• Maciej W. Rozycki's avatar
    DEC: Limit PMAX memory probing to R3k systems · 244eae91
    Maciej W. Rozycki authored
    Recent tightening of the opcode table in binutils so as to consistently
    disallow the assembly or disassembly of CP0 instructions not supported
    by the processor architecture chosen has caused a regression like below:
    
    arch/mips/dec/prom/locore.S: Assembler messages:
    arch/mips/dec/prom/locore.S:29: Error: opcode not supported on this processor: r4600 (mips3) `rfe'
    
    in a piece of code used to probe for memory with PMAX DECstation models,
    which have non-REX firmware.  Those computers always have an R2000 CPU
    and consequently the exception handler used in memory probing uses the
    RFE instruction, which those processors use.
    
    While adding 64-bit support this code was correctly excluded for 64-bit
    configurations, however it should have also been excluded for irrelevant
    32-bit configurations.  Do this now then, and only enable PMAX memory
    probing for R3k systems.
    Reported-by: default avatarJan-Benedict Glaw <jbglaw@lug-owl.de>
    Reported-by: default avatarSudip Mukherjee <sudipm.mukherjee@gmail.com>
    Signed-off-by: default avatarMaciej W. Rozycki <macro@orcam.me.uk>
    Fixes: 1da177e4 ("Linux-2.6.12-rc2")
    Cc: stable@vger.kernel.org # v2.6.12+
    Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
    244eae91
Makefile 215 Bytes