# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1204711331 0
# Node ID f22cadec48feec2024028b5bb7e729e5ce9d033b
# Parent 4f62147e39e89c189ca8d996a8ee6eb6e41bc6c6
x86: make show_page_walk() more robust.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
xen-unstable changeset: 16879:1a2f557448cf5de825d40e550140637961d2eb46
xen-unstable date: Thu Jan 24 18:11:44 2008 +0000
---
xen/arch/x86/x86_32/traps.c | 6 +++---
xen/arch/x86/x86_64/traps.c | 8 ++++----
2 files changed, 7 insertions(+), 7 deletions(-)
diff -r 4f62147e39e8 -r f22cadec48fe xen/arch/x86/x86_32/traps.c
--- a/xen/arch/x86/x86_32/traps.c Mon Mar 03 13:40:08 2008 +0000
+++ b/xen/arch/x86/x86_32/traps.c Wed Mar 05 10:02:11 2008 +0000
@@ -132,7 +132,7 @@ void show_page_walk(unsigned long addr)
l3t += (cr3 & 0xFE0UL) >> 3;
l3e = l3t[l3_table_offset(addr)];
mfn = l3e_get_pfn(l3e);
- pfn = get_gpfn_from_mfn(mfn);
+ pfn = mfn_valid(mfn) ? get_gpfn_from_mfn(mfn) : INVALID_M2P_ENTRY;
printk(" L3[0x%03lx] = %"PRIpte" %08lx\n",
l3_table_offset(addr), l3e_get_intpte(l3e), pfn);
unmap_domain_page(l3t);
@@ -143,7 +143,7 @@ void show_page_walk(unsigned long addr)
l2t = map_domain_page(mfn);
l2e = l2t[l2_table_offset(addr)];
mfn = l2e_get_pfn(l2e);
- pfn = get_gpfn_from_mfn(mfn);
+ pfn = mfn_valid(mfn) ? get_gpfn_from_mfn(mfn) : INVALID_M2P_ENTRY;
printk(" L2[0x%03lx] = %"PRIpte" %08lx %s\n",
l2_table_offset(addr), l2e_get_intpte(l2e), pfn,
(l2e_get_flags(l2e) & _PAGE_PSE) ? "(PSE)" : "");
@@ -155,7 +155,7 @@ void show_page_walk(unsigned long addr)
l1t = map_domain_page(mfn);
l1e = l1t[l1_table_offset(addr)];
mfn = l1e_get_pfn(l1e);
- pfn = get_gpfn_from_mfn(mfn);
+ pfn = mfn_valid(mfn) ? get_gpfn_from_mfn(mfn) : INVALID_M2P_ENTRY;
printk(" L1[0x%03lx] = %"PRIpte" %08lx\n",
l1_table_offset(addr), l1e_get_intpte(l1e), pfn);
unmap_domain_page(l1t);
diff -r 4f62147e39e8 -r f22cadec48fe xen/arch/x86/x86_64/traps.c
--- a/xen/arch/x86/x86_64/traps.c Mon Mar 03 13:40:08 2008 +0000
+++ b/xen/arch/x86/x86_64/traps.c Wed Mar 05 10:02:11 2008 +0000
@@ -136,7 +136,7 @@ void show_page_walk(unsigned long addr)
l4t = mfn_to_virt(mfn);
l4e = l4t[l4_table_offset(addr)];
mfn = l4e_get_pfn(l4e);
- pfn = get_gpfn_from_mfn(mfn);
+ pfn = mfn_valid(mfn) ? get_gpfn_from_mfn(mfn) : INVALID_M2P_ENTRY;
printk(" L4[0x%03lx] = %"PRIpte" %016lx\n",
l4_table_offset(addr), l4e_get_intpte(l4e), pfn);
if ( !(l4e_get_flags(l4e) & _PAGE_PRESENT) )
@@ -145,7 +145,7 @@ void show_page_walk(unsigned long addr)
l3t = mfn_to_virt(mfn);
l3e = l3t[l3_table_offset(addr)];
mfn = l3e_get_pfn(l3e);
- pfn = get_gpfn_from_mfn(mfn);
+ pfn = mfn_valid(mfn) ? get_gpfn_from_mfn(mfn) : INVALID_M2P_ENTRY;
printk(" L3[0x%03lx] = %"PRIpte" %016lx\n",
l3_table_offset(addr), l3e_get_intpte(l3e), pfn);
if ( !(l3e_get_flags(l3e) & _PAGE_PRESENT) )
@@ -154,7 +154,7 @@ void show_page_walk(unsigned long addr)
l2t = mfn_to_virt(mfn);
l2e = l2t[l2_table_offset(addr)];
mfn = l2e_get_pfn(l2e);
- pfn = get_gpfn_from_mfn(mfn);
+ pfn = mfn_valid(mfn) ? get_gpfn_from_mfn(mfn) : INVALID_M2P_ENTRY;
printk(" L2[0x%03lx] = %"PRIpte" %016lx %s\n",
l2_table_offset(addr), l2e_get_intpte(l2e), pfn,
(l2e_get_flags(l2e) & _PAGE_PSE) ? "(PSE)" : "");
@@ -165,7 +165,7 @@ void show_page_walk(unsigned long addr)
l1t = mfn_to_virt(mfn);
l1e = l1t[l1_table_offset(addr)];
mfn = l1e_get_pfn(l1e);
- pfn = get_gpfn_from_mfn(mfn);
+ pfn = mfn_valid(mfn) ? get_gpfn_from_mfn(mfn) : INVALID_M2P_ENTRY;
printk(" L1[0x%03lx] = %"PRIpte" %016lx\n",
l1_table_offset(addr), l1e_get_intpte(l1e), pfn);
}
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