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xen: Fix {set,clear}_foreign_p2m_mapping on autotranslating guests

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Commit 82616f9599 ("xen: remove tests for pvh mode in pure pv paths")
removed the check for autotranslation from {set,clear}_foreign_p2m_mapping
but those are called by grant-table.c also on PVH/HVM guests.

Cc: <stable@vger.kernel.org> # 4.14
Fixes: 82616f9599 ("xen: remove tests for pvh mode in pure pv paths")
Signed-off-by: Simon Gaiser <simon@invisiblethingslab.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Simon Gaiser 2018-02-07 21:47:40 +01:00 • committed by Juergen Gross
parent 7611912588
commit 781198f1f3
1 changed files with 6 additions and 0 deletions
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6
arch/x86/xen/p2m.c
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@ -694,6 +694,9 @@ int set_foreign_p2m_mapping(struct gnttab_map_grant_ref *map_ops,
int i, ret = 0; int i, ret = 0;
pte_t *pte; pte_t *pte;
if (xen_feature(XENFEAT_auto_translated_physmap))
return 0;
if (kmap_ops) { if (kmap_ops) {
ret = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, ret = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref,
kmap_ops, count); kmap_ops, count);
@ -736,6 +739,9 @@ int clear_foreign_p2m_mapping(struct gnttab_unmap_grant_ref *unmap_ops,
{ {
int i, ret = 0; int i, ret = 0;
if (xen_feature(XENFEAT_auto_translated_physmap))
return 0;
for (i = 0; i < count; i++) { for (i = 0; i < count; i++) {
unsigned long mfn = __pfn_to_mfn(page_to_pfn(pages[i])); unsigned long mfn = __pfn_to_mfn(page_to_pfn(pages[i]));
unsigned long pfn = page_to_pfn(pages[i]); unsigned long pfn = page_to_pfn(pages[i]);