C++ (Cpp) __arch_local_irq_stnsm Examples

Example #1

File: machine_kexec.c Project: AllenWeb/linux

/*
 * Check if kdump checksums are valid: We call purgatory with parameter "0"
 */
static int kdump_csum_valid(struct kimage *image)
{
#ifdef CONFIG_CRASH_DUMP
	int (*start_kdump)(int) = (void *)image->start;
	int rc;

	__arch_local_irq_stnsm(0xfb); /* disable DAT */
	rc = start_kdump(0);
	__arch_local_irq_stosm(0x04); /* enable DAT */
	return rc ? 0 : -EINVAL;
#else
	return -EINVAL;
#endif
}

Example #2

File: mem_detect.c Project: CSCLOG/beaglebone

void detect_memory_layout(struct mem_chunk chunk[])
{
	unsigned long flags, cr0;

	memset(chunk, 0, MEMORY_CHUNKS * sizeof(struct mem_chunk));
	/* Disable IRQs, DAT and low address protection so tprot does the
	 * right thing and we don't get scheduled away with low address
	 * protection disabled.
	 */
	flags = __arch_local_irq_stnsm(0xf8);
	__ctl_store(cr0, 0, 0);
	__ctl_clear_bit(0, 28);
	find_memory_chunks(chunk);
	__ctl_load(cr0, 0, 0);
	arch_local_irq_restore(flags);
}