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x86: introduce create_perdomain_mapping()

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... as well as free_perdomain_mappings(), and use them to carry out the
existing per-domain mapping setup/teardown. This at once makes the
setup of the first sub-range PV domain specific (with idle domains also
excluded), as the GDT/LDT mapping area is needed only for those.

Also fix an improperly scaled BUILD_BUG_ON() expression in
mapcache_domain_init().

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
This commit is contained in:
Jan Beulich committed 2013-02-28 11:08:13 +01:00
1 parent cf0c29d1a9
commit 703ac3abcf
6 files changed
+250 -191
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xen/arch/x86/domain.c
+31 -61
View File
@@ -372,37 +372,16 @@ int switch_compat(struct domain *d)
int vcpu_initialise(struct vcpu *v)
{
struct domain *d = v->domain;
unsigned int idx;
int rc;
v->arch.flags = TF_kernel_mode;
idx = perdomain_pt_idx(v);
if ( !d->arch.perdomain_pts[idx] )
{
void *pt;
l2_pgentry_t *l2tab;
pt = alloc_xenheap_pages(0, MEMF_node(vcpu_to_node(v)));
if ( !pt )
return -ENOMEM;
clear_page(pt);
d->arch.perdomain_pts[idx] = pt;
l2tab = __map_domain_page(d->arch.perdomain_l2_pg[0]);
l2tab[l2_table_offset(PERDOMAIN_VIRT_START) + idx]
= l2e_from_paddr(__pa(pt), __PAGE_HYPERVISOR);
unmap_domain_page(l2tab);
}
rc = mapcache_vcpu_init(v);
if ( rc )
return rc;
paging_vcpu_init(v);
v->arch.perdomain_ptes = perdomain_ptes(d, v);
if ( (rc = vcpu_init_fpu(v)) != 0 )
return rc;
@@ -420,6 +399,12 @@ int vcpu_initialise(struct vcpu *v)
if ( !is_idle_domain(d) )
{
rc = create_perdomain_mapping(d, GDT_VIRT_START(v),
1 << GDT_LDT_VCPU_SHIFT,
d->arch.pv_domain.gdt_ldt_l1tab, NULL);
if ( rc )
goto done;
BUILD_BUG_ON(NR_VECTORS * sizeof(*v->arch.pv_vcpu.trap_ctxt) >
PAGE_SIZE);
v->arch.pv_vcpu.trap_ctxt = xzalloc_array(struct trap_info,
@@ -478,8 +463,6 @@ void vcpu_destroy(struct vcpu *v)
int arch_domain_create(struct domain *d, unsigned int domcr_flags)
{
struct page_info *pg;
l3_pgentry_t *l3tab;
int i, paging_initialised = 0;
int rc = -ENOMEM;
@@ -510,29 +493,24 @@ int arch_domain_create(struct domain *d, unsigned int domcr_flags)
d->domain_id);
}
BUILD_BUG_ON(PDPT_L2_ENTRIES * sizeof(*d->arch.perdomain_pts)
!= PAGE_SIZE);
d->arch.perdomain_pts =
alloc_xenheap_pages(0, MEMF_node(domain_to_node(d)));
if ( !d->arch.perdomain_pts )
goto fail;
clear_page(d->arch.perdomain_pts);
if ( is_hvm_domain(d) )
rc = create_perdomain_mapping(d, PERDOMAIN_VIRT_START, 0, NULL, NULL);
else if ( is_idle_domain(d) )
rc = 0;
else
{
d->arch.pv_domain.gdt_ldt_l1tab =
alloc_xenheap_pages(0, MEMF_node(domain_to_node(d)));
if ( !d->arch.pv_domain.gdt_ldt_l1tab )
goto fail;
clear_page(d->arch.pv_domain.gdt_ldt_l1tab);
pg = alloc_domheap_page(NULL, MEMF_node(domain_to_node(d)));
if ( pg == NULL )
rc = create_perdomain_mapping(d, GDT_LDT_VIRT_START,
GDT_LDT_MBYTES << (20 - PAGE_SHIFT),
NULL, NULL);
}
if ( rc )
goto fail;
d->arch.perdomain_l2_pg[0] = pg;
clear_domain_page(page_to_mfn(pg));
pg = alloc_domheap_page(NULL, MEMF_node(domain_to_node(d)));
if ( pg == NULL )
goto fail;
d->arch.perdomain_l3_pg = pg;
l3tab = __map_domain_page(pg);
clear_page(l3tab);
l3tab[l3_table_offset(PERDOMAIN_VIRT_START)] =
l3e_from_page(d->arch.perdomain_l2_pg[0], __PAGE_HYPERVISOR);
unmap_domain_page(l3tab);
mapcache_domain_init(d);
@@ -608,19 +586,14 @@ int arch_domain_create(struct domain *d, unsigned int domcr_flags)
if ( paging_initialised )
paging_final_teardown(d);
mapcache_domain_exit(d);
for ( i = 0; i < PERDOMAIN_SLOTS; ++i)
if ( d->arch.perdomain_l2_pg[i] )
free_domheap_page(d->arch.perdomain_l2_pg[i]);
if ( d->arch.perdomain_l3_pg )
free_domheap_page(d->arch.perdomain_l3_pg);
free_xenheap_page(d->arch.perdomain_pts);
free_perdomain_mappings(d);
if ( !is_hvm_domain(d) )
free_xenheap_page(d->arch.pv_domain.gdt_ldt_l1tab);
return rc;
}
void arch_domain_destroy(struct domain *d)
{
unsigned int i;
if ( is_hvm_domain(d) )
hvm_domain_destroy(d);
else
@@ -634,13 +607,9 @@ void arch_domain_destroy(struct domain *d)
mapcache_domain_exit(d);
for ( i = 0; i < PDPT_L2_ENTRIES; ++i )
free_xenheap_page(d->arch.perdomain_pts[i]);
free_xenheap_page(d->arch.perdomain_pts);
for ( i = 0; i < PERDOMAIN_SLOTS; ++i)
if ( d->arch.perdomain_l2_pg[i] )
free_domheap_page(d->arch.perdomain_l2_pg[i]);
free_domheap_page(d->arch.perdomain_l3_pg);
free_perdomain_mappings(d);
if ( !is_hvm_domain(d) )
free_xenheap_page(d->arch.pv_domain.gdt_ldt_l1tab);
free_xenheap_page(d->shared_info);
cleanup_domain_irq_mapping(d);
@@ -1515,10 +1484,11 @@ static void __context_switch(void)
if ( need_full_gdt(n) )
{
unsigned long mfn = virt_to_mfn(gdt);
l1_pgentry_t *pl1e = gdt_ldt_ptes(n->domain, n);
unsigned int i;
for ( i = 0; i < NR_RESERVED_GDT_PAGES; i++ )
l1e_write(n->arch.perdomain_ptes +
FIRST_RESERVED_GDT_PAGE + i,
l1e_write(pl1e + FIRST_RESERVED_GDT_PAGE + i,
l1e_from_pfn(mfn + i, __PAGE_HYPERVISOR));
}
xen/arch/x86/domain_page.c
+23 -104
View File
@@ -243,10 +243,7 @@ void copy_domain_page(unsigned long dmfn, unsigned long smfn)
int mapcache_domain_init(struct domain *d)
{
struct mapcache_domain *dcache = &d->arch.pv_domain.mapcache;
l3_pgentry_t *l3tab;
l2_pgentry_t *l2tab;
unsigned int i, bitmap_pages, memf = MEMF_node(domain_to_node(d));
unsigned long *end;
unsigned int bitmap_pages;
if ( is_hvm_domain(d) || is_idle_domain(d) )
return 0;
@@ -256,48 +253,23 @@ int mapcache_domain_init(struct domain *d)
return 0;
#endif
dcache->l1tab = xzalloc_array(l1_pgentry_t *, MAPCACHE_L2_ENTRIES + 1);
d->arch.perdomain_l2_pg[MAPCACHE_SLOT] = alloc_domheap_page(NULL, memf);
if ( !dcache->l1tab || !d->arch.perdomain_l2_pg[MAPCACHE_SLOT] )
dcache->l1tab = xzalloc_array(l1_pgentry_t *, MAPCACHE_L2_ENTRIES);
if ( !dcache->l1tab )
return -ENOMEM;
clear_domain_page(page_to_mfn(d->arch.perdomain_l2_pg[MAPCACHE_SLOT]));
l3tab = __map_domain_page(d->arch.perdomain_l3_pg);
l3tab[l3_table_offset(MAPCACHE_VIRT_START)] =
l3e_from_page(d->arch.perdomain_l2_pg[MAPCACHE_SLOT],
__PAGE_HYPERVISOR);
unmap_domain_page(l3tab);
l2tab = __map_domain_page(d->arch.perdomain_l2_pg[MAPCACHE_SLOT]);
BUILD_BUG_ON(MAPCACHE_VIRT_END + 3 +
2 * PFN_UP(BITS_TO_LONGS(MAPCACHE_ENTRIES) * sizeof(long)) >
BUILD_BUG_ON(MAPCACHE_VIRT_END + PAGE_SIZE * (3 +
2 * PFN_UP(BITS_TO_LONGS(MAPCACHE_ENTRIES) * sizeof(long))) >
MAPCACHE_VIRT_START + (PERDOMAIN_SLOT_MBYTES << 20));
bitmap_pages = PFN_UP(BITS_TO_LONGS(MAPCACHE_ENTRIES) * sizeof(long));
dcache->inuse = (void *)MAPCACHE_VIRT_END + PAGE_SIZE;
dcache->garbage = dcache->inuse +
(bitmap_pages + 1) * PAGE_SIZE / sizeof(long);
end = dcache->garbage + bitmap_pages * PAGE_SIZE / sizeof(long);
for ( i = l2_table_offset((unsigned long)dcache->inuse);
i <= l2_table_offset((unsigned long)(end - 1)); ++i )
{
ASSERT(i <= MAPCACHE_L2_ENTRIES);
dcache->l1tab[i] = alloc_xenheap_pages(0, memf);
if ( !dcache->l1tab[i] )
{
unmap_domain_page(l2tab);
return -ENOMEM;
}
clear_page(dcache->l1tab[i]);
l2tab[i] = l2e_from_paddr(__pa(dcache->l1tab[i]), __PAGE_HYPERVISOR);
}
unmap_domain_page(l2tab);
spin_lock_init(&dcache->lock);
return 0;
return create_perdomain_mapping(d, (unsigned long)dcache->inuse,
2 * bitmap_pages + 1,
NIL(l1_pgentry_t *), NULL);
}
void mapcache_domain_exit(struct domain *d)
@@ -307,94 +279,41 @@ void mapcache_domain_exit(struct domain *d)
if ( is_hvm_domain(d) )
return;
if ( dcache->l1tab )
{
unsigned long i;
for ( i = (unsigned long)dcache->inuse; ; i += PAGE_SIZE )
{
l1_pgentry_t *pl1e;
if ( l2_table_offset(i) > MAPCACHE_L2_ENTRIES ||
!dcache->l1tab[l2_table_offset(i)] )
break;
pl1e = &dcache->l1tab[l2_table_offset(i)][l1_table_offset(i)];
if ( l1e_get_flags(*pl1e) )
free_domheap_page(l1e_get_page(*pl1e));
}
for ( i = 0; i < MAPCACHE_L2_ENTRIES + 1; ++i )
free_xenheap_page(dcache->l1tab[i]);
xfree(dcache->l1tab);
}
xfree(dcache->l1tab);
}
int mapcache_vcpu_init(struct vcpu *v)
{
struct domain *d = v->domain;
struct mapcache_domain *dcache = &d->arch.pv_domain.mapcache;
l2_pgentry_t *l2tab;
unsigned long i;
unsigned int memf = MEMF_node(vcpu_to_node(v));
unsigned int ents = d->max_vcpus * MAPCACHE_VCPU_ENTRIES;
unsigned int nr = PFN_UP(BITS_TO_LONGS(ents) * sizeof(long));
if ( is_hvm_vcpu(v) || !dcache->l1tab )
return 0;
l2tab = __map_domain_page(d->arch.perdomain_l2_pg[MAPCACHE_SLOT]);
while ( dcache->entries < d->max_vcpus * MAPCACHE_VCPU_ENTRIES )
if ( ents > dcache->entries )
{
unsigned int ents = dcache->entries + MAPCACHE_VCPU_ENTRIES;
l1_pgentry_t *pl1e;
/* Populate page tables. */
if ( !dcache->l1tab[i = mapcache_l2_entry(ents - 1)] )
{
dcache->l1tab[i] = alloc_xenheap_pages(0, memf);
if ( !dcache->l1tab[i] )
{
unmap_domain_page(l2tab);
return -ENOMEM;
}
clear_page(dcache->l1tab[i]);
l2tab[i] = l2e_from_paddr(__pa(dcache->l1tab[i]),
__PAGE_HYPERVISOR);
}
int rc = create_perdomain_mapping(d, MAPCACHE_VIRT_START,
d->max_vcpus * MAPCACHE_VCPU_ENTRIES,
dcache->l1tab, NULL);
/* Populate bit maps. */
i = (unsigned long)(dcache->inuse + BITS_TO_LONGS(ents));
pl1e = &dcache->l1tab[l2_table_offset(i)][l1_table_offset(i)];
if ( !l1e_get_flags(*pl1e) )
{
struct page_info *pg = alloc_domheap_page(NULL, memf);
if ( !rc )
rc = create_perdomain_mapping(d, (unsigned long)dcache->inuse,
nr, NULL, NIL(struct page_info *));
if ( !rc )
rc = create_perdomain_mapping(d, (unsigned long)dcache->garbage,
nr, NULL, NIL(struct page_info *));
if ( pg )
{
clear_domain_page(page_to_mfn(pg));
*pl1e = l1e_from_page(pg, __PAGE_HYPERVISOR);
pg = alloc_domheap_page(NULL, memf);
}
if ( !pg )
{
unmap_domain_page(l2tab);
return -ENOMEM;
}
i = (unsigned long)(dcache->garbage + BITS_TO_LONGS(ents));
pl1e = &dcache->l1tab[l2_table_offset(i)][l1_table_offset(i)];
ASSERT(!l1e_get_flags(*pl1e));
clear_domain_page(page_to_mfn(pg));
*pl1e = l1e_from_page(pg, __PAGE_HYPERVISOR);
}
if ( rc )
return rc;
dcache->entries = ents;
}
unmap_domain_page(l2tab);
/* Mark all maphash entries as not in use. */
BUILD_BUG_ON(MAPHASHENT_NOTINUSE < MAPCACHE_ENTRIES);
for ( i = 0; i < MAPHASH_ENTRIES; i++ )
xen/arch/x86/mm.c
+181 -7
View File
@@ -511,6 +511,7 @@ void update_cr3(struct vcpu *v)
static void invalidate_shadow_ldt(struct vcpu *v, int flush)
{
l1_pgentry_t *pl1e;
int i;
unsigned long pfn;
struct page_info *page;
@@ -523,12 +524,13 @@ static void invalidate_shadow_ldt(struct vcpu *v, int flush)
goto out;
v->arch.pv_vcpu.shadow_ldt_mapcnt = 0;
pl1e = gdt_ldt_ptes(v->domain, v);
for ( i = 16; i < 32; i++ )
{
pfn = l1e_get_pfn(v->arch.perdomain_ptes[i]);
pfn = l1e_get_pfn(pl1e[i]);
if ( pfn == 0 ) continue;
l1e_write(&v->arch.perdomain_ptes[i], l1e_empty());
l1e_write(&pl1e[i], l1e_empty());
page = mfn_to_page(pfn);
ASSERT_PAGE_IS_TYPE(page, PGT_seg_desc_page);
ASSERT_PAGE_IS_DOMAIN(page, v->domain);
@@ -596,7 +598,7 @@ int map_ldt_shadow_page(unsigned int off)
nl1e = l1e_from_pfn(page_to_mfn(page), l1e_get_flags(l1e) | _PAGE_RW);
spin_lock(&v->arch.pv_vcpu.shadow_ldt_lock);
l1e_write(&v->arch.perdomain_ptes[off + 16], nl1e);
l1e_write(&gdt_ldt_ptes(d, v)[off + 16], nl1e);
v->arch.pv_vcpu.shadow_ldt_mapcnt++;
spin_unlock(&v->arch.pv_vcpu.shadow_ldt_lock);
@@ -4073,15 +4075,17 @@ long do_update_va_mapping_otherdomain(unsigned long va, u64 val64,
void destroy_gdt(struct vcpu *v)
{
l1_pgentry_t *pl1e;
int i;
unsigned long pfn;
v->arch.pv_vcpu.gdt_ents = 0;
pl1e = gdt_ldt_ptes(v->domain, v);
for ( i = 0; i < FIRST_RESERVED_GDT_PAGE; i++ )
{
if ( (pfn = l1e_get_pfn(v->arch.perdomain_ptes[i])) != 0 )
if ( (pfn = l1e_get_pfn(pl1e[i])) != 0 )
put_page_and_type(mfn_to_page(pfn));
l1e_write(&v->arch.perdomain_ptes[i], l1e_empty());
l1e_write(&pl1e[i], l1e_empty());
v->arch.pv_vcpu.gdt_frames[i] = 0;
}
}
@@ -4092,6 +4096,7 @@ long set_gdt(struct vcpu *v,
unsigned int entries)
{
struct domain *d = v->domain;
l1_pgentry_t *pl1e;
/* NB. There are 512 8-byte entries per GDT page. */
int i, nr_pages = (entries + 511) / 512;
unsigned long mfn, *pfns;
@@ -4124,11 +4129,11 @@ long set_gdt(struct vcpu *v,
/* Install the new GDT. */
v->arch.pv_vcpu.gdt_ents = entries;
pl1e = gdt_ldt_ptes(d, v);
for ( i = 0; i < nr_pages; i++ )
{
v->arch.pv_vcpu.gdt_frames[i] = frames[i];
l1e_write(&v->arch.perdomain_ptes[i],
l1e_from_pfn(frames[i], __PAGE_HYPERVISOR));
l1e_write(&pl1e[i], l1e_from_pfn(frames[i], __PAGE_HYPERVISOR));
}
xfree(pfns);
@@ -5528,6 +5533,175 @@ void __iomem *ioremap(paddr_t pa, size_t len)
return (void __force __iomem *)va;
}
int create_perdomain_mapping(struct domain *d, unsigned long va,
unsigned int nr, l1_pgentry_t **pl1tab,
struct page_info **ppg)
{
struct page_info *pg;
l3_pgentry_t *l3tab;
l2_pgentry_t *l2tab;
l1_pgentry_t *l1tab;
unsigned int memf = MEMF_node(domain_to_node(d));
int rc = 0;
ASSERT(va >= PERDOMAIN_VIRT_START &&
va < PERDOMAIN_VIRT_SLOT(PERDOMAIN_SLOTS));
if ( !d->arch.perdomain_l3_pg )
{
pg = alloc_domheap_page(NULL, MEMF_node(domain_to_node(d)));
if ( !pg )
return -ENOMEM;
l3tab = __map_domain_page(pg);
clear_page(l3tab);
d->arch.perdomain_l3_pg = pg;
if ( !nr )
{
unmap_domain_page(l3tab);
return 0;
}
}
else if ( !nr )
return 0;
else
l3tab = __map_domain_page(d->arch.perdomain_l3_pg);
ASSERT(!l3_table_offset(va ^ (va + nr * PAGE_SIZE - 1)));
if ( !(l3e_get_flags(l3tab[l3_table_offset(va)]) & _PAGE_PRESENT) )
{
pg = alloc_domheap_page(NULL, memf);
if ( !pg )
{
unmap_domain_page(l3tab);
return -ENOMEM;
}
l2tab = __map_domain_page(pg);
clear_page(l2tab);
l3tab[l3_table_offset(va)] = l3e_from_page(pg, __PAGE_HYPERVISOR);
}
else
l2tab = map_domain_page(l3e_get_pfn(l3tab[l3_table_offset(va)]));
unmap_domain_page(l3tab);
if ( !pl1tab && !ppg )
{
unmap_domain_page(l2tab);
return 0;
}
for ( l1tab = NULL; !rc && nr--; )
{
l2_pgentry_t *pl2e = l2tab + l2_table_offset(va);
if ( !(l2e_get_flags(*pl2e) & _PAGE_PRESENT) )
{
if ( pl1tab && !IS_NIL(pl1tab) )
{
l1tab = alloc_xenheap_pages(0, memf);
if ( !l1tab )
{
rc = -ENOMEM;
break;
}
ASSERT(!pl1tab[l2_table_offset(va)]);
pl1tab[l2_table_offset(va)] = l1tab;
pg = virt_to_page(l1tab);
}
else
{
pg = alloc_domheap_page(NULL, memf);
if ( !pg )
{
rc = -ENOMEM;
break;
}
l1tab = __map_domain_page(pg);
}
clear_page(l1tab);
*pl2e = l2e_from_page(pg, __PAGE_HYPERVISOR);
}
else if ( !l1tab )
l1tab = map_domain_page(l2e_get_pfn(*pl2e));
if ( ppg &&
!(l1e_get_flags(l1tab[l1_table_offset(va)]) & _PAGE_PRESENT) )
{
pg = alloc_domheap_page(NULL, memf);
if ( pg )
{
clear_domain_page(page_to_mfn(pg));
if ( !IS_NIL(ppg) )
*ppg++ = pg;
l1tab[l1_table_offset(va)] =
l1e_from_page(pg, __PAGE_HYPERVISOR | _PAGE_AVAIL0);
l2e_add_flags(*pl2e, _PAGE_AVAIL0);
}
else
rc = -ENOMEM;
}
va += PAGE_SIZE;
if ( rc || !nr || !l1_table_offset(va) )
{
/* Note that this is a no-op for the alloc_xenheap_page() case. */
unmap_domain_page(l1tab);
l1tab = NULL;
}
}
ASSERT(!l1tab);
unmap_domain_page(l2tab);
return rc;
}
void free_perdomain_mappings(struct domain *d)
{
l3_pgentry_t *l3tab = __map_domain_page(d->arch.perdomain_l3_pg);
unsigned int i;
for ( i = 0; i < PERDOMAIN_SLOTS; ++i)
if ( l3e_get_flags(l3tab[i]) & _PAGE_PRESENT )
{
struct page_info *l2pg = l3e_get_page(l3tab[i]);
l2_pgentry_t *l2tab = __map_domain_page(l2pg);
unsigned int j;
for ( j = 0; j < L2_PAGETABLE_ENTRIES; ++j )
if ( l2e_get_flags(l2tab[j]) & _PAGE_PRESENT )
{
struct page_info *l1pg = l2e_get_page(l2tab[j]);
if ( l2e_get_flags(l2tab[j]) & _PAGE_AVAIL0 )
{
l1_pgentry_t *l1tab = __map_domain_page(l1pg);
unsigned int k;
for ( k = 0; k < L1_PAGETABLE_ENTRIES; ++k )
if ( (l1e_get_flags(l1tab[k]) &
(_PAGE_PRESENT | _PAGE_AVAIL0)) ==
(_PAGE_PRESENT | _PAGE_AVAIL0) )
free_domheap_page(l1e_get_page(l1tab[k]));
unmap_domain_page(l1tab);
}
if ( is_xen_heap_page(l1pg) )
free_xenheap_page(page_to_virt(l1pg));
else
free_domheap_page(l1pg);
}
unmap_domain_page(l2tab);
free_domheap_page(l2pg);
}
unmap_domain_page(l3tab);
free_domheap_page(d->arch.perdomain_l3_pg);
}
#ifdef MEMORY_GUARD
void memguard_init(void)
xen/include/asm-x86/config.h
+2 -8
View File
@@ -304,19 +304,13 @@ extern unsigned long xen_phys_start;
#define LDT_VIRT_START(v) \
(GDT_VIRT_START(v) + (64*1024))
/* map_domain_page() map cache. The last per-domain-mapping sub-area. */
/* map_domain_page() map cache. The second per-domain-mapping sub-area. */
#define MAPCACHE_VCPU_ENTRIES (CONFIG_PAGING_LEVELS * CONFIG_PAGING_LEVELS)
#define MAPCACHE_ENTRIES (MAX_VIRT_CPUS * MAPCACHE_VCPU_ENTRIES)
#define MAPCACHE_SLOT (PERDOMAIN_SLOTS - 1)
#define MAPCACHE_VIRT_START PERDOMAIN_VIRT_SLOT(MAPCACHE_SLOT)
#define MAPCACHE_VIRT_START PERDOMAIN_VIRT_SLOT(1)
#define MAPCACHE_VIRT_END (MAPCACHE_VIRT_START + \
MAPCACHE_ENTRIES * PAGE_SIZE)
#define PDPT_L1_ENTRIES \
((PERDOMAIN_VIRT_SLOT(PERDOMAIN_SLOTS - 1) - PERDOMAIN_VIRT_START) >> PAGE_SHIFT)
#define PDPT_L2_ENTRIES \
((PDPT_L1_ENTRIES + (1 << PAGETABLE_ORDER) - 1) >> PAGETABLE_ORDER)
#define ELFSIZE 64
#define ARCH_CRASH_SAVE_VMCOREINFO
xen/include/asm-x86/domain.h
+5 -11
View File
@@ -223,6 +223,8 @@ struct time_scale {
struct pv_domain
{
l1_pgentry_t **gdt_ldt_l1tab;
/* Shared page for notifying that explicit PIRQ EOI is required. */
unsigned long *pirq_eoi_map;
unsigned long pirq_eoi_map_mfn;
@@ -241,8 +243,6 @@ struct pv_domain
struct arch_domain
{
void **perdomain_pts;
struct page_info *perdomain_l2_pg[PERDOMAIN_SLOTS];
struct page_info *perdomain_l3_pg;
unsigned int hv_compat_vstart;
@@ -318,10 +318,10 @@ struct arch_domain
#define has_arch_pdevs(d) (!list_empty(&(d)->arch.pdev_list))
#define has_arch_mmios(d) (!rangeset_is_empty((d)->iomem_caps))
#define perdomain_pt_idx(v) \
#define gdt_ldt_pt_idx(v) \
((v)->vcpu_id >> (PAGETABLE_ORDER - GDT_LDT_VCPU_SHIFT))
#define perdomain_ptes(d, v) \
((l1_pgentry_t *)(d)->arch.perdomain_pts[perdomain_pt_idx(v)] + \
#define gdt_ldt_ptes(d, v) \
((d)->arch.pv_domain.gdt_ldt_l1tab[gdt_ldt_pt_idx(v)] + \
(((v)->vcpu_id << GDT_LDT_VCPU_SHIFT) & (L1_PAGETABLE_ENTRIES - 1)))
struct pv_vcpu
@@ -406,12 +406,6 @@ struct arch_vcpu
struct hvm_vcpu hvm_vcpu;
};
/*
* Every domain has a L1 pagetable of its own. Per-domain mappings
* are put in this table (eg. the current GDT is mapped here).
*/
l1_pgentry_t *perdomain_ptes;
pagetable_t guest_table_user; /* (MFN) x86/64 user-space pagetable */
pagetable_t guest_table; /* (MFN) guest notion of cr3 */
/* guest_table holds a ref to the page, and also a type-count unless
xen/include/asm-x86/mm.h
+8
View File
@@ -573,6 +573,14 @@ int donate_page(
int map_ldt_shadow_page(unsigned int);
#define NIL(type) ((type *)NULL - 1)
#define IS_NIL(ptr) (!((ptr) + 1))
int create_perdomain_mapping(struct domain *, unsigned long va,
unsigned int nr, l1_pgentry_t **,
struct page_info **);
void free_perdomain_mappings(struct domain *);
extern int memory_add(unsigned long spfn, unsigned long epfn, unsigned int pxm);
void domain_set_alloc_bitsize(struct domain *d);
Reference in new issue
xen-project/xen
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