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

Clean up an unnecessary open-coded control register values.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/n/tip-um7za1nzf6brb17o0h4om6e3@git.kernel.org

diff --git a/arch/x86/kernel/cpu/mtrr/cyrix.c b/arch/x86/kernel/cpu/mtrr/cyrix.c
index 68a3343..9e451b0 100644 (file)
--- a/arch/x86/kernel/cpu/mtrr/cyrix.c
+++ b/arch/x86/kernel/cpu/mtrr/cyrix.c
@@ -167,7 +167,7 @@ static void post_set(void)
        setCx86(CX86_CCR3, ccr3);
 
        /* Enable caches */
-       write_cr0(read_cr0() & 0xbfffffff);
+       write_cr0(read_cr0() & ~X86_CR0_CD);
 
        /* Restore value of CR4 */
        if (cpu_has_pge)

diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c
index fa72a39..00f557b 100644 (file)
--- a/arch/x86/kernel/cpu/mtrr/generic.c
+++ b/arch/x86/kernel/cpu/mtrr/generic.c
@@ -701,7 +701,7 @@ static void post_set(void) __releases(set_atomicity_lock)
        mtrr_wrmsr(MSR_MTRRdefType, deftype_lo, deftype_hi);
 
        /* Enable caches */
-       write_cr0(read_cr0() & 0xbfffffff);
+       write_cr0(read_cr0() & ~X86_CR0_CD);
 
        /* Restore value of CR4 */
        if (cpu_has_pge)

diff --git a/arch/x86/kernel/relocate_kernel_32.S b/arch/x86/kernel/relocate_kernel_32.S
index 36818f8..e13f8e7 100644 (file)
--- a/arch/x86/kernel/relocate_kernel_32.S
+++ b/arch/x86/kernel/relocate_kernel_32.S
@@ -186,7 +186,7 @@ identity_mapped:
        movl    CP_PA_PGD(%ebx), %eax
        movl    %eax, %cr3
        movl    %cr0, %eax
-       orl     $(1<<31), %eax
+       orl     $X86_CR0_PG, %eax
        movl    %eax, %cr0
        lea     PAGE_SIZE(%edi), %esp
        movl    %edi, %eax