x86, asm, cleanup: Replace open-coded control register values with symbolic

Clean up an unnecessary open-coded control register values.

H. Peter Anvin committed 13 years ago

Commit a3d7b7d1 parent d1fbefc3 files · +3 −3Browse files

Unified · Split

3 files

arch/x86/kernel/cpu/mtrr/cyrix.c +1 −1
arch/x86/kernel/cpu/mtrr/generic.c +1 −1
arch/x86/kernel/relocate_kernel_32.S +1 −1

arch/x86/kernel/cpu/mtrr/cyrix.c+1−1

@@ -167,7 +167,7 @@ static void post_set(void) · 166 unmodified lines
167	167	setCx86(CX86_CCR3, ccr3);
168	168
169	169	/* Enable caches */
170		− write_cr0(read_cr0() & 0xbfffffff);
	170	+ write_cr0(read_cr0() & ~X86_CR0_CD);
171	171
172	172	/* Restore value of CR4 */
173	173	if (cpu_has_pge)

arch/x86/kernel/cpu/mtrr/generic.c+1−1

@@ -701,7 +701,7 @@ static void post_set(void) __releases(set_atomicity_lock) · 700 unmodified lines
701	701	mtrr_wrmsr(MSR_MTRRdefType, deftype_lo, deftype_hi);
702	702
703	703	/* Enable caches */
704		− write_cr0(read_cr0() & 0xbfffffff);
	704	+ write_cr0(read_cr0() & ~X86_CR0_CD);
705	705
706	706	/* Restore value of CR4 */
707	707	if (cpu_has_pge)

arch/x86/kernel/relocate_kernel_32.S+1−1

@@ -186,7 +186,7 @@ identity_mapped: · 185 unmodified lines
186	186	movl CP_PA_PGD(%ebx), %eax
187	187	movl %eax, %cr3
188	188	movl %cr0, %eax
189		− orl $(1<<31), %eax
	189	+ orl $X86_CR0_PG, %eax
190	190	movl %eax, %cr0
191	191	lea PAGE_SIZE(%edi), %esp
192	192	movl %edi, %eax