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Subject: Re: [PATCH 28/28] s390: use __vmalloc_node in stack_alloc
To:     Christoph Hellwig <hch@lst.de>,
        Andrew Morton <akpm@linux-foundation.org>,
        "K. Y. Srinivasan" <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        Stephen Hemminger <sthemmin@microsoft.com>,
        Wei Liu <wei.liu@kernel.org>, x86@kernel.org,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Laura Abbott <labbott@redhat.com>,
        Sumit Semwal <sumit.semwal@linaro.org>,
        Sakari Ailus <sakari.ailus@linux.intel.com>,
        Minchan Kim <minchan@kernel.org>,
        Nitin Gupta <ngupta@vflare.org>
Cc:     Robin Murphy <robin.murphy@arm.com>,
        Christophe Leroy <christophe.leroy@c-s.fr>,
        Peter Zijlstra <peterz@infradead.org>,
        linuxppc-dev@lists.ozlabs.org, linux-hyperv@vger.kernel.org,
        dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org,
        linux-arch@vger.kernel.org, linux-mm@kvack.org,
        iommu@lists.linux-foundation.org,
        linux-arm-kernel@lists.infradead.org, linux-s390@vger.kernel.org,
        bpf@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20200408115926.1467567-1-hch@lst.de>
 <20200408115926.1467567-29-hch@lst.de>
From:   Christian Borntraeger <borntraeger@de.ibm.com>
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Date:   Wed, 8 Apr 2020 15:44:28 +0200
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On 08.04.20 13:59, Christoph Hellwig wrote:
> stack_alloc can use a slightly higher level vmalloc function.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>  arch/s390/kernel/setup.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
> index 36445dd40fdb..0f0b140b5558 100644
> --- a/arch/s390/kernel/setup.c
> +++ b/arch/s390/kernel/setup.c
> @@ -305,12 +305,9 @@ void *restart_stack __section(.data);
>  unsigned long stack_alloc(void)
>  {
>  #ifdef CONFIG_VMAP_STACK
> -	return (unsigned long)
> -		__vmalloc_node_range(THREAD_SIZE, THREAD_SIZE,
> -				     VMALLOC_START, VMALLOC_END,
> -				     THREADINFO_GFP,
> -				     PAGE_KERNEL, 0, NUMA_NO_NODE,
> -				     __builtin_return_address(0));
> +	return (unsigned long)__vmalloc_node(THREAD_SIZE, THREAD_SIZE,
> +			THREADINFO_GFP, NUMA_NO_NODE,
> +			__builtin_return_address(0));

Looks sane.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>


>  #else
>  	return __get_free_pages(GFP_KERNEL, THREAD_SIZE_ORDER);
>  #endif
>