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-rw-r--r--arch/s390/include/asm/chpid.h2
-rw-r--r--arch/s390/include/asm/css_chars.h3
-rw-r--r--arch/s390/include/asm/page.h14
-rw-r--r--arch/s390/include/asm/pgtable.h30
-rw-r--r--arch/s390/include/asm/setup.h14
-rw-r--r--arch/s390/include/uapi/asm/chsc.h10
6 files changed, 49 insertions, 24 deletions
diff --git a/arch/s390/include/asm/chpid.h b/arch/s390/include/asm/chpid.h
index 64c76dd..38c405e 100644
--- a/arch/s390/include/asm/chpid.h
+++ b/arch/s390/include/asm/chpid.h
@@ -1,5 +1,5 @@
/*
- * Copyright IBM Corp. 2007
+ * Copyright IBM Corp. 2007, 2012
* Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
*/
#ifndef _ASM_S390_CHPID_H
diff --git a/arch/s390/include/asm/css_chars.h b/arch/s390/include/asm/css_chars.h
index a06ebc2..7e1c917 100644
--- a/arch/s390/include/asm/css_chars.h
+++ b/arch/s390/include/asm/css_chars.h
@@ -3,8 +3,6 @@
#include <linux/types.h>
-#ifdef __KERNEL__
-
struct css_general_char {
u64 : 12;
u32 dynio : 1; /* bit 12 */
@@ -35,5 +33,4 @@ struct css_general_char {
extern struct css_general_char css_general_characteristics;
-#endif /* __KERNEL__ */
#endif
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index 27ab3c7..6d53670 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/pgtable.h b/arch/s390/include/asm/pgtable.h
index 979fe3d..dd647c9 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -119,13 +119,12 @@ static inline int is_zero_pfn(unsigned long pfn)
#ifndef __ASSEMBLY__
/*
- * The vmalloc area will always be on the topmost area of the kernel
- * mapping. We reserve 96MB (31bit) / 128GB (64bit) for vmalloc,
- * which should be enough for any sane case.
- * By putting vmalloc at the top, we maximise the gap between physical
- * memory and vmalloc to catch misplaced memory accesses. As a side
- * effect, this also makes sure that 64 bit module code cannot be used
- * as system call address.
+ * The vmalloc and module area will always be on the topmost area of the kernel
+ * mapping. We reserve 96MB (31bit) / 128GB (64bit) for vmalloc and modules.
+ * On 64 bit kernels we have a 2GB area at the top of the vmalloc area where
+ * modules will reside. That makes sure that inter module branches always
+ * happen without trampolines and in addition the placement within a 2GB frame
+ * is branch prediction unit friendly.
*/
extern unsigned long VMALLOC_START;
extern unsigned long VMALLOC_END;
@@ -133,6 +132,14 @@ extern struct page *vmemmap;
#define VMEM_MAX_PHYS ((unsigned long) vmemmap)
+#ifdef CONFIG_64BIT
+extern unsigned long MODULES_VADDR;
+extern unsigned long MODULES_END;
+#define MODULES_VADDR MODULES_VADDR
+#define MODULES_END MODULES_END
+#define MODULES_LEN (1UL << 31)
+#endif
+
/*
* A 31 bit pagetable entry of S390 has following format:
* | PFRA | | OS |
@@ -507,6 +514,15 @@ static inline int pmd_none(pmd_t pmd)
return (pmd_val(pmd) & _SEGMENT_ENTRY_INV) != 0UL;
}
+static inline int pmd_large(pmd_t pmd)
+{
+#ifdef CONFIG_64BIT
+ return !!(pmd_val(pmd) & _SEGMENT_ENTRY_LARGE);
+#else
+ return 0;
+#endif
+}
+
static inline int pmd_bad(pmd_t pmd)
{
unsigned long mask = ~_SEGMENT_ENTRY_ORIGIN & ~_SEGMENT_ENTRY_INV;
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 55ad134..f69f76b 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -71,8 +71,8 @@ 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_EDAT2 (1UL << 11)
#define MACHINE_FLAG_LPAR (1UL << 12)
#define MACHINE_FLAG_SPP (1UL << 13)
#define MACHINE_FLAG_TOPOLOGY (1UL << 14)
@@ -84,6 +84,8 @@ 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)
@@ -92,8 +94,8 @@ 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_EDAT2 (0)
#define MACHINE_HAS_SPP (0)
#define MACHINE_HAS_TOPOLOGY (0)
#define MACHINE_HAS_TE (0)
@@ -105,8 +107,8 @@ 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_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/include/uapi/asm/chsc.h b/arch/s390/include/uapi/asm/chsc.h
index aea451f..1c6a7f8 100644
--- a/arch/s390/include/uapi/asm/chsc.h
+++ b/arch/s390/include/uapi/asm/chsc.h
@@ -1,7 +1,7 @@
/*
* ioctl interface for /dev/chsc
*
- * Copyright IBM Corp. 2008
+ * Copyright IBM Corp. 2008, 2012
* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
*/
@@ -9,9 +9,12 @@
#define _ASM_CHSC_H
#include <linux/types.h>
+#include <linux/ioctl.h>
#include <asm/chpid.h>
#include <asm/schid.h>
+#define CHSC_SIZE 0x1000
+
struct chsc_async_header {
__u16 length;
__u16 code;
@@ -23,15 +26,14 @@ struct chsc_async_header {
struct chsc_async_area {
struct chsc_async_header header;
- __u8 data[PAGE_SIZE - 16 /* size of chsc_async_header */];
+ __u8 data[CHSC_SIZE - sizeof(struct chsc_async_header)];
} __attribute__ ((packed));
-
struct chsc_response_struct {
__u16 length;
__u16 code;
__u32 parms;
- __u8 data[PAGE_SIZE - 8];
+ __u8 data[CHSC_SIZE - 2 * sizeof(__u16) - sizeof(__u32)];
} __attribute__ ((packed));
struct chsc_chp_cd {
generated by cgit v0.10.2 at 2024-09-04 17:36:30 (GMT)