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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Remaining files for shadow 64 mode checkin.
# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID a29b4174d39c403cffcc99229a77bfc3aa9768e3
# Parent e4272b361053c006f448ddf1c7a018477e429599
Remaining files for shadow 64 mode checkin.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
diff -r e4272b361053 -r a29b4174d39c xen/include/asm-x86/page-guest32.h
--- /dev/null Mon Jul 11 10:22:42 2005
+++ b/xen/include/asm-x86/page-guest32.h Mon Jul 11 10:23:19 2005
@@ -0,0 +1,107 @@
+
+#ifndef __X86_PAGE_GUEST_H__
+#define __X86_PAGE_GUEST_H__
+
+#ifndef __ASSEMBLY__
+# include <asm/types.h>
+#endif
+
+#define PAGETABLE_ORDER_32 10
+#define L1_PAGETABLE_ENTRIES_32 (1<<PAGETABLE_ORDER_32)
+#define L2_PAGETABLE_ENTRIES_32 (1<<PAGETABLE_ORDER_32)
+#define ROOT_PAGETABLE_ENTRIES_32 L2_PAGETABLE_ENTRIES_32
+
+
+#define L1_PAGETABLE_SHIFT_32 12
+#define L2_PAGETABLE_SHIFT_32 22
+
+/* Extract flags into 12-bit integer, or turn 12-bit flags into a pte mask. */
+
+#ifndef __ASSEMBLY__
+
+typedef u32 intpte_32_t;
+
+typedef struct { intpte_32_t l1; } l1_pgentry_32_t;
+typedef struct { intpte_32_t l2; } l2_pgentry_32_t;
+typedef l2_pgentry_t root_pgentry_32_t;
+#endif
+
+#define get_pte_flags_32(x) ((u32)(x) & 0xFFF)
+#define put_pte_flags_32(x) ((intpte_32_t)(x))
+
+/* Get pte access flags (unsigned int). */
+#define l1e_get_flags_32(x) (get_pte_flags_32((x).l1))
+#define l2e_get_flags_32(x) (get_pte_flags_32((x).l2))
+
+/* Construct an empty pte. */
+#define l1e_empty_32() ((l1_pgentry_32_t) { 0 })
+#define l2e_empty_32() ((l2_pgentry_32_t) { 0 })
+
+/* Construct a pte from a pfn and access flags. */
+#define l1e_from_pfn_32(pfn, flags) \
+ ((l1_pgentry_32_t) { ((intpte_32_t)(pfn) << PAGE_SHIFT) |
put_pte_flags_32(flags) })
+#define l2e_from_pfn_32(pfn, flags) \
+ ((l2_pgentry_32_t) { ((intpte_32_t)(pfn) << PAGE_SHIFT) |
put_pte_flags_32(flags) })
+
+/* Construct a pte from a physical address and access flags. */
+#ifndef __ASSEMBLY__
+static inline l1_pgentry_32_t l1e_from_paddr_32(physaddr_t pa, unsigned int
flags)
+{
+ ASSERT((pa & ~(PADDR_MASK & PAGE_MASK)) == 0);
+ return (l1_pgentry_32_t) { pa | put_pte_flags_32(flags) };
+}
+static inline l2_pgentry_32_t l2e_from_paddr_32(physaddr_t pa, unsigned int
flags)
+{
+ ASSERT((pa & ~(PADDR_MASK & PAGE_MASK)) == 0);
+ return (l2_pgentry_32_t) { pa | put_pte_flags_32(flags) };
+}
+#endif /* !__ASSEMBLY__ */
+
+
+/* Construct a pte from a page pointer and access flags. */
+#define l1e_from_page_32(page, flags)
(l1e_from_pfn_32(page_to_pfn(page),(flags)))
+#define l2e_from_page_32(page, flags)
(l2e_from_pfn_32(page_to_pfn(page),(flags)))
+
+/* Add extra flags to an existing pte. */
+#define l1e_add_flags_32(x, flags) ((x).l1 |= put_pte_flags_32(flags))
+#define l2e_add_flags_32(x, flags) ((x).l2 |= put_pte_flags_32(flags))
+
+/* Remove flags from an existing pte. */
+#define l1e_remove_flags_32(x, flags) ((x).l1 &= ~put_pte_flags_32(flags))
+#define l2e_remove_flags_32(x, flags) ((x).l2 &= ~put_pte_flags_32(flags))
+
+/* Check if a pte's page mapping or significant access flags have changed. */
+#define l1e_has_changed_32(x,y,flags) \
+ ( !!(((x).l1 ^ (y).l1) & ((PADDR_MASK&PAGE_MASK)|put_pte_flags_32(flags)))
)
+#define l2e_has_changed_32(x,y,flags) \
+ ( !!(((x).l2 ^ (y).l2) & ((PADDR_MASK&PAGE_MASK)|put_pte_flags_32(flags)))
)
+
+/* Given a virtual address, get an entry offset into a page table. */
+#define l1_table_offset_32(a) \
+ (((a) >> L1_PAGETABLE_SHIFT_32) & (L1_PAGETABLE_ENTRIES_32 - 1))
+#define l2_table_offset_32(a) \
+ (((a) >> L2_PAGETABLE_SHIFT_32) & (L2_PAGETABLE_ENTRIES_32 - 1))
+
+#define linear_l1_table_32 \
+ ((l1_pgentry_32_t *)(LINEAR_PT_VIRT_START))
+#define __linear_l2_table_32 \
+ ((l2_pgentry_32_t *)(LINEAR_PT_VIRT_START + \
+ (LINEAR_PT_VIRT_START >> (PAGETABLE_ORDER<<0))))
+
+#define linear_pg_table_32 linear_l1_table_32
+#define linear_l2_table_32(_ed) ((_ed)->arch.guest_vtable)
+
+#define va_to_l1mfn_32(_ed, _va) \
+ (l2e_get_pfn(linear_l2_table(_ed)[_va>>L2_PAGETABLE_SHIFT]))
+
+#endif /* __X86_PAGE_GUEST_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff -r e4272b361053 -r a29b4174d39c xen/include/asm-x86/shadow_64.h
--- /dev/null Mon Jul 11 10:22:42 2005
+++ b/xen/include/asm-x86/shadow_64.h Mon Jul 11 10:23:19 2005
@@ -0,0 +1,504 @@
+/******************************************************************************
+ * include/asm-x86/shadow_64.h
+ *
+ * Copyright (c) 2005 Michael A Fetterman
+ * Based on an earlier implementation by Ian Pratt et al
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/*
+ * Jun Nakajima <jun.nakajima@xxxxxxxxx>
+ * Chengyuan Li <chengyuan.li@xxxxxxxxx>
+ *
+ * Extended to support 64-bit guests.
+ */
+#ifndef _XEN_SHADOW_64_H
+#define _XEN_SHADOW_64_H
+#include <asm/shadow.h>
+
+#define READ_FAULT 0
+#define WRITE_FAULT 1
+
+#define ERROR_W 2
+#define ERROR_U 4
+#define X86_64_SHADOW_DEBUG 0
+
+#if X86_64_SHADOW_DEBUG
+#define ESH_LOG(_f, _a...) \
+ printk(_f, ##_a)
+#else
+#define ESH_LOG(_f, _a...) ((void)0)
+#endif
+
+#define L4 4UL
+#define L3 3UL
+#define L2 2UL
+#define L1 1UL
+#define L_MASK 0xff
+
+#define ROOT_LEVEL_64 L4
+#define ROOT_LEVEL_32 L2
+
+#define SHADOW_ENTRY (2UL << 16)
+#define GUEST_ENTRY (1UL << 16)
+
+#define GET_ENTRY (2UL << 8)
+#define SET_ENTRY (1UL << 8)
+
+#define PAGETABLE_ENTRIES (1<<PAGETABLE_ORDER)
+
+typedef struct { intpte_t lo; } pgentry_64_t;
+#define shadow_level_to_type(l) (l << 29)
+#define shadow_type_to_level(t) (t >> 29)
+
+#define entry_get_value(_x) ((_x).lo)
+#define entry_get_pfn(_x) \
+ (((_x).lo & (PADDR_MASK&PAGE_MASK)) >> PAGE_SHIFT)
+#define entry_get_paddr(_x) (((_x).lo & (PADDR_MASK&PAGE_MASK)))
+#define entry_get_flags(_x) (get_pte_flags((_x).lo))
+
+#define entry_empty() ((pgentry_64_t) { 0 })
+#define entry_from_pfn(pfn, flags) \
+ ((pgentry_64_t) { ((intpte_t)(pfn) << PAGE_SHIFT) | put_pte_flags(flags) })
+#define entry_add_flags(x, flags) ((x).lo |= put_pte_flags(flags))
+#define entry_remove_flags(x, flags) ((x).lo &= ~put_pte_flags(flags))
+#define entry_has_changed(x,y,flags) \
+ ( !!(((x).lo ^ (y).lo) &
((PADDR_MASK&PAGE_MASK)|put_pte_flags(flags))) )
+static inline int table_offset_64(unsigned long va, int level)
+{
+ switch(level) {
+ case 1:
+ return (((va) >> L1_PAGETABLE_SHIFT) & (L1_PAGETABLE_ENTRIES -
1));
+ case 2:
+ return (((va) >> L2_PAGETABLE_SHIFT) & (L2_PAGETABLE_ENTRIES -
1));
+ case 3:
+ return (((va) >> L3_PAGETABLE_SHIFT) & (L3_PAGETABLE_ENTRIES -
1));
+ case 4:
+ return (((va) >> L4_PAGETABLE_SHIFT) & (L4_PAGETABLE_ENTRIES -
1));
+ default:
+ //printk("<table_offset_64> level %d is too big\n", level);
+ return -1;
+ }
+}
+
+static inline void free_out_of_sync_state(struct domain *d)
+{
+ struct out_of_sync_entry *entry;
+
+ // NB: Be careful not to call something that manipulates this list
+ // while walking it. Remove one item at a time, and always
+ // restart from start of list.
+ //
+ while ( (entry = d->arch.out_of_sync) )
+ {
+ d->arch.out_of_sync = entry->next;
+ release_out_of_sync_entry(d, entry);
+
+ entry->next = d->arch.out_of_sync_free;
+ d->arch.out_of_sync_free = entry;
+ }
+}
+
+static inline pgentry_64_t *__entry(
+ struct vcpu *v, u64 va, u32 flag)
+{
+ int i;
+ pgentry_64_t *le_e;
+ pgentry_64_t *le_p;
+ unsigned long mfn;
+ int index;
+ u32 level = flag & L_MASK;
+ struct domain *d = v->domain;
+
+ index = table_offset_64(va, ROOT_LEVEL_64);
+ if (flag & SHADOW_ENTRY)
+ le_e = (pgentry_64_t *)&v->arch.shadow_vtable[index];
+ else
+ le_e = (pgentry_64_t *)&v->arch.guest_vtable[index];
+
+ /*
+ * If it's not external mode, then mfn should be machine physical.
+ */
+ for (i = ROOT_LEVEL_64 - level; i > 0; i--) {
+ if (unlikely(!(entry_get_flags(*le_e) & _PAGE_PRESENT)))
+ return NULL;
+ mfn = entry_get_value(*le_e) >> PAGE_SHIFT;
+ if ((flag & GUEST_ENTRY) && shadow_mode_translate(d))
+ mfn = phys_to_machine_mapping(mfn);
+ le_p = (pgentry_64_t *)phys_to_virt(mfn << PAGE_SHIFT);
+ index = table_offset_64(va, (level + i - 1));
+ le_e = &le_p[index];
+
+ }
+ return le_e;
+
+}
+
+static inline pgentry_64_t *__rw_entry(
+ struct vcpu *ed, u64 va, void *e_p, u32 flag)
+{
+ pgentry_64_t *le_e = __entry(ed, va, flag);
+ pgentry_64_t *e = (pgentry_64_t *)e_p;
+ if (le_e == NULL)
+ return NULL;
+
+ if (e) {
+ if (flag & SET_ENTRY)
+ *le_e = *e;
+ else
+ *e = *le_e;
+ }
+ return le_e;
+}
+#define __shadow_set_l4e(v, va, value) \
+ __rw_entry(v, va, value, SHADOW_ENTRY | SET_ENTRY | L4)
+#define __shadow_get_l4e(v, va, sl4e) \
+ __rw_entry(v, va, sl4e, SHADOW_ENTRY | GET_ENTRY | L4)
+#define __shadow_set_l3e(v, va, value) \
+ __rw_entry(v, va, value, SHADOW_ENTRY | SET_ENTRY | L3)
+#define __shadow_get_l3e(v, va, sl3e) \
+ __rw_entry(v, va, sl3e, SHADOW_ENTRY | GET_ENTRY | L3)
+#define __shadow_set_l2e(v, va, value) \
+ __rw_entry(v, va, value, SHADOW_ENTRY | SET_ENTRY | L2)
+#define __shadow_get_l2e(v, va, sl2e) \
+ __rw_entry(v, va, sl2e, SHADOW_ENTRY | GET_ENTRY | L2)
+#define __shadow_set_l1e(v, va, value) \
+ __rw_entry(v, va, value, SHADOW_ENTRY | SET_ENTRY | L1)
+#define __shadow_get_l1e(v, va, sl1e) \
+ __rw_entry(v, va, sl1e, SHADOW_ENTRY | GET_ENTRY | L1)
+
+#define __guest_set_l4e(v, va, value) \
+ __rw_entry(v, va, value, GUEST_ENTRY | SET_ENTRY | L4)
+#define __guest_get_l4e(v, va, gl4e) \
+ __rw_entry(v, va, gl4e, GUEST_ENTRY | GET_ENTRY | L4)
+#define __guest_set_l3e(v, va, value) \
+ __rw_entry(v, va, value, GUEST_ENTRY | SET_ENTRY | L3)
+#define __guest_get_l3e(v, va, sl3e) \
+ __rw_entry(v, va, gl3e, GUEST_ENTRY | GET_ENTRY | L3)
+
+static inline void * __guest_set_l2e(
+ struct vcpu *v, u64 va, void *value, int size)
+{
+ switch(size) {
+ case 4:
+ // 32-bit guest
+ {
+ l2_pgentry_32_t *l2va;
+
+ l2va = (l2_pgentry_32_t *)v->arch.guest_vtable;
+ if (value)
+ l2va[l2_table_offset_32(va)] = *(l2_pgentry_32_t *)value;
+ return &l2va[l2_table_offset_32(va)];
+ }
+ case 8:
+ return __rw_entry(v, va, value, GUEST_ENTRY | SET_ENTRY | L2);
+ default:
+ BUG();
+ return NULL;
+ }
+ return NULL;
+}
+
+#define __guest_set_l2e(v, va, value) \
+ ( __typeof__(value) )__guest_set_l2e(v, (u64)va, value, sizeof(*value))
+
+static inline void * __guest_get_l2e(
+ struct vcpu *v, u64 va, void *gl2e, int size)
+{
+ switch(size) {
+ case 4:
+ // 32-bit guest
+ {
+ l2_pgentry_32_t *l2va;
+ l2va = (l2_pgentry_32_t *)v->arch.guest_vtable;
+ if (gl2e)
+ *(l2_pgentry_32_t *)gl2e = l2va[l2_table_offset_32(va)];
+ return &l2va[l2_table_offset_32(va)];
+ }
+ case 8:
+ return __rw_entry(v, va, gl2e, GUEST_ENTRY | GET_ENTRY | L2);
+ default:
+ BUG();
+ return NULL;
+ }
+ return NULL;
+}
+
+#define __guest_get_l2e(v, va, gl2e) \
+ (__typeof__ (gl2e))__guest_get_l2e(v, (u64)va, gl2e, sizeof(*gl2e))
+
+static inline void * __guest_set_l1e(
+ struct vcpu *v, u64 va, void *value, int size)
+{
+ switch(size) {
+ case 4:
+ // 32-bit guest
+ {
+ l2_pgentry_32_t gl2e;
+ l1_pgentry_32_t *l1va;
+ unsigned long l1mfn;
+
+ if (!__guest_get_l2e(v, va, &gl2e))
+ return NULL;
+ if (unlikely(!(l2e_get_flags_32(gl2e) & _PAGE_PRESENT)))
+ return NULL;
+
+ l1mfn = phys_to_machine_mapping(
+ l2e_get_pfn(gl2e));
+
+ l1va = (l1_pgentry_32_t *)
+ phys_to_virt(l1mfn << L1_PAGETABLE_SHIFT);
+ if (value)
+ l1va[l1_table_offset_32(va)] = *(l1_pgentry_32_t *)value;
+
+ return &l1va[l1_table_offset_32(va)];
+ }
+
+ case 8:
+ return __rw_entry(v, va, value, GUEST_ENTRY | SET_ENTRY | L1);
+ default:
+ BUG();
+ return NULL;
+ }
+ return NULL;
+}
+
+#define __guest_set_l1e(v, va, value) \
+ ( __typeof__(value) )__guest_set_l1e(v, (u64)va, value, sizeof(*value))
+
+static inline void * __guest_get_l1e(
+ struct vcpu *v, u64 va, void *gl1e, int size)
+{
+ switch(size) {
+ case 4:
+ // 32-bit guest
+ {
+ l2_pgentry_32_t gl2e;
+ l1_pgentry_32_t *l1va;
+ unsigned long l1mfn;
+
+ if (!(__guest_get_l2e(v, va, &gl2e)))
+ return NULL;
+
+
+ if (unlikely(!(l2e_get_flags_32(gl2e) & _PAGE_PRESENT)))
+ return NULL;
+
+
+ l1mfn = phys_to_machine_mapping(
+ l2e_get_pfn(gl2e));
+ l1va = (l1_pgentry_32_t *) phys_to_virt(
+ l1mfn << L1_PAGETABLE_SHIFT);
+ if (gl1e)
+ *(l1_pgentry_32_t *)gl1e = l1va[l1_table_offset_32(va)];
+
+ return &l1va[l1_table_offset_32(va)];
+ }
+ case 8:
+ // 64-bit guest
+ return __rw_entry(v, va, gl1e, GUEST_ENTRY | GET_ENTRY | L1);
+ default:
+ BUG();
+ return NULL;
+ }
+ return NULL;
+}
+
+#define __guest_get_l1e(v, va, gl1e) \
+ ( __typeof__(gl1e) )__guest_get_l1e(v, (u64)va, gl1e, sizeof(*gl1e))
+
+static inline void entry_general(
+ struct domain *d,
+ pgentry_64_t *gle_p,
+ pgentry_64_t *sle_p,
+ unsigned long smfn, u32 level)
+
+{
+ pgentry_64_t gle = *gle_p;
+ pgentry_64_t sle;
+
+ sle = entry_empty();
+ if ( (entry_get_flags(gle) & _PAGE_PRESENT) && (smfn != 0) )
+ {
+ if ((entry_get_flags(gle) & _PAGE_PSE) && level == L2) {
+ sle = entry_from_pfn(smfn, entry_get_flags(gle));
+ entry_remove_flags(sle, _PAGE_PSE);
+
+ if ( shadow_mode_log_dirty(d) ||
+ !(entry_get_flags(gle) & _PAGE_DIRTY) )
+ {
+ pgentry_64_t *l1_p;
+ int i;
+
+ l1_p =(pgentry_64_t *)map_domain_page(smfn);
+ for (i = 0; i < L1_PAGETABLE_ENTRIES; i++)
+ entry_remove_flags(l1_p[i], _PAGE_RW);
+
+ unmap_domain_page(l1_p);
+ }
+ } else {
+ sle = entry_from_pfn(smfn,
+ (entry_get_flags(gle) | _PAGE_RW |
_PAGE_ACCESSED) & ~_PAGE_AVAIL);
+ entry_add_flags(gle, _PAGE_ACCESSED);
+ }
+ // XXX mafetter: Hmm...
+ // Shouldn't the dirty log be checked/updated here?
+ // Actually, it needs to be done in this function's callers.
+ //
+ *gle_p = gle;
+ }
+
+ if ( entry_get_value(sle) || entry_get_value(gle) )
+ SH_VVLOG("%s: gpde=%lx, new spde=%lx", __func__,
+ entry_get_value(gle), entry_get_value(sle));
+
+ *sle_p = sle;
+}
+
+static inline void entry_propagate_from_guest(
+ struct domain *d, pgentry_64_t *gle_p, pgentry_64_t *sle_p, u32 level)
+{
+ pgentry_64_t gle = *gle_p;
+ unsigned long smfn = 0;
+
+ if ( entry_get_flags(gle) & _PAGE_PRESENT ) {
+ if ((entry_get_flags(gle) & _PAGE_PSE) && level == L2) {
+ smfn = __shadow_status(d, entry_get_value(gle) >> PAGE_SHIFT,
PGT_fl1_shadow);
+ } else {
+ smfn = __shadow_status(d, entry_get_pfn(gle),
+ shadow_level_to_type((level -1 )));
+ }
+ }
+ entry_general(d, gle_p, sle_p, smfn, level);
+
+}
+
+static int inline
+validate_entry_change(
+ struct domain *d,
+ pgentry_64_t *new_gle_p,
+ pgentry_64_t *shadow_le_p,
+ u32 level)
+{
+ pgentry_64_t old_sle, new_sle;
+ pgentry_64_t new_gle = *new_gle_p;
+
+ old_sle = *shadow_le_p;
+ entry_propagate_from_guest(d, &new_gle, &new_sle, level);
+
+ ESH_LOG("old_sle: %lx, new_gle: %lx, new_sle: %lx\n",
+ entry_get_value(old_sle), entry_get_value(new_gle),
+ entry_get_value(new_sle));
+
+ if ( ((entry_get_value(old_sle) | entry_get_value(new_sle)) &
_PAGE_PRESENT) &&
+ entry_has_changed(old_sle, new_sle, _PAGE_PRESENT) )
+ {
+ perfc_incrc(validate_entry_changes);
+
+ if ( (entry_get_flags(new_sle) & _PAGE_PRESENT) &&
+ !get_shadow_ref(entry_get_pfn(new_sle)) )
+ BUG();
+ if ( entry_get_flags(old_sle) & _PAGE_PRESENT )
+ put_shadow_ref(entry_get_pfn(old_sle));
+ }
+
+ *shadow_le_p = new_sle;
+
+ return 1;
+}
+
+/*
+ * Check P, R/W, U/S bits in the guest page table.
+ * If the fault belongs to guest return 1,
+ * else return 0.
+ */
+static inline int guest_page_fault(struct vcpu *v,
+ unsigned long va, unsigned int error_code, pgentry_64_t *gpl2e, pgentry_64_t
*gpl1e)
+{
+ struct domain *d = v->domain;
+ pgentry_64_t gle, *lva;
+ unsigned long mfn;
+ int i;
+
+ __rw_entry(v, va, &gle, GUEST_ENTRY | GET_ENTRY | L4);
+ if (unlikely(!(entry_get_flags(gle) & _PAGE_PRESENT)))
+ return 1;
+
+ if (error_code & ERROR_W) {
+ if (unlikely(!(entry_get_flags(gle) & _PAGE_RW)))
+ return 1;
+ }
+ if (error_code & ERROR_U) {
+ if (unlikely(!(entry_get_flags(gle) & _PAGE_USER)))
+ return 1;
+ }
+ for (i = L3; i >= L1; i--) {
+ /*
+ * If it's not external mode, then mfn should be machine physical.
+ */
+ mfn = __gpfn_to_mfn(d, (entry_get_value(gle) >> PAGE_SHIFT));
+
+ lva = (pgentry_64_t *) phys_to_virt(
+ mfn << PAGE_SHIFT);
+ gle = lva[table_offset_64(va, i)];
+
+ if (unlikely(!(entry_get_flags(gle) & _PAGE_PRESENT)))
+ return 1;
+
+ if (error_code & ERROR_W) {
+ if (unlikely(!(entry_get_flags(gle) & _PAGE_RW)))
+ return 1;
+ }
+ if (error_code & ERROR_U) {
+ if (unlikely(!(entry_get_flags(gle) & _PAGE_USER)))
+ return 1;
+ }
+
+ if (i == L2) {
+ if (gpl2e)
+ *gpl2e = gle;
+
+ if (likely(entry_get_flags(gle) & _PAGE_PSE))
+ return 0;
+
+ }
+
+ if (i == L1)
+ if (gpl1e)
+ *gpl1e = gle;
+ }
+ return 0;
+}
+
+static inline unsigned long gva_to_gpa(unsigned long gva)
+{
+ struct vcpu *v = current;
+ pgentry_64_t gl1e;
+ pgentry_64_t gl2e;
+ unsigned long gpa;
+
+ if (guest_page_fault(v, gva, 0, &gl2e, &gl1e))
+ return 0;
+ if (entry_get_flags(gl2e) & _PAGE_PSE)
+ gpa = entry_get_paddr(gl2e) + (gva & ((1 << L2_PAGETABLE_SHIFT) - 1));
+ else
+ gpa = entry_get_paddr(gl1e) + (gva & ~PAGE_MASK);
+
+ return gpa;
+
+}
+#endif
+
+
diff -r e4272b361053 -r a29b4174d39c xen/include/asm-x86/shadow_public.h
--- /dev/null Mon Jul 11 10:22:42 2005
+++ b/xen/include/asm-x86/shadow_public.h Mon Jul 11 10:23:19 2005
@@ -0,0 +1,59 @@
+/******************************************************************************
+ * include/asm-x86/shadow_public.h
+ *
+ * Copyright (c) 2005 Michael A Fetterman
+ * Based on an earlier implementation by Ian Pratt et al
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _XEN_SHADOW_PUBLIC_H
+#define _XEN_SHADOW_PUBLIC_H
+#if CONFIG_PAGING_LEVELS >= 4
+#define MFN_PINNED(_x) (frame_table[_x].u.inuse.type_info & PGT_pinned)
+
+extern int alloc_p2m_table(struct domain *d);
+
+extern void shadow_sync_and_drop_references(
+ struct domain *d, struct pfn_info *page);
+extern void shadow_drop_references(
+ struct domain *d, struct pfn_info *page);
+
+extern void shadow_l4_normal_pt_update(struct domain *d,
+ unsigned long pa, l4_pgentry_t l4e,
+ struct domain_mmap_cache *cache);
+
+extern int shadow_set_guest_paging_levels(struct domain *d, int levels);
+
+extern void release_out_of_sync_entry(
+ struct domain *d, struct out_of_sync_entry *entry);
+
+struct shadow_ops {
+ unsigned long guest_paging_levels; /* guest paging levels */
+ void (*invlpg)(struct vcpu *v, unsigned long va);
+ int (*fault)(unsigned long va, struct cpu_user_regs *regs);
+ void (*update_pagetables)(struct vcpu *v);
+ void (*sync_all)(struct domain *d);
+ int (*remove_all_write_access)(struct domain *d,
+ unsigned long readonly_gpfn, unsigned long readonly_gmfn);
+ int (*do_update_va_mapping)(unsigned long va, l1_pgentry_t val, struct
vcpu *v);
+ struct out_of_sync_entry *
+ (*mark_mfn_out_of_sync)(struct vcpu *v, unsigned long gpfn,
+ unsigned long mfn);
+ int (*is_out_of_sync)(struct vcpu *v, unsigned long va);
+};
+#endif
+
+#endif
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