C++ (Cpp) clear_in_cr4 Exemples

Exemple #1

Fichier : enlighten.c Projet : argentinos/o2droid

static __init void xen_init_cpuid_mask(void)
{
	unsigned int ax, bx, cx, dx;

	cpuid_leaf1_edx_mask =
		~((1 << X86_FEATURE_MCE)  |  /* disable MCE */
		  (1 << X86_FEATURE_MCA)  |  /* disable MCA */
		  (1 << X86_FEATURE_ACC));   /* thermal monitoring */

	if (!xen_initial_domain())
		cpuid_leaf1_edx_mask &=
			~((1 << X86_FEATURE_APIC) |  /* disable local APIC */
			  (1 << X86_FEATURE_ACPI));  /* disable ACPI */

	ax = 1;
	cx = 0;
	xen_cpuid(&ax, &bx, &cx, &dx);

	/* cpuid claims we support xsave; try enabling it to see what happens */
	if (cx & (1 << (X86_FEATURE_XSAVE % 32))) {
		unsigned long cr4;

		set_in_cr4(X86_CR4_OSXSAVE);
		
		cr4 = read_cr4();

		if ((cr4 & X86_CR4_OSXSAVE) == 0)
			cpuid_leaf1_ecx_mask &= ~(1 << (X86_FEATURE_XSAVE % 32));

		clear_in_cr4(X86_CR4_OSXSAVE);
	}
}

Exemple #2

Fichier : mce_32.c Projet : 274914765/C

void __init stop_mce(void)
{
    old_cr4 = read_cr4();
    clear_in_cr4(X86_CR4_MCE);
}

Exemple #3

Fichier : cr4_pce_enable.c Projet : cslab-ntua/csx

static void cr4_pce_disable(void *arg)
{
	clear_in_cr4(X86_CR4_PCE);
}