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-rw-r--r--arch/s390/include/asm/page.h14
-rw-r--r--arch/s390/include/asm/setup.h3
-rw-r--r--arch/s390/kernel/early.c2
-rw-r--r--arch/s390/kernel/setup.c38
4 files changed, 51 insertions, 6 deletions
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index 27ab3c7c1e8b..6d5367060a56 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -30,12 +30,20 @@
#include <asm/setup.h>
#ifndef __ASSEMBLY__
+static unsigned long pfmf(unsigned long function, unsigned long address)
+{
+ asm volatile(
+ " .insn rre,0xb9af0000,%[function],%[address]"
+ : [address] "+a" (address)
+ : [function] "d" (function)
+ : "memory");
+ return address;
+}
+
static inline void clear_page(void *page)
{
if (MACHINE_HAS_PFMF) {
- asm volatile(
- " .insn rre,0xb9af0000,%0,%1"
- : : "d" (0x10000), "a" (page) : "memory", "cc");
+ pfmf(0x10000, (unsigned long)page);
} else {
register unsigned long reg1 asm ("1") = 0;
register void *reg2 asm ("2") = page;
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index a798985515b7..bc1b87b7453a 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -76,6 +76,7 @@ extern unsigned int s390_user_mode;
#define MACHINE_FLAG_MVCOS (1UL << 8)
#define MACHINE_FLAG_KVM (1UL << 9)
#define MACHINE_FLAG_EDAT1 (1UL << 10)
+#define MACHINE_FLAG_EDAT2 (1UL << 11)
#define MACHINE_FLAG_LPAR (1UL << 12)
#define MACHINE_FLAG_SPP (1UL << 13)
#define MACHINE_FLAG_TOPOLOGY (1UL << 14)
@@ -98,6 +99,7 @@ extern unsigned int s390_user_mode;
#define MACHINE_HAS_MVPG (S390_lowcore.machine_flags & MACHINE_FLAG_MVPG)
#define MACHINE_HAS_MVCOS (0)
#define MACHINE_HAS_EDAT1 (0)
+#define MACHINE_HAS_EDAT2 (0)
#define MACHINE_HAS_SPP (0)
#define MACHINE_HAS_TOPOLOGY (0)
#define MACHINE_HAS_TE (0)
@@ -110,6 +112,7 @@ extern unsigned int s390_user_mode;
#define MACHINE_HAS_MVPG (1)
#define MACHINE_HAS_MVCOS (S390_lowcore.machine_flags & MACHINE_FLAG_MVCOS)
#define MACHINE_HAS_EDAT1 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT1)
+#define MACHINE_HAS_EDAT2 (S390_lowcore.machine_flags & MACHINE_FLAG_EDAT2)
#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 4c91d078d091..1f0eee9e7daa 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -374,6 +374,8 @@ static __init void detect_machine_facilities(void)
S390_lowcore.machine_flags |= MACHINE_FLAG_EDAT1;
__ctl_set_bit(0, 23);
}
+ if (test_facility(78))
+ S390_lowcore.machine_flags |= MACHINE_FLAG_EDAT2;
if (test_facility(3))
S390_lowcore.machine_flags |= MACHINE_FLAG_IDTE;
if (test_facility(27))
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index afa9fdba200e..bfb48f18169c 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -768,6 +768,40 @@ static void __init reserve_crashkernel(void)
#endif
}
+static void __init init_storage_keys(unsigned long start, unsigned long end)
+{
+ unsigned long boundary, function, size;
+
+ while (start < end) {
+ if (MACHINE_HAS_EDAT2) {
+ /* set storage keys for a 2GB frame */
+ function = 0x22000 | PAGE_DEFAULT_KEY;
+ size = 1UL << 31;
+ boundary = (start + size) & ~(size - 1);
+ if (boundary <= end) {
+ do {
+ start = pfmf(function, start);
+ } while (start < boundary);
+ continue;
+ }
+ }
+ if (MACHINE_HAS_EDAT1) {
+ /* set storage keys for a 1MB frame */
+ function = 0x21000 | PAGE_DEFAULT_KEY;
+ size = 1UL << 20;
+ boundary = (start + size) & ~(size - 1);
+ if (boundary <= end) {
+ do {
+ start = pfmf(function, start);
+ } while (start < boundary);
+ continue;
+ }
+ }
+ page_set_storage_key(start, PAGE_DEFAULT_KEY, 0);
+ start += PAGE_SIZE;
+ }
+}
+
static void __init setup_memory(void)
{
unsigned long bootmap_size;
@@ -846,9 +880,7 @@ static void __init setup_memory(void)
memblock_add_node(PFN_PHYS(start_chunk),
PFN_PHYS(end_chunk - start_chunk), 0);
pfn = max(start_chunk, start_pfn);
- for (; pfn < end_chunk; pfn++)
- page_set_storage_key(PFN_PHYS(pfn),
- PAGE_DEFAULT_KEY, 0);
+ init_storage_keys(PFN_PHYS(pfn), PFN_PHYS(end_chunk));
}
psw_set_key(PAGE_DEFAULT_KEY);
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