UxqRYCgY+ub3LZzJT2GzOu3IPZS42/wUbssESo2AsuPoBQEqvnoNPSU3netzURH/Raf6iad4ZHwG71U5wA5Ff10uuvRpERNStUSDFS1/IYmCNhZzUIJBxuT8uwaMbk4eaNaqaxpTJ8ENalipKFUQcLxjjth7HKztFJw/FZE8GXtL6RsNqoFYB6LLj4c+EzXYOwpmQtzQNsjQnuqp/KKeeVn4UX4FFUrZLZ46eJAMLA0AssBvctlxahQ9URBKKqa2X+oDpz+l9uYWg/ColC9z6cr2ohYjUlz+C7AGdXZTF5pBh7uLAjAaD5qYlNEzUGeaK4NwKyvwpdVw0aAamKu8MKkuxDfs08vi7cEeI97K9NKQOISMNkLo/q6WM9yjk5ZoGilqJibzidoI/1P45+fJ/ggvEMqyUY8mN+g8xCR2fJDzHSh77QmVF8oDwnGr1QMYbXMGXGsVza7LXBXYdWIjvvKxqxc8Z8rFdpupOzx0zPMc9bUCb65AY0EY9t9NwEMAL3jxajdfoMhLJ8Ki idHEAO0LDMtSq7jpkIA5q2289WB/8+2xTEn3lsjEoWe/IfdxzwiuZunp0yJPe 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 ee6kYEiujDrEv6DXG/9NSh2ahBMYOgQkwrUaPvdhnt/N0VgC4a++gdaWoQLCPM HHaxeHr5n/cWyrSpSRrYXZqcW+FKwESA79arqD2bl Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.2 MIME-Version: 1.0 Received-SPF: permerror client-ip=2a00:1450:4864:20::332; envelope-from=roy.hopkins@suse.com; helo=mail-wm1-x332.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Tue, 2024-03-19 at 16:10 +0100, Stefano Garzarella wrote: > On Tue, Feb 27, 2024 at 02:50:08PM +0000, Roy Hopkins wrote: > > In order to add support for parsing IGVM files for secure virtual > > machines, a the path to an IGVM file needs to be specified as > > part of the guest configuration. It makes sense to add this to > > the ConfidentialGuestSupport object as this is common to all secure > > virtual machines that potentially could support IGVM based > > configuration. > >=20 > > This patch allows the filename to be configured via the QEMU > > object model in preparation for subsequent patches that will read and > > parse the IGVM file. > >=20 > > Signed-off-by: Roy Hopkins > > --- > > backends/confidential-guest-support.c=C2=A0=C2=A0=C2=A0=C2=A0 | 21 ++++= +++++++++++++++++ > > include/exec/confidential-guest-support.h |=C2=A0 9 +++++++++ > > qapi/qom.json=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 | 13 +++++++++++++ > > qemu-options.hx=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0 |=C2=A0 8 +++++++- > > 4 files changed, 50 insertions(+), 1 deletion(-) > >=20 > > diff --git a/backends/confidential-guest-support.c b/backends/confident= ial- > > guest-support.c > > index 052fde8db0..da436fb736 100644 > > --- a/backends/confidential-guest-support.c > > +++ b/backends/confidential-guest-support.c > > @@ -20,8 +20,29 @@ OBJECT_DEFINE_ABSTRACT_TYPE(ConfidentialGuestSupport= , > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 CONFIDENTIAL_GUEST_SUPPORT, > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 OBJECT) > >=20 > > +#if defined(CONFIG_IGVM) > > +static char *get_igvm(Object *obj, Error **errp) > > +{ > > +=C2=A0=C2=A0=C2=A0 ConfidentialGuestSupport *cgs =3D CONFIDENTIAL_GUES= T_SUPPORT(obj); > > +=C2=A0=C2=A0=C2=A0 return g_strdup(cgs->igvm_filename); > > +} > > + > > +static void set_igvm(Object *obj, const char *value, Error **errp) > > +{ > > +=C2=A0=C2=A0=C2=A0 ConfidentialGuestSupport *cgs =3D CONFIDENTIAL_GUES= T_SUPPORT(obj); > > +=C2=A0=C2=A0=C2=A0 g_free(cgs->igvm_filename); > > +=C2=A0=C2=A0=C2=A0 cgs->igvm_filename =3D g_strdup(value); > > +} > > +#endif > > + > > static void confidential_guest_support_class_init(ObjectClass *oc, void > > *data) > > { > > +#if defined(CONFIG_IGVM) > > +=C2=A0=C2=A0=C2=A0 object_class_property_add_str(oc, "igvm-file", > > +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 get_igvm, set_igvm); > > +=C2=A0=C2=A0=C2=A0 object_class_property_set_description(oc, "igvm-fil= e", > > +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 "Set the IGVM filename to u= se"); > > +#endif > > } > >=20 > > static void confidential_guest_support_init(Object *obj) > > diff --git a/include/exec/confidential-guest-support.h > > b/include/exec/confidential-guest-support.h > > index ba2dd4b5df..b08ad8de4d 100644 > > --- a/include/exec/confidential-guest-support.h > > +++ b/include/exec/confidential-guest-support.h > > @@ -51,6 +51,15 @@ struct ConfidentialGuestSupport { > > =C2=A0=C2=A0=C2=A0=C2=A0 * so 'ready' is not set, we'll abort. > > =C2=A0=C2=A0=C2=A0=C2=A0 */ > > =C2=A0=C2=A0=C2=A0 bool ready; > > + > > +#if defined(CONFIG_IGVM) > > +=C2=A0=C2=A0=C2=A0 /* > > +=C2=A0=C2=A0=C2=A0=C2=A0 * igvm_filename: Optional filename that speci= fies a file that contains > > +=C2=A0=C2=A0=C2=A0=C2=A0 *=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 the configuration of the g= uest in Isolated Guest > > +=C2=A0=C2=A0=C2=A0=C2=A0 *=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Virtual Machine (IGVM) for= mat. > > +=C2=A0=C2=A0=C2=A0=C2=A0 */ > > +=C2=A0=C2=A0=C2=A0 char *igvm_filename; > > +#endif > > }; > >=20 > > typedef struct ConfidentialGuestSupportClass { > > diff --git a/qapi/qom.json b/qapi/qom.json > > index 2a6e49365a..570bdd7d55 100644 > > --- a/qapi/qom.json > > +++ b/qapi/qom.json > > @@ -859,6 +859,18 @@ > > =C2=A0 'base': 'RngProperties', > > =C2=A0 'data': { '*filename': 'str' } } > >=20 > > +## > > +# @ConfidentialGuestProperties: > > +# > > +# Properties common to objects that are derivatives of confidential-gu= est- > > support. > > +# > > +# @igvm-file: IGVM file to use to configure guest (default: none) > > +# > > +# Since: 8.2 >=20 > Should it be 9.0 or maybe 9.1 ? Good question. Obviously it is hard to predict which version this will potentially land in. I can update it to 9.1 because it is unlikely to be in= any version prior to this, but what is the normal convention for choosing a ver= sion number here? >=20 > > +## > > +{ 'struct': 'ConfidentialGuestProperties', > > +=C2=A0 'data': { '*igvm-file': 'str' } } > > + > > ## > > # @SevGuestProperties: > > # > > @@ -886,6 +898,7 @@ > > # Since: 2.12 > > ## > > { 'struct': 'SevGuestProperties', > > +=C2=A0 'base': 'ConfidentialGuestProperties', > > =C2=A0 'data': { '*sev-device': 'str', > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 '*dh= -cert-file': 'str', > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 '*se= ssion-file': 'str', > > diff --git a/qemu-options.hx b/qemu-options.hx > > index 9be1e5817c..49d9226e35 100644 > > --- a/qemu-options.hx > > +++ b/qemu-options.hx > > @@ -5640,7 +5640,7 @@ SRST > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0 -object secret,id=3Dsec0,keyid=3Dsecmaster0,for= mat=3Dbase64,\\ > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 data=3D$SECRET,iv=3D$(<= iv.b64) > >=20 > > -=C2=A0=C2=A0=C2=A0 ``-object sev-guest,id=3Did,cbitpos=3Dcbitpos,reduc= ed-phys-bits=3Dval,[sev- > > device=3Dstring,policy=3Dpolicy,handle=3Dhandle,dh-cert-file=3Dfile,ses= sion- > > file=3Dfile,kernel-hashes=3Don|off]`` > > +=C2=A0=C2=A0=C2=A0 ``-object sev-guest,id=3Did,cbitpos=3Dcbitpos,reduc= ed-phys-bits=3Dval,[sev- > > device=3Dstring,policy=3Dpolicy,handle=3Dhandle,dh-cert-file=3Dfile,ses= sion- > > file=3Dfile,kernel-hashes=3Don|off,igvm-file=3Dfile]`` > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Create a Secure Encrypted Vi= rtualization (SEV) guest object, > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 which can be used to provide= the guest memory encryption support > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 on AMD processors. > > @@ -5684,6 +5684,12 @@ SRST > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 cmdline to a designated gues= t firmware page for measured Linux > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 boot with -kernel. The defau= lt is off. (Since 6.2) > >=20 > > +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The ``igvm-file`` is an opt= ional parameter that, when specified, > > +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 allows an Independent Guest= Virtual Machine (IGVM) file to be > > +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 specified that configures t= he secure virtual machine and can > > +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 include, for example, an SV= SM module, system firmware, initial > > +=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 boot state, etc. > > + > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 e.g to launch a SEV guest > >=20 > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 .. parsed-literal:: > > --=20 > > 2.43.0 > >=20 > >=20 >=20