Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
Brijesh Singh
authored
The SEV FW version >= 0.23 added a new command that can be used to query the attestation report containing the SHA-256 digest of the guest memory encrypted through the KVM_SEV_LAUNCH_UPDATE_{DATA, VMSA} commands and sign the report with the Platform Endorsement Key (PEK). See the SEV FW API spec section 6.8 for more details. Note there already exist a command (KVM_SEV_LAUNCH_MEASURE) that can be used to get the SHA-256 digest. The main difference between the KVM_SEV_LAUNCH_MEASURE and KVM_SEV_ATTESTATION_REPORT is that the latter can be called while the guest is running and the measurement value is signed with PEK. Cc: James Bottomley <jejb@linux.ibm.com> Cc: Tom Lendacky <Thomas.Lendacky@amd.com> Cc: David Rientjes <rientjes@google.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Borislav Petkov <bp@alien8.de> Cc: John Allen <john.allen@amd.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: linux-crypto@vger.kernel.org Reviewed-by:Tom Lendacky <thomas.lendacky@amd.com> Acked-by:
David Rientjes <rientjes@google.com> Tested-by:
James Bottomley <jejb@linux.ibm.com> Signed-off-by:
Brijesh Singh <brijesh.singh@amd.com> Message-Id: <20210104151749.30248-1-brijesh.singh@amd.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com>
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