From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Fri, 28 Sep 2012 13:06:41 +0000 (+0200)
Subject: s390/facilities: cleanup PFMF and HPAGE machine facility detection
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=3c7ef08bba65d1fef0b7486b30b5bbcdb42c5d9c;p=openwrt%2Fstaging%2Fblogic.git

s390/facilities: cleanup PFMF and HPAGE machine facility detection

MACHINE_HAS_PFMF and MACHINE_HAS_HPAGE actually have the same semantics:
the cpu has the EDAT1 facility installed in zArch mode. So remove one
of the feature flags in machine_flags and rename the other one to EDAT1.

The two old macros simply get mapped to MACHINE_HAS_EDAT1.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 8cfd731a18d8..a798985515b7 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -75,8 +75,7 @@ extern unsigned int s390_user_mode;
 #define MACHINE_FLAG_DIAG9C	(1UL << 7)
 #define MACHINE_FLAG_MVCOS	(1UL << 8)
 #define MACHINE_FLAG_KVM	(1UL << 9)
-#define MACHINE_FLAG_HPAGE	(1UL << 10)
-#define MACHINE_FLAG_PFMF	(1UL << 11)
+#define MACHINE_FLAG_EDAT1	(1UL << 10)
 #define MACHINE_FLAG_LPAR	(1UL << 12)
 #define MACHINE_FLAG_SPP	(1UL << 13)
 #define MACHINE_FLAG_TOPOLOGY	(1UL << 14)
@@ -88,6 +87,8 @@ extern unsigned int s390_user_mode;
 #define MACHINE_IS_LPAR		(S390_lowcore.machine_flags & MACHINE_FLAG_LPAR)
 
 #define MACHINE_HAS_DIAG9C	(S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
+#define MACHINE_HAS_PFMF	MACHINE_HAS_EDAT1
+#define MACHINE_HAS_HPAGE	MACHINE_HAS_EDAT1
 
 #ifndef CONFIG_64BIT
 #define MACHINE_HAS_IEEE	(S390_lowcore.machine_flags & MACHINE_FLAG_IEEE)
@@ -96,8 +97,7 @@ extern unsigned int s390_user_mode;
 #define MACHINE_HAS_DIAG44	(1)
 #define MACHINE_HAS_MVPG	(S390_lowcore.machine_flags & MACHINE_FLAG_MVPG)
 #define MACHINE_HAS_MVCOS	(0)
-#define MACHINE_HAS_HPAGE	(0)
-#define MACHINE_HAS_PFMF	(0)
+#define MACHINE_HAS_EDAT1	(0)
 #define MACHINE_HAS_SPP		(0)
 #define MACHINE_HAS_TOPOLOGY	(0)
 #define MACHINE_HAS_TE		(0)
@@ -109,8 +109,7 @@ extern unsigned int s390_user_mode;
 #define MACHINE_HAS_DIAG44	(S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
 #define MACHINE_HAS_MVPG	(1)
 #define MACHINE_HAS_MVCOS	(S390_lowcore.machine_flags & MACHINE_FLAG_MVCOS)
-#define MACHINE_HAS_HPAGE	(S390_lowcore.machine_flags & MACHINE_FLAG_HPAGE)
-#define MACHINE_HAS_PFMF	(S390_lowcore.machine_flags & MACHINE_FLAG_PFMF)
+#define MACHINE_HAS_EDAT1	(S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
 #define MACHINE_HAS_SPP		(S390_lowcore.machine_flags & MACHINE_FLAG_SPP)
 #define MACHINE_HAS_TOPOLOGY	(S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
 #define MACHINE_HAS_TE		(S390_lowcore.machine_flags & MACHINE_FLAG_TE)
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 00d114445068..4c91d078d091 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -283,14 +283,6 @@ static noinline __init void setup_facility_list(void)
 	      ARRAY_SIZE(S390_lowcore.stfle_fac_list));
 }
 
-static noinline __init void setup_hpage(void)
-{
-	if (!test_facility(2) || !test_facility(8))
-		return;
-	S390_lowcore.machine_flags |= MACHINE_FLAG_HPAGE;
-	__ctl_set_bit(0, 23);
-}
-
 static __init void detect_mvpg(void)
 {
 #ifndef CONFIG_64BIT
@@ -378,10 +370,12 @@ static __init void detect_diag44(void)
 static __init void detect_machine_facilities(void)
 {
 #ifdef CONFIG_64BIT
+	if (test_facility(8)) {
+		S390_lowcore.machine_flags |= MACHINE_FLAG_EDAT1;
+		__ctl_set_bit(0, 23);
+	}
 	if (test_facility(3))
 		S390_lowcore.machine_flags |= MACHINE_FLAG_IDTE;
-	if (test_facility(8))
-		S390_lowcore.machine_flags |= MACHINE_FLAG_PFMF;
 	if (test_facility(27))
 		S390_lowcore.machine_flags |= MACHINE_FLAG_MVCOS;
 	if (test_facility(40))
@@ -484,7 +478,6 @@ void __init startup_init(void)
 	detect_diag9c();
 	detect_diag44();
 	detect_machine_facilities();
-	setup_hpage();
 	setup_topology();
 	sclp_facilities_detect();
 	detect_memory_layout(memory_chunk);