linux-kernel - Re: [RFC PULL] remove arch/h8300

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Date:   Mon, 4 Apr 2022 21:01:05 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Max Filippov <jcmvbkbc@...il.com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Christoph Hellwig <hch@...radead.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        "moderated list:H8/300 ARCHITECTURE" 
        <uclinux-h8-devel@...ts.sourceforge.jp>,
        "open list:TENSILICA XTENSA PORT (xtensa)" 
        <linux-xtensa@...ux-xtensa.org>,
        Linux-sh list <linux-sh@...r.kernel.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        Greg Ungerer <gerg@...ux-m68k.org>,
        Damien Le Moal <damien.lemoal@....com>,
        linux-riscv <linux-riscv@...ts.infradead.org>
Subject: Re: [RFC PULL] remove arch/h8300

On Mon, Apr 4, 2022 at 7:57 PM Max Filippov <jcmvbkbc@...il.com> wrote:
>
> Hi Arnd,
>
> On Mon, Apr 4, 2022 at 6:07 AM Arnd Bergmann <arnd@...db.de> wrote:
> > 1. xtensa nommu has does not compile in mainline and as far as I can
> > tell never did
>
> I have a different picture here. If you look at the logs at
>   https://kerneltests.org/builders/qemu-xtensa-master/
>
> there's a line for noMMU config in every one of them:
>   Building xtensa:de212:kc705-nommu:nommu_kc705_defconfig ... running
> ............ passed
>
> Please let me know if you observe any specific build/runtime issues.

This is what I get:

$ make ARCH=xtensa O=build/xtensa nommu_kc705_defconfig vmlinux V=1
....
xtensa-linux-gcc-11.1.0 -DKCONFIG_SEED=
-Wp,-MMD,arch/xtensa/kernel/.head.o.d -nostdinc
-I/git/arm-soc/arch/xtensa/include -I./arch/xtensa/include/generated
-I/git/arm-soc/include -I./include
-I/git/arm-soc/arch/xtensa/include/uapi
-I./arch/xtensa/include/generated/uapi -I/git/arm-soc/include/uapi
-I./include/generated/uapi -include
/git/arm-soc/include/linux/compiler-version.h -include
/git/arm-soc/include/linux/kconfig.h -D__KERNEL__
-I/git/arm-soc/arch/xtensa/variants/de212/include
-I/git/arm-soc/arch/xtensa/platforms/xtfpga/include
-fmacro-prefix-map=/git/arm-soc/= -D__ASSEMBLY__ -fno-PIE -mlongcalls
-mtext-section-literals -Wa,--fatal-warnings -I
/git/arm-soc/arch/xtensa/kernel -I ./arch/xtensa/kernel    -c -o
arch/xtensa/kernel/head.o /git/arm-soc/arch/xtensa/kernel/head.S
/git/arm-soc/arch/xtensa/kernel/head.S: Assembler messages:
/git/arm-soc/arch/xtensa/kernel/head.S:87: Error: invalid register
'atomctl' for 'wsr' instruction

I think there were other errors in the past, but every time I tried
it, the build failed for me.

        Arnd