x86: handle PAT more like other CPU features

Impact: Cleanup

When PAT was originally introduced, it was handled specially for a few
reasons:

- PAT bugs are hard to track down, so we wanted to maintain a
  whitelist of CPUs.
- The i386 and x86-64 CPUID code was not yet unified.

Both of these are now obsolete, so handle PAT like any other features,
including ordinary feature blacklisting due to known bugs.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

1 files changed, 0 insertions, 2 deletions

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 83492b1f93b1..0f8656361e04 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -570,8 +570,6 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
         if (this_cpu->c_early_init)
                 this_cpu->c_early_init(c);
 
-        validate_pat_support(c);
-
 #ifdef CONFIG_SMP
         c->cpu_index = boot_cpu_id;
 #endif