68 lines
2.5 KiB
Diff
68 lines
2.5 KiB
Diff
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From da96618de3227b87ddd78388b80278bde230ce79 Mon Sep 17 00:00:00 2001
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From: Brijesh Singh <brijesh.singh@amd.com>
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Date: Tue, 27 Jul 2021 11:41:37 +0000
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Subject: [PATCH] confidential guest support: introduce
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ConfidentialGuestMemoryEncryptionOps for encrypted VMs
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cherry-picked from https://github.com/AMDESE/qemu/commit/74fce7be9bd.
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When memory encryption is enabled in VM, the guest RAM will be encrypted
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with the guest-specific key, to protect the confidentiality of data while
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in transit we need to platform specific hooks to save or migrate the
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guest RAM.
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Introduce the new ConfidentialGuestMemoryEncryptionOps in this patch
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which will be later used by the encrypted guest for migration.
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Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
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Co-developed-by: Ashish Kalra <ashish.kalra@amd.com>
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Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
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Signed-off-by: hanliyang <hanliyang@hygon.cn>
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---
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include/exec/confidential-guest-support.h | 27 +++++++++++++++++++++++
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1 file changed, 27 insertions(+)
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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..343f686fc2 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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@@ -53,8 +53,35 @@ struct ConfidentialGuestSupport {
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bool ready;
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};
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+/**
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+ * The functions registers with ConfidentialGuestMemoryEncryptionOps will be
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+ * used during the encrypted guest migration.
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+ */
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+struct ConfidentialGuestMemoryEncryptionOps {
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+ /* Initialize the platform specific state before starting the migration */
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+ int (*save_setup)(const char *pdh, const char *plat_cert,
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+ const char *amd_cert);
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+
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+ /* Write the encrypted page and metadata associated with it */
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+ int (*save_outgoing_page)(QEMUFile *f, uint8_t *ptr, uint32_t size,
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+ uint64_t *bytes_sent);
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+
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+ /* Load the incoming encrypted page into guest memory */
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+ int (*load_incoming_page)(QEMUFile *f, uint8_t *ptr);
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+
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+ /* Check if gfn is in shared/unencrypted region */
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+ bool (*is_gfn_in_unshared_region)(unsigned long gfn);
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+
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+ /* Write the shared regions list */
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+ int (*save_outgoing_shared_regions_list)(QEMUFile *f);
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+
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+ /* Load the shared regions list */
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+ int (*load_incoming_shared_regions_list)(QEMUFile *f);
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+};
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+
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typedef struct ConfidentialGuestSupportClass {
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ObjectClass parent;
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+ struct ConfidentialGuestMemoryEncryptionOps *memory_encryption_ops;
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} ConfidentialGuestSupportClass;
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#endif /* !CONFIG_USER_ONLY */
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--
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2.41.0.windows.1
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