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  • Grant Grundler's avatar
    [PARISC] Fix copy_user_page_asm to NOT access past end of page · 37318a3c
    Grant Grundler authored
    
    
    2.6.12-rc2-pa3 fix copy_user_page_asm to NOT access past end of page.
    
    My bad. /o\
    Lamont confirmed that instructions following a conditional
    branch are *alway* executed regardless if the branch is taken or not.
    Unless they are nullified (which was missing in this case).
    
    He also noted:
    Conditional branches nullify on forward taken branch, and on
    non-taken backward branch. Note that .+4 is a backwards branch.
    
    This makes alot more sense than the giberish in the PA20 arch book.
    
    Compiles and boots on both 64-bit (a500) and 32-bit (j6k).
    
    Signed-off-by: default avatarGrant Grundler <grundler@parisc-linux.org>
    
    Signed-off-by: default avatarKyle McMartin <kyle@parisc-linux.org>
    37318a3c