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    SubjectRe: [PATCH v2 2/2] arm64: tlb: Use the TLBI RANGE feature in arm64
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    Hi Jon,

    On 2020/7/13 22:27, Jon Hunter wrote:
    > After this change I am seeing the following build errors ...
    >
    > /tmp/cckzq3FT.s: Assembler messages:
    > /tmp/cckzq3FT.s:854: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x7'
    > /tmp/cckzq3FT.s:870: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x7'
    > /tmp/cckzq3FT.s:1095: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x7'
    > /tmp/cckzq3FT.s:1111: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x7'
    > /tmp/cckzq3FT.s:1964: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x7'
    > /tmp/cckzq3FT.s:1980: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x7'
    > /tmp/cckzq3FT.s:2286: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x7'
    > /tmp/cckzq3FT.s:2302: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x7'
    > /tmp/cckzq3FT.s:4833: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x6'
    > /tmp/cckzq3FT.s:4849: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x6'
    > /tmp/cckzq3FT.s:5090: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x6'
    > /tmp/cckzq3FT.s:5106: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x6'
    > /tmp/cckzq3FT.s:874: Error: attempt to move .org backwards
    > /tmp/cckzq3FT.s:1115: Error: attempt to move .org backwards
    > /tmp/cckzq3FT.s:1984: Error: attempt to move .org backwards
    > /tmp/cckzq3FT.s:2306: Error: attempt to move .org backwards
    > /tmp/cckzq3FT.s:4853: Error: attempt to move .org backwards
    > /tmp/cckzq3FT.s:5110: Error: attempt to move .org backwards
    > scripts/Makefile.build:280: recipe for target 'arch/arm64/mm/hugetlbpage.o' failed
    > make[3]: *** [arch/arm64/mm/hugetlbpage.o] Error 1
    > scripts/Makefile.build:497: recipe for target 'arch/arm64/mm' failed
    > make[2]: *** [arch/arm64/mm] Error 2
    >
    > Cheers
    > Jon
    >

    The code must be built with binutils >= 2.30.
    Maybe I should add a check on whether binutils supports ARMv8.4-a instructions...

    Thanks,
    Zhenyu

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