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Subject: Re: [PATCH] mm/pgtable/debug: Fix test validating architecture page
 table helpers
To:     Christophe Leroy <christophe.leroy@c-s.fr>, linux-mm@kvack.org
Cc:     Mark Rutland <mark.rutland@arm.com>, linux-ia64@vger.kernel.org,
        linux-sh@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
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        Michal Hocko <mhocko@kernel.org>,
        Dave Hansen <dave.hansen@intel.com>,
        Paul Mackerras <paulus@samba.org>, sparclinux@vger.kernel.org,
        Thomas Gleixner <tglx@linutronix.de>,
        linux-s390@vger.kernel.org, Jason Gunthorpe <jgg@ziepe.ca>,
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        Matthew Wilcox <willy@infradead.org>,
        Steven Price <Steven.Price@arm.com>,
        Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
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        Kees Cook <keescook@chromium.org>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
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        Mike Rapoport <rppt@linux.vnet.ibm.com>,
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References: <1892b37d1fd9a4ed39e76c4b999b6556077201c0.1568355752.git.christophe.leroy@c-s.fr>
From:   Anshuman Khandual <anshuman.khandual@arm.com>
Message-ID: <cb338e2e-23b1-b8af-811c-57feb6f4e7b4@arm.com>
Date:   Wed, 18 Sep 2019 13:02:22 +0530
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On 09/13/2019 11:53 AM, Christophe Leroy wrote:
> Fix build failure on powerpc.
> 
> Fix preemption imbalance.
> 
> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
> ---
>  mm/arch_pgtable_test.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/mm/arch_pgtable_test.c b/mm/arch_pgtable_test.c
> index 8b4a92756ad8..f2b3c9ec35fa 100644
> --- a/mm/arch_pgtable_test.c
> +++ b/mm/arch_pgtable_test.c
> @@ -24,6 +24,7 @@
>  #include <linux/swap.h>
>  #include <linux/swapops.h>
>  #include <linux/sched/mm.h>
> +#include <linux/highmem.h>
>  #include <asm/pgalloc.h>
>  #include <asm/pgtable.h>
>  
> @@ -400,6 +401,8 @@ static int __init arch_pgtable_tests_init(void)
>  	p4d_clear_tests(p4dp);
>  	pgd_clear_tests(mm, pgdp);
>  
> +	pte_unmap(ptep);
> +
>  	pmd_populate_tests(mm, pmdp, saved_ptep);
>  	pud_populate_tests(mm, pudp, saved_pmdp);
>  	p4d_populate_tests(mm, p4dp, saved_pudp);
> 

Hello Christophe,

I am planning to fold this fix into the current patch and retain your
Signed-off-by. Are you okay with it ?

- Anshuman