linux-kernel - Re: Build regressions/improvements in v6.0-rc5

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Message-ID: <812d649c-380b-8a7e-1584-891c7e643656@gmx.de>
Date:   Tue, 20 Sep 2022 23:07:46 +0200
From:   Helge Deller <deller@....de>
To:     Randy Dunlap <rdunlap@...radead.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-kernel@...r.kernel.org, Michael Ellerman <mpe@...erman.id.au>
Cc:     linux-parisc@...r.kernel.org
Subject: Re: Build regressions/improvements in v6.0-rc5

On 9/20/22 22:29, Randy Dunlap wrote:
>
>
> On 9/20/22 13:23, Helge Deller wrote:
>> On 9/12/22 11:22, Geert Uytterhoeven wrote:
>>> On Mon, 12 Sep 2022, Geert Uytterhoeven wrote:
>>>> JFYI, when comparing v6.0-rc5[1] to v6.0-rc4[3], the summaries are:
>>>>   - build errors: +16/-1
>>>
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: .cfi_endproc without corresponding .cfi_startproc:  => 32
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: bad or irreducible absolute expression:  => 16
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: junk at end of line, first unrecognized character is `:':  => 16
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: no such instruction: `be 0x100(%sr2,%r0)':  => 29
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: no such instruction: `ldi 0,%r20':  => 30
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/restart_syscall.S: Error: no such instruction: `ldw 0(%sp),%r31':  => 26
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: no such instruction: `ble 0x100(%sr2,%r0)':  => 46, 51
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: no such instruction: `ldi 0,%r25':  => 44
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: no such instruction: `ldi 1,%r25':  => 49
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: no such instruction: `ldi 173,%r20':  => 45, 50
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.callinfo':  => 40
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.entry':  => 41
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.exit':  => 54
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.proc':  => 39
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.procend':  => 55
>>>     + /kisskb/src/arch/parisc/kernel/vdso32/sigtramp.S: Error: unknown pseudo-op: `.stringz':  => 76
>>>
>>> parisc-gcc8/generic-32bit_defconfig
>>>
>>>> [1] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/80e78fcce86de0288793a0ef0f6acf37656ee4cf/ (all 135 configs)
>>>> [3] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/7e18e42e4b280c85b76967a9106a13ca61c16179/ (all 135 configs)
>>
>> I see those errors on the kiss website, but I'm unable to reproduce them.
>> Downloaded that .config, used same compiler (from https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.5.0/)....
>> Not sure how to get this fixed.
>> If someone has an idea or can reproduce, please let me know.
>
> Hi,
> I can reproduce it using the (x86_64 hosted) crosstool gcc-12.1.0 from kernel.org that Arnd builds/provides.
> https://mirrors.edge.kernel.org/pub/tools/crosstool/

Ah....
Building with "make  ARCH=parisc  CROSS_COMPILE=/some/path/nolibc/hppa-linux/bin/hppa-linux-"
uses this CROSS_COMPILE prefix for compiling the .c files, but not for the .S files.
So, you will end up with the default hppa-linux-gcc installed on the system, not the one provided
by CROSS_COMPILE.

Helge