From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Jason Yan <yanaijie@huawei.com>,
mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org,
diana.craciun@nxp.com, benh@kernel.crashing.org,
paulus@samba.org, npiggin@gmail.com, keescook@chromium.org,
kernel-hardening@lists.openwall.com, oss@buserror.net
Cc: linux-kernel@vger.kernel.org, zhaohongjiang@huawei.com
Subject: Re: [PATCH v3 3/6] powerpc/fsl_booke/64: implement KASLR for fsl_booke64
Date: Wed, 26 Feb 2020 06:10:22 +0100 [thread overview]
Message-ID: <ceeced29-c6b9-60c9-41b0-3cf537bbf62c@c-s.fr> (raw)
In-Reply-To: <d3647cce-ece3-d302-f541-b02b1f2b5e9e@huawei.com>
Le 26/02/2020 à 04:33, Jason Yan a écrit :
>
>
> 在 2020/2/26 10:40, Jason Yan 写道:
>>
>>
>> 在 2020/2/20 21:48, Christophe Leroy 写道:
>>>
>>>
>>> Le 06/02/2020 à 03:58, Jason Yan a écrit :
> Hi Christophe,
>
> When using a standard C if/else, all code compiled for PPC32 and PPC64,
> but this will bring some build error because not all variables both
> defined for PPC32 and PPC64.
>
> [yanaijie@138 linux]$ sh ppc64build.sh
> CALL scripts/atomic/check-atomics.sh
> CALL scripts/checksyscalls.sh
> CHK include/generated/compile.h
> CC arch/powerpc/mm/nohash/kaslr_booke.o
> arch/powerpc/mm/nohash/kaslr_booke.c: In function 'kaslr_choose_location':
> arch/powerpc/mm/nohash/kaslr_booke.c:341:30: error:
> 'CONFIG_LOWMEM_CAM_NUM' undeclared (first use in this function); did you
> mean 'CONFIG_FLATMEM_MANUAL'?
> ram = map_mem_in_cams(ram, CONFIG_LOWMEM_CAM_NUM, true);
> ^~~~~~~~~~~~~~~~~~~~~
> CONFIG_FLATMEM_MANUAL
This one has to remain inside an #ifdef. That's the only one that has to
remain.
> arch/powerpc/mm/nohash/kaslr_booke.c:341:30: note: each undeclared
> identifier is reported only once for each function it appears in
> arch/powerpc/mm/nohash/kaslr_booke.c: In function 'kaslr_early_init':
> arch/powerpc/mm/nohash/kaslr_booke.c:404:3: error: 'is_second_reloc'
In mmu_decl.h, put the declaration outside the #ifdef CONFIG_PPC32
> undeclared (first use in this function); did you mean '__cond_lock'?
> is_second_reloc = 1;
> ^~~~~~~~~~~~~~~
> __cond_lock
> arch/powerpc/mm/nohash/kaslr_booke.c:411:4: error: implicit declaration
> of function 'create_kaslr_tlb_entry'; did you mean 'reloc_kernel_entry'?
Same, put the declaration outside of the #ifdef
> [-Werror=implicit-function-declaration]
> create_kaslr_tlb_entry(1, tlb_virt, tlb_phys);
> ^~~~~~~~~~~~~~~~~~~~~~
> reloc_kernel_entry
> cc1: all warnings being treated as errors
> make[3]: *** [scripts/Makefile.build:268:
> arch/powerpc/mm/nohash/kaslr_booke.o] Error 1
> make[2]: *** [scripts/Makefile.build:505: arch/powerpc/mm/nohash] Error 2
> make[1]: *** [scripts/Makefile.build:505: arch/powerpc/mm] Error 2
> make: *** [Makefile:1681: arch/powerpc] Error 2
See the patch I sent you. It builds ok for me.
Christophe
next prev parent reply other threads:[~2020-02-26 5:10 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-06 2:58 [PATCH v3 0/6] implement KASLR for powerpc/fsl_booke/64 Jason Yan
2020-02-06 2:58 ` [PATCH v3 1/6] powerpc/fsl_booke/kaslr: refactor kaslr_legal_offset() and kaslr_early_init() Jason Yan
2020-02-20 13:40 ` Christophe Leroy
2020-02-26 2:11 ` Jason Yan
2020-02-06 2:58 ` [PATCH v3 2/6] powerpc/fsl_booke/64: introduce reloc_kernel_entry() helper Jason Yan
2020-02-20 13:41 ` Christophe Leroy
2020-02-06 2:58 ` [PATCH v3 3/6] powerpc/fsl_booke/64: implement KASLR for fsl_booke64 Jason Yan
2020-02-20 13:48 ` Christophe Leroy
2020-02-26 2:40 ` Jason Yan
2020-02-26 3:33 ` Jason Yan
2020-02-26 5:04 ` [RFC PATCH] Use IS_ENABLED() instead of #ifdefs Christophe Leroy
2020-02-26 6:26 ` Jason Yan
2020-02-26 5:10 ` Christophe Leroy [this message]
2020-02-26 5:08 ` [PATCH v3 3/6] powerpc/fsl_booke/64: implement KASLR for fsl_booke64 Christophe Leroy
2020-03-04 21:44 ` Scott Wood
2020-03-05 2:32 ` Jason Yan
2020-02-06 2:58 ` [PATCH v3 4/6] powerpc/fsl_booke/64: do not clear the BSS for the second pass Jason Yan
2020-03-04 21:49 ` Scott Wood
2020-03-05 3:14 ` Jason Yan
2020-02-06 2:58 ` [PATCH v3 5/6] powerpc/fsl_booke/64: clear the original kernel if randomized Jason Yan
2020-02-20 13:49 ` Christophe Leroy
2020-02-26 2:44 ` Jason Yan
2020-03-04 21:53 ` Scott Wood
2020-03-05 3:20 ` Jason Yan
2020-02-06 2:58 ` [PATCH v3 6/6] powerpc/fsl_booke/kaslr: rename kaslr-booke32.rst to kaslr-booke.rst and add 64bit part Jason Yan
2020-02-20 13:50 ` Christophe Leroy
2020-02-26 2:46 ` Jason Yan
2020-02-13 3:00 ` [PATCH v3 0/6] implement KASLR for powerpc/fsl_booke/64 Jason Yan
2020-02-20 3:33 ` Jason Yan
2020-02-26 7:16 ` Daniel Axtens
2020-02-26 8:18 ` Jason Yan
2020-02-26 11:41 ` Daniel Axtens
2020-02-27 1:55 ` Jason Yan
2020-02-28 5:53 ` Scott Wood
2020-02-28 6:47 ` Jason Yan
2020-02-29 4:28 ` Scott Wood
2020-02-29 7:27 ` Jason Yan
2020-02-29 22:54 ` Scott Wood
2020-03-02 2:17 ` Jason Yan
2020-03-02 3:24 ` Scott Wood
2020-03-02 7:12 ` Jason Yan
2020-03-02 8:47 ` Scott Wood
2020-03-02 9:37 ` Jason Yan
2020-03-04 21:21 ` Scott Wood
2020-03-05 3:22 ` Jason Yan
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