[PATCH] i386: Retrieve CLFLUSH size from CPUID

Also report it in /proc/cpuinfo similar to x86-64.

Needed for followon patch

Signed-off-by: Andi Kleen <ak@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index 6958ae5e2fa5..cda41aef79ad 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -309,6 +309,8 @@ static void __cpuinit generic_identify(struct cpuinfo_x86 * c)
 #else
                         c->apicid = (ebx >> 24) & 0xFF;
 #endif
+                        if (c->x86_capability[0] & (1<<19))
+                                c->x86_clflush_size = ((ebx >> 8) & 0xff) * 8;
                 } else {
                         /* Have CPUID level 0 only - unheard of */
                         c->x86 = 4;
@@ -373,6 +375,7 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
         c->x86_vendor_id[0] = '\0'; /* Unset */
         c->x86_model_id[0] = '\0';  /* Unset */
         c->x86_max_cores = 1;
+        c->x86_clflush_size = 32;
         memset(&c->x86_capability, 0, sizeof c->x86_capability);
 
         if (!have_cpuid_p()) {