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91 lines
3.1 KiB
91 lines
3.1 KiB
2 months ago
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From 0f0a3a860a07addea21a0282556a5022b9cb8b2c Mon Sep 17 00:00:00 2001
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From: Xiaoyao Li <xiaoyao.li@intel.com>
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Date: Thu, 29 Feb 2024 01:00:35 -0500
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Subject: [PATCH 011/100] confidential guest support: Add kvm_init() and
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kvm_reset() in class
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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: [11/91] 21d2178178bf181a8e4d0b051f64bd983f0d0cf1 (bonzini/rhel-qemu-kvm)
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Different confidential VMs in different architectures all have the same
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needs to do their specific initialization (and maybe resetting) stuffs
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with KVM. Currently each of them exposes individual *_kvm_init()
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functions and let machine code or kvm code to call it.
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To facilitate the introduction of confidential guest technology from
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different x86 vendors, add two virtual functions, kvm_init() and kvm_reset()
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in ConfidentialGuestSupportClass, and expose two helpers functions for
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invodking them.
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Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
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Message-Id: <20240229060038.606591-1-xiaoyao.li@intel.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit 41a605944e3fecae43ca18ded95ec31f28e0c7fe)
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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---
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include/exec/confidential-guest-support.h | 34 ++++++++++++++++++++++-
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1 file changed, 33 insertions(+), 1 deletion(-)
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diff --git a/include/exec/confidential-guest-support.h b/include/exec/confidential-guest-support.h
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index ba2dd4b5df..e5b188cffb 100644
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--- a/include/exec/confidential-guest-support.h
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+++ b/include/exec/confidential-guest-support.h
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@@ -23,7 +23,10 @@
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#include "qom/object.h"
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#define TYPE_CONFIDENTIAL_GUEST_SUPPORT "confidential-guest-support"
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-OBJECT_DECLARE_SIMPLE_TYPE(ConfidentialGuestSupport, CONFIDENTIAL_GUEST_SUPPORT)
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+OBJECT_DECLARE_TYPE(ConfidentialGuestSupport,
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+ ConfidentialGuestSupportClass,
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+ CONFIDENTIAL_GUEST_SUPPORT)
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+
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struct ConfidentialGuestSupport {
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Object parent;
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@@ -55,8 +58,37 @@ struct ConfidentialGuestSupport {
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typedef struct ConfidentialGuestSupportClass {
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ObjectClass parent;
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+
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+ int (*kvm_init)(ConfidentialGuestSupport *cgs, Error **errp);
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+ int (*kvm_reset)(ConfidentialGuestSupport *cgs, Error **errp);
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} ConfidentialGuestSupportClass;
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+static inline int confidential_guest_kvm_init(ConfidentialGuestSupport *cgs,
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+ Error **errp)
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+{
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+ ConfidentialGuestSupportClass *klass;
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+
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+ klass = CONFIDENTIAL_GUEST_SUPPORT_GET_CLASS(cgs);
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+ if (klass->kvm_init) {
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+ return klass->kvm_init(cgs, errp);
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+ }
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+
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+ return 0;
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+}
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+
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+static inline int confidential_guest_kvm_reset(ConfidentialGuestSupport *cgs,
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+ Error **errp)
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+{
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+ ConfidentialGuestSupportClass *klass;
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+
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+ klass = CONFIDENTIAL_GUEST_SUPPORT_GET_CLASS(cgs);
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+ if (klass->kvm_reset) {
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+ return klass->kvm_reset(cgs, errp);
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+ }
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+
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+ return 0;
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+}
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+
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#endif /* !CONFIG_USER_ONLY */
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#endif /* QEMU_CONFIDENTIAL_GUEST_SUPPORT_H */
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--
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2.39.3
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