diff options
| author | Jan Beulich <jbeulich@suse.com> | 2013-01-23 14:11:39 +0100 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2013-01-23 14:11:39 +0100 |
| commit | bad20150553601964143dff43d932accceba3e5e (patch) | |
| tree | 7185f1c557326846a774513a38ae276d9e3e279a /xen/arch/x86/x86_64/traps.c | |
| parent | b52f69ab85a35d6140ca5e8ec74240fb1e0a5e7e (diff) | |
| download | xen-bad20150553601964143dff43d932accceba3e5e.tar.gz xen-bad20150553601964143dff43d932accceba3e5e.tar.bz2 xen-bad20150553601964143dff43d932accceba3e5e.zip | |
x86: properly use map_domain_page() during page table manipulation
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Keir Fraser <keir@xen.org>
Diffstat (limited to 'xen/arch/x86/x86_64/traps.c')
| -rw-r--r-- | xen/arch/x86/x86_64/traps.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/xen/arch/x86/x86_64/traps.c b/xen/arch/x86/x86_64/traps.c index 43a6f2ef76..8a1d912110 100644 --- a/xen/arch/x86/x86_64/traps.c +++ b/xen/arch/x86/x86_64/traps.c @@ -175,8 +175,9 @@ void show_page_walk(unsigned long addr) printk("Pagetable walk from %016lx:\n", addr); - l4t = mfn_to_virt(mfn); + l4t = map_domain_page(mfn); l4e = l4t[l4_table_offset(addr)]; + unmap_domain_page(l4t); mfn = l4e_get_pfn(l4e); pfn = mfn_valid(mfn) && machine_to_phys_mapping_valid ? get_gpfn_from_mfn(mfn) : INVALID_M2P_ENTRY; @@ -186,8 +187,9 @@ void show_page_walk(unsigned long addr) !mfn_valid(mfn) ) return; - l3t = mfn_to_virt(mfn); + l3t = map_domain_page(mfn); l3e = l3t[l3_table_offset(addr)]; + unmap_domain_page(l3t); mfn = l3e_get_pfn(l3e); pfn = mfn_valid(mfn) && machine_to_phys_mapping_valid ? get_gpfn_from_mfn(mfn) : INVALID_M2P_ENTRY; @@ -199,8 +201,9 @@ void show_page_walk(unsigned long addr) !mfn_valid(mfn) ) return; - l2t = mfn_to_virt(mfn); + l2t = map_domain_page(mfn); l2e = l2t[l2_table_offset(addr)]; + unmap_domain_page(l2t); mfn = l2e_get_pfn(l2e); pfn = mfn_valid(mfn) && machine_to_phys_mapping_valid ? get_gpfn_from_mfn(mfn) : INVALID_M2P_ENTRY; @@ -212,8 +215,9 @@ void show_page_walk(unsigned long addr) !mfn_valid(mfn) ) return; - l1t = mfn_to_virt(mfn); + l1t = map_domain_page(mfn); l1e = l1t[l1_table_offset(addr)]; + unmap_domain_page(l1t); mfn = l1e_get_pfn(l1e); pfn = mfn_valid(mfn) && machine_to_phys_mapping_valid ? get_gpfn_from_mfn(mfn) : INVALID_M2P_ENTRY; |