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123 lines
4.4 KiB
123 lines
4.4 KiB
2 months ago
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From 0f7432f2b968298b64fd243df793b176f67a538f Mon Sep 17 00:00:00 2001
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From: Brijesh Singh <brijesh.singh@amd.com>
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Date: Thu, 30 May 2024 06:16:27 -0500
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Subject: [PATCH 067/100] i386/sev: Add the SNP launch start context
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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RH-MergeRequest: 245: SEV-SNP support
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RH-Jira: RHEL-39544
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Bandan Das <bdas@redhat.com>
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RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
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RH-Commit: [67/91] 63759a25a413a7a9a7274fb4c3b8bc2528634855 (bonzini/rhel-qemu-kvm)
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The SNP_LAUNCH_START is called first to create a cryptographic launch
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context within the firmware.
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Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
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Signed-off-by: Michael Roth <michael.roth@amd.com>
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Co-developed-by: Pankaj Gupta <pankaj.gupta@amd.com>
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Signed-off-by: Pankaj Gupta <pankaj.gupta@amd.com>
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Message-ID: <20240530111643.1091816-16-pankaj.gupta@amd.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit d3107f882ec22cfb211eab7efa0c4e95f5ce11bb)
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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---
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target/i386/sev.c | 39 +++++++++++++++++++++++++++++++++++++++
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target/i386/trace-events | 1 +
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2 files changed, 40 insertions(+)
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diff --git a/target/i386/sev.c b/target/i386/sev.c
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index 43d1c48bd9..e89b87d2f5 100644
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--- a/target/i386/sev.c
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+++ b/target/i386/sev.c
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@@ -39,6 +39,7 @@
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#include "confidential-guest.h"
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#include "hw/i386/pc.h"
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#include "exec/address-spaces.h"
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+#include "qemu/queue.h"
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OBJECT_DECLARE_TYPE(SevCommonState, SevCommonStateClass, SEV_COMMON)
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OBJECT_DECLARE_TYPE(SevGuestState, SevCommonStateClass, SEV_GUEST)
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@@ -115,6 +116,16 @@ struct SevSnpGuestState {
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#define DEFAULT_SEV_DEVICE "/dev/sev"
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#define DEFAULT_SEV_SNP_POLICY 0x30000
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+typedef struct SevLaunchUpdateData {
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+ QTAILQ_ENTRY(SevLaunchUpdateData) next;
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+ hwaddr gpa;
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+ void *hva;
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+ uint64_t len;
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+ int type;
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+} SevLaunchUpdateData;
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+
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+static QTAILQ_HEAD(, SevLaunchUpdateData) launch_update;
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+
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#define SEV_INFO_BLOCK_GUID "00f771de-1a7e-4fcb-890e-68c77e2fb44e"
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typedef struct __attribute__((__packed__)) SevInfoBlock {
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/* SEV-ES Reset Vector Address */
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@@ -674,6 +685,31 @@ sev_read_file_base64(const char *filename, guchar **data, gsize *len)
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return 0;
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}
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+static int
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+sev_snp_launch_start(SevCommonState *sev_common)
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+{
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+ int fw_error, rc;
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+ SevSnpGuestState *sev_snp_guest = SEV_SNP_GUEST(sev_common);
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+ struct kvm_sev_snp_launch_start *start = &sev_snp_guest->kvm_start_conf;
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+
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+ trace_kvm_sev_snp_launch_start(start->policy,
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+ sev_snp_guest->guest_visible_workarounds);
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+
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+ rc = sev_ioctl(sev_common->sev_fd, KVM_SEV_SNP_LAUNCH_START,
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+ start, &fw_error);
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+ if (rc < 0) {
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+ error_report("%s: SNP_LAUNCH_START ret=%d fw_error=%d '%s'",
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+ __func__, rc, fw_error, fw_error_to_str(fw_error));
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+ return 1;
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+ }
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+
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+ QTAILQ_INIT(&launch_update);
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+
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+ sev_set_guest_state(sev_common, SEV_STATE_LAUNCH_UPDATE);
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+
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+ return 0;
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+}
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+
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static int
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sev_launch_start(SevCommonState *sev_common)
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{
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@@ -1003,6 +1039,7 @@ static int sev_common_kvm_init(ConfidentialGuestSupport *cgs, Error **errp)
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}
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ret = klass->launch_start(sev_common);
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+
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if (ret) {
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error_setg(errp, "%s: failed to create encryption context", __func__);
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return -1;
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@@ -1794,9 +1831,11 @@ sev_snp_guest_class_init(ObjectClass *oc, void *data)
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SevCommonStateClass *klass = SEV_COMMON_CLASS(oc);
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X86ConfidentialGuestClass *x86_klass = X86_CONFIDENTIAL_GUEST_CLASS(oc);
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+ klass->launch_start = sev_snp_launch_start;
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klass->kvm_init = sev_snp_kvm_init;
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x86_klass->kvm_type = sev_snp_kvm_type;
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+
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object_class_property_add(oc, "policy", "uint64",
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sev_snp_guest_get_policy,
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sev_snp_guest_set_policy, NULL, NULL);
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diff --git a/target/i386/trace-events b/target/i386/trace-events
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index 2cd8726eeb..cb26d8a925 100644
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--- a/target/i386/trace-events
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+++ b/target/i386/trace-events
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@@ -11,3 +11,4 @@ kvm_sev_launch_measurement(const char *value) "data %s"
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kvm_sev_launch_finish(void) ""
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kvm_sev_launch_secret(uint64_t hpa, uint64_t hva, uint64_t secret, int len) "hpa 0x%" PRIx64 " hva 0x%" PRIx64 " data 0x%" PRIx64 " len %d"
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kvm_sev_attestation_report(const char *mnonce, const char *data) "mnonce %s data %s"
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+kvm_sev_snp_launch_start(uint64_t policy, char *gosvw) "policy 0x%" PRIx64 " gosvw %s"
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--
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2.39.3
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