From: Joerg Roedel <jroe...@suse.de>
This function is unused and can be removed.
Tested-by: Baoquan He <b...@redhat.com>
Signed-off-by: Joerg Roedel <jroe...@suse.de>
---
drivers/iommu/intel-iommu.c | 36 ------------------------------------
include/linux/intel-iommu.h | 2 --
2 files changed, 38 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 60d5491..a061c3f 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -4978,42 +4978,6 @@ int __iommu_load_from_oldmem(void *to, unsigned long
from, unsigned long size)
}
/*
- * Copy memory from a virtually-addressed area into a physically-addressed area
- */
-int __iommu_save_to_oldmem(unsigned long to, void *from, unsigned long size)
-{
- unsigned long pfn; /* Page Frame Number */
- size_t csize = (size_t)size; /* Num(bytes to copy) */
- unsigned long offset; /* Lower 12 bits of to */
- void __iomem *virt_mem;
- struct iommu_remapped_entry *mapped;
-
- pfn = to >> VTD_PAGE_SHIFT;
- offset = to & (~VTD_PAGE_MASK);
-
- if (page_is_ram(pfn)) {
- memcpy(pfn_to_kaddr(pfn) + offset, from, csize);
- } else{
- mapped = kzalloc(sizeof(struct iommu_remapped_entry),
- GFP_KERNEL);
- if (!mapped)
- return -ENOMEM;
-
- virt_mem = ioremap_cache((unsigned long)to, size);
- if (!virt_mem) {
- kfree(mapped);
- return -ENOMEM;
- }
- memcpy(virt_mem, from, size);
- mutex_lock(&__iommu_mem_list_lock);
- mapped->mem = virt_mem;
- list_add_tail(&mapped->list, &__iommu_remapped_mem);
- mutex_unlock(&__iommu_mem_list_lock);
- }
- return size;
-}
-
-/*
* Free the mapped memory for ioremap;
*/
int __iommu_free_mapped_mem(void)
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index a81ceee..9526c28 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -393,8 +393,6 @@ extern const struct attribute_group *intel_iommu_groups[];
extern int __iommu_load_from_oldmem(void *to, unsigned long from,
unsigned long size);
-extern int __iommu_save_to_oldmem(unsigned long to, void *from,
- unsigned long size);
extern int __iommu_free_mapped_mem(void);
#endif
--
1.9.1
--
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