From: Joerg Roedel <[email protected]> The function is a more generic version of free_pagetable() and will be used to free only specific sub-trees of a page-table.
Signed-off-by: Joerg Roedel <[email protected]> --- drivers/iommu/amd_iommu.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 2655bd91af93..1186571f77e1 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1367,12 +1367,10 @@ DEFINE_FREE_PT_FN(l4, free_pt_l3) DEFINE_FREE_PT_FN(l5, free_pt_l4) DEFINE_FREE_PT_FN(l6, free_pt_l5) -static void free_pagetable(struct protection_domain *domain) +static struct page *free_sub_pt(unsigned long root, int mode, + struct page *freelist) { - unsigned long root = (unsigned long)domain->pt_root; - struct page *freelist = NULL; - - switch (domain->mode) { + switch (mode) { case PAGE_MODE_NONE: break; case PAGE_MODE_1_LEVEL: @@ -1397,6 +1395,16 @@ static void free_pagetable(struct protection_domain *domain) BUG(); } + return freelist; +} + +static void free_pagetable(struct protection_domain *domain) +{ + unsigned long root = (unsigned long)domain->pt_root; + struct page *freelist = NULL; + + free_sub_pt(root, domain->mode, freelist); + free_page_list(freelist); } -- 2.17.1 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
