[PATCH 2/2] tlb/tlb_flushall_shift: add haswell tlb_flush_shift

[Alex Shi]

Tested on i5 4350U with munmap case, https://lkml.org/lkml/2012/5/17/59
The best performance is tlb_flush_shift = 1.
The balance point is 256 entries.

Signed-off-by: Alex Shi <alex.shi@xxxxxxxxx>
---
 arch/x86/kernel/cpu/intel.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 9a4bc51..ac9b83a 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -627,6 +627,7 @@ static void intel_tlb_flushall_shift_set(struct cpuinfo_x86 *c)
 		tlb_flushall_shift = 5;
 		break;
 	case 0x63a: /* Ivybridge */
+	case 0x645: /* Haswell */
 		tlb_flushall_shift = 1;
 		break;
 	case 0x63e: /* Ivybridge EP */
-- 
1.7.12

-- 
Thanks
    Alex
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