linux-kernel - [PATCH] AMD IOMMU: use iommu_device_max

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 29 Sep 2008 00:06:36 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	joerg.roedel@....com
Cc:	mingo@...e.hu, linux-kernel@...r.kernel.org
Subject: [PATCH] AMD IOMMU: use iommu_device_max_index

This is against tip/iommu.

=
From: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Subject: [PATCH] AMD IOMMU: use iommu_device_max_index

AMD IOMMU can use iommu_device_max_index() instead of the homegrown
function.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
---
 arch/x86/kernel/amd_iommu.c |   10 +++-------
 1 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 2028810..34e4d11 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -480,10 +480,6 @@ static int init_unity_mappings_for_device(struct dma_ops_domain *dma_dom,
  * efficient allocator.
  *
  ****************************************************************************/
-static unsigned long dma_mask_to_pages(unsigned long mask)
-{
-	return PAGE_ALIGN(mask) >> PAGE_SHIFT;
-}
 
 /*
  * The address allocator core function.
@@ -496,14 +492,14 @@ static unsigned long dma_ops_alloc_addresses(struct device *dev,
 					     unsigned long align_mask,
 					     u64 dma_mask)
 {
-	unsigned long limit = dma_mask_to_pages(dma_mask);
+	unsigned long limit;
 	unsigned long address;
-	unsigned long size = dom->aperture_size >> PAGE_SHIFT;
 	unsigned long boundary_size;
 
 	boundary_size = ALIGN(dma_get_seg_boundary(dev) + 1,
 			PAGE_SIZE) >> PAGE_SHIFT;
-	limit = limit < size ? limit : size;
+	limit = iommu_device_max_index(dom->aperture_size >> PAGE_SHIFT, 0,
+				       dma_mask >> PAGE_SHIFT);
 
 	if (dom->next_bit >= limit) {
 		dom->next_bit = 0;
-- 
1.5.4.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/