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Message-ID: <27f29bb6-f82a-eefe-4774-0d2d1872482a@arm.com>
Date: Tue, 14 Jun 2022 07:50:34 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: kernel test robot <lkp@...el.com>, linux-mm@...ck.org
Cc: kbuild-all@...ts.01.org, Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 2/2] mm/mmap: Drop generic protection_map[] array
On 6/13/22 15:01, kernel test robot wrote:
> Hi Anshuman,
>
> Thank you for the patch! Yet something to improve:
>
> [auto build test ERROR on akpm-mm/mm-everything]
>
> url: https://github.com/intel-lab-lkp/linux/commits/Anshuman-Khandual/mm-mmap-Drop-__SXXX-__PXXX-macros-from-across-platforms/20220613-133456
> base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> config: riscv-randconfig-r042-20220613 (https://download.01.org/0day-ci/archive/20220613/202206131716.tDWk9rLs-lkp@intel.com/config)
> compiler: riscv64-linux-gcc (GCC) 11.3.0
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # https://github.com/intel-lab-lkp/linux/commit/696f81b49f7b6316f652d795da4c0008efef4487
> git remote add linux-review https://github.com/intel-lab-lkp/linux
> git fetch --no-tags linux-review Anshuman-Khandual/mm-mmap-Drop-__SXXX-__PXXX-macros-from-across-platforms/20220613-133456
> git checkout 696f81b49f7b6316f652d795da4c0008efef4487
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/mm/
>
> If you fix the issue, kindly add following tag where applicable
> Reported-by: kernel test robot <lkp@...el.com>
>
> All errors (new ones prefixed by >>):
>
>>> arch/riscv/mm/init.c:1224:59: error: 'PAGE_NONE' undeclared here (not in a function); did you mean 'SIGEV_NONE'?
> 1224 | [VM_NONE] = PAGE_NONE,
> | ^~~~~~~~~
> | SIGEV_NONE
>>> arch/riscv/mm/init.c:1225:59: error: 'PAGE_READ' undeclared here (not in a function); did you mean 'MAY_READ'?
> 1225 | [VM_READ] = PAGE_READ,
> | ^~~~~~~~~
> | MAY_READ
>>> arch/riscv/mm/init.c:1226:59: error: 'PAGE_COPY' undeclared here (not in a function)
> 1226 | [VM_WRITE] = PAGE_COPY,
> | ^~~~~~~~~
>>> arch/riscv/mm/init.c:1228:59: error: 'PAGE_EXEC' undeclared here (not in a function); did you mean 'TASK_EXEC'?
> 1228 | [VM_EXEC] = PAGE_EXEC,
> | ^~~~~~~~~
> | TASK_EXEC
>>> arch/riscv/mm/init.c:1229:59: error: 'PAGE_READ_EXEC' undeclared here (not in a function); did you mean 'PAGE_KERNEL_EXEC'?
> 1229 | [VM_EXEC | VM_READ] = PAGE_READ_EXEC,
> | ^~~~~~~~~~~~~~
> | PAGE_KERNEL_EXEC
>>> arch/riscv/mm/init.c:1230:59: error: 'PAGE_COPY_EXEC' undeclared here (not in a function); did you mean 'PAGE_KERNEL_EXEC'?
> 1230 | [VM_EXEC | VM_WRITE] = PAGE_COPY_EXEC,
> | ^~~~~~~~~~~~~~
> | PAGE_KERNEL_EXEC
>>> arch/riscv/mm/init.c:1231:59: error: 'PAGE_COPY_READ_EXEC' undeclared here (not in a function)
> 1231 | [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_READ_EXEC,
> | ^~~~~~~~~~~~~~~~~~~
>>> arch/riscv/mm/init.c:1238:59: error: 'PAGE_SHARED_EXEC' undeclared here (not in a function); did you mean 'PAGE_SHARED'?
> 1238 | [VM_SHARED | VM_EXEC | VM_WRITE] = PAGE_SHARED_EXEC,
> | ^~~~~~~~~~~~~~~~
> | PAGE_SHARED
>
>
> vim +1224 arch/riscv/mm/init.c
>
> 1222
> 1223 pgprot_t protection_map[16] __ro_after_init = {
>> 1224 [VM_NONE] = PAGE_NONE,
>> 1225 [VM_READ] = PAGE_READ,
>> 1226 [VM_WRITE] = PAGE_COPY,
> 1227 [VM_WRITE | VM_READ] = PAGE_COPY,
>> 1228 [VM_EXEC] = PAGE_EXEC,
>> 1229 [VM_EXEC | VM_READ] = PAGE_READ_EXEC,
>> 1230 [VM_EXEC | VM_WRITE] = PAGE_COPY_EXEC,
>> 1231 [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_READ_EXEC,
> 1232 [VM_SHARED] = PAGE_NONE,
> 1233 [VM_SHARED | VM_READ] = PAGE_READ,
> 1234 [VM_SHARED | VM_WRITE] = PAGE_SHARED,
> 1235 [VM_SHARED | VM_WRITE | VM_READ] = PAGE_SHARED,
> 1236 [VM_SHARED | VM_EXEC] = PAGE_EXEC,
> 1237 [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READ_EXEC,
>> 1238 [VM_SHARED | VM_EXEC | VM_WRITE] = PAGE_SHARED_EXEC,
>
PAGE_XXXX[_YYYY] symbols on riscv are wrapped around with CONFIG_MMU, just
moving protection_map[] to appropriate place with CONFIG_MMU assert solves
this build problem.
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 5e4ed43f0d79..84ee476ba4a4 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -288,6 +288,25 @@ static pmd_t __maybe_unused early_dtb_pmd[PTRS_PER_PMD] __initdata __aligned(PAG
#define early_pg_dir ((pgd_t *)XIP_FIXUP(early_pg_dir))
#endif /* CONFIG_XIP_KERNEL */
+pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READ,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_EXEC] = PAGE_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READ_EXEC,
+ [VM_EXEC | VM_WRITE] = PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_READ_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READ,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ] = PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READ_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE] = PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+
void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot)
{
unsigned long addr = __fix_to_virt(idx);
@@ -1219,22 +1238,3 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
return vmemmap_populate_basepages(start, end, node, NULL);
}
#endif
-
-pgprot_t protection_map[16] __ro_after_init = {
- [VM_NONE] = PAGE_NONE,
- [VM_READ] = PAGE_READ,
- [VM_WRITE] = PAGE_COPY,
- [VM_WRITE | VM_READ] = PAGE_COPY,
- [VM_EXEC] = PAGE_EXEC,
- [VM_EXEC | VM_READ] = PAGE_READ_EXEC,
- [VM_EXEC | VM_WRITE] = PAGE_COPY_EXEC,
- [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_READ_EXEC,
- [VM_SHARED] = PAGE_NONE,
- [VM_SHARED | VM_READ] = PAGE_READ,
- [VM_SHARED | VM_WRITE] = PAGE_SHARED,
- [VM_SHARED | VM_WRITE | VM_READ] = PAGE_SHARED,
- [VM_SHARED | VM_EXEC] = PAGE_EXEC,
- [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READ_EXEC,
- [VM_SHARED | VM_EXEC | VM_WRITE] = PAGE_SHARED_EXEC,
- [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
-};
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