From: FUJITA Tomonori <tomof@acm.org>
To: linux-kernel@vger.kernel.org
Cc: fujita.tomonori@lab.ntt.co.jp
Subject: [PATCH] iommu-helper: segment boundary limit should be a power of 2
Date: Sat, 16 Feb 2008 18:09:36 +0900 [thread overview]
Message-ID: <20080216180935E.tomof@acm.org> (raw)
The segment boundary limit should be a power of 2 so let's make it
clear.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
lib/iommu-helper.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/lib/iommu-helper.c b/lib/iommu-helper.c
index 495575a..de0eced 100644
--- a/lib/iommu-helper.c
+++ b/lib/iommu-helper.c
@@ -54,6 +54,8 @@ unsigned long iommu_area_alloc(unsigned long *map, unsigned long size,
unsigned long align_mask)
{
unsigned long index;
+
+ BUG_ON(!is_power_of_2(boundary_size));
again:
index = find_next_zero_area(map, size, start, nr, align_mask);
if (index != -1) {
--
1.5.3.7
reply other threads:[~2008-02-16 9:09 UTC|newest]
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