linux-kernel - Re: [PATCH 0/6] trivial cleanup for iommu/vt-d

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Date:	Fri, 4 Jul 2014 17:29:24 +0800
From:	Yijing Wang <wangyijing@...wei.com>
To:	Joerg Roedel <joro@...tes.org>
CC:	David Woodhouse <dwmw2@...radead.org>,
	<iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/6] trivial cleanup for iommu/vt-d

On 2014/7/4 17:22, Joerg Roedel wrote:
> On Tue, May 20, 2014 at 08:37:46PM +0800, Yijing Wang wrote:
>>
>> Yijing Wang (6):
>>   iommu/vt-d: Use list_for_each_safe() to simplify code
>>   iommu/vt-d: move up no_iommu and dmar_disabled check
>>   iommu/vt-d: clear the redundant assignment in dmar_enable_qi
>>   iommu/vt-d: clear the redundant assignment for domain->nid
>>   iommu/vt-d: use inline function dma_pte_superpage instead of macros
>>   iommu/vt-d: fix reference count in iommu_prepare_isa
> 
> Applied patches 1, 3, 4, 5 and 6, thanks. Also added another patch
> on-top, see below.

Thanks a lot!

Yijing.

> 
>>>From 77c704bebc5d023ece7af32ea18bc3508cdb0007 Mon Sep 17 00:00:00 2001
> From: Joerg Roedel <jroedel@...e.de>
> Date: Fri, 4 Jul 2014 11:19:10 +0200
> Subject: [PATCH] iommu/vt-d: Don't use magic number in dma_pte_superpage
> 
> Use the already defined DMA_PTE_LARGE_PAGE for testing
> instead of hardcoding the value again.
> 
> Signed-off-by: Joerg Roedel <jroedel@...e.de>
> ---
>  drivers/iommu/intel-iommu.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
> index 9b9f28e..5d86e93 100644
> --- a/drivers/iommu/intel-iommu.c
> +++ b/drivers/iommu/intel-iommu.c
> @@ -304,7 +304,7 @@ static inline bool dma_pte_present(struct dma_pte *pte)
>  
>  static inline bool dma_pte_superpage(struct dma_pte *pte)
>  {
> -	return (pte->val & (1 << 7));
> +	return (pte->val & DMA_PTE_LARGE_PAGE);
>  }
>  
>  static inline int first_pte_in_page(struct dma_pte *pte)
> 


-- 
Thanks!
Yijing

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