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xen: remove tests for pvh mode in pure pv paths

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Remove the last tests for XENFEAT_auto_translated_physmap in pure
PV-domain specific paths. PVH V1 is gone and the feature will always
be "false" in PV guests.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
This commit is contained in:
Juergen Gross 2017-08-04 13:36:11 +02:00 committed by Boris Ostrovsky
parent fff219d90c
commit 82616f9599
3 changed files with 2 additions and 31 deletions
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3
arch/x86/include/asm/xen/page.h
View file

@ -158,9 +158,6 @@ static inline unsigned long mfn_to_pfn_no_overrides(unsigned long mfn)
unsigned long pfn;
int ret;
if (xen_feature(XENFEAT_auto_translated_physmap))
return mfn;
if (unlikely(mfn >= machine_to_phys_nr))
return ~0;

25
arch/x86/xen/p2m.c
View file

@ -212,8 +212,7 @@ void __ref xen_build_mfn_list_list(void)
unsigned int level, topidx, mididx;
unsigned long *mid_mfn_p;
if (xen_feature(XENFEAT_auto_translated_physmap) ||
xen_start_info->flags & SIF_VIRT_P2M_4TOOLS)
if (xen_start_info->flags & SIF_VIRT_P2M_4TOOLS)
return;
/* Pre-initialize p2m_top_mfn to be completely missing */
@ -269,9 +268,6 @@ void __ref xen_build_mfn_list_list(void)
void xen_setup_mfn_list_list(void)
{
if (xen_feature(XENFEAT_auto_translated_physmap))
return;
BUG_ON(HYPERVISOR_shared_info == &xen_dummy_shared_info);
if (xen_start_info->flags & SIF_VIRT_P2M_4TOOLS)
@ -291,9 +287,6 @@ void __init xen_build_dynamic_phys_to_machine(void)
{
unsigned long pfn;
if (xen_feature(XENFEAT_auto_translated_physmap))
return;
xen_p2m_addr = (unsigned long *)xen_start_info->mfn_list;
xen_p2m_size = ALIGN(xen_start_info->nr_pages, P2M_PER_PAGE);
@ -540,9 +533,6 @@ int xen_alloc_p2m_entry(unsigned long pfn)
unsigned long addr = (unsigned long)(xen_p2m_addr + pfn);
unsigned long p2m_pfn;
if (xen_feature(XENFEAT_auto_translated_physmap))
return 0;
ptep = lookup_address(addr, &level);
BUG_ON(!ptep || level != PG_LEVEL_4K);
pte_pg = (pte_t *)((unsigned long)ptep & ~(PAGE_SIZE - 1));
@ -640,9 +630,6 @@ unsigned long __init set_phys_range_identity(unsigned long pfn_s,
if (unlikely(pfn_s >= xen_p2m_size))
return 0;
if (unlikely(xen_feature(XENFEAT_auto_translated_physmap)))
return pfn_e - pfn_s;
if (pfn_s > pfn_e)
return 0;
@ -660,10 +647,6 @@ bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn)
pte_t *ptep;
unsigned int level;
/* don't track P2M changes in autotranslate guests */
if (unlikely(xen_feature(XENFEAT_auto_translated_physmap)))
return true;
if (unlikely(pfn >= xen_p2m_size)) {
BUG_ON(mfn != INVALID_P2M_ENTRY);
return true;
@ -711,9 +694,6 @@ int set_foreign_p2m_mapping(struct gnttab_map_grant_ref *map_ops,
int i, ret = 0;
pte_t *pte;
if (xen_feature(XENFEAT_auto_translated_physmap))
return 0;
if (kmap_ops) {
ret = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref,
kmap_ops, count);
@ -756,9 +736,6 @@ int clear_foreign_p2m_mapping(struct gnttab_unmap_grant_ref *unmap_ops,
{
int i, ret = 0;
if (xen_feature(XENFEAT_auto_translated_physmap))
return 0;
for (i = 0; i < count; i++) {
unsigned long mfn = __pfn_to_mfn(page_to_pfn(pages[i]));
unsigned long pfn = page_to_pfn(pages[i]);

5
arch/x86/xen/setup.c
View file

@ -340,8 +340,6 @@ static void __init xen_do_set_identity_and_remap_chunk(
WARN_ON(size == 0);
BUG_ON(xen_feature(XENFEAT_auto_translated_physmap));
mfn_save = virt_to_mfn(buf);
for (ident_pfn_iter = start_pfn, remap_pfn_iter = remap_pfn;
@ -1024,8 +1022,7 @@ void __init xen_pvmmu_arch_setup(void)
void __init xen_arch_setup(void)
{
xen_panic_handler_init();
if (!xen_feature(XENFEAT_auto_translated_physmap))
xen_pvmmu_arch_setup();
xen_pvmmu_arch_setup();
#ifdef CONFIG_ACPI
if (!(xen_start_info->flags & SIF_INITDOMAIN)) {