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Commit e1b28147 authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 

Pull second s390 update from Martin Schwidefsky:
 "The big thing in this pull request is the UAPI patch from David, and
  worth mentioning is the page table dumper.  The rest are small
  improvements and bug fixes."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/entry: fix svc number for TIF_SYSCALL system call restart
  s390/mm,vmem: fix vmem_add_mem()/vmem_remove_range()
  s390/vmalloc: have separate modules area
  s390/zcrypt: remove duplicated include from zcrypt_pcixcc.c
  s390/css_chars: remove superfluous ifdef
  s390/chsc: make headers usable
  s390/mm: let kernel text section always begin at 1MB
  s390/mm: fix mapping of read-only kernel text section
  s390/mm: add page table dumper
  s390: add support to start the kernel in 64 bit mode.
  s390/mm,pageattr: remove superfluous EXPORT_SYMBOLs
  s390/mm,pageattr: add more page table walk sanity checks
  s390/mm: fix pmd_huge() usage for kernel mapping
  s390/dcssblk: cleanup device attribute usage
  s390/mm: use pfmf instruction to initialize storage keys
  s390/facilities: cleanup PFMF and HPAGE machine facility detection
  UAPI: (Scripted) Disintegrate arch/s390/include/asm
parents ba706765 ab08ff34
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arch/s390/Kconfig.debug
View file @ e1b28147
......@@ -31,6 +31,18 @@ config DEBUG_STRICT_USER_COPY_CHECKS
If unsure, or if you run an older (pre 4.4) gcc, say N.
config S390_PTDUMP
bool "Export kernel pagetable layout to userspace via debugfs"
depends on DEBUG_KERNEL
select DEBUG_FS
---help---
Say Y here if you want to show the kernel pagetable layout in a
debugfs file. This information is only useful for kernel developers
who are working in architecture specific areas of the kernel.
It is probably not a good idea to enable this feature in a production
kernel.
If in doubt, say "N"
config DEBUG_SET_MODULE_RONX
def_bool y
depends on MODULES
......
arch/s390/include/asm/Kbuild
View file @ e1b28147
include include/asm-generic/Kbuild.asm
header-y += chpid.h
header-y += chsc.h
header-y += cmb.h
header-y += dasd.h
header-y += debug.h
header-y += kvm_virtio.h
header-y += monwriter.h
header-y += qeth.h
header-y += schid.h
header-y += tape390.h
header-y += ucontext.h
header-y += vtoc.h
header-y += zcrypt.h
generic-y += clkdev.h
arch/s390/include/asm/chpid.h
View file @ e1b28147
/*
* Copyright IBM Corp. 2007
* Copyright IBM Corp. 2007, 2012
* Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
*/
#ifndef _ASM_S390_CHPID_H
#define _ASM_S390_CHPID_H
#include <linux/string.h>
#include <linux/types.h>
#define __MAX_CHPID 255
struct chp_id {
u8 reserved1;
u8 cssid;
u8 reserved2;
u8 id;
} __attribute__((packed));
#ifdef __KERNEL__
#include <uapi/asm/chpid.h>
#include <asm/cio.h>
static inline void chp_id_init(struct chp_id *chpid)
......@@ -49,6 +36,4 @@ static inline int chp_id_is_valid(struct chp_id *chpid)
#define chp_id_for_each(c) \
for (chp_id_init(c); chp_id_is_valid(c); chp_id_next(c))
#endif /* __KERNEL */
#endif /* _ASM_S390_CHPID_H */
arch/s390/include/asm/cmb.h
View file @ e1b28147
#ifndef S390_CMB_H
#define S390_CMB_H
#include <linux/types.h>
#include <uapi/asm/cmb.h>
/**
* struct cmbdata - channel measurement block data for user space
* @size: size of the stored data
* @elapsed_time: time since last sampling
* @ssch_rsch_count: number of ssch and rsch
* @sample_count: number of samples
* @device_connect_time: time of device connect
* @function_pending_time: time of function pending
* @device_disconnect_time: time of device disconnect
* @control_unit_queuing_time: time of control unit queuing
* @device_active_only_time: time of device active only
* @device_busy_time: time of device busy (ext. format)
* @initial_command_response_time: initial command response time (ext. format)
*
* All values are stored as 64 bit for simplicity, especially
* in 32 bit emulation mode. All time values are normalized to
* nanoseconds.
* Currently, two formats are known, which differ by the size of
* this structure, i.e. the last two members are only set when
* the extended channel measurement facility (first shipped in
* z990 machines) is activated.
* Potentially, more fields could be added, which would result in a
* new ioctl number.
*/
struct cmbdata {
__u64 size;
__u64 elapsed_time;
/* basic and exended format: */
__u64 ssch_rsch_count;
__u64 sample_count;
__u64 device_connect_time;
__u64 function_pending_time;
__u64 device_disconnect_time;
__u64 control_unit_queuing_time;
__u64 device_active_only_time;
/* extended format only: */
__u64 device_busy_time;
__u64 initial_command_response_time;
};
/* enable channel measurement */
#define BIODASDCMFENABLE _IO(DASD_IOCTL_LETTER, 32)
/* enable channel measurement */
#define BIODASDCMFDISABLE _IO(DASD_IOCTL_LETTER, 33)
/* read channel measurement data */
#define BIODASDREADALLCMB _IOWR(DASD_IOCTL_LETTER, 33, struct cmbdata)
#ifdef __KERNEL__
struct ccw_device;
extern int enable_cmf(struct ccw_device *cdev);
extern int disable_cmf(struct ccw_device *cdev);
extern u64 cmf_read(struct ccw_device *cdev, int index);
extern int cmf_readall(struct ccw_device *cdev, struct cmbdata *data);
#endif /* __KERNEL__ */
#endif /* S390_CMB_H */
arch/s390/include/asm/css_chars.h
View file @ e1b28147
......@@ -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
arch/s390/include/asm/debug.h
View file @ e1b28147
......@@ -3,39 +3,14 @@
*
* Copyright IBM Corp. 1999, 2000
*/
#ifndef DEBUG_H
#define DEBUG_H
#include <linux/fs.h>
/* Note:
* struct __debug_entry must be defined outside of #ifdef __KERNEL__
* in order to allow a user program to analyze the 'raw'-view.
*/
struct __debug_entry{
union {
struct {
unsigned long long clock:52;
unsigned long long exception:1;
unsigned long long level:3;
unsigned long long cpuid:8;
} fields;
unsigned long long stck;
} id;
void* caller;
} __attribute__((packed));
#define __DEBUG_FEATURE_VERSION 2 /* version of debug feature */
#ifdef __KERNEL__
#include <linux/string.h>
#include <linux/spinlock.h>
#include <linux/kernel.h>
#include <linux/time.h>
#include <uapi/asm/debug.h>
#define DEBUG_MAX_LEVEL 6 /* debug levels range from 0 to 6 */
#define DEBUG_OFF_LEVEL -1 /* level where debug is switched off */
......@@ -254,5 +229,4 @@ int debug_unregister_view(debug_info_t* id, struct debug_view* view);
#define PRINT_FATAL(x...) printk ( KERN_DEBUG PRINTK_HEADER x )
#endif /* DASD_DEBUG */
#endif /* __KERNEL__ */
#endif /* DEBUG_H */
arch/s390/include/asm/kvm_para.h
View file @ e1b28147
......@@ -9,12 +9,6 @@
*
* Author(s): Christian Borntraeger <borntraeger@de.ibm.com>
*/
#ifndef __S390_KVM_PARA_H
#define __S390_KVM_PARA_H
#ifdef __KERNEL__
/*
* Hypercalls for KVM on s390. The calling convention is similar to the
* s390 ABI, so we use R2-R6 for parameters 1-5. In addition we use R1
......@@ -29,6 +23,12 @@
*
* This work is licensed under the terms of the GNU GPL, version 2.
*/
#ifndef __S390_KVM_PARA_H
#define __S390_KVM_PARA_H
#include <uapi/asm/kvm_para.h>
static inline long kvm_hypercall0(unsigned long nr)
{
......@@ -154,6 +154,4 @@ static inline bool kvm_check_and_clear_guest_paused(void)
return false;
}
#endif
#endif /* __S390_KVM_PARA_H */
arch/s390/include/asm/mman.h
View file @ e1b28147
......@@ -3,17 +3,13 @@
*
* Derived from "include/asm-i386/mman.h"
*/
#ifndef __S390_MMAN_H__
#define __S390_MMAN_H__
#include <asm-generic/mman.h>
#include <uapi/asm/mman.h>
#if defined(__KERNEL__)
#if !defined(__ASSEMBLY__) && defined(CONFIG_64BIT)
int s390_mmap_check(unsigned long addr, unsigned long len);
#define arch_mmap_check(addr,len,flags) s390_mmap_check(addr,len)
#endif
#endif
#endif /* __S390_MMAN_H__ */
arch/s390/include/asm/page.h
View file @ e1b28147
......@@ -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;
......
arch/s390/include/asm/pgtable.h
View file @ e1b28147
......@@ -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;
......
arch/s390/include/asm/ptrace.h
View file @ e1b28147
This diff is collapsed.
arch/s390/include/asm/schid.h
View file @ e1b28147
#ifndef ASM_SCHID_H
#define ASM_SCHID_H
#include <linux/types.h>
struct subchannel_id {
__u32 cssid : 8;
__u32 : 4;
__u32 m : 1;
__u32 ssid : 2;
__u32 one : 1;
__u32 sch_no : 16;
} __attribute__ ((packed, aligned(4)));
#ifdef __KERNEL__
#include <linux/string.h>
#include <uapi/asm/schid.h>
/* Helper function for sane state of pre-allocated subchannel_id. */
static inline void
......@@ -29,6 +18,4 @@ schid_equal(struct subchannel_id *schid1, struct subchannel_id *schid2)
return !memcmp(schid1, schid2, sizeof(struct subchannel_id));
}
#endif /* __KERNEL__ */
#endif /* ASM_SCHID_H */
arch/s390/include/asm/setup.h
View file @ e1b28147
......@@ -2,15 +2,11 @@
* S390 version
* Copyright IBM Corp. 1999, 2010
*/
#ifndef _ASM_S390_SETUP_H
#define _ASM_S390_SETUP_H
#define COMMAND_LINE_SIZE 4096
#define ARCH_COMMAND_LINE_SIZE 896
#include <uapi/asm/setup.h>
#ifdef __KERNEL__
#define PARMAREA 0x10400
#define MEMORY_CHUNKS 256
......@@ -75,8 +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)
......@@ -88,6 +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)
......@@ -96,8 +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)
......@@ -109,8 +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)
......@@ -173,5 +171,4 @@ extern void (*_machine_power_off)(void);
#define COMMAND_LINE 0x10480
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_S390_SETUP_H */
arch/s390/include/asm/signal.h
View file @ e1b28147
......@@ -3,18 +3,11 @@
*
* Derived from "include/asm-i386/signal.h"
*/
#ifndef _ASMS390_SIGNAL_H
#define _ASMS390_SIGNAL_H
#include <linux/types.h>
#include <linux/time.h>
/* Avoid too many header ordering problems. */
struct siginfo;
struct pt_regs;
#include <uapi/asm/signal.h>
#ifdef __KERNEL__
/* Most things should be clean enough to redefine this at will, if care
is taken to make libc match. */
#include <asm/sigcontext.h>
......@@ -28,94 +21,6 @@ typedef struct {
unsigned long sig[_NSIG_WORDS];
} sigset_t;
#else
/* Here we must cater to libcs that poke about in kernel headers. */
#define NSIG 32
typedef unsigned long sigset_t;
#endif /* __KERNEL__ */
#define SIGHUP 1
#define SIGINT 2
#define SIGQUIT 3
#define SIGILL 4
#define SIGTRAP 5
#define SIGABRT 6
#define SIGIOT 6
#define SIGBUS 7
#define SIGFPE 8
#define SIGKILL 9
#define SIGUSR1 10
#define SIGSEGV 11
#define SIGUSR2 12
#define SIGPIPE 13
#define SIGALRM 14
#define SIGTERM 15
#define SIGSTKFLT 16
#define SIGCHLD 17
#define SIGCONT 18
#define SIGSTOP 19
#define SIGTSTP 20
#define SIGTTIN 21
#define SIGTTOU 22
#define SIGURG 23
#define SIGXCPU 24
#define SIGXFSZ 25
#define SIGVTALRM 26
#define SIGPROF 27
#define SIGWINCH 28
#define SIGIO 29
#define SIGPOLL SIGIO
/*
#define SIGLOST 29
*/
#define SIGPWR 30
#define SIGSYS 31
#define SIGUNUSED 31
/* These should not be considered constants from userland. */
#define SIGRTMIN 32
#define SIGRTMAX _NSIG
/*
* SA_FLAGS values:
*
* SA_ONSTACK indicates that a registered stack_t will be used.
* SA_RESTART flag to get restarting signals (which were the default long ago)
* SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
* SA_RESETHAND clears the handler when the signal is delivered.
* SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
* SA_NODEFER prevents the current signal from being masked in the handler.
*
* SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
* Unix names RESETHAND and NODEFER respectively.
*/
#define SA_NOCLDSTOP 0x00000001
#define SA_NOCLDWAIT 0x00000002
#define SA_SIGINFO 0x00000004
#define SA_ONSTACK 0x08000000
#define SA_RESTART 0x10000000
#define SA_NODEFER 0x40000000
#define SA_RESETHAND 0x80000000
#define SA_NOMASK SA_NODEFER
#define SA_ONESHOT SA_RESETHAND
#define SA_RESTORER 0x04000000
/*
* sigaltstack controls
*/
#define SS_ONSTACK 1
#define SS_DISABLE 2
#define MINSIGSTKSZ 2048
#define SIGSTKSZ 8192
#include <asm-generic/signal-defs.h>
#ifdef __KERNEL__
struct old_sigaction {
__sighandler_t sa_handler;
old_sigset_t sa_mask;
......@@ -136,35 +41,4 @@ struct k_sigaction {
#define ptrace_signal_deliver(regs, cookie) do { } while (0)
#else
/* Here we must cater to libcs that poke about in kernel headers. */
struct sigaction {
union {
__sighandler_t _sa_handler;
void (*_sa_sigaction)(int, struct siginfo *, void *);
} _u;
#ifndef __s390x__ /* lovely */
sigset_t sa_mask;
unsigned long sa_flags;
void (*sa_restorer)(void);
#else /* __s390x__ */
unsigned long sa_flags;
void (*sa_restorer)(void);
sigset_t sa_mask;
#endif /* __s390x__ */
};
#define sa_handler _u._sa_handler
#define sa_sigaction _u._sa_sigaction
#endif /* __KERNEL__ */
typedef struct sigaltstack {
void __user *ss_sp;
int ss_flags;
size_t ss_size;
} stack_t;
#endif
arch/s390/include/asm/termios.h
View file @ e1b28147
......@@ -3,49 +3,11 @@
*
* Derived from "include/asm-i386/termios.h"
*/
#ifndef _S390_TERMIOS_H
#define _S390_TERMIOS_H
#include <asm/termbits.h>
#include <asm/ioctls.h>
struct winsize {
unsigned short ws_row;
unsigned short ws_col;
unsigned short ws_xpixel;
unsigned short ws_ypixel;
};
#define NCC 8
struct termio {
unsigned short c_iflag; /* input mode flags */
unsigned short c_oflag; /* output mode flags */
unsigned short c_cflag; /* control mode flags */
unsigned short c_lflag; /* local mode flags */
unsigned char c_line; /* line discipline */
unsigned char c_cc[NCC]; /* control characters */
};
#include <uapi/asm/termios.h>
/* modem lines */
#define TIOCM_LE 0x001
#define TIOCM_DTR 0x002
#define TIOCM_RTS 0x004
#define TIOCM_ST 0x008
#define TIOCM_SR 0x010
#define TIOCM_CTS 0x020
#define TIOCM_CAR 0x040
#define TIOCM_RNG 0x080
#define TIOCM_DSR 0x100
#define TIOCM_CD TIOCM_CAR
#define TIOCM_RI TIOCM_RNG
#define TIOCM_OUT1 0x2000
#define TIOCM_OUT2 0x4000
#define TIOCM_LOOP 0x8000
/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
#ifdef __KERNEL__
/* intr=^C quit=^\ erase=del kill=^U
eof=^D vtime=\0 vmin=\1 sxtc=\0
......@@ -60,6 +22,4 @@ struct termio {
#include <asm-generic/termios-base.h>
#endif /* __KERNEL__ */
#endif /* _S390_TERMIOS_H */
arch/s390/include/asm/types.h
View file @ e1b28147
......@@ -3,26 +3,14 @@
*
* Derived from "include/asm-i386/types.h"
*/
#ifndef _S390_TYPES_H
#define _S390_TYPES_H
#include <asm-generic/int-ll64.h>
#ifndef __ASSEMBLY__
/* A address type so that arithmetic can be done on it & it can be upgraded to
64 bit when necessary
*/
typedef unsigned long addr_t;
typedef __signed__ long saddr_t;
#endif /* __ASSEMBLY__ */
#include <uapi/asm/types.h>
/*
* These aren't exported outside the kernel to avoid name space clashes
*/
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
......@@ -37,5 +25,4 @@ typedef union {
#endif /* ! CONFIG_64BIT */
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _S390_TYPES_H */
arch/s390/include/asm/unistd.h
View file @ e1b28147
This diff is collapsed.
arch/s390/include/uapi/asm/Kbuild
View file @ e1b28147
# UAPI Header export list
include include/uapi/asm-generic/Kbuild.asm
header-y += auxvec.h
header-y += bitsperlong.h
header-y += byteorder.h
header-y += chpid.h
header-y += chsc.h
header-y += cmb.h
header-y += dasd.h
header-y += debug.h
header-y += errno.h
header-y += fcntl.h
header-y += ioctl.h
header-y += ioctls.h
header-y += ipcbuf.h
header-y += kvm.h
header-y += kvm_para.h
header-y += kvm_virtio.h
header-y += mman.h
header-y += monwriter.h
header-y += msgbuf.h
header-y += param.h
header-y += poll.h
header-y += posix_types.h
header-y += ptrace.h
header-y += qeth.h
header-y += resource.h
header-y += schid.h
header-y += sembuf.h
header-y += setup.h
header-y += shmbuf.h
header-y += sigcontext.h
header-y += siginfo.h
header-y += signal.h
header-y += socket.h
header-y += sockios.h
header-y += stat.h
header-y += statfs.h
header-y += swab.h
header-y += tape390.h
header-y += termbits.h
header-y += termios.h
header-y += types.h
header-y += ucontext.h
header-y += unistd.h
header-y += vtoc.h
header-y += zcrypt.h
arch/s390/include/uapi/asm/chpid.h 0 → 100644
View file @ e1b28147
/*
* Copyright IBM Corp. 2007
* Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
*/
#ifndef _UAPI_ASM_S390_CHPID_H
#define _UAPI_ASM_S390_CHPID_H
#include <linux/string.h>
#include <linux/types.h>
#define __MAX_CHPID 255
struct chp_id {
u8 reserved1;
u8 cssid;
u8 reserved2;
u8 id;
} __attribute__((packed));
#endif /* _UAPI_ASM_S390_CHPID_H */
arch/s390/include/asm/chsc.h → arch/s390/include/uapi/asm/chsc.h
View file @ e1b28147
/*
* 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 {
......
arch/s390/include/uapi/asm/cmb.h 0 → 100644
View file @ e1b28147
#ifndef _UAPIS390_CMB_H
#define _UAPIS390_CMB_H
#include <linux/types.h>
/**
* struct cmbdata - channel measurement block data for user space
* @size: size of the stored data
* @elapsed_time: time since last sampling
* @ssch_rsch_count: number of ssch and rsch
* @sample_count: number of samples
* @device_connect_time: time of device connect
* @function_pending_time: time of function pending
* @device_disconnect_time: time of device disconnect
* @control_unit_queuing_time: time of control unit queuing
* @device_active_only_time: time of device active only
* @device_busy_time: time of device busy (ext. format)
* @initial_command_response_time: initial command response time (ext. format)
*
* All values are stored as 64 bit for simplicity, especially
* in 32 bit emulation mode. All time values are normalized to
* nanoseconds.
* Currently, two formats are known, which differ by the size of
* this structure, i.e. the last two members are only set when
* the extended channel measurement facility (first shipped in
* z990 machines) is activated.
* Potentially, more fields could be added, which would result in a
* new ioctl number.
*/
struct cmbdata {
__u64 size;
__u64 elapsed_time;
/* basic and exended format: */
__u64 ssch_rsch_count;
__u64 sample_count;
__u64 device_connect_time;
__u64 function_pending_time;
__u64 device_disconnect_time;
__u64 control_unit_queuing_time;
__u64 device_active_only_time;
/* extended format only: */
__u64 device_busy_time;
__u64 initial_command_response_time;
};
/* enable channel measurement */
#define BIODASDCMFENABLE _IO(DASD_IOCTL_LETTER, 32)
/* enable channel measurement */
#define BIODASDCMFDISABLE _IO(DASD_IOCTL_LETTER, 33)
/* read channel measurement data */
#define BIODASDREADALLCMB _IOWR(DASD_IOCTL_LETTER, 33, struct cmbdata)
#endif /* _UAPIS390_CMB_H */
arch/s390/include/uapi/asm/debug.h 0 → 100644
View file @ e1b28147
/*
* S/390 debug facility
*
* Copyright IBM Corp. 1999, 2000
*/
#ifndef _UAPIDEBUG_H
#define _UAPIDEBUG_H
#include <linux/fs.h>
/* Note:
* struct __debug_entry must be defined outside of #ifdef __KERNEL__
* in order to allow a user program to analyze the 'raw'-view.
*/
struct __debug_entry{
union {
struct {
unsigned long long clock:52;
unsigned long long exception:1;
unsigned long long level:3;
unsigned long long cpuid:8;
} fields;
unsigned long long stck;
} id;
void* caller;
} __attribute__((packed));
#define __DEBUG_FEATURE_VERSION 2 /* version of debug feature */
#endif /* _UAPIDEBUG_H */
arch/s390/include/uapi/asm/mman.h 0 → 100644
View file @ e1b28147
/*
* S390 version
*
* Derived from "include/asm-i386/mman.h"
*/
#include <asm-generic/mman.h>
arch/s390/include/uapi/asm/ptrace.h 0 → 100644
View file @ e1b28147
This diff is collapsed.
arch/s390/include/uapi/asm/schid.h 0 → 100644
View file @ e1b28147
#ifndef _UAPIASM_SCHID_H
#define _UAPIASM_SCHID_H
#include <linux/types.h>
struct subchannel_id {
__u32 cssid : 8;
__u32 : 4;
__u32 m : 1;
__u32 ssid : 2;
__u32 one : 1;
__u32 sch_no : 16;
} __attribute__ ((packed, aligned(4)));
#endif /* _UAPIASM_SCHID_H */
arch/s390/include/uapi/asm/setup.h 0 → 100644
View file @ e1b28147
/*
* S390 version
* Copyright IBM Corp. 1999, 2010
*/
#ifndef _UAPI_ASM_S390_SETUP_H
#define _UAPI_ASM_S390_SETUP_H
#define COMMAND_LINE_SIZE 4096
#define ARCH_COMMAND_LINE_SIZE 896
#endif /* _UAPI_ASM_S390_SETUP_H */
arch/s390/include/uapi/asm/signal.h 0 → 100644
View file @ e1b28147
/*
* S390 version
*
* Derived from "include/asm-i386/signal.h"
*/
#ifndef _UAPI_ASMS390_SIGNAL_H
#define _UAPI_ASMS390_SIGNAL_H
#include <linux/types.h>
#include <linux/time.h>
/* Avoid too many header ordering problems. */
struct siginfo;
struct pt_regs;
#ifndef __KERNEL__
/* Here we must cater to libcs that poke about in kernel headers. */
#define NSIG 32
typedef unsigned long sigset_t;
#endif /* __KERNEL__ */
#define SIGHUP 1
#define SIGINT 2
#define SIGQUIT 3
#define SIGILL 4
#define SIGTRAP 5
#define SIGABRT 6
#define SIGIOT 6
#define SIGBUS 7
#define SIGFPE 8
#define SIGKILL 9
#define SIGUSR1 10
#define SIGSEGV 11
#define SIGUSR2 12
#define SIGPIPE 13
#define SIGALRM 14
#define SIGTERM 15
#define SIGSTKFLT 16
#define SIGCHLD 17
#define SIGCONT 18
#define SIGSTOP 19
#define SIGTSTP 20
#define SIGTTIN 21
#define SIGTTOU 22
#define SIGURG 23
#define SIGXCPU 24
#define SIGXFSZ 25
#define SIGVTALRM 26
#define SIGPROF 27
#define SIGWINCH 28
#define SIGIO 29
#define SIGPOLL SIGIO
/*
#define SIGLOST 29
*/
#define SIGPWR 30
#define SIGSYS 31
#define SIGUNUSED 31
/* These should not be considered constants from userland. */
#define SIGRTMIN 32
#define SIGRTMAX _NSIG
/*
* SA_FLAGS values:
*
* SA_ONSTACK indicates that a registered stack_t will be used.
* SA_RESTART flag to get restarting signals (which were the default long ago)
* SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
* SA_RESETHAND clears the handler when the signal is delivered.
* SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
* SA_NODEFER prevents the current signal from being masked in the handler.
*
* SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
* Unix names RESETHAND and NODEFER respectively.
*/
#define SA_NOCLDSTOP 0x00000001
#define SA_NOCLDWAIT 0x00000002
#define SA_SIGINFO 0x00000004
#define SA_ONSTACK 0x08000000
#define SA_RESTART 0x10000000
#define SA_NODEFER 0x40000000
#define SA_RESETHAND 0x80000000
#define SA_NOMASK SA_NODEFER
#define SA_ONESHOT SA_RESETHAND
#define SA_RESTORER 0x04000000
/*
* sigaltstack controls
*/
#define SS_ONSTACK 1
#define SS_DISABLE 2
#define MINSIGSTKSZ 2048
#define SIGSTKSZ 8192
#include <asm-generic/signal-defs.h>
#ifndef __KERNEL__
/* Here we must cater to libcs that poke about in kernel headers. */
struct sigaction {
union {
__sighandler_t _sa_handler;
void (*_sa_sigaction)(int, struct siginfo *, void *);
} _u;
#ifndef __s390x__ /* lovely */
sigset_t sa_mask;
unsigned long sa_flags;
void (*sa_restorer)(void);
#else /* __s390x__ */
unsigned long sa_flags;
void (*sa_restorer)(void);
sigset_t sa_mask;
#endif /* __s390x__ */
};
#define sa_handler _u._sa_handler
#define sa_sigaction _u._sa_sigaction
#endif /* __KERNEL__ */
typedef struct sigaltstack {
void __user *ss_sp;
int ss_flags;
size_t ss_size;
} stack_t;
#endif /* _UAPI_ASMS390_SIGNAL_H */
arch/s390/include/uapi/asm/termios.h 0 → 100644
View file @ e1b28147
/*
* S390 version
*
* Derived from "include/asm-i386/termios.h"
*/
#ifndef _UAPI_S390_TERMIOS_H
#define _UAPI_S390_TERMIOS_H
#include <asm/termbits.h>
#include <asm/ioctls.h>
struct winsize {
unsigned short ws_row;
unsigned short ws_col;
unsigned short ws_xpixel;
unsigned short ws_ypixel;
};
#define NCC 8
struct termio {
unsigned short c_iflag; /* input mode flags */
unsigned short c_oflag; /* output mode flags */
unsigned short c_cflag; /* control mode flags */
unsigned short c_lflag; /* local mode flags */
unsigned char c_line; /* line discipline */
unsigned char c_cc[NCC]; /* control characters */
};
/* modem lines */
#define TIOCM_LE 0x001
#define TIOCM_DTR 0x002
#define TIOCM_RTS 0x004
#define TIOCM_ST 0x008
#define TIOCM_SR 0x010
#define TIOCM_CTS 0x020
#define TIOCM_CAR 0x040
#define TIOCM_RNG 0x080
#define TIOCM_DSR 0x100
#define TIOCM_CD TIOCM_CAR
#define TIOCM_RI TIOCM_RNG
#define TIOCM_OUT1 0x2000
#define TIOCM_OUT2 0x4000
#define TIOCM_LOOP 0x8000
/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
#endif /* _UAPI_S390_TERMIOS_H */
arch/s390/include/uapi/asm/types.h 0 → 100644
View file @ e1b28147
/*
* S390 version
*
* Derived from "include/asm-i386/types.h"
*/
#ifndef _UAPI_S390_TYPES_H
#define _UAPI_S390_TYPES_H
#include <asm-generic/int-ll64.h>
#ifndef __ASSEMBLY__
/* A address type so that arithmetic can be done on it & it can be upgraded to
64 bit when necessary
*/
typedef unsigned long addr_t;
typedef __signed__ long saddr_t;
#endif /* __ASSEMBLY__ */
#endif /* _UAPI_S390_TYPES_H */
arch/s390/include/uapi/asm/unistd.h 0 → 100644
View file @ e1b28147
This diff is collapsed.
arch/s390/kernel/early.c
View file @ e1b28147
......@@ -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 +370,14 @@ 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(78))
S390_lowcore.machine_flags |= MACHINE_FLAG_EDAT2;
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 +480,6 @@ void __init startup_init(void)
detect_diag9c();
detect_diag44();
detect_machine_facilities();
setup_hpage();
setup_topology();
sclp_facilities_detect();
detect_memory_layout(memory_chunk);
......
arch/s390/kernel/entry64.S
View file @ e1b28147
......@@ -295,7 +295,7 @@ sysc_sigpending:
jno sysc_return
lmg %r2,%r7,__PT_R2(%r11) # load svc arguments
lghi %r8,0 # svc 0 returns -ENOSYS
lh %r1,__PT_INT_CODE+2(%r11) # load new svc number
llgh %r1,__PT_INT_CODE+2(%r11) # load new svc number
cghi %r1,NR_syscalls
jnl sysc_nr_ok # invalid svc number -> do svc 0
slag %r8,%r1,2
......
arch/s390/kernel/head.S
View file @ e1b28147
......@@ -52,7 +52,7 @@ __HEAD
.long 0x02000370,0x60000050 # the channel program the PSW
.long 0x020003c0,0x60000050 # at location 0 is loaded.
.long 0x02000410,0x60000050 # Initial processing starts
.long 0x02000460,0x60000050 # at 0xf0 = iplstart.
.long 0x02000460,0x60000050 # at 0x200 = iplstart.
.long 0x020004b0,0x60000050
.long 0x02000500,0x60000050
.long 0x02000550,0x60000050
......@@ -62,11 +62,54 @@ __HEAD
.long 0x02000690,0x60000050
.long 0x020006e0,0x20000050
.org 0xf0
.org 0x200
#
# subroutine to set architecture mode
#
.Lsetmode:
#ifdef CONFIG_64BIT
mvi __LC_AR_MODE_ID,1 # set esame flag
slr %r0,%r0 # set cpuid to zero
lhi %r1,2 # mode 2 = esame (dump)
sigp %r1,%r0,0x12 # switch to esame mode
bras %r13,0f
.fill 16,4,0x0
0: lmh %r0,%r15,0(%r13) # clear high-order half of gprs
sam31 # switch to 31 bit addressing mode
#else
mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0)
#endif
br %r14
#
# subroutine to wait for end I/O
#
.Lirqwait:
#ifdef CONFIG_64BIT
mvc 0x1f0(16),.Lnewpsw # set up IO interrupt psw
lpsw .Lwaitpsw
.Lioint:
br %r14
.align 8
.Lnewpsw:
.quad 0x0000000080000000,.Lioint
#else
mvc 0x78(8),.Lnewpsw # set up IO interrupt psw
lpsw .Lwaitpsw
.Lioint:
br %r14
.align 8
.Lnewpsw:
.long 0x00080000,0x80000000+.Lioint
#endif
.Lwaitpsw:
.long 0x020a0000,0x80000000+.Lioint
#
# subroutine for loading cards from the reader
#
.Lloader:
la %r4,0(%r14)
la %r3,.Lorb # r2 = address of orb into r2
la %r5,.Lirb # r4 = address of irb
la %r6,.Lccws
......@@ -83,9 +126,7 @@ __HEAD
ssch 0(%r3) # load chunk of 1600 bytes
bnz .Llderr
.Lwait4irq:
mvc 0x78(8),.Lnewpsw # set up IO interrupt psw
lpsw .Lwaitpsw
.Lioint:
bas %r14,.Lirqwait
c %r1,0xb8 # compare subchannel number
bne .Lwait4irq
tsch 0(%r5)
......@@ -104,7 +145,7 @@ __HEAD
sr %r0,%r3 # #ccws*80-residual=#bytes read
ar %r2,%r0
br %r14 # r2 contains the total size
br %r4 # r2 contains the total size
.Lcont:
ahi %r2,0x640 # add 0x640 to total size
......@@ -128,10 +169,6 @@ __HEAD
.Lloadp:.long 0,0
.align 8
.Lcrash:.long 0x000a0000,0x00000000
.Lnewpsw:
.long 0x00080000,0x80000000+.Lioint
.Lwaitpsw:
.long 0x020a0000,0x80000000+.Lioint
.align 8
.Lccws: .rept 19
......@@ -140,6 +177,7 @@ __HEAD
.long 0x02200050,0x00000000
iplstart:
bas %r14,.Lsetmode # Immediately switch to 64 bit mode
lh %r1,0xb8 # test if subchannel number
bct %r1,.Lnoload # is valid
l %r1,0xb8 # load ipl subchannel number
......@@ -209,8 +247,8 @@ iplstart:
#
# reset files in VM reader
#
stidp __LC_SAVE_AREA_SYNC # store cpuid
tm __LC_SAVE_AREA_SYNC,0xff# running VM ?
stidp .Lcpuid # store cpuid
tm .Lcpuid,0xff # running VM ?
bno .Lnoreset
la %r2,.Lreset
lhi %r3,26
......@@ -222,23 +260,14 @@ iplstart:
tm 31(%r5),0xff # bits is set in the schib
bz .Lnoreset
.Lwaitforirq:
mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw
.Lwaitrdrirq:
lpsw .Lrdrwaitpsw
.Lrdrint:
bas %r14,.Lirqwait # wait for IO interrupt
c %r1,0xb8 # compare subchannel number
bne .Lwaitrdrirq
bne .Lwaitforirq
la %r5,.Lirb
tsch 0(%r5)
.Lnoreset:
b .Lnoload
.align 8
.Lrdrnewpsw:
.long 0x00080000,0x80000000+.Lrdrint
.Lrdrwaitpsw:
.long 0x020a0000,0x80000000+.Lrdrint
#
# everything loaded, go for it
#
......@@ -254,6 +283,8 @@ iplstart:
.byte 0xc8,0xd6,0xd3,0xc4 # "change rdr all keep nohold"
.L_eof: .long 0xc5d6c600 /* C'EOF' */
.L_hdr: .long 0xc8c4d900 /* C'HDR' */
.align 8
.Lcpuid:.fill 8,1,0
#
# SALIPL loader support. Based on a patch by Rob van der Heij.
......@@ -263,6 +294,7 @@ iplstart:
.org 0x800
ENTRY(start)
stm %r0,%r15,0x07b0 # store registers
bas %r14,.Lsetmode # Immediately switch to 64 bit mode
basr %r12,%r0
.base:
l %r11,.parm
......@@ -343,6 +375,18 @@ ENTRY(startup)
ENTRY(startup_kdump)
j .Lep_startup_kdump
.Lep_startup_normal:
#ifdef CONFIG_64BIT
mvi __LC_AR_MODE_ID,1 # set esame flag
slr %r0,%r0 # set cpuid to zero
lhi %r1,2 # mode 2 = esame (dump)
sigp %r1,%r0,0x12 # switch to esame mode
bras %r13,0f
.fill 16,4,0x0
0: lmh %r0,%r15,0(%r13) # clear high-order half of gprs
sam31 # switch to 31 bit addressing mode
#else
mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0)
#endif
basr %r13,0 # get base
.LPG0:
xc 0x200(256),0x200 # partially clear lowcore
......@@ -410,22 +454,17 @@ ENTRY(startup_kdump)
#endif
#ifdef CONFIG_64BIT
mvi __LC_AR_MODE_ID,1 # set esame flag
slr %r0,%r0 # set cpuid to zero
lhi %r1,2 # mode 2 = esame (dump)
sigp %r1,%r0,0x12 # switch to esame mode
/* Continue with 64bit startup code in head64.S */
sam64 # switch to 64 bit mode
larl %r13,4f
lmh %r0,%r15,0(%r13) # clear high-order half
jg startup_continue
4: .fill 16,4,0x0
#else
mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0)
/* Continue with 31bit startup code in head31.S */
l %r13,4f-.LPG0(%r13)
b 0(%r13)
.align 8
4: .long startup_continue
#endif
.align 8
5: .long 0x7fffffff,0xffffffff
......
arch/s390/kernel/head31.S
View file @ e1b28147
......@@ -78,10 +78,7 @@ ENTRY(startup_continue)
ENTRY(_ehead)
#ifdef CONFIG_SHARED_KERNEL
.org 0x100000 - 0x11000 # head.o ends at 0x11000
#endif
#
# startup-code, running in absolute addressing mode
#
......
arch/s390/kernel/head64.S
View file @ e1b28147
......@@ -76,10 +76,7 @@ ENTRY(startup_continue)
ENTRY(_ehead)
#ifdef CONFIG_SHARED_KERNEL
.org 0x100000 - 0x11000 # head.o ends at 0x11000
#endif
#
# startup-code, running in absolute addressing mode
#
......
arch/s390/kernel/module.c
View file @ e1b28147
......@@ -44,6 +44,17 @@
#define PLT_ENTRY_SIZE 20
#endif /* CONFIG_64BIT */
#ifdef CONFIG_64BIT
void *module_alloc(unsigned long size)
{
if (PAGE_ALIGN(size) > MODULES_LEN)
return NULL;
return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
GFP_KERNEL, PAGE_KERNEL, -1,
__builtin_return_address(0));
}
#endif
/* Free memory returned from module_alloc */
void module_free(struct module *mod, void *module_region)
{
......
arch/s390/kernel/setup.c
View file @ e1b28147
......@@ -105,6 +105,11 @@ EXPORT_SYMBOL(VMALLOC_END);
struct page *vmemmap;
EXPORT_SYMBOL(vmemmap);
#ifdef CONFIG_64BIT
unsigned long MODULES_VADDR;
unsigned long MODULES_END;
#endif
/* An array with a pointer to the lowcore of every CPU. */
struct _lowcore *lowcore_ptr[NR_CPUS];
EXPORT_SYMBOL(lowcore_ptr);
......@@ -544,19 +549,23 @@ static void __init setup_memory_end(void)
/* Choose kernel address space layout: 2, 3, or 4 levels. */
#ifdef CONFIG_64BIT
vmalloc_size = VMALLOC_END ?: 128UL << 30;
vmalloc_size = VMALLOC_END ?: (128UL << 30) - MODULES_LEN;
tmp = (memory_end ?: real_memory_size) / PAGE_SIZE;
tmp = tmp * (sizeof(struct page) + PAGE_SIZE) + vmalloc_size;
if (tmp <= (1UL << 42))
vmax = 1UL << 42; /* 3-level kernel page table */
else
vmax = 1UL << 53; /* 4-level kernel page table */
/* module area is at the end of the kernel address space. */
MODULES_END = vmax;
MODULES_VADDR = MODULES_END - MODULES_LEN;
VMALLOC_END = MODULES_VADDR;
#else
vmalloc_size = VMALLOC_END ?: 96UL << 20;
vmax = 1UL << 31; /* 2-level kernel page table */
#endif
/* vmalloc area is at the end of the kernel address space. */
VMALLOC_END = vmax;
#endif
VMALLOC_START = vmax - vmalloc_size;
/* Split remaining virtual space between 1:1 mapping & vmemmap array */
......@@ -768,6 +777,40 @@ 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 +889,7 @@ 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);
......
arch/s390/mm/Makefile
View file @ e1b28147
......@@ -7,3 +7,4 @@ obj-y := init.o fault.o extmem.o mmap.o vmem.o pgtable.o maccess.o \
obj-$(CONFIG_CMM) += cmm.o
obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
obj-$(CONFIG_DEBUG_SET_MODULE_RONX) += pageattr.o
obj-$(CONFIG_S390_PTDUMP) += dump_pagetables.o
arch/s390/mm/dump_pagetables.c 0 → 100644
View file @ e1b28147
#include <linux/seq_file.h>
#include <linux/debugfs.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <asm/sections.h>
#include <asm/pgtable.h>
static unsigned long max_addr;
struct addr_marker {
unsigned long start_address;
const char *name;
};
enum address_markers_idx {
IDENTITY_NR = 0,
KERNEL_START_NR,
KERNEL_END_NR,
VMEMMAP_NR,
VMALLOC_NR,
#ifdef CONFIG_64BIT
MODULES_NR,
#endif
};
static struct addr_marker address_markers[] = {
[IDENTITY_NR] = {0, "Identity Mapping"},
[KERNEL_START_NR] = {(unsigned long)&_stext, "Kernel Image Start"},
[KERNEL_END_NR] = {(unsigned long)&_end, "Kernel Image End"},
[VMEMMAP_NR] = {0, "vmemmap Area"},
[VMALLOC_NR] = {0, "vmalloc Area"},
#ifdef CONFIG_64BIT
[MODULES_NR] = {0, "Modules Area"},
#endif
{ -1, NULL }
};
struct pg_state {
int level;
unsigned int current_prot;
unsigned long start_address;
unsigned long current_address;
const struct addr_marker *marker;
};
static void print_prot(struct seq_file *m, unsigned int pr, int level)
{
static const char * const level_name[] =
{ "ASCE", "PGD", "PUD", "PMD", "PTE" };
seq_printf(m, "%s ", level_name[level]);
if (pr & _PAGE_INVALID)
seq_printf(m, "I\n");
else
seq_printf(m, "%s\n", pr & _PAGE_RO ? "RO" : "RW");
}
static void note_page(struct seq_file *m, struct pg_state *st,
unsigned int new_prot, int level)
{
static const char units[] = "KMGTPE";
int width = sizeof(unsigned long) * 2;
const char *unit = units;
unsigned int prot, cur;
unsigned long delta;
/*
* If we have a "break" in the series, we need to flush the state
* that we have now. "break" is either changing perms, levels or
* address space marker.
*/
prot = new_prot;
cur = st->current_prot;
if (!st->level) {
/* First entry */
st->current_prot = new_prot;
st->level = level;
st->marker = address_markers;
seq_printf(m, "---[ %s ]---\n", st->marker->name);
} else if (prot != cur || level != st->level ||
st->current_address >= st->marker[1].start_address) {
/* Print the actual finished series */
seq_printf(m, "0x%0*lx-0x%0*lx",
width, st->start_address,
width, st->current_address);
delta = (st->current_address - st->start_address) >> 10;
while (!(delta & 0x3ff) && unit[1]) {
delta >>= 10;
unit++;
}
seq_printf(m, "%9lu%c ", delta, *unit);
print_prot(m, st->current_prot, st->level);
if (st->current_address >= st->marker[1].start_address) {
st->marker++;
seq_printf(m, "---[ %s ]---\n", st->marker->name);
}
st->start_address = st->current_address;
st->current_prot = new_prot;
st->level = level;
}
}
/*
* The actual page table walker functions. In order to keep the implementation
* of print_prot() short, we only check and pass _PAGE_INVALID and _PAGE_RO
* flags to note_page() if a region, segment or page table entry is invalid or
* read-only.
* After all it's just a hint that the current level being walked contains an
* invalid or read-only entry.
*/
static void walk_pte_level(struct seq_file *m, struct pg_state *st,
pmd_t *pmd, unsigned long addr)
{
unsigned int prot;
pte_t *pte;
int i;
for (i = 0; i < PTRS_PER_PTE && addr < max_addr; i++) {
st->current_address = addr;
pte = pte_offset_kernel(pmd, addr);
prot = pte_val(*pte) & (_PAGE_RO | _PAGE_INVALID);
note_page(m, st, prot, 4);
addr += PAGE_SIZE;
}
}
static void walk_pmd_level(struct seq_file *m, struct pg_state *st,
pud_t *pud, unsigned long addr)
{
unsigned int prot;
pmd_t *pmd;
int i;
for (i = 0; i < PTRS_PER_PMD && addr < max_addr; i++) {
st->current_address = addr;
pmd = pmd_offset(pud, addr);
if (!pmd_none(*pmd)) {
if (pmd_large(*pmd)) {
prot = pmd_val(*pmd) & _SEGMENT_ENTRY_RO;
note_page(m, st, prot, 3);
} else
walk_pte_level(m, st, pmd, addr);
} else
note_page(m, st, _PAGE_INVALID, 3);
addr += PMD_SIZE;
}
}
static void walk_pud_level(struct seq_file *m, struct pg_state *st,
pgd_t *pgd, unsigned long addr)
{
pud_t *pud;
int i;
for (i = 0; i < PTRS_PER_PUD && addr < max_addr; i++) {
st->current_address = addr;
pud = pud_offset(pgd, addr);
if (!pud_none(*pud))
walk_pmd_level(m, st, pud, addr);
else
note_page(m, st, _PAGE_INVALID, 2);
addr += PUD_SIZE;
}
}
static void walk_pgd_level(struct seq_file *m)
{
unsigned long addr = 0;
struct pg_state st;
pgd_t *pgd;
int i;
memset(&st, 0, sizeof(st));
for (i = 0; i < PTRS_PER_PGD && addr < max_addr; i++) {
st.current_address = addr;
pgd = pgd_offset_k(addr);
if (!pgd_none(*pgd))
walk_pud_level(m, &st, pgd, addr);
else
note_page(m, &st, _PAGE_INVALID, 1);
addr += PGDIR_SIZE;
}
/* Flush out the last page */
st.current_address = max_addr;
note_page(m, &st, 0, 0);
}
static int ptdump_show(struct seq_file *m, void *v)
{
walk_pgd_level(m);
return 0;
}
static int ptdump_open(struct inode *inode, struct file *filp)
{
return single_open(filp, ptdump_show, NULL);
}
static const struct file_operations ptdump_fops = {
.open = ptdump_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int pt_dump_init(void)
{
/*
* Figure out the maximum virtual address being accessible with the
* kernel ASCE. We need this to keep the page table walker functions
* from accessing non-existent entries.
*/
#ifdef CONFIG_32BIT
max_addr = 1UL << 31;
#else
max_addr = (S390_lowcore.kernel_asce & _REGION_ENTRY_TYPE_MASK) >> 2;
max_addr = 1UL << (max_addr * 11 + 31);
address_markers[MODULES_NR].start_address = MODULES_VADDR;
#endif
address_markers[VMEMMAP_NR].start_address = (unsigned long) vmemmap;
address_markers[VMALLOC_NR].start_address = VMALLOC_START;
debugfs_create_file("kernel_page_tables", 0400, NULL, NULL, &ptdump_fops);
return 0;
}
device_initcall(pt_dump_init);
arch/s390/mm/pageattr.c
View file @ e1b28147
......@@ -8,25 +8,38 @@
#include <asm/cacheflush.h>
#include <asm/pgtable.h>
static pte_t *walk_page_table(unsigned long addr)
{
pgd_t *pgdp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
pgdp = pgd_offset_k(addr);
if (pgd_none(*pgdp))
return NULL;
pudp = pud_offset(pgdp, addr);
if (pud_none(*pudp))
return NULL;
pmdp = pmd_offset(pudp, addr);
if (pmd_none(*pmdp) || pmd_large(*pmdp))
return NULL;
ptep = pte_offset_kernel(pmdp, addr);
if (pte_none(*ptep))
return NULL;
return ptep;
}
static void change_page_attr(unsigned long addr, int numpages,
pte_t (*set) (pte_t))
{
pte_t *ptep, pte;
pmd_t *pmdp;
pud_t *pudp;
pgd_t *pgdp;
int i;
for (i = 0; i < numpages; i++) {
pgdp = pgd_offset(&init_mm, addr);
pudp = pud_offset(pgdp, addr);
pmdp = pmd_offset(pudp, addr);
if (pmd_huge(*pmdp)) {
WARN_ON_ONCE(1);
continue;
}
ptep = pte_offset_kernel(pmdp, addr);
ptep = walk_page_table(addr);
if (WARN_ON_ONCE(!ptep))
break;
pte = *ptep;
pte = set(pte);
__ptep_ipte(addr, ptep);
......@@ -40,21 +53,18 @@ int set_memory_ro(unsigned long addr, int numpages)
change_page_attr(addr, numpages, pte_wrprotect);
return 0;
}
EXPORT_SYMBOL_GPL(set_memory_ro);
int set_memory_rw(unsigned long addr, int numpages)
{
change_page_attr(addr, numpages, pte_mkwrite);
return 0;
}
EXPORT_SYMBOL_GPL(set_memory_rw);
/* not possible */
int set_memory_nx(unsigned long addr, int numpages)
{
return 0;
}
EXPORT_SYMBOL_GPL(set_memory_nx);
int set_memory_x(unsigned long addr, int numpages)
{
......
arch/s390/mm/vmem.c
View file @ e1b28147
......@@ -79,7 +79,8 @@ static pte_t __ref *vmem_pte_alloc(unsigned long address)
*/
static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
{
unsigned long address;
unsigned long end = start + size;
unsigned long address = start;
pgd_t *pg_dir;
pud_t *pu_dir;
pmd_t *pm_dir;
......@@ -87,7 +88,7 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
pte_t pte;
int ret = -ENOMEM;
for (address = start; address < start + size; address += PAGE_SIZE) {
while (address < end) {
pg_dir = pgd_offset_k(address);
if (pgd_none(*pg_dir)) {
pu_dir = vmem_pud_alloc();
......@@ -108,12 +109,11 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
pm_dir = pmd_offset(pu_dir, address);
#if defined(CONFIG_64BIT) && !defined(CONFIG_DEBUG_PAGEALLOC)
if (MACHINE_HAS_HPAGE && !(address & ~HPAGE_MASK) &&
(address + HPAGE_SIZE <= start + size) &&
(address >= HPAGE_SIZE)) {
if (MACHINE_HAS_EDAT1 && pmd_none(*pm_dir) && address &&
!(address & ~PMD_MASK) && (address + PMD_SIZE <= end)) {
pte_val(pte) |= _SEGMENT_ENTRY_LARGE;
pmd_val(*pm_dir) = pte_val(pte);
address += HPAGE_SIZE - PAGE_SIZE;
address += PMD_SIZE;
continue;
}
#endif
......@@ -126,10 +126,11 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
pt_dir = pte_offset_kernel(pm_dir, address);
*pt_dir = pte;
address += PAGE_SIZE;
}
ret = 0;
out:
flush_tlb_kernel_range(start, start + size);
flush_tlb_kernel_range(start, end);
return ret;
}
......@@ -139,7 +140,8 @@ static int vmem_add_mem(unsigned long start, unsigned long size, int ro)
*/
static void vmem_remove_range(unsigned long start, unsigned long size)
{
unsigned long address;
unsigned long end = start + size;
unsigned long address = start;
pgd_t *pg_dir;
pud_t *pu_dir;
pmd_t *pm_dir;
......@@ -147,25 +149,32 @@ static void vmem_remove_range(unsigned long start, unsigned long size)
pte_t pte;
pte_val(pte) = _PAGE_TYPE_EMPTY;
for (address = start; address < start + size; address += PAGE_SIZE) {
while (address < end) {
pg_dir = pgd_offset_k(address);
if (pgd_none(*pg_dir)) {
address += PGDIR_SIZE;
continue;
}
pu_dir = pud_offset(pg_dir, address);
if (pud_none(*pu_dir))
if (pud_none(*pu_dir)) {
address += PUD_SIZE;
continue;
}
pm_dir = pmd_offset(pu_dir, address);
if (pmd_none(*pm_dir))
if (pmd_none(*pm_dir)) {
address += PMD_SIZE;
continue;
if (pmd_huge(*pm_dir)) {
}
if (pmd_large(*pm_dir)) {
pmd_clear(pm_dir);
address += HPAGE_SIZE - PAGE_SIZE;
address += PMD_SIZE;
continue;
}
pt_dir = pte_offset_kernel(pm_dir, address);
*pt_dir = pte;
address += PAGE_SIZE;
}
flush_tlb_kernel_range(start, start + size);
flush_tlb_kernel_range(start, end);
}
/*
......@@ -330,8 +339,8 @@ void __init vmem_map_init(void)
unsigned long start, end;
int i;
ro_start = ((unsigned long)&_stext) & PAGE_MASK;
ro_end = PFN_ALIGN((unsigned long)&_eshared);
ro_start = PFN_ALIGN((unsigned long)&_stext);
ro_end = (unsigned long)&_eshared & PAGE_MASK;
for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) {
if (memory_chunk[i].type == CHUNK_CRASHK ||
memory_chunk[i].type == CHUNK_OLDMEM)
......
drivers/s390/block/dcssblk.c
View file @ e1b28147
......@@ -69,23 +69,9 @@ static ssize_t dcssblk_add_store(struct device * dev, struct device_attribute *a
size_t count);
static ssize_t dcssblk_remove_store(struct device * dev, struct device_attribute *attr, const char * buf,
size_t count);
static ssize_t dcssblk_save_store(struct device * dev, struct device_attribute *attr, const char * buf,
size_t count);
static ssize_t dcssblk_save_show(struct device *dev, struct device_attribute *attr, char *buf);
static ssize_t dcssblk_shared_store(struct device * dev, struct device_attribute *attr, const char * buf,
size_t count);
static ssize_t dcssblk_shared_show(struct device *dev, struct device_attribute *attr, char *buf);
static ssize_t dcssblk_seglist_show(struct device *dev,
struct device_attribute *attr,
char *buf);
static DEVICE_ATTR(add, S_IWUSR, NULL, dcssblk_add_store);
static DEVICE_ATTR(remove, S_IWUSR, NULL, dcssblk_remove_store);
static DEVICE_ATTR(save, S_IWUSR | S_IRUSR, dcssblk_save_show,
dcssblk_save_store);
static DEVICE_ATTR(shared, S_IWUSR | S_IRUSR, dcssblk_shared_show,
dcssblk_shared_store);
static DEVICE_ATTR(seglist, S_IRUSR, dcssblk_seglist_show, NULL);
static struct device *dcssblk_root_dev;
......@@ -416,6 +402,8 @@ dcssblk_shared_store(struct device *dev, struct device_attribute *attr, const ch
up_write(&dcssblk_devices_sem);
return rc;
}
static DEVICE_ATTR(shared, S_IWUSR | S_IRUSR, dcssblk_shared_show,
dcssblk_shared_store);
/*
* device attribute for save operation on current copy
......@@ -476,6 +464,8 @@ dcssblk_save_store(struct device *dev, struct device_attribute *attr, const char
up_write(&dcssblk_devices_sem);
return count;
}
static DEVICE_ATTR(save, S_IWUSR | S_IRUSR, dcssblk_save_show,
dcssblk_save_store);
/*
* device attribute for showing all segments in a device
......@@ -502,6 +492,21 @@ dcssblk_seglist_show(struct device *dev, struct device_attribute *attr,
up_read(&dcssblk_devices_sem);
return i;
}
static DEVICE_ATTR(seglist, S_IRUSR, dcssblk_seglist_show, NULL);
static struct attribute *dcssblk_dev_attrs[] = {
&dev_attr_shared.attr,
&dev_attr_save.attr,
&dev_attr_seglist.attr,
NULL,
};
static struct attribute_group dcssblk_dev_attr_group = {
.attrs = dcssblk_dev_attrs,
};
static const struct attribute_group *dcssblk_dev_attr_groups[] = {
&dcssblk_dev_attr_group,
NULL,
};
/*
* device attribute for adding devices
......@@ -590,6 +595,7 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char
dev_set_name(&dev_info->dev, dev_info->segment_name);
dev_info->dev.release = dcssblk_release_segment;
dev_info->dev.groups = dcssblk_dev_attr_groups;
INIT_LIST_HEAD(&dev_info->lh);
dev_info->gd = alloc_disk(DCSSBLK_MINORS_PER_DISK);
if (dev_info->gd == NULL) {
......@@ -637,21 +643,10 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char
* register the device
*/
rc = device_register(&dev_info->dev);
if (rc) {
module_put(THIS_MODULE);
goto dev_list_del;
}
get_device(&dev_info->dev);
rc = device_create_file(&dev_info->dev, &dev_attr_shared);
if (rc)
goto unregister_dev;
rc = device_create_file(&dev_info->dev, &dev_attr_save);
if (rc)
goto unregister_dev;
rc = device_create_file(&dev_info->dev, &dev_attr_seglist);
if (rc)
goto unregister_dev;
goto put_dev;
get_device(&dev_info->dev);
add_disk(dev_info->gd);
switch (dev_info->segment_type) {
......@@ -668,12 +663,11 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char
rc = count;
goto out;
unregister_dev:
put_dev:
list_del(&dev_info->lh);
blk_cleanup_queue(dev_info->dcssblk_queue);
dev_info->gd->queue = NULL;
put_disk(dev_info->gd);
device_unregister(&dev_info->dev);
list_for_each_entry(seg_info, &dev_info->seg_list, lh) {
segment_unload(seg_info->segment_name);
}
......
drivers/s390/crypto/zcrypt_pcixcc.c
View file @ e1b28147
......@@ -39,7 +39,6 @@
#include "zcrypt_msgtype6.h"
#include "zcrypt_pcixcc.h"
#include "zcrypt_cca_key.h"
#include "zcrypt_msgtype6.h"
#define PCIXCC_MIN_MOD_SIZE 16 /* 128 bits */
#define PCIXCC_MIN_MOD_SIZE_OLD 64 /* 512 bits */
......
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