__2M_rwdata_end marks the first byte after the Xen image, not its last
byte. Subtract 1 to obtain the upper bound to compare against. (Note
that instead switching from <= to < is less desirable, as in principle
__pa() might return rubbish for addresses outside of the Xen image.)
Since the & needs to be dropped from the line in question, also drop it
from the adjacent one.
Reported-by: Julien Grall <julien.gr...@arm.com>
Signed-off-by: Jan Beulich <jbeul...@suse.com>
---
Since the Arm side equivalent was taken for 4.13, this one should at
least be considered as well.
--- a/xen/include/asm-x86/mm.h
+++ b/xen/include/asm-x86/mm.h
@@ -285,8 +285,8 @@ struct page_info
#define is_xen_heap_mfn(mfn) \
(mfn_valid(mfn) && is_xen_heap_page(mfn_to_page(mfn)))
#define is_xen_fixed_mfn(mfn) \
- (((mfn_to_maddr(mfn)) >= __pa(&_stext)) && \
- ((mfn_to_maddr(mfn)) <= __pa(&__2M_rwdata_end)))
+ (((mfn_to_maddr(mfn)) >= __pa(_stext)) && \
+ ((mfn_to_maddr(mfn)) <= __pa(__2M_rwdata_end - 1)))
#define PRtype_info "016lx"/* should only be used for printk's */
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