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Diffstat (limited to 'arch/x86/xen/p2m.c')
-rw-r--r--arch/x86/xen/p2m.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 2ae8699e8767..696c694986d0 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -280,6 +280,9 @@ void __ref xen_build_mfn_list_list(void)
280{ 280{
281 unsigned long pfn; 281 unsigned long pfn;
282 282
283 if (xen_feature(XENFEAT_auto_translated_physmap))
284 return;
285
283 /* Pre-initialize p2m_top_mfn to be completely missing */ 286 /* Pre-initialize p2m_top_mfn to be completely missing */
284 if (p2m_top_mfn == NULL) { 287 if (p2m_top_mfn == NULL) {
285 p2m_mid_missing_mfn = extend_brk(PAGE_SIZE, PAGE_SIZE); 288 p2m_mid_missing_mfn = extend_brk(PAGE_SIZE, PAGE_SIZE);
@@ -336,6 +339,9 @@ void __ref xen_build_mfn_list_list(void)
336 339
337void xen_setup_mfn_list_list(void) 340void xen_setup_mfn_list_list(void)
338{ 341{
342 if (xen_feature(XENFEAT_auto_translated_physmap))
343 return;
344
339 BUG_ON(HYPERVISOR_shared_info == &xen_dummy_shared_info); 345 BUG_ON(HYPERVISOR_shared_info == &xen_dummy_shared_info);
340 346
341 HYPERVISOR_shared_info->arch.pfn_to_mfn_frame_list_list = 347 HYPERVISOR_shared_info->arch.pfn_to_mfn_frame_list_list =
@@ -346,10 +352,15 @@ void xen_setup_mfn_list_list(void)
346/* Set up p2m_top to point to the domain-builder provided p2m pages */ 352/* Set up p2m_top to point to the domain-builder provided p2m pages */
347void __init xen_build_dynamic_phys_to_machine(void) 353void __init xen_build_dynamic_phys_to_machine(void)
348{ 354{
349 unsigned long *mfn_list = (unsigned long *)xen_start_info->mfn_list; 355 unsigned long *mfn_list;
350 unsigned long max_pfn = min(MAX_DOMAIN_PAGES, xen_start_info->nr_pages); 356 unsigned long max_pfn;
351 unsigned long pfn; 357 unsigned long pfn;
352 358
359 if (xen_feature(XENFEAT_auto_translated_physmap))
360 return;
361
362 mfn_list = (unsigned long *)xen_start_info->mfn_list;
363 max_pfn = min(MAX_DOMAIN_PAGES, xen_start_info->nr_pages);
353 xen_max_p2m_pfn = max_pfn; 364 xen_max_p2m_pfn = max_pfn;
354 365
355 p2m_missing = extend_brk(PAGE_SIZE, PAGE_SIZE); 366 p2m_missing = extend_brk(PAGE_SIZE, PAGE_SIZE);