# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID fdc26ec44145cecc52518bc790e0611e831259f5
# Parent 90a8ab269afe539f87ee4e50607a88ccfbccf3fe
[PAE] Fix tools to properly pack/unpack >4GB PAE CR3 values.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
tools/debugger/libxendebug/xendebug.c | 5 +++--
tools/libxc/xc_linux_build.c | 18 +++++++++---------
tools/libxc/xc_linux_restore.c | 4 ++--
tools/libxc/xc_linux_save.c | 6 +++---
tools/libxc/xc_pagetab.c | 2 +-
tools/libxc/xc_ptrace.c | 11 +++++++----
tools/libxc/xc_ptrace_core.c | 15 +++++++--------
7 files changed, 32 insertions(+), 29 deletions(-)
diff -r 90a8ab269afe -r fdc26ec44145 tools/debugger/libxendebug/xendebug.c
--- a/tools/debugger/libxendebug/xendebug.c Fri Jun 02 13:36:29 2006 +0100
+++ b/tools/debugger/libxendebug/xendebug.c Fri Jun 02 14:16:43 2006 +0100
@@ -346,8 +346,9 @@ xendebug_memory_page (domain_context_p c
ctxt->cr3_phys[vcpu] = vcpu_ctxt->ctrlreg[3];
if ( ctxt->cr3_virt[vcpu] )
munmap(ctxt->cr3_virt[vcpu], PAGE_SIZE);
- ctxt->cr3_virt[vcpu] = xc_map_foreign_range(xc_handle, ctxt->domid,
- PAGE_SIZE, PROT_READ, ctxt->cr3_phys[vcpu] >> PAGE_SHIFT);
+ ctxt->cr3_virt[vcpu] = xc_map_foreign_range(
+ xc_handle, ctxt->domid, PAGE_SIZE, PROT_READ,
+ xen_cr3_to_pfn(ctxt->cr3_phys[vcpu]));
if ( ctxt->cr3_virt[vcpu] == NULL )
return 0;
}
diff -r 90a8ab269afe -r fdc26ec44145 tools/libxc/xc_linux_build.c
--- a/tools/libxc/xc_linux_build.c Fri Jun 02 13:36:29 2006 +0100
+++ b/tools/libxc/xc_linux_build.c Fri Jun 02 14:16:43 2006 +0100
@@ -205,9 +205,9 @@ static int setup_pg_tables(int xc_handle
alloc_pt(l2tab, vl2tab, pl2tab);
vl2e = &vl2tab[l2_table_offset(dsi_v_start)];
if (shadow_mode_enabled)
- ctxt->ctrlreg[3] = pl2tab;
+ ctxt->ctrlreg[3] = xen_pfn_to_cr3(pl2tab >> PAGE_SHIFT);
else
- ctxt->ctrlreg[3] = l2tab;
+ ctxt->ctrlreg[3] = xen_pfn_to_cr3(l2tab >> PAGE_SHIFT);
for ( count = 0; count < ((v_end - dsi_v_start) >> PAGE_SHIFT); count++ )
{
@@ -268,9 +268,9 @@ static int setup_pg_tables_pae(int xc_ha
alloc_pt(l3tab, vl3tab, pl3tab);
vl3e = &vl3tab[l3_table_offset_pae(dsi_v_start)];
if (shadow_mode_enabled)
- ctxt->ctrlreg[3] = pl3tab;
+ ctxt->ctrlreg[3] = xen_pfn_to_cr3(pl3tab >> PAGE_SHIFT);
else
- ctxt->ctrlreg[3] = l3tab;
+ ctxt->ctrlreg[3] = xen_pfn_to_cr3(l3tab >> PAGE_SHIFT);
for ( count = 0; count < ((v_end - dsi_v_start) >> PAGE_SHIFT); count++)
{
@@ -361,9 +361,9 @@ static int setup_pg_tables_64(int xc_han
alloc_pt(l4tab, vl4tab, pl4tab);
vl4e = &vl4tab[l4_table_offset(dsi_v_start)];
if (shadow_mode_enabled)
- ctxt->ctrlreg[3] = pl4tab;
+ ctxt->ctrlreg[3] = xen_pfn_to_cr3(pl4tab >> PAGE_SHIFT);
else
- ctxt->ctrlreg[3] = l4tab;
+ ctxt->ctrlreg[3] = xen_pfn_to_cr3(l4tab >> PAGE_SHIFT);
for ( count = 0; count < ((v_end-dsi_v_start)>>PAGE_SHIFT); count++)
{
@@ -827,13 +827,13 @@ static int setup_guest(int xc_handle,
if ( dsi.pae_kernel )
{
if ( pin_table(xc_handle, MMUEXT_PIN_L3_TABLE,
- ctxt->ctrlreg[3] >> PAGE_SHIFT, dom) )
+ xen_cr3_to_pfn(ctxt->ctrlreg[3]), dom) )
goto error_out;
}
else
{
if ( pin_table(xc_handle, MMUEXT_PIN_L2_TABLE,
- ctxt->ctrlreg[3] >> PAGE_SHIFT, dom) )
+ xen_cr3_to_pfn(ctxt->ctrlreg[3]), dom) )
goto error_out;
}
}
@@ -845,7 +845,7 @@ static int setup_guest(int xc_handle,
* correct protection for the page
*/
if ( pin_table(xc_handle, MMUEXT_PIN_L4_TABLE,
- ctxt->ctrlreg[3] >> PAGE_SHIFT, dom) )
+ xen_cr3_to_pfn(ctxt->ctrlreg[3]), dom) )
goto error_out;
#endif
diff -r 90a8ab269afe -r fdc26ec44145 tools/libxc/xc_linux_restore.c
--- a/tools/libxc/xc_linux_restore.c Fri Jun 02 13:36:29 2006 +0100
+++ b/tools/libxc/xc_linux_restore.c Fri Jun 02 14:16:43 2006 +0100
@@ -536,7 +536,7 @@ int xc_linux_restore(int xc_handle, int
}
/* Uncanonicalise the page table base pointer. */
- pfn = ctxt.ctrlreg[3] >> PAGE_SHIFT;
+ pfn = xen_cr3_to_pfn(ctxt.ctrlreg[3]);
if (pfn >= max_pfn) {
ERR("PT base is bad: pfn=%lu max_pfn=%lu type=%08lx",
@@ -552,7 +552,7 @@ int xc_linux_restore(int xc_handle, int
goto out;
}
- ctxt.ctrlreg[3] = p2m[pfn] << PAGE_SHIFT;
+ ctxt.ctrlreg[3] = xen_pfn_to_cr3(p2m[pfn]);
/* clear any pending events and the selector */
memset(&(shared_info->evtchn_pending[0]), 0,
diff -r 90a8ab269afe -r fdc26ec44145 tools/libxc/xc_linux_save.c
--- a/tools/libxc/xc_linux_save.c Fri Jun 02 13:36:29 2006 +0100
+++ b/tools/libxc/xc_linux_save.c Fri Jun 02 14:16:43 2006 +0100
@@ -1129,12 +1129,12 @@ int xc_linux_save(int xc_handle, int io_
}
/* Canonicalise the page table base pointer. */
- if ( !MFN_IS_IN_PSEUDOPHYS_MAP(ctxt.ctrlreg[3] >> PAGE_SHIFT) ) {
+ if ( !MFN_IS_IN_PSEUDOPHYS_MAP(xen_cr3_to_pfn(ctxt.ctrlreg[3])) ) {
ERR("PT base is not in range of pseudophys map");
goto out;
}
- ctxt.ctrlreg[3] = mfn_to_pfn(ctxt.ctrlreg[3] >> PAGE_SHIFT) <<
- PAGE_SHIFT;
+ ctxt.ctrlreg[3] =
+ xen_pfn_to_cr3(mfn_to_pfn(xen_cr3_to_pfn(ctxt.ctrlreg[3])));
if (!write_exact(io_fd, &ctxt, sizeof(ctxt)) ||
!write_exact(io_fd, live_shinfo, PAGE_SIZE)) {
diff -r 90a8ab269afe -r fdc26ec44145 tools/libxc/xc_pagetab.c
--- a/tools/libxc/xc_pagetab.c Fri Jun 02 13:36:29 2006 +0100
+++ b/tools/libxc/xc_pagetab.c Fri Jun 02 14:16:43 2006 +0100
@@ -78,7 +78,7 @@ unsigned long xc_translate_foreign_addre
fprintf(stderr, "failed to retreive vcpu context\n");
goto out;
}
- cr3 = ctx.ctrlreg[3];
+ cr3 = ((unsigned long long)xen_cr3_to_pfn(ctx.ctrlreg[3])) << PAGE_SHIFT;
/* Page Map Level 4 */
diff -r 90a8ab269afe -r fdc26ec44145 tools/libxc/xc_ptrace.c
--- a/tools/libxc/xc_ptrace.c Fri Jun 02 13:36:29 2006 +0100
+++ b/tools/libxc/xc_ptrace.c Fri Jun 02 14:16:43 2006 +0100
@@ -190,7 +190,8 @@ map_domain_va_32(
static void *v[MAX_VIRT_CPUS];
l2 = xc_map_foreign_range(
- xc_handle, current_domid, PAGE_SIZE, PROT_READ, ctxt[cpu].ctrlreg[3]
>> PAGE_SHIFT);
+ xc_handle, current_domid, PAGE_SIZE, PROT_READ,
+ xen_cr3_to_pfn(ctxt[cpu].ctrlreg[3]));
if ( l2 == NULL )
return NULL;
@@ -230,7 +231,8 @@ map_domain_va_pae(
static void *v[MAX_VIRT_CPUS];
l3 = xc_map_foreign_range(
- xc_handle, current_domid, PAGE_SIZE, PROT_READ, ctxt[cpu].ctrlreg[3]
>> PAGE_SHIFT);
+ xc_handle, current_domid, PAGE_SIZE, PROT_READ,
+ xen_cr3_to_pfn(ctxt[cpu].ctrlreg[3]));
if ( l3 == NULL )
return NULL;
@@ -282,8 +284,9 @@ map_domain_va_64(
if ((ctxt[cpu].ctrlreg[4] & 0x20) == 0 ) /* legacy ia32 mode */
return map_domain_va_32(xc_handle, cpu, guest_va, perm);
- l4 = xc_map_foreign_range( xc_handle, current_domid, PAGE_SIZE,
- PROT_READ, ctxt[cpu].ctrlreg[3] >> PAGE_SHIFT);
+ l4 = xc_map_foreign_range(
+ xc_handle, current_domid, PAGE_SIZE, PROT_READ,
+ xen_cr3_to_pfn(ctxt[cpu].ctrlreg[3]));
if ( l4 == NULL )
return NULL;
diff -r 90a8ab269afe -r fdc26ec44145 tools/libxc/xc_ptrace_core.c
--- a/tools/libxc/xc_ptrace_core.c Fri Jun 02 13:36:29 2006 +0100
+++ b/tools/libxc/xc_ptrace_core.c Fri Jun 02 14:16:43 2006 +0100
@@ -12,8 +12,8 @@ static long nr_pages = 0;
static long nr_pages = 0;
static unsigned long *p2m_array = NULL;
static unsigned long *m2p_array = NULL;
-static unsigned long pages_offset;
-static unsigned long cr3[MAX_VIRT_CPUS];
+static unsigned long pages_offset;
+static unsigned long cr3[MAX_VIRT_CPUS];
/* --------------------- */
@@ -47,7 +47,7 @@ map_domain_va_core(unsigned long domfd,
munmap(cr3_virt[cpu], PAGE_SIZE);
v = mmap(
NULL, PAGE_SIZE, PROT_READ, MAP_PRIVATE, domfd,
- map_mtop_offset(cr3_phys[cpu]));
+ map_mtop_offset(xen_cr3_to_pfn(cr3_phys[cpu])));
if (v == MAP_FAILED)
{
perror("mmap failed");
@@ -127,14 +127,15 @@ xc_waitdomain_core(
sizeof(vcpu_guest_context_t)*nr_vcpus)
return -1;
- for (i = 0; i < nr_vcpus; i++) {
+ for (i = 0; i < nr_vcpus; i++)
cr3[i] = ctxt[i].ctrlreg[3];
- }
+
if ((p2m_array = malloc(nr_pages * sizeof(unsigned long))) == NULL)
{
printf("Could not allocate p2m_array\n");
return -1;
}
+
if (read(domfd, p2m_array, sizeof(unsigned long)*nr_pages) !=
sizeof(unsigned long)*nr_pages)
return -1;
@@ -146,10 +147,8 @@ xc_waitdomain_core(
}
bzero(m2p_array, sizeof(unsigned long)* 1 << 20);
- for (i = 0; i < nr_pages; i++) {
+ for (i = 0; i < nr_pages; i++)
m2p_array[p2m_array[i]] = i;
- }
-
}
return 0;
}
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