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authorZhen Lei <thunder.leizhen@huawei.com>2017-09-21 18:52:45 +0300
committerJoerg Roedel <jroedel@suse.de>2017-09-27 18:09:57 +0300
commitaa3ac9469c1850ed00741955b975c3a19029763a (patch)
tree998e22c451f149ef7c2cd5284d1539cc9b33496f /include/linux/iova.h
parente60aa7b53845a261dd419652f12ab9f89e668843 (diff)
downloadlinux-aa3ac9469c1850ed00741955b975c3a19029763a.tar.xz
iommu/iova: Make dma_32bit_pfn implicit
Now that the cached node optimisation can apply to all allocations, the couple of users which were playing tricks with dma_32bit_pfn in order to benefit from it can stop doing so. Conversely, there is also no need for all the other users to explicitly calculate a 'real' 32-bit PFN, when init_iova_domain() can happily do that itself from the page granularity. CC: Thierry Reding <thierry.reding@gmail.com> CC: Jonathan Hunter <jonathanh@nvidia.com> CC: David Airlie <airlied@linux.ie> CC: Sudeep Dutt <sudeep.dutt@intel.com> CC: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Zhen Lei <thunder.leizhen@huawei.com> Tested-by: Nate Watterson <nwatters@codeaurora.org> [rm: use iova_shift(), rewrote commit message] Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/iova.h')
-rw-r--r--include/linux/iova.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/include/linux/iova.h b/include/linux/iova.h
index 69ea3e258ff2..953cfd20f152 100644
--- a/include/linux/iova.h
+++ b/include/linux/iova.h
@@ -154,7 +154,7 @@ struct iova *reserve_iova(struct iova_domain *iovad, unsigned long pfn_lo,
unsigned long pfn_hi);
void copy_reserved_iova(struct iova_domain *from, struct iova_domain *to);
void init_iova_domain(struct iova_domain *iovad, unsigned long granule,
- unsigned long start_pfn, unsigned long pfn_32bit);
+ unsigned long start_pfn);
int init_iova_flush_queue(struct iova_domain *iovad,
iova_flush_cb flush_cb, iova_entry_dtor entry_dtor);
struct iova *find_iova(struct iova_domain *iovad, unsigned long pfn);
@@ -230,8 +230,7 @@ static inline void copy_reserved_iova(struct iova_domain *from,
static inline void init_iova_domain(struct iova_domain *iovad,
unsigned long granule,
- unsigned long start_pfn,
- unsigned long pfn_32bit)
+ unsigned long start_pfn)
{
}