linux-kernel - Re: [PATCH v2 2/2] arm64: tlb: Use the TLBI RANGE feature in arm64

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Message-ID: <cee60718-ced2-069f-8dad-48941c6fc09b@huawei.com>
Date:   Mon, 13 Jul 2020 22:39:00 +0800
From:   Zhenyu Ye <yezhenyu2@...wei.com>
To:     Jon Hunter <jonathanh@...dia.com>, <catalin.marinas@....com>,
        <will@...nel.org>, <suzuki.poulose@....com>, <maz@...nel.org>,
        <steven.price@....com>, <guohanjun@...wei.com>, <olof@...om.net>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-arch@...r.kernel.org>,
        <linux-mm@...ck.org>, <arm@...nel.org>, <xiexiangyou@...wei.com>,
        <prime.zeng@...ilicon.com>, <zhangshaokun@...ilicon.com>,
        <kuhn.chenqun@...wei.com>,
        linux-tegra <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] arm64: tlb: Use the TLBI RANGE feature in arm64

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