The current byte sequence is '0xcc' which makes sense on x86, but on ARM it is:
cccccccc stclgt 12, cr12, [ip], {204} ; 0xcc Picking something more ARM applicable such as: efefefef svc 0x00efefef Creates a nice crash if one executes that code: (XEN) CPU1: Unexpected Trap: Supervisor Call We don't have to worry about Thumb code so this instruction is a safe to execute. Signed-off-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com> --- Cc: Julien Grall <julien.gr...@arm.com> Cc: Stefano Stabellini <sstabell...@kernel.org> --- xen/arch/arm/mm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c index 07e2037..0fa5623 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -995,7 +995,7 @@ void free_init_memory(void) paddr_t pa = virt_to_maddr(__init_begin); unsigned long len = __init_end - __init_begin; set_pte_flags_on_range(__init_begin, len, mg_rw); - memset(__init_begin, 0xcc, len); + memset(__init_begin, 0xef, len); set_pte_flags_on_range(__init_begin, len, mg_clear); init_domheap_pages(pa, pa + len); printk("Freed %ldkB init memory.\n", (long)(__init_end-__init_begin)>>10); -- 2.4.11 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel