redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

iommu/amd: Ignore page-mode 7 in free_sub_pt() 

The page-mode 7 is a special one as it marks a final PTE to
a page with an intermediary size.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
hifive-unleashed-5.1
Joerg Roedel 2018-11-09 12:07:08 +01:00
parent 409afa44f9
commit 69be88520f
2 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/iommu/amd_iommu.c
View File

@ -1372,6 +1372,7 @@ static struct page *free_sub_pt(unsigned long root, int mode,
{
switch (mode) {
case PAGE_MODE_NONE:
case PAGE_MODE_7_LEVEL:
break;
case PAGE_MODE_1_LEVEL:
freelist = free_pt_page(root, freelist);
@ -1403,6 +1404,9 @@ static void free_pagetable(struct protection_domain *domain)
unsigned long root = (unsigned long)domain->pt_root;
struct page *freelist = NULL;
BUG_ON(domain->mode < PAGE_MODE_NONE ||
domain->mode > PAGE_MODE_6_LEVEL);
free_sub_pt(root, domain->mode, freelist);
free_page_list(freelist);

1
drivers/iommu/amd_iommu_types.h
View File

@ -269,6 +269,7 @@
#define PAGE_MODE_4_LEVEL 0x04
#define PAGE_MODE_5_LEVEL 0x05
#define PAGE_MODE_6_LEVEL 0x06
#define PAGE_MODE_7_LEVEL 0x07
#define PM_LEVEL_SHIFT(x) (12 + ((x) * 9))
#define PM_LEVEL_SIZE(x) (((x) < 6) ? \