linux-kernel - Re: [PATCH v8 1/3] riscv: Introduce CONFIG

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Date:   Fri, 19 May 2023 14:55:28 -0700 (PDT)
From:   Palmer Dabbelt <palmer@...belt.com>
To:     schwab@...ux-m68k.org
CC:     alex@...ti.fr, alexghiti@...osinc.com, mpe@...erman.id.au,
        npiggin@...il.com, christophe.leroy@...roup.eu,
        Paul Walmsley <paul.walmsley@...ive.com>,
        aou@...s.berkeley.edu, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject:     Re: [PATCH v8 1/3] riscv: Introduce CONFIG_RELOCATABLE

On Fri, 19 May 2023 14:48:59 PDT (-0700), schwab@...ux-m68k.org wrote:
> On Mai 19 2023, Alexandre Ghiti wrote:
>
>> I have tested the following patch successfully, can you give it a try
>> while I make sure this is the only place I forgot to add the -fno-pie
>> flag?
>>
>> diff --git a/arch/riscv/kernel/Makefile b/arch/riscv/kernel/Makefile
>> index fbdccc21418a..153864e4f399 100644
>> --- a/arch/riscv/kernel/Makefile
>> +++ b/arch/riscv/kernel/Makefile
>> @@ -23,6 +23,10 @@ ifdef CONFIG_FTRACE
>>  CFLAGS_REMOVE_alternative.o = $(CC_FLAGS_FTRACE)
>>  CFLAGS_REMOVE_cpufeature.o = $(CC_FLAGS_FTRACE)
>>  endif
>> +ifdef CONFIG_RELOCATABLE
>> +CFLAGS_alternative.o += -fno-pie
>> +CFLAGS_cpufeature.o += -fno-pie
>> +endif
>>  ifdef CONFIG_KASAN
>>  KASAN_SANITIZE_alternative.o := n
>>  KASAN_SANITIZE_cpufeature.o := n
>
> I can confirm that this fixes the crash.

Thanks.  Alex: can you send a patch?