tree e12df109d13f46438190d8c75e2238f0ff5aa8a8
parent 3826a372e4aafac1dba9ba3434e7c2f76775de42
author Paolo Bonzini <pbonzini@redhat.com> 1712053557 +0200
committer Paolo Bonzini <pbonzini@redhat.com> 1712074139 +0200

vga: adjust dirty memory region if pel panning is active

When pel panning is active, one more byte is read from each of the VGA
memory planes.  This has to be accounted in the computation of region_end,
otherwise vga_draw_graphic() fails an assertion:

qemu-system-i386: ../system/physmem.c:946: cpu_physical_memory_snapshot_get_dirty: Assertion `start + length <= snap->end' failed.

Reported-by: Helge Konetzka <hk@zapateado.de>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2244
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>