SCRATCH_SIZE
emit(ARM_SUB_I(bpf_r1[1], ARM_SP, SCRATCH_SIZE), ctx);
#define _STACK_SIZE (ctx->prog->aux->stack_depth + SCRATCH_SIZE)
EMIT3(0x83, add_1reg(0xE8, IA32_EBP), SCRATCH_SIZE + 12);
EMIT3(0x83, add_1reg(0xC0, IA32_EBP), SCRATCH_SIZE + 12);
#define _STACK_SIZE (stack_depth + SCRATCH_SIZE)
const int SCRATCH_SIZE = PAGE_SIZE;
u8 *scratch = kmalloc(SCRATCH_SIZE, GFP_KERNEL);
u8 *end_work = scratch + SCRATCH_SIZE;
if (WARN(work - scratch + pub_len + priv_len + 14 > SCRATCH_SIZE,