[PATCH v2 13/17] x86/pat: Replace Intel x86_model checks with VFM ones

[Sohil Mehta]

Introduce markers and names for some Family 6 and Family 15 models and
replace x86_model checks with VFM ones.

Signed-off-by: Sohil Mehta <sohil.mehta@xxxxxxxxx>

---

v2: Get rid of the INTEL_FAM15_START IFM(15, 0x00) define.

---
 arch/x86/include/asm/intel-family.h | 1 +
 arch/x86/mm/pat/memtype.c           | 7 ++++---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/x86/include/asm/intel-family.h b/arch/x86/include/asm/intel-family.h
index 9e6a13f03f0e..300dac505d7f 100644
--- a/arch/x86/include/asm/intel-family.h
+++ b/arch/x86/include/asm/intel-family.h
@@ -190,6 +190,7 @@
 /* Family 15 - NetBurst */
 #define INTEL_P4_WILLAMETTE		IFM(15, 0x01) /* Also Xeon Foster */
 #define INTEL_P4_PRESCOTT		IFM(15, 0x03)
+#define INTEL_P4_CEDARMILL		IFM(15, 0x06) /* Also Xeon Dempsey */
 
 /* Family 19 */
 #define INTEL_PANTHERCOVE_X		IFM(19, 0x01) /* Diamond Rapids */
diff --git a/arch/x86/mm/pat/memtype.c b/arch/x86/mm/pat/memtype.c
index feb8cc6a12bf..25a8ecbad3a2 100644
--- a/arch/x86/mm/pat/memtype.c
+++ b/arch/x86/mm/pat/memtype.c
@@ -43,6 +43,7 @@
 #include <linux/fs.h>
 #include <linux/rbtree.h>
 
+#include <asm/cpu_device_id.h>
 #include <asm/cacheflush.h>
 #include <asm/cacheinfo.h>
 #include <asm/processor.h>
@@ -290,9 +291,9 @@ void __init pat_bp_init(void)
 		return;
 	}
 
-	if ((c->x86_vendor == X86_VENDOR_INTEL) &&
-	    (((c->x86 == 0x6) && (c->x86_model <= 0xd)) ||
-	     ((c->x86 == 0xf) && (c->x86_model <= 0x6)))) {
+	if (c->x86_vendor == X86_VENDOR_INTEL &&
+	    ((c->x86_vfm >= INTEL_PENTIUM_PRO && c->x86_vfm <= INTEL_PENTIUM_M_DOTHAN) ||
+	    (c->x86_vfm >= INTEL_P4_WILLAMETTE && c->x86_vfm <= INTEL_P4_CEDARMILL))) {
 		/*
 		 * PAT support with the lower four entries. Intel Pentium 2,
 		 * 3, M, and 4 are affected by PAT errata, which makes the
-- 
2.43.0