• Khalid Aziz's avatar
    sparc64: Add auxiliary vectors to report platform ADI properties · c6202ca7
    Khalid Aziz authored
    ADI feature on M7 and newer processors has three important properties
    relevant to userspace apps using ADI capabilities - (1) Size of block of
    memory an ADI version tag applies to, (2) Number of uppermost bits in
    virtual address used to encode ADI tag, and (3) The value M7 processor
    will force the ADI tags to if it detects uncorrectable error in an ADI
    tagged cacheline. Kernel can retrieve these properties for a platform
    through machine description provided by the firmware. This patch adds
    code to retrieve these properties and report them to userspace through
    auxiliary vectors.
    Signed-off-by: default avatarKhalid Aziz <khalid.aziz@oracle.com>
    Cc: Khalid Aziz <khalid@gonehiking.org>
    Reviewed-by: default avatarAnthony Yznaga <anthony.yznaga@oracle.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    c6202ca7
elf_64.h 6.69 KB