It is wrong for us to check the base address when there's no LDT in the
first place.
Signed-off-by: Jan Beulich <jbeul...@suse.com>
---
TBD: I also wonder whether we wouldn't better set v->arch.pv.ldt_base to
zero for an empty LDT, just like do_mmuext_op() does.
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -989,8 +989,9 @@ int arch_set_info_guest(
for ( i = 0; !fail && i < nr_gdt_frames; ++i )
fail |= v->arch.pv.gdt_frames[i] != c(gdt_frames[i]);
- fail |= v->arch.pv.ldt_base != c(ldt_base);
fail |= v->arch.pv.ldt_ents != c(ldt_ents);
+ if ( v->arch.pv.ldt_ents )
+ fail |= v->arch.pv.ldt_base != c(ldt_base);
if ( fail )
return -EOPNOTSUPP;
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