Commit 2774c6d0 authored by Avi Kivity's avatar Avi Kivity
Browse files

Fix wrong region_offset when overlaying a page with another 



cpu_register_physical_memory_log() does not update region_offset
if a page was previously registered for the same address.  This
could cause mmio accesses going to the wrong place, by using the
old region_offset.

Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
Acked-by: default avatarAndreas Färber <afaerber@suse.de>
Reviewed-by: default avatarRichard Henderson <rth@twiddle.net>
parent 26a83ad0

exec.c

+1 −0
Original line number Diff line number Diff line
@@ -2542,6 +2542,7 @@ void cpu_register_physical_memory_log(target_phys_addr_t start_addr, 
                p->region_offset = 0;

            } else {

                p->phys_offset = phys_offset;

                p->region_offset = region_offset;

                if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM ||

                    (phys_offset & IO_MEM_ROMD))

                    phys_offset += TARGET_PAGE_SIZE;