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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Browse Source 
Pull s390 fixes from Martin Schwidefsky:
 "Assorted bug fixes, the mlock2 system call gets added, and one
  improvement.  The boot from dasd devices is now possible from a wider
  range of devices"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: remove SALIPL loader
  s390: wire up mlock2 system call
  s390: remove g5 elf platform support
  s390: avoid cache aliasing under z/VM and KVM
  s390/sclp: _sclp_wait_int(): retain full PSW mask
  s390/zcrypt: Fix initialisation when zcrypt is built-in
  s390/zcrypt: Fix kernel crash on systems without AP bus support
  s390: add support for ipl devices in subchannel sets > 0
  s390/ipl: fix out of bounds access in scpdata_write
  s390/pci_dma: improve debugging of errors during dma map
  s390/pci_dma: handle dma table failures
  s390/pci_dma: unify label of invalid translation table entries
  s390/syscalls: remove system call number calculation
  s390/cio: simplify css_generate_pgid
  s390/diag: add a s390 prefix to the diagnose trace point
  s390/head: fix error message on unsupported hardware
This commit is contained in:
Linus Torvalds 2015-11-18 08:59:29 -08:00
commit 34258a32d9
29 changed files with 247 additions and 278 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/s390/include/asm/cio.h
View File

@ -312,6 +312,7 @@ extern void css_schedule_reprobe(void);
extern void reipl_ccw_dev(struct ccw_dev_id *id);
struct cio_iplinfo {
u8 ssid;
u16 devno;
int is_qdio;
};

13
arch/s390/include/asm/elf.h
View File

@ -206,9 +206,16 @@ do { \
} while (0)
#endif /* CONFIG_COMPAT */
extern unsigned long mmap_rnd_mask;
#define STACK_RND_MASK (test_thread_flag(TIF_31BIT) ? 0x7ff : mmap_rnd_mask)
/*
* Cache aliasing on the latest machines calls for a mapping granularity
* of 512KB. For 64-bit processes use a 512KB alignment and a randomization
* of up to 1GB. For 31-bit processes the virtual address space is limited,
* use no alignment and limit the randomization to 8MB.
*/
#define BRK_RND_MASK (is_32bit_task() ? 0x7ffUL : 0x3ffffUL)
#define MMAP_RND_MASK (is_32bit_task() ? 0x7ffUL : 0x3ff80UL)
#define MMAP_ALIGN_MASK (is_32bit_task() ? 0 : 0x7fUL)
#define STACK_RND_MASK MMAP_RND_MASK
#define ARCH_DLINFO \
do { \

3
arch/s390/include/asm/ipl.h
View File

@ -64,7 +64,8 @@ struct ipl_block_fcp {
struct ipl_block_ccw {
u8 reserved1[84];
u8 reserved2[2];
u16 reserved2 : 13;
u8 ssid : 3;
u16 devno;
u8 vm_flags;
u8 reserved3[3];

4
arch/s390/include/asm/pci_dma.h
View File

@ -195,5 +195,7 @@ void zpci_dma_exit_device(struct zpci_dev *);
void dma_free_seg_table(unsigned long);
unsigned long *dma_alloc_cpu_table(void);
void dma_cleanup_tables(unsigned long *);
void dma_update_cpu_trans(unsigned long *, void *, dma_addr_t, int);
unsigned long *dma_walk_cpu_trans(unsigned long *rto, dma_addr_t dma_addr);
void dma_update_cpu_trans(unsigned long *entry, void *page_addr, int flags);
#endif

6
arch/s390/include/asm/trace/diag.h
View File

@ -19,7 +19,7 @@
#define TRACE_INCLUDE_PATH asm/trace
#define TRACE_INCLUDE_FILE diag
TRACE_EVENT(diagnose,
TRACE_EVENT(s390_diagnose,
TP_PROTO(unsigned short nr),
TP_ARGS(nr),
TP_STRUCT__entry(
@ -32,9 +32,9 @@ TRACE_EVENT(diagnose,
);
#ifdef CONFIG_TRACEPOINTS
void trace_diagnose_norecursion(int diag_nr);
void trace_s390_diagnose_norecursion(int diag_nr);
#else
static inline void trace_diagnose_norecursion(int diag_nr) { }
static inline void trace_s390_diagnose_norecursion(int diag_nr) { }
#endif
#endif /* _TRACE_S390_DIAG_H */

19
arch/s390/include/uapi/asm/unistd.h
View File

@ -192,14 +192,14 @@
#define __NR_set_tid_address 252
#define __NR_fadvise64 253
#define __NR_timer_create 254
#define __NR_timer_settime (__NR_timer_create+1)
#define __NR_timer_gettime (__NR_timer_create+2)
#define __NR_timer_getoverrun (__NR_timer_create+3)
#define __NR_timer_delete (__NR_timer_create+4)
#define __NR_clock_settime (__NR_timer_create+5)
#define __NR_clock_gettime (__NR_timer_create+6)
#define __NR_clock_getres (__NR_timer_create+7)
#define __NR_clock_nanosleep (__NR_timer_create+8)
#define __NR_timer_settime 255
#define __NR_timer_gettime 256
#define __NR_timer_getoverrun 257
#define __NR_timer_delete 258
#define __NR_clock_settime 259
#define __NR_clock_gettime 260
#define __NR_clock_getres 261
#define __NR_clock_nanosleep 262
/* Number 263 is reserved for vserver */
#define __NR_statfs64 265
#define __NR_fstatfs64 266
@ -309,7 +309,8 @@
#define __NR_recvfrom 371
#define __NR_recvmsg 372
#define __NR_shutdown 373
#define NR_syscalls 374
#define __NR_mlock2 374
#define NR_syscalls 375
/*
* There are some system calls that are not present on 64 bit, some

1
arch/s390/kernel/compat_wrapper.c
View File

@ -176,3 +176,4 @@ COMPAT_SYSCALL_WRAP4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr,
COMPAT_SYSCALL_WRAP3(getsockname, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len);
COMPAT_SYSCALL_WRAP3(getpeername, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len);
COMPAT_SYSCALL_WRAP6(sendto, int, fd, void __user *, buff, size_t, len, unsigned int, flags, struct sockaddr __user *, addr, int, addr_len);
COMPAT_SYSCALL_WRAP3(mlock2, unsigned long, start, size_t, len, int, flags);

4
arch/s390/kernel/diag.c
View File

@ -121,14 +121,14 @@ device_initcall(show_diag_stat_init);
void diag_stat_inc(enum diag_stat_enum nr)
{
this_cpu_inc(diag_stat.counter[nr]);
trace_diagnose(diag_map[nr].code);
trace_s390_diagnose(diag_map[nr].code);
}
EXPORT_SYMBOL(diag_stat_inc);
void diag_stat_inc_norecursion(enum diag_stat_enum nr)
{
this_cpu_inc(diag_stat.counter[nr]);
trace_diagnose_norecursion(diag_map[nr].code);
trace_s390_diagnose_norecursion(diag_map[nr].code);
}
EXPORT_SYMBOL(diag_stat_inc_norecursion);

95
arch/s390/kernel/head.S
View File

@ -26,6 +26,7 @@
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
#include <asm/page.h>
#include <asm/ptrace.h>
#define ARCH_OFFSET 4
@ -59,19 +60,6 @@ __HEAD
.long 0x020006e0,0x20000050
.org 0x200
#
# subroutine to set architecture mode
#
.Lsetmode:
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
br %r14
#
# subroutine to wait for end I/O
@ -159,7 +147,14 @@ __HEAD
.long 0x02200050,0x00000000
iplstart:
bas %r14,.Lsetmode # Immediately switch to 64 bit mode
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
lh %r1,0xb8 # test if subchannel number
bct %r1,.Lnoload # is valid
l %r1,0xb8 # load ipl subchannel number
@ -268,71 +263,6 @@ iplstart:
.align 8
.Lcpuid:.fill 8,1,0
#
# SALIPL loader support. Based on a patch by Rob van der Heij.
# This entry point is called directly from the SALIPL loader and
# doesn't need a builtin ipl record.
#
.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
l %r8,.cmd # pointer to command buffer
ltr %r9,%r9 # do we have SALIPL parameters?
bp .sk8x8
mvc 0(64,%r8),0x00b0 # copy saved registers
xc 64(240-64,%r8),0(%r8) # remainder of buffer
tr 0(64,%r8),.lowcase
b .gotr
.sk8x8:
mvc 0(240,%r8),0(%r9) # copy iplparms into buffer
.gotr:
slr %r0,%r0
st %r0,INITRD_SIZE+ARCH_OFFSET-PARMAREA(%r11)
st %r0,INITRD_START+ARCH_OFFSET-PARMAREA(%r11)
j startup # continue with startup
.cmd: .long COMMAND_LINE # address of command line buffer
.parm: .long PARMAREA
.lowcase:
.byte 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07
.byte 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f
.byte 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17
.byte 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f
.byte 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27
.byte 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f
.byte 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37
.byte 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f
.byte 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47
.byte 0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f
.byte 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57
.byte 0x58,0x59,0x5a,0x5b,0x5c,0x5d,0x5e,0x5f
.byte 0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67
.byte 0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f
.byte 0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77
.byte 0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f
.byte 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87
.byte 0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f
.byte 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97
.byte 0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f
.byte 0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7
.byte 0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf
.byte 0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7
.byte 0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0xbe,0xbf
.byte 0xc0,0x81,0x82,0x83,0x84,0x85,0x86,0x87 # .abcdefg
.byte 0x88,0x89,0xca,0xcb,0xcc,0xcd,0xce,0xcf # hi
.byte 0xd0,0x91,0x92,0x93,0x94,0x95,0x96,0x97 # .jklmnop
.byte 0x98,0x99,0xda,0xdb,0xdc,0xdd,0xde,0xdf # qr
.byte 0xe0,0xe1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7 # ..stuvwx
.byte 0xa8,0xa9,0xea,0xeb,0xec,0xed,0xee,0xef # yz
.byte 0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7
.byte 0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff
#
# startup-code at 0x10000, running in absolute addressing mode
# this is called either by the ipl loader or directly by PSW restart
@ -364,7 +294,7 @@ ENTRY(startup_kdump)
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
sam64 # switch to 64 bit addressing mode
basr %r13,0 # get base
.LPG0:
xc 0x200(256),0x200 # partially clear lowcore
@ -395,7 +325,7 @@ ENTRY(startup_kdump)
jnz 1b
j 4f
2: l %r15,.Lstack-.LPG0(%r13)
ahi %r15,-96
ahi %r15,-STACK_FRAME_OVERHEAD
la %r2,.Lals_string-.LPG0(%r13)
l %r3,.Lsclp_print-.LPG0(%r13)
basr %r14,%r3
@ -429,8 +359,7 @@ ENTRY(startup_kdump)
.long 1, 0xc0000000
#endif
4:
/* Continue with 64bit startup code in head64.S */
sam64 # switch to 64 bit mode
/* Continue with startup code in head64.S */
jg startup_continue
.align 8

65
arch/s390/kernel/ipl.c
View File

@ -121,6 +121,7 @@ static char *dump_type_str(enum dump_type type)
* Must be in data section since the bss section
* is not cleared when these are accessed.
*/
static u8 ipl_ssid __attribute__((__section__(".data"))) = 0;
static u16 ipl_devno __attribute__((__section__(".data"))) = 0;
u32 ipl_flags __attribute__((__section__(".data"))) = 0;
@ -197,6 +198,33 @@ static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \
return snprintf(page, PAGE_SIZE, _format, ##args); \
}
#define IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk) \
static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
struct kobj_attribute *attr, \
const char *buf, size_t len) \
{ \
unsigned long long ssid, devno; \
\
if (sscanf(buf, "0.%llx.%llx\n", &ssid, &devno) != 2) \
return -EINVAL; \
\
if (ssid > __MAX_SSID || devno > __MAX_SUBCHANNEL) \
return -EINVAL; \
\
_ipl_blk.ssid = ssid; \
_ipl_blk.devno = devno; \
return len; \
}
#define DEFINE_IPL_CCW_ATTR_RW(_prefix, _name, _ipl_blk) \
IPL_ATTR_SHOW_FN(_prefix, _name, "0.%x.%04x\n", \
_ipl_blk.ssid, _ipl_blk.devno); \
IPL_ATTR_CCW_STORE_FN(_prefix, _name, _ipl_blk); \
static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
__ATTR(_name, (S_IRUGO | S_IWUSR), \
sys_##_prefix##_##_name##_show, \
sys_##_prefix##_##_name##_store) \
#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \
IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \
static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
@ -395,7 +423,7 @@ static ssize_t sys_ipl_device_show(struct kobject *kobj,
switch (ipl_info.type) {
case IPL_TYPE_CCW:
return sprintf(page, "0.0.%04x\n", ipl_devno);
return sprintf(page, "0.%x.%04x\n", ipl_ssid, ipl_devno);
case IPL_TYPE_FCP:
case IPL_TYPE_FCP_DUMP:
return sprintf(page, "0.0.%04x\n", ipl->ipl_info.fcp.devno);
@ -687,21 +715,14 @@ static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj,
struct bin_attribute *attr,
char *buf, loff_t off, size_t count)
{
size_t scpdata_len = count;
size_t padding;
size_t scpdata_len;
if (off < 0)
if (off)
return -EINVAL;
if (off >= DIAG308_SCPDATA_SIZE)
return -ENOSPC;
if (count > DIAG308_SCPDATA_SIZE - off)
count = DIAG308_SCPDATA_SIZE - off;
memcpy(reipl_block_fcp->ipl_info.fcp.scp_data, buf + off, count);
scpdata_len = off + count;
memcpy(reipl_block_fcp->ipl_info.fcp.scp_data, buf, count);
if (scpdata_len % 8) {
padding = 8 - (scpdata_len % 8);
memset(reipl_block_fcp->ipl_info.fcp.scp_data + scpdata_len,
@ -717,7 +738,7 @@ static ssize_t reipl_fcp_scpdata_write(struct file *filp, struct kobject *kobj,
}
static struct bin_attribute sys_reipl_fcp_scp_data_attr =
__BIN_ATTR(scp_data, (S_IRUGO | S_IWUSR), reipl_fcp_scpdata_read,
reipl_fcp_scpdata_write, PAGE_SIZE);
reipl_fcp_scpdata_write, DIAG308_SCPDATA_SIZE);
static struct bin_attribute *reipl_fcp_bin_attrs[] = {
&sys_reipl_fcp_scp_data_attr,
@ -814,9 +835,7 @@ static struct attribute_group reipl_fcp_attr_group = {
};
/* CCW reipl device attributes */
DEFINE_IPL_ATTR_RW(reipl_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
reipl_block_ccw->ipl_info.ccw.devno);
DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ipl_info.ccw);
/* NSS wrapper */
static ssize_t reipl_nss_loadparm_show(struct kobject *kobj,
@ -1056,8 +1075,8 @@ static void __reipl_run(void *unused)
switch (reipl_method) {
case REIPL_METHOD_CCW_CIO:
devid.ssid = reipl_block_ccw->ipl_info.ccw.ssid;
devid.devno = reipl_block_ccw->ipl_info.ccw.devno;
devid.ssid = 0;
reipl_ccw_dev(&devid);
break;
case REIPL_METHOD_CCW_VM:
@ -1192,6 +1211,7 @@ static int __init reipl_ccw_init(void)
reipl_block_ccw_init(reipl_block_ccw);
if (ipl_info.type == IPL_TYPE_CCW) {
reipl_block_ccw->ipl_info.ccw.ssid = ipl_ssid;
reipl_block_ccw->ipl_info.ccw.devno = ipl_devno;
reipl_block_ccw_fill_parms(reipl_block_ccw);
}
@ -1336,9 +1356,7 @@ static struct attribute_group dump_fcp_attr_group = {
};
/* CCW dump device attributes */
DEFINE_IPL_ATTR_RW(dump_ccw, device, "0.0.%04llx\n", "0.0.%llx\n",
dump_block_ccw->ipl_info.ccw.devno);
DEFINE_IPL_CCW_ATTR_RW(dump_ccw, device, dump_block_ccw->ipl_info.ccw);
static struct attribute *dump_ccw_attrs[] = {
&sys_dump_ccw_device_attr.attr,
@ -1418,8 +1436,8 @@ static void __dump_run(void *unused)
switch (dump_method) {
case DUMP_METHOD_CCW_CIO:
devid.ssid = dump_block_ccw->ipl_info.ccw.ssid;
devid.devno = dump_block_ccw->ipl_info.ccw.devno;
devid.ssid = 0;
reipl_ccw_dev(&devid);
break;
case DUMP_METHOD_CCW_VM:
@ -1939,14 +1957,14 @@ void __init setup_ipl(void)
ipl_info.type = get_ipl_type();
switch (ipl_info.type) {
case IPL_TYPE_CCW:
ipl_info.data.ccw.dev_id.ssid = ipl_ssid;
ipl_info.data.ccw.dev_id.devno = ipl_devno;
ipl_info.data.ccw.dev_id.ssid = 0;
break;
case IPL_TYPE_FCP:
case IPL_TYPE_FCP_DUMP:
ipl_info.data.fcp.dev_id.ssid = 0;
ipl_info.data.fcp.dev_id.devno =
IPL_PARMBLOCK_START->ipl_info.fcp.devno;
ipl_info.data.fcp.dev_id.ssid = 0;
ipl_info.data.fcp.wwpn = IPL_PARMBLOCK_START->ipl_info.fcp.wwpn;
ipl_info.data.fcp.lun = IPL_PARMBLOCK_START->ipl_info.fcp.lun;
break;
@ -1978,6 +1996,7 @@ void __init ipl_save_parameters(void)
if (cio_get_iplinfo(&iplinfo))
return;
ipl_ssid = iplinfo.ssid;
ipl_devno = iplinfo.devno;
ipl_flags |= IPL_DEVNO_VALID;
if (!iplinfo.is_qdio)

6
arch/s390/kernel/process.c
View File

@ -243,11 +243,7 @@ unsigned long arch_align_stack(unsigned long sp)
static inline unsigned long brk_rnd(void)
{
/* 8MB for 32bit, 1GB for 64bit */
if (is_32bit_task())
return (get_random_int() & 0x7ffUL) << PAGE_SHIFT;
else
return (get_random_int() & 0x3ffffUL) << PAGE_SHIFT;
return (get_random_int() & BRK_RND_MASK) << PAGE_SHIFT;
}
unsigned long arch_randomize_brk(struct mm_struct *mm)

2
arch/s390/kernel/sclp.c
View File

@ -21,7 +21,7 @@ static void _sclp_wait_int(void)
__ctl_load(cr0_new, 0, 0);
psw_ext_save = S390_lowcore.external_new_psw;
psw_mask = __extract_psw() & (PSW_MASK_EA | PSW_MASK_BA);
psw_mask = __extract_psw();
S390_lowcore.external_new_psw.mask = psw_mask;
psw_wait.mask = psw_mask | PSW_MASK_EXT | PSW_MASK_WAIT;
S390_lowcore.ext_int_code = 0;

3
arch/s390/kernel/setup.c
View File

@ -764,9 +764,6 @@ static int __init setup_hwcaps(void)
get_cpu_id(&cpu_id);
add_device_randomness(&cpu_id, sizeof(cpu_id));
switch (cpu_id.machine) {
case 0x9672:
strcpy(elf_platform, "g5");
break;
case 0x2064:
case 0x2066:
default: /* Use "z900" as default for 64 bit kernels. */

1
arch/s390/kernel/syscalls.S
View File

@ -382,3 +382,4 @@ SYSCALL(sys_sendmsg,compat_sys_sendmsg) /* 370 */
SYSCALL(sys_recvfrom,compat_sys_recvfrom)
SYSCALL(sys_recvmsg,compat_sys_recvmsg)
SYSCALL(sys_shutdown,sys_shutdown)
SYSCALL(sys_mlock2,compat_sys_mlock2)

6
arch/s390/kernel/trace.c
View File

@ -9,11 +9,11 @@
#define CREATE_TRACE_POINTS
#include <asm/trace/diag.h>
EXPORT_TRACEPOINT_SYMBOL(diagnose);
EXPORT_TRACEPOINT_SYMBOL(s390_diagnose);
static DEFINE_PER_CPU(unsigned int, diagnose_trace_depth);
void trace_diagnose_norecursion(int diag_nr)
void trace_s390_diagnose_norecursion(int diag_nr)
{
unsigned long flags;
unsigned int *depth;
@ -22,7 +22,7 @@ void trace_diagnose_norecursion(int diag_nr)
depth = this_cpu_ptr(&diagnose_trace_depth);
if (*depth == 0) {
(*depth)++;
trace_diagnose(diag_nr);
trace_s390_diagnose(diag_nr);
(*depth)--;
}
local_irq_restore(flags);

30
arch/s390/mm/init.c
View File

@ -48,37 +48,13 @@ EXPORT_SYMBOL(zero_page_mask);
static void __init setup_zero_pages(void)
{
struct cpuid cpu_id;
unsigned int order;
struct page *page;
int i;
get_cpu_id(&cpu_id);
switch (cpu_id.machine) {
case 0x9672: /* g5 */
case 0x2064: /* z900 */
case 0x2066: /* z900 */
case 0x2084: /* z990 */
case 0x2086: /* z990 */
case 0x2094: /* z9-109 */
case 0x2096: /* z9-109 */
order = 0;
break;
case 0x2097: /* z10 */
case 0x2098: /* z10 */
case 0x2817: /* z196 */
case 0x2818: /* z196 */
order = 2;
break;
case 0x2827: /* zEC12 */
case 0x2828: /* zEC12 */
order = 5;
break;
case 0x2964: /* z13 */
default:
order = 7;
break;
}
/* Latest machines require a mapping granularity of 512KB */
order = 7;
/* Limit number of empty zero pages for small memory sizes */
while (order > 2 && (totalram_pages >> 10) < (1UL << order))
order--;

60
arch/s390/mm/mmap.c
View File

@ -31,9 +31,6 @@
#include <linux/security.h>
#include <asm/pgalloc.h>
unsigned long mmap_rnd_mask;
static unsigned long mmap_align_mask;
static unsigned long stack_maxrandom_size(void)
{
if (!(current->flags & PF_RANDOMIZE))
@ -62,10 +59,7 @@ static inline int mmap_is_legacy(void)
unsigned long arch_mmap_rnd(void)
{
if (is_32bit_task())
return (get_random_int() & 0x7ff) << PAGE_SHIFT;
else
return (get_random_int() & mmap_rnd_mask) << PAGE_SHIFT;
return (get_random_int() & MMAP_RND_MASK) << PAGE_SHIFT;
}
static unsigned long mmap_base_legacy(unsigned long rnd)
@ -92,7 +86,6 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
struct vm_unmapped_area_info info;
int do_color_align;
if (len > TASK_SIZE - mmap_min_addr)
return -ENOMEM;
@ -108,15 +101,14 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
return addr;
}
do_color_align = 0;
if (filp || (flags & MAP_SHARED))
do_color_align = !is_32bit_task();
info.flags = 0;
info.length = len;
info.low_limit = mm->mmap_base;
info.high_limit = TASK_SIZE;
info.align_mask = do_color_align ? (mmap_align_mask << PAGE_SHIFT) : 0;
if (filp || (flags & MAP_SHARED))
info.align_mask = MMAP_ALIGN_MASK << PAGE_SHIFT;
else
info.align_mask = 0;
info.align_offset = pgoff << PAGE_SHIFT;
return vm_unmapped_area(&info);
}
@ -130,7 +122,6 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
struct mm_struct *mm = current->mm;
unsigned long addr = addr0;
struct vm_unmapped_area_info info;
int do_color_align;
/* requested length too big for entire address space */
if (len > TASK_SIZE - mmap_min_addr)
@ -148,15 +139,14 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
return addr;
}
do_color_align = 0;
if (filp || (flags & MAP_SHARED))
do_color_align = !is_32bit_task();
info.flags = VM_UNMAPPED_AREA_TOPDOWN;
info.length = len;
info.low_limit = max(PAGE_SIZE, mmap_min_addr);
info.high_limit = mm->mmap_base;
info.align_mask = do_color_align ? (mmap_align_mask << PAGE_SHIFT) : 0;
if (filp || (flags & MAP_SHARED))
info.align_mask = MMAP_ALIGN_MASK << PAGE_SHIFT;
else
info.align_mask = 0;
info.align_offset = pgoff << PAGE_SHIFT;
addr = vm_unmapped_area(&info);
@ -254,35 +244,3 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
mm->get_unmapped_area = s390_get_unmapped_area_topdown;
}
}
static int __init setup_mmap_rnd(void)
{
struct cpuid cpu_id;
get_cpu_id(&cpu_id);
switch (cpu_id.machine) {
case 0x9672:
case 0x2064:
case 0x2066:
case 0x2084:
case 0x2086:
case 0x2094:
case 0x2096:
case 0x2097:
case 0x2098:
case 0x2817:
case 0x2818:
case 0x2827:
case 0x2828:
mmap_rnd_mask = 0x7ffUL;
mmap_align_mask = 0UL;
break;
case 0x2964: /* z13 */
default:
mmap_rnd_mask = 0x3ff80UL;
mmap_align_mask = 0x7fUL;
break;
}
return 0;
}
early_initcall(setup_mmap_rnd);

84
arch/s390/pci/pci_dma.c
View File

@ -33,7 +33,7 @@ unsigned long *dma_alloc_cpu_table(void)
return NULL;
for (entry = table; entry < table + ZPCI_TABLE_ENTRIES; entry++)
*entry = ZPCI_TABLE_INVALID | ZPCI_TABLE_PROTECTED;
*entry = ZPCI_TABLE_INVALID;
return table;
}
@ -51,7 +51,7 @@ static unsigned long *dma_alloc_page_table(void)
return NULL;
for (entry = table; entry < table + ZPCI_PT_ENTRIES; entry++)
*entry = ZPCI_PTE_INVALID | ZPCI_TABLE_PROTECTED;
*entry = ZPCI_PTE_INVALID;
return table;
}
@ -95,7 +95,7 @@ static unsigned long *dma_get_page_table_origin(unsigned long *entry)
return pto;
}
static unsigned long *dma_walk_cpu_trans(unsigned long *rto, dma_addr_t dma_addr)
unsigned long *dma_walk_cpu_trans(unsigned long *rto, dma_addr_t dma_addr)
{
unsigned long *sto, *pto;
unsigned int rtx, sx, px;
@ -114,20 +114,10 @@ static unsigned long *dma_walk_cpu_trans(unsigned long *rto, dma_addr_t dma_addr
return &pto[px];
}
void dma_update_cpu_trans(unsigned long *dma_table, void *page_addr,
dma_addr_t dma_addr, int flags)
void dma_update_cpu_trans(unsigned long *entry, void *page_addr, int flags)
{
unsigned long *entry;
entry = dma_walk_cpu_trans(dma_table, dma_addr);
if (!entry) {
WARN_ON_ONCE(1);
return;
}
if (flags & ZPCI_PTE_INVALID) {
invalidate_pt_entry(entry);
return;
} else {
set_pt_pfaa(entry, page_addr);
validate_pt_entry(entry);
@ -146,18 +136,25 @@ static int dma_update_trans(struct zpci_dev *zdev, unsigned long pa,
u8 *page_addr = (u8 *) (pa & PAGE_MASK);
dma_addr_t start_dma_addr = dma_addr;
unsigned long irq_flags;
unsigned long *entry;
int i, rc = 0;
if (!nr_pages)
return -EINVAL;
spin_lock_irqsave(&zdev->dma_table_lock, irq_flags);
if (!zdev->dma_table)
if (!zdev->dma_table) {
rc = -EINVAL;
goto no_refresh;
}
for (i = 0; i < nr_pages; i++) {
dma_update_cpu_trans(zdev->dma_table, page_addr, dma_addr,
flags);
entry = dma_walk_cpu_trans(zdev->dma_table, dma_addr);
if (!entry) {
rc = -ENOMEM;
goto undo_cpu_trans;
}
dma_update_cpu_trans(entry, page_addr, flags);
page_addr += PAGE_SIZE;
dma_addr += PAGE_SIZE;
}
@ -176,6 +173,18 @@ static int dma_update_trans(struct zpci_dev *zdev, unsigned long pa,
rc = zpci_refresh_trans((u64) zdev->fh << 32, start_dma_addr,
nr_pages * PAGE_SIZE);
undo_cpu_trans:
if (rc && ((flags & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_VALID)) {
flags = ZPCI_PTE_INVALID;
while (i-- > 0) {
page_addr -= PAGE_SIZE;
dma_addr -= PAGE_SIZE;
entry = dma_walk_cpu_trans(zdev->dma_table, dma_addr);
if (!entry)
break;
dma_update_cpu_trans(entry, page_addr, flags);
}
}
no_refresh:
spin_unlock_irqrestore(&zdev->dma_table_lock, irq_flags);
@ -260,6 +269,16 @@ out:
spin_unlock_irqrestore(&zdev->iommu_bitmap_lock, flags);
}
static inline void zpci_err_dma(unsigned long rc, unsigned long addr)
{
struct {
unsigned long rc;
unsigned long addr;
} __packed data = {rc, addr};
zpci_err_hex(&data, sizeof(data));
}
static dma_addr_t s390_dma_map_pages(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction direction,
@ -270,33 +289,40 @@ static dma_addr_t s390_dma_map_pages(struct device *dev, struct page *page,
unsigned long pa = page_to_phys(page) + offset;
int flags = ZPCI_PTE_VALID;
dma_addr_t dma_addr;
int ret;
/* This rounds up number of pages based on size and offset */
nr_pages = iommu_num_pages(pa, size, PAGE_SIZE);
iommu_page_index = dma_alloc_iommu(zdev, nr_pages);
if (iommu_page_index == -1)
if (iommu_page_index == -1) {
ret = -ENOSPC;
goto out_err;
}
/* Use rounded up size */
size = nr_pages * PAGE_SIZE;
dma_addr = zdev->start_dma + iommu_page_index * PAGE_SIZE;
if (dma_addr + size > zdev->end_dma)
if (dma_addr + size > zdev->end_dma) {
ret = -ERANGE;
goto out_free;
}
if (direction == DMA_NONE || direction == DMA_TO_DEVICE)
flags |= ZPCI_TABLE_PROTECTED;
if (!dma_update_trans(zdev, pa, dma_addr, size, flags)) {
atomic64_add(nr_pages, &zdev->mapped_pages);
return dma_addr + (offset & ~PAGE_MASK);
}
ret = dma_update_trans(zdev, pa, dma_addr, size, flags);
if (ret)
goto out_free;
atomic64_add(nr_pages, &zdev->mapped_pages);
return dma_addr + (offset & ~PAGE_MASK);
out_free:
dma_free_iommu(zdev, iommu_page_index, nr_pages);
out_err:
zpci_err("map error:\n");
zpci_err_hex(&pa, sizeof(pa));
zpci_err_dma(ret, pa);
return DMA_ERROR_CODE;
}
@ -306,14 +332,16 @@ static void s390_dma_unmap_pages(struct device *dev, dma_addr_t dma_addr,
{
struct zpci_dev *zdev = to_zpci(to_pci_dev(dev));
unsigned long iommu_page_index;
int npages;
int npages, ret;
npages = iommu_num_pages(dma_addr, size, PAGE_SIZE);
dma_addr = dma_addr & PAGE_MASK;
if (dma_update_trans(zdev, 0, dma_addr, npages * PAGE_SIZE,
ZPCI_TABLE_PROTECTED | ZPCI_PTE_INVALID)) {
ret = dma_update_trans(zdev, 0, dma_addr, npages * PAGE_SIZE,
ZPCI_PTE_INVALID);
if (ret) {
zpci_err("unmap error:\n");
zpci_err_hex(&dma_addr, sizeof(dma_addr));
zpci_err_dma(ret, dma_addr);
return;
}
atomic64_add(npages, &zdev->unmapped_pages);

23
drivers/iommu/s390-iommu.c
View File

@ -216,6 +216,7 @@ static int s390_iommu_update_trans(struct s390_domain *s390_domain,
u8 *page_addr = (u8 *) (pa & PAGE_MASK);
dma_addr_t start_dma_addr = dma_addr;
unsigned long irq_flags, nr_pages, i;
unsigned long *entry;
int rc = 0;
if (dma_addr < s390_domain->domain.geometry.aperture_start ||
@ -228,8 +229,12 @@ static int s390_iommu_update_trans(struct s390_domain *s390_domain,
spin_lock_irqsave(&s390_domain->dma_table_lock, irq_flags);
for (i = 0; i < nr_pages; i++) {
dma_update_cpu_trans(s390_domain->dma_table, page_addr,
dma_addr, flags);
entry = dma_walk_cpu_trans(s390_domain->dma_table, dma_addr);
if (!entry) {
rc = -ENOMEM;
goto undo_cpu_trans;
}
dma_update_cpu_trans(entry, page_addr, flags);
page_addr += PAGE_SIZE;
dma_addr += PAGE_SIZE;
}
@ -242,6 +247,20 @@ static int s390_iommu_update_trans(struct s390_domain *s390_domain,
break;
}
spin_unlock(&s390_domain->list_lock);
undo_cpu_trans:
if (rc && ((flags & ZPCI_PTE_VALID_MASK) == ZPCI_PTE_VALID)) {
flags = ZPCI_PTE_INVALID;
while (i-- > 0) {
page_addr -= PAGE_SIZE;
dma_addr -= PAGE_SIZE;
entry = dma_walk_cpu_trans(s390_domain->dma_table,
dma_addr);
if (!entry)
break;
dma_update_cpu_trans(entry, page_addr, flags);
}
}
spin_unlock_irqrestore(&s390_domain->dma_table_lock, irq_flags);
return rc;

37
drivers/s390/cio/chsc.c
View File

@ -1080,28 +1080,10 @@ void __init chsc_init_cleanup(void)
free_page((unsigned long)sei_page);
}
int chsc_enable_facility(int operation_code)
int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code)
{
unsigned long flags;
int ret;
struct {
struct chsc_header request;
u8 reserved1:4;
u8 format:4;
u8 reserved2;
u16 operation_code;
u32 reserved3;
u32 reserved4;
u32 operation_data_area[252];
struct chsc_header response;
u32 reserved5:4;
u32 format2:4;
u32 reserved6:24;
} __attribute__ ((packed)) *sda_area;
spin_lock_irqsave(&chsc_page_lock, flags);
memset(chsc_page, 0, PAGE_SIZE);
sda_area = chsc_page;
sda_area->request.length = 0x0400;
sda_area->request.code = 0x0031;
sda_area->operation_code = operation_code;
@ -1119,10 +1101,25 @@ int chsc_enable_facility(int operation_code)
default:
ret = chsc_error_from_response(sda_area->response.code);
}
out:
return ret;
}
int chsc_enable_facility(int operation_code)
{
struct chsc_sda_area *sda_area;
unsigned long flags;
int ret;
spin_lock_irqsave(&chsc_page_lock, flags);
memset(chsc_page, 0, PAGE_SIZE);
sda_area = chsc_page;
ret = __chsc_enable_facility(sda_area, operation_code);
if (ret != 0)
CIO_CRW_EVENT(2, "chsc: sda (oc=%x) failed (rc=%04x)\n",
operation_code, sda_area->response.code);
out:
spin_unlock_irqrestore(&chsc_page_lock, flags);
return ret;
}

15
drivers/s390/cio/chsc.h
View File

@ -115,6 +115,20 @@ struct chsc_scpd {
u8 data[PAGE_SIZE - 20];
} __attribute__ ((packed));
struct chsc_sda_area {
struct chsc_header request;
u8 :4;
u8 format:4;
u8 :8;
u16 operation_code;
u32 :32;
u32 :32;
u32 operation_data_area[252];
struct chsc_header response;
u32 :4;
u32 format2:4;
u32 :24;
} __packed __aligned(PAGE_SIZE);
extern int chsc_get_ssd_info(struct subchannel_id schid,
struct chsc_ssd_info *ssd);
@ -122,6 +136,7 @@ extern int chsc_determine_css_characteristics(void);
extern int chsc_init(void);
extern void chsc_init_cleanup(void);
int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code);
extern int chsc_enable_facility(int);
struct channel_subsystem;
extern int chsc_secm(struct channel_subsystem *, int);

14
drivers/s390/cio/cio.c
View File

@ -925,18 +925,32 @@ void reipl_ccw_dev(struct ccw_dev_id *devid)
int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo)
{
static struct chsc_sda_area sda_area __initdata;
struct subchannel_id schid;
struct schib schib;
schid = *(struct subchannel_id *)&S390_lowcore.subchannel_id;
if (!schid.one)
return -ENODEV;
if (schid.ssid) {
/*
* Firmware should have already enabled MSS but whoever started
* the kernel might have initiated a channel subsystem reset.
* Ensure that MSS is enabled.
*/
memset(&sda_area, 0, sizeof(sda_area));
if (__chsc_enable_facility(&sda_area, CHSC_SDA_OC_MSS))
return -ENODEV;
}
if (stsch_err(schid, &schib))
return -ENODEV;
if (schib.pmcw.st != SUBCHANNEL_TYPE_IO)
return -ENODEV;
if (!schib.pmcw.dnv)
return -ENODEV;
iplinfo->ssid = schid.ssid;
iplinfo->devno = schib.pmcw.dev;
iplinfo->is_qdio = schib.pmcw.qf;
return 0;

5
drivers/s390/cio/css.c
View File

@ -702,17 +702,12 @@ css_generate_pgid(struct channel_subsystem *css, u32 tod_high)
css->global_pgid.pgid_high.ext_cssid.version = 0x80;
css->global_pgid.pgid_high.ext_cssid.cssid = css->cssid;
} else {
#ifdef CONFIG_SMP
css->global_pgid.pgid_high.cpu_addr = stap();
#else
css->global_pgid.pgid_high.cpu_addr = 0;
#endif
}
get_cpu_id(&cpu_id);
css->global_pgid.cpu_id = cpu_id.ident;
css->global_pgid.cpu_model = cpu_id.machine;
css->global_pgid.tod_high = tod_high;
}
static void

7
drivers/s390/crypto/Makefile
View File

@ -3,6 +3,9 @@
#
ap-objs := ap_bus.o
obj-$(CONFIG_ZCRYPT) += ap.o zcrypt_api.o zcrypt_pcixcc.o
obj-$(CONFIG_ZCRYPT) += zcrypt_cex2a.o zcrypt_cex4.o
# zcrypt_api depends on ap
obj-$(CONFIG_ZCRYPT) += ap.o zcrypt_api.o
# msgtype* depend on zcrypt_api
obj-$(CONFIG_ZCRYPT) += zcrypt_msgtype6.o zcrypt_msgtype50.o
# adapter drivers depend on ap, zcrypt_api and msgtype*
obj-$(CONFIG_ZCRYPT) += zcrypt_pcixcc.o zcrypt_cex2a.o zcrypt_cex4.o

6
drivers/s390/crypto/ap_bus.c
View File

@ -74,6 +74,7 @@ static struct device *ap_root_device = NULL;
static struct ap_config_info *ap_configuration;
static DEFINE_SPINLOCK(ap_device_list_lock);
static LIST_HEAD(ap_device_list);
static bool initialised;
/*
* Workqueue timer for bus rescan.
@ -1384,6 +1385,9 @@ int ap_driver_register(struct ap_driver *ap_drv, struct module *owner,
{
struct device_driver *drv = &ap_drv->driver;
if (!initialised)
return -ENODEV;
drv->bus = &ap_bus_type;
drv->probe = ap_device_probe;
drv->remove = ap_device_remove;
@ -1808,6 +1812,7 @@ int __init ap_module_init(void)
goto out_pm;
queue_work(system_long_wq, &ap_scan_work);
initialised = true;
return 0;
@ -1837,6 +1842,7 @@ void ap_module_exit(void)
{
int i;
initialised = false;
ap_reset_domain();
ap_poll_thread_stop();
del_timer_sync(&ap_config_timer);

10
drivers/s390/crypto/zcrypt_api.c
View File

@ -317,11 +317,9 @@ EXPORT_SYMBOL(zcrypt_device_unregister);
void zcrypt_msgtype_register(struct zcrypt_ops *zops)
{
if (zops->owner) {
spin_lock_bh(&zcrypt_ops_list_lock);
list_add_tail(&zops->list, &zcrypt_ops_list);
spin_unlock_bh(&zcrypt_ops_list_lock);
}
spin_lock_bh(&zcrypt_ops_list_lock);
list_add_tail(&zops->list, &zcrypt_ops_list);
spin_unlock_bh(&zcrypt_ops_list_lock);
}
EXPORT_SYMBOL(zcrypt_msgtype_register);
@ -342,7 +340,7 @@ struct zcrypt_ops *__ops_lookup(unsigned char *name, int variant)
spin_lock_bh(&zcrypt_ops_list_lock);
list_for_each_entry(zops, &zcrypt_ops_list, list) {
if ((zops->variant == variant) &&
(!strncmp(zops->owner->name, name, MODULE_NAME_LEN))) {
(!strncmp(zops->name, name, sizeof(zops->name)))) {
found = 1;
break;
}

1
drivers/s390/crypto/zcrypt_api.h
View File

@ -96,6 +96,7 @@ struct zcrypt_ops {
struct list_head list; /* zcrypt ops list. */
struct module *owner;
int variant;
char name[128];
};
struct zcrypt_device {

1
drivers/s390/crypto/zcrypt_msgtype50.c
View File

@ -513,6 +513,7 @@ static struct zcrypt_ops zcrypt_msgtype50_ops = {
.rsa_modexpo = zcrypt_cex2a_modexpo,
.rsa_modexpo_crt = zcrypt_cex2a_modexpo_crt,
.owner = THIS_MODULE,
.name = MSGTYPE50_NAME,
.variant = MSGTYPE50_VARIANT_DEFAULT,
};

3
drivers/s390/crypto/zcrypt_msgtype6.c
View File

@ -1119,6 +1119,7 @@ static long zcrypt_msgtype6_rng(struct zcrypt_device *zdev,
*/
static struct zcrypt_ops zcrypt_msgtype6_norng_ops = {
.owner = THIS_MODULE,
.name = MSGTYPE06_NAME,
.variant = MSGTYPE06_VARIANT_NORNG,
.rsa_modexpo = zcrypt_msgtype6_modexpo,
.rsa_modexpo_crt = zcrypt_msgtype6_modexpo_crt,
@ -1127,6 +1128,7 @@ static struct zcrypt_ops zcrypt_msgtype6_norng_ops = {
static struct zcrypt_ops zcrypt_msgtype6_ops = {
.owner = THIS_MODULE,
.name = MSGTYPE06_NAME,
.variant = MSGTYPE06_VARIANT_DEFAULT,
.rsa_modexpo = zcrypt_msgtype6_modexpo,
.rsa_modexpo_crt = zcrypt_msgtype6_modexpo_crt,
@ -1136,6 +1138,7 @@ static struct zcrypt_ops zcrypt_msgtype6_ops = {
static struct zcrypt_ops zcrypt_msgtype6_ep11_ops = {
.owner = THIS_MODULE,
.name = MSGTYPE06_NAME,
.variant = MSGTYPE06_VARIANT_EP11,
.rsa_modexpo = NULL,
.rsa_modexpo_crt = NULL,