linux-kernel - Re: [PATCH] arm: 9016/2: Make symbol 'tmp_pmd

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Message-ID: <8578f96b-1a86-27a9-86a4-ed97c90b4892@huawei.com>
Date:   Mon, 29 Mar 2021 11:31:51 +0800
From:   Liu Shixin <liushixin2@...wei.com>
To:     Russell King - ARM Linux admin <linux@...linux.org.uk>
CC:     Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Alexander Potapenko <glider@...gle.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        <kasan-dev@...glegroups.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] arm: 9016/2: Make symbol 'tmp_pmd_table' static

I'm sorry for making such a stupid mistake. There was only one patch committed before(5615f69bc209 "ARM: 9016/2: Initialize the mapping of KASan shadow memory"), and I used the same subject by mistake.

Thanks for your correction, I will revise the subject and resend it. How about using "arm: mm: kasan_init" in the subject?


On 2021/3/27 18:20, Russell King - ARM Linux admin wrote:
> Why do you have 9016/2 in the subject line? That's an identifier from
> the patch system which shouldn't be in the subject line.
>
> If you want to refer to something already committed, please do so via
> the sha1 git hash and quote the first line of the commit description
> within ("...") in the body of your commit description.
>
> Thanks.
>
> On Sat, Mar 27, 2021 at 04:30:18PM +0800, Shixin Liu wrote:
>> Symbol 'tmp_pmd_table' is not used outside of kasan_init.c and only used
>> when CONFIG_ARM_LPAE enabled. So marks it static and add it into CONFIG_ARM_LPAE.
>>
>> Signed-off-by: Shixin Liu <liushixin2@...wei.com>
>> ---
>>  arch/arm/mm/kasan_init.c | 4 +++-
>>  1 file changed, 3 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/arm/mm/kasan_init.c b/arch/arm/mm/kasan_init.c
>> index 9c348042a724..3a06d3b51f97 100644
>> --- a/arch/arm/mm/kasan_init.c
>> +++ b/arch/arm/mm/kasan_init.c
>> @@ -27,7 +27,9 @@
>>  
>>  static pgd_t tmp_pgd_table[PTRS_PER_PGD] __initdata __aligned(PGD_SIZE);
>>  
>> -pmd_t tmp_pmd_table[PTRS_PER_PMD] __page_aligned_bss;
>> +#ifdef CONFIG_ARM_LPAE
>> +static pmd_t tmp_pmd_table[PTRS_PER_PMD] __page_aligned_bss;
>> +#endif
>>  
>>  static __init void *kasan_alloc_block(size_t size)
>>  {
>> -- 
>> 2.25.1
>>
>>