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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] map_p2m_entry only needs gpfn and gmfn as input parameters.
# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Node ID b42b80403ddd93f42146ffddf190b56a86f54f69
# Parent 5fa2cd68d059dd32d6c23f196ec6eae3c1690ad6
map_p2m_entry only needs gpfn and gmfn as input parameters.
Current map_p2m_entry has a redundant input parameter 'va', this patch
removes it.
Signed-off-by: Xin Li <xin.b.li@xxxxxxxxx>
---
xen/arch/x86/shadow32.c | 24 ++++++++----------------
xen/arch/x86/shadow_public.c | 17 +++++++----------
2 files changed, 15 insertions(+), 26 deletions(-)
diff -r 5fa2cd68d059 -r b42b80403ddd xen/arch/x86/shadow32.c
--- a/xen/arch/x86/shadow32.c Thu Jul 27 13:17:17 2006 +0100
+++ b/xen/arch/x86/shadow32.c Thu Jul 27 13:17:58 2006 +0100
@@ -835,12 +835,12 @@ void free_monitor_pagetable(struct vcpu
}
static int
-map_p2m_entry(l1_pgentry_t *l1tab, unsigned long va,
- unsigned long gpa, unsigned long mfn)
+map_p2m_entry(l1_pgentry_t *l1tab, unsigned long gpfn, unsigned long mfn)
{
unsigned long *l0tab = NULL;
l1_pgentry_t l1e = { 0 };
struct page_info *page;
+ unsigned long va = RO_MPT_VIRT_START + (gpfn * sizeof(mfn));
l1e = l1tab[l1_table_offset(va)];
if ( !(l1e_get_flags(l1e) & _PAGE_PRESENT) )
@@ -858,7 +858,7 @@ map_p2m_entry(l1_pgentry_t *l1tab, unsig
else
l0tab = map_domain_page(l1e_get_pfn(l1e));
- l0tab[gpa & ((PAGE_SIZE / sizeof(mfn)) - 1)] = mfn;
+ l0tab[gpfn & ((PAGE_SIZE / sizeof(mfn)) - 1)] = mfn;
unmap_domain_page(l0tab);
@@ -877,15 +877,9 @@ set_p2m_entry(struct domain *d, unsigned
unsigned long va = pfn << PAGE_SHIFT;
if ( shadow_mode_external(d) )
- {
tabpfn = pagetable_get_pfn(d->vcpu[0]->arch.monitor_table);
- va = RO_MPT_VIRT_START + (pfn * sizeof (unsigned long));
- }
else
- {
tabpfn = pagetable_get_pfn(d->arch.phys_table);
- va = pfn << PAGE_SHIFT;
- }
ASSERT(tabpfn != 0);
ASSERT(shadow_lock_is_acquired(d));
@@ -902,12 +896,12 @@ set_p2m_entry(struct domain *d, unsigned
l1_pgentry_t *l1tab = NULL;
l2_pgentry_t l2e;
- l2e = l2[l2_table_offset(va)];
+ l2e = l2[l2_table_offset(RO_MPT_VIRT_START)];
ASSERT( l2e_get_flags(l2e) & _PAGE_PRESENT );
l1tab = map_domain_page(l2e_get_pfn(l2e));
- if ( !(error = map_p2m_entry(l1tab, va, pfn, mfn)) )
+ if ( !(error = map_p2m_entry(l1tab, pfn, mfn)) )
domain_crash(d);
unmap_domain_page(l1tab);
@@ -952,7 +946,6 @@ alloc_p2m_table(struct domain *d)
alloc_p2m_table(struct domain *d)
{
struct list_head *list_ent;
- unsigned long va = RO_MPT_VIRT_START; /* phys_to_machine_mapping */
l2_pgentry_t *l2tab = NULL;
l1_pgentry_t *l1tab = NULL;
@@ -965,14 +958,14 @@ alloc_p2m_table(struct domain *d)
{
l2tab = map_domain_page(
pagetable_get_pfn(d->vcpu[0]->arch.monitor_table));
- l2e = l2tab[l2_table_offset(va)];
+ l2e = l2tab[l2_table_offset(RO_MPT_VIRT_START)];
if ( !(l2e_get_flags(l2e) & _PAGE_PRESENT) )
{
page = alloc_domheap_page(NULL);
l1tab = map_domain_page(page_to_mfn(page));
memset(l1tab, 0, PAGE_SIZE);
- l2e = l2tab[l2_table_offset(va)] =
+ l2e = l2tab[l2_table_offset(RO_MPT_VIRT_START)] =
l2e_from_page(page, __PAGE_HYPERVISOR);
}
else
@@ -1002,14 +995,13 @@ alloc_p2m_table(struct domain *d)
page = list_entry(list_ent, struct page_info, list);
mfn = page_to_mfn(page);
- if ( !(error = map_p2m_entry(l1tab, va, gpfn, mfn)) )
+ if ( !(error = map_p2m_entry(l1tab, gpfn, mfn)) )
{
domain_crash(d);
break;
}
list_ent = frame_table[mfn].list.next;
- va += sizeof(mfn);
}
unmap_domain_page(l1tab);
diff -r 5fa2cd68d059 -r b42b80403ddd xen/arch/x86/shadow_public.c
--- a/xen/arch/x86/shadow_public.c Thu Jul 27 13:17:17 2006 +0100
+++ b/xen/arch/x86/shadow_public.c Thu Jul 27 13:17:58 2006 +0100
@@ -1471,8 +1471,7 @@ int _shadow_mode_refcounts(struct domain
}
static int
-map_p2m_entry(pgentry_64_t *top_tab, unsigned long va,
- unsigned long gpfn, unsigned long mfn)
+map_p2m_entry(pgentry_64_t *top_tab, unsigned long gpfn, unsigned long mfn)
{
#if CONFIG_PAGING_LEVELS >= 4
pgentry_64_t l4e = { 0 };
@@ -1487,6 +1486,7 @@ map_p2m_entry(pgentry_64_t *top_tab, uns
l2_pgentry_t l2e = { 0 };
l1_pgentry_t l1e = { 0 };
struct page_info *page;
+ unsigned long va = RO_MPT_VIRT_START + (gpfn * sizeof(mfn));
#if CONFIG_PAGING_LEVELS >= 4
l4e = top_tab[l4_table_offset(va)];
@@ -1568,7 +1568,7 @@ map_p2m_entry(pgentry_64_t *top_tab, uns
unmap_domain_page(l1tab);
- l0tab[gpfn & ((PAGE_SIZE / sizeof (mfn)) - 1) ] = mfn;
+ l0tab[gpfn & ((PAGE_SIZE / sizeof(mfn)) - 1)] = mfn;
unmap_domain_page(l0tab);
@@ -1584,7 +1584,6 @@ set_p2m_entry(struct domain *d, unsigned
struct domain_mmap_cache *l1cache)
{
unsigned long tabmfn = pagetable_get_pfn(d->vcpu[0]->arch.monitor_table);
- unsigned long va = RO_MPT_VIRT_START + (gpfn * sizeof(unsigned long));
pgentry_64_t *top_tab;
int error;
@@ -1593,7 +1592,7 @@ set_p2m_entry(struct domain *d, unsigned
top_tab = map_domain_page_with_cache(tabmfn, l2cache);
- if ( !(error = map_p2m_entry(top_tab, va, gpfn, mfn)) )
+ if ( !(error = map_p2m_entry(top_tab, gpfn, mfn)) )
domain_crash(d);
unmap_domain_page_with_cache(top_tab, l2cache);
@@ -1605,10 +1604,9 @@ alloc_p2m_table(struct domain *d)
alloc_p2m_table(struct domain *d)
{
struct list_head *list_ent;
- unsigned long va = RO_MPT_VIRT_START; /* phys_to_machine_mapping */
pgentry_64_t *top_tab = NULL;
- unsigned long mfn;
- int gpfn, error = 0;
+ unsigned long gpfn, mfn;
+ int error = 0;
ASSERT( pagetable_get_pfn(d->vcpu[0]->arch.monitor_table) );
@@ -1624,14 +1622,13 @@ alloc_p2m_table(struct domain *d)
page = list_entry(list_ent, struct page_info, list);
mfn = page_to_mfn(page);
- if ( !(error = map_p2m_entry(top_tab, va, gpfn, mfn)) )
+ if ( !(error = map_p2m_entry(top_tab, gpfn, mfn)) )
{
domain_crash(d);
break;
}
list_ent = frame_table[mfn].list.next;
- va += sizeof(mfn);
}
unmap_domain_page(top_tab);
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