提交 df08cdc7 编写于 作者: A Andrew Morton 提交者: Linus Torvalds

drivers/pci/intel-iommu.c: fix build with older gcc's

drivers/pci/intel-iommu.c: In function `__iommu_calculate_agaw':
drivers/pci/intel-iommu.c:437: sorry, unimplemented: inlining failed in call to 'width_to_agaw': function body not available
drivers/pci/intel-iommu.c:445: sorry, unimplemented: called from here

Move the offending function (and its siblings) to top-of-file, remove the
forward declaration.

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=17441Reported-by: NMartin Mokrejs <mmokrejs@ribosome.natur.cuni.cz>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: <stable@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 e85bfd3a
......@@ -71,6 +71,49 @@
#define DMA_32BIT_PFN IOVA_PFN(DMA_BIT_MASK(32))
#define DMA_64BIT_PFN IOVA_PFN(DMA_BIT_MASK(64))
/* page table handling */
#define LEVEL_STRIDE (9)
#define LEVEL_MASK (((u64)1 << LEVEL_STRIDE) - 1)
static inline int agaw_to_level(int agaw)
{
return agaw + 2;
}
static inline int agaw_to_width(int agaw)
{
return 30 + agaw * LEVEL_STRIDE;
}
static inline int width_to_agaw(int width)
{
return (width - 30) / LEVEL_STRIDE;
}
static inline unsigned int level_to_offset_bits(int level)
{
return (level - 1) * LEVEL_STRIDE;
}
static inline int pfn_level_offset(unsigned long pfn, int level)
{
return (pfn >> level_to_offset_bits(level)) & LEVEL_MASK;
}
static inline unsigned long level_mask(int level)
{
return -1UL << level_to_offset_bits(level);
}
static inline unsigned long level_size(int level)
{
return 1UL << level_to_offset_bits(level);
}
static inline unsigned long align_to_level(unsigned long pfn, int level)
{
return (pfn + level_size(level) - 1) & level_mask(level);
}
/* VT-d pages must always be _smaller_ than MM pages. Otherwise things
are never going to work. */
......@@ -434,8 +477,6 @@ void free_iova_mem(struct iova *iova)
}
static inline int width_to_agaw(int width);
static int __iommu_calculate_agaw(struct intel_iommu *iommu, int max_gaw)
{
unsigned long sagaw;
......@@ -646,51 +687,6 @@ static void free_context_table(struct intel_iommu *iommu)
spin_unlock_irqrestore(&iommu->lock, flags);
}
/* page table handling */
#define LEVEL_STRIDE (9)
#define LEVEL_MASK (((u64)1 << LEVEL_STRIDE) - 1)
static inline int agaw_to_level(int agaw)
{
return agaw + 2;
}
static inline int agaw_to_width(int agaw)
{
return 30 + agaw * LEVEL_STRIDE;
}
static inline int width_to_agaw(int width)
{
return (width - 30) / LEVEL_STRIDE;
}
static inline unsigned int level_to_offset_bits(int level)
{
return (level - 1) * LEVEL_STRIDE;
}
static inline int pfn_level_offset(unsigned long pfn, int level)
{
return (pfn >> level_to_offset_bits(level)) & LEVEL_MASK;
}
static inline unsigned long level_mask(int level)
{
return -1UL << level_to_offset_bits(level);
}
static inline unsigned long level_size(int level)
{
return 1UL << level_to_offset_bits(level);
}
static inline unsigned long align_to_level(unsigned long pfn, int level)
{
return (pfn + level_size(level) - 1) & level_mask(level);
}
static struct dma_pte *pfn_to_dma_pte(struct dmar_domain *domain,
unsigned long pfn)
{
......
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