On Thu, Apr 22, 2021 at 9:29 PM Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx> wrote: > > ACPICA commit b5e6bcf69dbb9877481992d5ce86008cfb94f5b8 > > SVKL (Storage Volume Key Location Table) is used by BIOS/Firmware > to share storage volume encryption key's with OS. It will be used > by userspace to decrypt and mount encrypted drives. > > So add SVKL table signature and add it to known signatures array > support SVKL. > > You can find details about the SVKL table in TDX specfication > titled "Guest-Host-Communication Interface (GHCI) for Intel > Trust Domain Extensions (Intel® TDX)", sec 4.4 and in ACPI > specification r6.4, sec 5.2.6. > > https://software.intel.com/content/dam/develop/external/us/en/documents/intel-tdx-guest-hypervisor-communication-interface.pdf > > Cc: Robert Moore <robert.moore@xxxxxxxxx> > Cc: Erik Kaneda <erik.kaneda@xxxxxxxxx> > Cc: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > > Link: https://github.com/acpica/acpica/commit/b5e6bcf6 > Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx> > Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx> > Signed-off-by: Erik Kaneda <erik.kaneda@xxxxxxxxx> Erik, what's the plan regarding this patch and the other ACPICA change requisite for this series? Are they going to be part of the next ACPICA release and am I going to receive them the usual way? > --- > include/acpi/actbl2.h | 30 ++++++++++++++++++++++++++++++ > 1 file changed, 30 insertions(+) > > diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h > index d6478c430c99..83a9d8b68e3a 100644 > --- a/include/acpi/actbl2.h > +++ b/include/acpi/actbl2.h > @@ -43,6 +43,7 @@ > #define ACPI_SIG_SDEI "SDEI" /* Software Delegated Exception Interface Table */ > #define ACPI_SIG_SDEV "SDEV" /* Secure Devices table */ > #define ACPI_SIG_NHLT "NHLT" /* Non-HDAudio Link Table */ > +#define ACPI_SIG_SVKL "SVKL" /* Storage Volume Key Location Table */ > > /* > * All tables must be byte-packed to match the ACPI specification, since > @@ -1713,6 +1714,35 @@ struct acpi_sdev_pcie_path { > u8 function; > }; > > +/******************************************************************************* > + * > + * SVKL - Storage Volume Key Location Table (ACPI 6.4) > + * Version 1 > + * > + ******************************************************************************/ > + > +struct acpi_table_svkl { > + struct acpi_table_header header; /* Common ACPI table header */ > + u32 count; > +}; > + > +struct acpi_svkl_header { > + u16 type; > + u16 format; > + u32 size; > + u64 address; > +}; > + > +enum acpi_svkl_type { > + ACPI_SVKL_TYPE_MAIN_STORAGE = 0, > + ACPI_SVKL_TYPE_RESERVED = 1 /* 1 and greater are reserved */ > +}; > + > +enum acpi_svkl_format { > + ACPI_SVKL_FORMAT_RAW_BINARY = 0, > + ACPI_SVKL_FORMAT_RESERVED = 1 /* 1 and greater are reserved */ > +}; > + > /* Reset to default packing */ > > #pragma pack() > -- > 2.25.1 >
