They're expensive, and nothing changes if MTRRs are disabled and any of
the ranges gets changed, or if fixed range MTRRs are disabled and any of
them gets changed.
Signed-off-by: Jan Beulich <jbeul...@suse.com>
--- a/xen/arch/x86/hvm/mtrr.c
+++ b/xen/arch/x86/hvm/mtrr.c
@@ -472,7 +472,9 @@ bool_t mtrr_fix_range_msr_set(struct dom
return 0;
fixed_range_base[row] = msr_content;
- memory_type_changed(d);
+
+ if ( m->enabled && m->fixed_enabled )
+ memory_type_changed(d);
}
return 1;
@@ -515,7 +517,8 @@ bool_t mtrr_var_range_msr_set(
m->overlapped = is_var_mtrr_overlapped(m);
- memory_type_changed(d);
+ if ( m->enabled )
+ memory_type_changed(d);
return 1;
}
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel
