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From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
To: xen-devel@lists.xensource.com
Cc: konrad.wilk@oracle.com, Ian.Campbell@citrix.com,
	david.vrabel@citrix.com, linux-kernel@vger.kernel.org,
	Stefano.Stabellini@eu.citrix.com,
	linux-arm-kernel@lists.infradead.org,
	Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: [PATCH v7 2/8] xen/arm: remove outer_*_range call
Date: Mon, 27 Oct 2014 15:09:22 +0000	[thread overview]
Message-ID: <1414422568-19103-2-git-send-email-stefano.stabellini@eu.citrix.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1410261621200.22875@kaball.uk.xensource.com>

Dom0 is not actually capable of issuing outer_inv_range or
outer_clean_range calls.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
---
 arch/arm/xen/mm32.c |    9 ---------
 1 file changed, 9 deletions(-)

diff --git a/arch/arm/xen/mm32.c b/arch/arm/xen/mm32.c
index a5a93fc..6153d61 100644
--- a/arch/arm/xen/mm32.c
+++ b/arch/arm/xen/mm32.c
@@ -61,9 +61,6 @@ static void __xen_dma_page_dev_to_cpu(struct device *hwdev, dma_addr_t handle,
 	/* Cannot use __dma_page_dev_to_cpu because we don't have a
 	 * struct page for handle */
 
-	if (dir != DMA_TO_DEVICE)
-		outer_inv_range(handle, handle + size);
-
 	dma_cache_maint(handle & PAGE_MASK, handle & ~PAGE_MASK, size, dir, dmac_unmap_area);
 }
 
@@ -72,12 +69,6 @@ static void __xen_dma_page_cpu_to_dev(struct device *hwdev, dma_addr_t handle,
 {
 
 	dma_cache_maint(handle & PAGE_MASK, handle & ~PAGE_MASK, size, dir, dmac_map_area);
-
-	if (dir == DMA_FROM_DEVICE) {
-		outer_inv_range(handle, handle + size);
-	} else {
-		outer_clean_range(handle, handle + size);
-	}
 }
 
 void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
-- 
1.7.10.4

  parent reply	other threads:[~2014-10-27 15:09 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-27 15:08 [PATCH v7 0/8] introduce GNTTABOP_cache_flush Stefano Stabellini
2014-10-27 15:09 ` [PATCH v7 1/8] xen/arm: remove handling of XENFEAT_grant_map_identity Stefano Stabellini
2014-10-27 15:09 ` Stefano Stabellini [this message]
2014-10-27 15:09 ` [PATCH v7 3/8] arm64: introduce is_device_dma_coherent Stefano Stabellini
2014-11-03 10:46   ` Stefano Stabellini
2014-11-03 10:57     ` Will Deacon
2014-11-03 11:10       ` Stefano Stabellini
2014-11-04 11:35         ` Grygorii Strashko
2014-11-04 15:00           ` Stefano Stabellini
2014-11-05 16:56         ` Catalin Marinas
2014-11-05 18:15           ` Stefano Stabellini
2014-11-06 10:33             ` Catalin Marinas
2014-11-06 12:22               ` Stefano Stabellini
2014-11-06 13:40                 ` Catalin Marinas
2014-11-07 11:05                 ` Catalin Marinas
2014-11-07 11:11                   ` Catalin Marinas
2014-11-07 14:10                     ` Stefano Stabellini
2014-11-07 14:10                   ` Stefano Stabellini
2014-11-07 16:00                     ` Catalin Marinas
2014-11-07 17:24                       ` Stefano Stabellini
2014-11-07 17:35                         ` Stefano Stabellini
2014-11-07 18:14                           ` Catalin Marinas
2014-11-07 18:45                             ` Stefano Stabellini
2014-11-10 10:16                               ` Catalin Marinas
2014-11-10 12:35                                 ` Stefano Stabellini
2014-11-10 12:41                                   ` Stefano Stabellini
2014-10-27 15:09 ` [PATCH v7 4/8] arm: " Stefano Stabellini
2014-11-03 10:55   ` Stefano Stabellini
2014-10-27 15:09 ` [PATCH v7 5/8] xen/arm: use is_device_dma_coherent Stefano Stabellini
2014-10-27 15:09 ` [PATCH v7 6/8] xen/arm/arm64: merge xen/mm32.c into xen/mm.c Stefano Stabellini
2014-11-07 14:22   ` Catalin Marinas
2014-11-07 15:28     ` Stefano Stabellini
2014-11-07 16:03       ` Catalin Marinas
2014-11-07 16:46         ` Stefano Stabellini
2014-10-27 15:09 ` [PATCH v7 7/8] xen/arm/arm64: introduce xen_arch_need_swiotlb Stefano Stabellini
2014-11-03 10:45   ` Stefano Stabellini
2014-11-03 11:01     ` [Xen-devel] " David Vrabel
2014-11-03 16:04     ` Konrad Rzeszutek Wilk
2014-10-27 15:09 ` [PATCH v7 8/8] xen/arm: introduce GNTTABOP_cache_flush Stefano Stabellini

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