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iommu/vt-d: Use put_pages_list

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page->freelist is for the use of slab.  We already have the ability
to free a list of pages in the core mm, but it requires the use of a
list_head and for the pages to be chained together through page->lru.
Switch the Intel IOMMU and IOVA code over to using free_pages_list().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
[rm: split from original patch, cosmetic tweaks, fix fq entries]
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/2115b560d9a0ce7cd4b948bd51a2b7bde8fdfd59.1639753638.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Matthew Wilcox (Oracle)
2021-12-17 15:31:00 +00:00
committed by Joerg Roedel
parent ce00eece69
commit 87f60cc65d
5 changed files with 45 additions and 79 deletions
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3
include/linux/iommu.h
View File

@@ -186,7 +186,7 @@ struct iommu_iotlb_gather {
unsigned long start;
unsigned long end;
size_t pgsize;
struct page *freelist;
struct list_head freelist;
bool queued;
};
@@ -399,6 +399,7 @@ static inline void iommu_iotlb_gather_init(struct iommu_iotlb_gather *gather)
{
*gather = (struct iommu_iotlb_gather) {
.start = ULONG_MAX,
.freelist = LIST_HEAD_INIT(gather->freelist),
};
}

4
include/linux/iova.h
View File

@@ -46,7 +46,7 @@ struct iova_rcache {
struct iova_fq_entry {
unsigned long iova_pfn;
unsigned long pages;
struct page *freelist;
struct list_head freelist;
u64 counter; /* Flush counter when this entrie was added */
};
@@ -135,7 +135,7 @@ void free_iova_fast(struct iova_domain *iovad, unsigned long pfn,
unsigned long size);
void queue_iova(struct iova_domain *iovad,
unsigned long pfn, unsigned long pages,
struct page *freelist);
struct list_head *freelist);
unsigned long alloc_iova_fast(struct iova_domain *iovad, unsigned long size,
unsigned long limit_pfn, bool flush_rcache);
struct iova *reserve_iova(struct iova_domain *iovad, unsigned long pfn_lo,