Mailing List Archive

# HG changeset patch
# User Keir Fraser <keir@xen.org>
# Date 1299174404 0
# Node ID de49500f344adb3b8fa240ec1d43bedc7f216ce5
# Parent 9dfd7ffcd76c70191dcca9be0820483baa6cafa3
x86, libxc: Fix xc_translate_foreign_address() for PV guests of
different bitness than dom0 (32-bit vs 64-bit).

Original patch by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Keir Fraser <keir@xen.org>
---


diff -r 9dfd7ffcd76c -r de49500f344a tools/include/xen-foreign/structs.py
--- a/tools/include/xen-foreign/structs.py Thu Mar 03 15:14:30 2011 +0000
+++ b/tools/include/xen-foreign/structs.py Thu Mar 03 17:46:44 2011 +0000
@@ -53,6 +53,7 @@

# all archs
"xen_pfn_to_cr3",
+ "xen_cr3_to_pfn",
"XEN_LEGACY_MAX_VCPUS",
"MAX_GUEST_CMDLINE" ];

diff -r 9dfd7ffcd76c -r de49500f344a tools/libxc/xc_pagetab.c
--- a/tools/libxc/xc_pagetab.c Thu Mar 03 15:14:30 2011 +0000
+++ b/tools/libxc/xc_pagetab.c Thu Mar 03 17:46:44 2011 +0000
@@ -61,11 +61,12 @@
return 0;
if (domctl.u.address_size.size == 64) {
pt_levels = 4;
- paddr = ctx.x64.ctrlreg[3] & ~0xfffull;
+ paddr = (uint64_t)xen_cr3_to_pfn_x86_64(ctx.x64.ctrlreg[3])
+ << PAGE_SHIFT;
} else {
pt_levels = 3;
- paddr = (((uint64_t) xen_cr3_to_pfn(ctx.x32.ctrlreg[3]))
- << PAGE_SHIFT);
+ paddr = (uint64_t)xen_cr3_to_pfn_x86_32(ctx.x32.ctrlreg[3])
+ << PAGE_SHIFT;
}
}


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