• Stas Sergeev's avatar
    x86: minor cleanup in the espfix code · bda3a897
    Stas Sergeev authored
    Impact: Cleanup
    
    Checkin be44d2aa eliminates the use of
    a 16-bit stack for espfix.  However, at least one instruction remained
    that only operated on the low 16 bits of %esp.
    
    This is not a bug per se because the kernel stack is always an aligned
    4K or 8K block.  Therefore it cannot cross 64K boundaries; this code,
    in fact, relies strictly on that fact.
    
    However, it's a lot cleaner (and, for that matter, smaller) to operate
    on the entire 32-bit register.
    Signed-off-by: default avatarStas Sergeev <stsp@aknet.ru>
    CC: Zachary Amsden <zach@vmware.com>
    CC: Chuck Ebbert <cebbert@redhat.com>
    Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
    bda3a897
entry_32.S 30.9 KB