mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 18:21:39 +01:00
Gcc 11 looks to make incorrect assumptions about valid ranges that pointers may be used for addressing when they are derived from e.g. a plain constant. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100680. Utilize RELOC_HIDE() to work around the issue, which for x86 manifests in at least - mpparse.c:efi_check_config(), - tboot.c:tboot_probe(), - tboot.c:tboot_gen_frametable_integrity(), - x86_emulate.c:x86_emulate() (at -O2 only). The last case is particularly odd not just because it only triggers at higher optimization levels, but also because it only affects one of at least three similar constructs. Various "note" diagnostics claim the valid index range to be [0, 2⁶³-1]. Signed-off-by: Jan Beulich <jbeulich@suse.com> Tested-by: Jason Andryuk <jandryuk@gmail.com> Acked-by: Roger Pau Monné <roger.pau@citrix.com>