linux-kernel - Re: [PATCH v1 3/3] selftests/mm: remove arm64 nr_hugepages setup for va_high_addr

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Message-ID: <8b67305a-9057-49fd-92b2-343d237890cb@redhat.com>
Date: Mon, 8 Dec 2025 10:48:50 -0500
From: Luiz Capitulino <luizcap@...hat.com>
To: Chunyu Hu <chuhu@...hat.com>, akpm@...ux-foundation.org,
 david@...nel.org, shuah@...nel.org, linux-mm@...ck.org
Cc: linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
 lorenzo.stoakes@...cle.com, Liam.Howlett@...cle.com, vbabka@...e.cz,
 rppt@...nel.org, surenb@...gle.com, mhocko@...e.com
Subject: Re: [PATCH v1 3/3] selftests/mm: remove arm64 nr_hugepages setup for
 va_high_addr_switch test

On 2025-12-07 07:22, Chunyu Hu wrote:
> arm64 and x86_64 has the same nr_hugepages requriement for running the
> va_high_addr_switch test. Since commit d9d957bd7b61 ("selftests/mm: alloc
> hugepages in va_high_addr_switch test"), the setup can be done in
> va_high_addr_switch.sh. So remove the duplicated setup.
> 
> CC: Luiz Capitulino <luizcap@...hat.com>
> Signed-off-by: Chunyu Hu <chuhu@...hat.com>

Reviewed-by: Luiz Capitulino <luizcap@...hat.com>

> ---
>   tools/testing/selftests/mm/run_vmtests.sh | 8 --------
>   1 file changed, 8 deletions(-)
> 
> diff --git a/tools/testing/selftests/mm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh
> index d9173f2312b7..2dadbfc6e535 100755
> --- a/tools/testing/selftests/mm/run_vmtests.sh
> +++ b/tools/testing/selftests/mm/run_vmtests.sh
> @@ -412,15 +412,7 @@ if [ $VADDR64 -ne 0 ]; then
>   	fi
>   
>   	# va high address boundary switch test
> -	ARCH_ARM64="arm64"
> -	prev_nr_hugepages=$(cat /proc/sys/vm/nr_hugepages)
> -	if [ "$ARCH" == "$ARCH_ARM64" ]; then
> -		echo 6 > /proc/sys/vm/nr_hugepages
> -	fi
>   	CATEGORY="hugevm" run_test bash ./va_high_addr_switch.sh
> -	if [ "$ARCH" == "$ARCH_ARM64" ]; then
> -		echo $prev_nr_hugepages > /proc/sys/vm/nr_hugepages
> -	fi
>   fi # VADDR64
>   
>   # vmalloc stability smoke test