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Tsirkin" , Cornelia Huck , Marcel Apfelbaum , Sergio Lopez , Eduardo Habkost , Alistair Francis , Peter Xu , David Hildenbrand , Igor Mammedov , Tom Lendacky , Michael Roth , Ani Sinha , =?UTF-8?q?J=C3=B6rg=20Roedel?= Subject: [PATCH v5 12/16] backends/confidential-guest-support: Add set_guest_policy() function Date: Tue, 13 Aug 2024 16:01:14 +0100 Message-ID: <25c486d1790d12a27efa6af3350154c4f5bbd187.1723560001.git.roy.hopkins@suse.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Spam-Score: -5.80 X-Spamd-Result: default: False [-5.80 / 50.00]; REPLY(-4.00)[]; BAYES_HAM(-3.00)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_TWELVE(0.00)[19]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; TAGGED_RCPT(0.00)[]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_TLS_ALL(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; FROM_HAS_DN(0.00)[]; FREEMAIL_CC(0.00)[suse.com,redhat.com,gmail.com,habkost.net,alistair23.me,amd.com]; R_RATELIMIT(0.00)[to_ip_from(RLm8d31jk6dhzwhww9bgqrb1jt)]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:email,imap1.dmz-prg2.suse.org:helo] Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a07:de40:b251:101:10:150:64:2; envelope-from=roy.hopkins@suse.com; helo=smtp-out2.suse.de 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, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1723561430695116600 For confidential guests a policy can be provided that defines the security level, debug status, expected launch measurement and other parameters that define the configuration of the confidential platform. This commit adds a new function named set_guest_policy() that can be implemented by each confidential platform, such as AMD SEV to set the policy. This will allow configuration of the policy from a multi-platform resource such as an IGVM file without the IGVM processor requiring specific implementation details for each platform. Signed-off-by: Roy Hopkins Reviewed-by: Daniel P. Berrang=C3=A9 Acked-by: Michael S. Tsirkin Reviewed-by: Stefano Garzarella --- backends/confidential-guest-support.c | 12 ++++++++++++ include/exec/confidential-guest-support.h | 21 +++++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/backends/confidential-guest-support.c b/backends/confidential-= guest-support.c index 68e6fd9d18..3c46b2cd6b 100644 --- a/backends/confidential-guest-support.c +++ b/backends/confidential-guest-support.c @@ -38,6 +38,17 @@ static int set_guest_state(hwaddr gpa, uint8_t *ptr, uin= t64_t len, return -1; } =20 +static int set_guest_policy(ConfidentialGuestPolicyType policy_type, + uint64_t policy, + void *policy_data1, uint32_t policy_data1_size, + void *policy_data2, uint32_t policy_data2_size, + Error **errp) +{ + error_setg(errp, + "Setting confidential guest policy is not supported for thi= s platform"); + return -1; +} + static int get_mem_map_entry(int index, ConfidentialGuestMemoryMapEntry *e= ntry, Error **errp) { @@ -52,6 +63,7 @@ static void confidential_guest_support_class_init(ObjectC= lass *oc, void *data) ConfidentialGuestSupportClass *cgsc =3D CONFIDENTIAL_GUEST_SUPPORT_CLA= SS(oc); cgsc->check_support =3D check_support; cgsc->set_guest_state =3D set_guest_state; + cgsc->set_guest_policy =3D set_guest_policy; cgsc->get_mem_map_entry =3D get_mem_map_entry; } =20 diff --git a/include/exec/confidential-guest-support.h b/include/exec/confi= dential-guest-support.h index 058c7535ca..6a9ccc2454 100644 --- a/include/exec/confidential-guest-support.h +++ b/include/exec/confidential-guest-support.h @@ -59,6 +59,10 @@ typedef enum ConfidentialGuestPageType { CGS_PAGE_TYPE_REQUIRED_MEMORY, } ConfidentialGuestPageType; =20 +typedef enum ConfidentialGuestPolicyType { + GUEST_POLICY_SEV, +} ConfidentialGuestPolicyType; + struct ConfidentialGuestSupport { Object parent; =20 @@ -123,6 +127,23 @@ typedef struct ConfidentialGuestSupportClass { ConfidentialGuestPageType memory_type, uint16_t cpu_index, Error **errp); =20 + /* + * Set the guest policy. The policy can be used to configure the + * confidential platform, such as if debug is enabled or not and can c= ontain + * information about expected launch measurements, signed verification= of + * guest configuration and other platform data. + * + * The format of the policy data is specific to each platform. For exa= mple, + * SEV-SNP uses a policy bitfield in the 'policy' argument and provide= s an + * ID block and ID authentication in the 'policy_data' parameters. The= type + * of policy data is identified by the 'policy_type' argument. + */ + int (*set_guest_policy)(ConfidentialGuestPolicyType policy_type, + uint64_t policy, + void *policy_data1, uint32_t policy_data1_size, + void *policy_data2, uint32_t policy_data2_size, + Error **errp); + /* * Iterate the system memory map, getting the entry with the given ind= ex * that can be populated into guest memory. --=20 2.43.0