974df88e9a
JIRA: https://issues.redhat.com/browse/RHEL-49791 During early boot phases, check for the presence of an SVSM when running as an SEV-SNP guest. An SVSM is present if not running at VMPL0 and the 64-bit value at offset 0x148 into the secrets page is non-zero. If an SVSM is present, save the SVSM Calling Area address (CAA), located at offset 0x150 into the secrets page, and set the VMPL level of the guest, which should be non-zero, to indicate the presence of an SVSM. [ bp: Touchups. ] Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/9d3fe161be93d4ea60f43c2a3f2c311fe708b63b.1717600736.git.thomas.lendacky@amd.com (cherry picked from commit 878e70dbd26e234e6e6941dac3a233af6f632184) Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> RHEL: docs conflict |
||
|---|---|---|
| .. | ||
| i386 | ||
| x86_64 | ||
| amd-memory-encryption.rst | ||
| booting-dt.rst | ||
| buslock.rst | ||
| cpuinfo.rst | ||
| earlyprintk.rst | ||
| elf_auxvec.rst | ||
| entry_64.rst | ||
| exception-tables.rst | ||
| features.rst | ||
| ifs.rst | ||
| index.rst | ||
| intel-hfi.rst | ||
| intel-iommu.rst | ||
| intel_txt.rst | ||
| kernel-stacks.rst | ||
| mds.rst | ||
| microcode.rst | ||
| mtrr.rst | ||
| orc-unwinder.rst | ||
| pat.rst | ||
| pti.rst | ||
| sgx.rst | ||
| sva.rst | ||
| tdx.rst | ||
| tlb.rst | ||
| tsx_async_abort.rst | ||
| usb-legacy-support.rst | ||
| xstate.rst | ||
| zero-page.rst | ||