AuxXxilium/linux_dsm_epyc7002
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Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6

Browse Source 
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (21 commits)
  [S390] dasd: fix race condition in resume code
  [S390] Add EX_TABLE for addressing exception in usercopy functions.
  [S390] 64-bit register support for 31-bit processes
  [S390] hibernate: Use correct place for CPU address in lowcore
  [S390] pm: ignore time spend in suspended state
  [S390] zcrypt: Improve some comments
  [S390] zcrypt: Fix sparse warning.
  [S390] perf_counter: fix vdso detection
  [S390] ftrace: drop nmi protection
  [S390] compat: fix truncate system call wrapper
  [S390] Provide arch specific mdelay implementation.
  [S390] Fix enabled udelay for short delays.
  [S390] cio: allow setting boxed devices offline
  [S390] cio: make not operational handling consistent
  [S390] cio: make disconnected handling consistent
  [S390] Fix memory leak in /proc/cio_ignore
  [S390] cio: channel path memory leak
  [S390] module: fix memory leak in s390 module loader
  [S390] Enable kmemleak on s390.
  [S390] 3270 console build fix
  ...
This commit is contained in:
Linus Torvalds 2009-10-11 11:34:50 -07:00
commit f144c78e52
28 changed files with 282 additions and 82 deletions
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7
arch/s390/include/asm/delay.h
View File

@ -14,10 +14,11 @@
#ifndef _S390_DELAY_H
#define _S390_DELAY_H
extern void __udelay(unsigned long usecs);
extern void udelay_simple(unsigned long usecs);
extern void __udelay(unsigned long long usecs);
extern void udelay_simple(unsigned long long usecs);
extern void __delay(unsigned long loops);
#define udelay(n) __udelay(n)
#define udelay(n) __udelay((unsigned long long) (n))
#define mdelay(n) __udelay((unsigned long long) (n) * 1000)
#endif /* defined(_S390_DELAY_H) */

12
arch/s390/include/asm/elf.h
View File

@ -92,6 +92,18 @@
/* Keep this the last entry. */
#define R_390_NUM 61
/* Bits present in AT_HWCAP. */
#define HWCAP_S390_ESAN3 1
#define HWCAP_S390_ZARCH 2
#define HWCAP_S390_STFLE 4
#define HWCAP_S390_MSA 8
#define HWCAP_S390_LDISP 16
#define HWCAP_S390_EIMM 32
#define HWCAP_S390_DFP 64
#define HWCAP_S390_HPAGE 128
#define HWCAP_S390_ETF3EH 256
#define HWCAP_S390_HIGH_GPRS 512
/*
* These are used to set parameters in the core dumps.
*/

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

@ -311,6 +311,10 @@ typedef struct
__u32 orig_gpr2;
} s390_compat_regs;
typedef struct
{
__u32 gprs_high[NUM_GPRS];
} s390_compat_regs_high;
#ifdef __KERNEL__

15
arch/s390/include/asm/ucontext.h
View File

@ -9,6 +9,21 @@
#ifndef _ASM_S390_UCONTEXT_H
#define _ASM_S390_UCONTEXT_H
#define UC_EXTENDED 0x00000001
#ifndef __s390x__
struct ucontext_extended {
unsigned long uc_flags;
struct ucontext *uc_link;
stack_t uc_stack;
_sigregs uc_mcontext;
unsigned long uc_sigmask[2];
unsigned long uc_gprs_high[16];
};
#endif
struct ucontext {
unsigned long uc_flags;
struct ucontext *uc_link;

35
arch/s390/kernel/compat_signal.c
View File

@ -39,6 +39,7 @@ typedef struct
struct sigcontext32 sc;
_sigregs32 sregs;
int signo;
__u32 gprs_high[NUM_GPRS];
__u8 retcode[S390_SYSCALL_SIZE];
} sigframe32;
@ -48,6 +49,7 @@ typedef struct
__u8 retcode[S390_SYSCALL_SIZE];
compat_siginfo_t info;
struct ucontext32 uc;
__u32 gprs_high[NUM_GPRS];
} rt_sigframe32;
int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
@ -344,6 +346,30 @@ static int restore_sigregs32(struct pt_regs *regs,_sigregs32 __user *sregs)
return 0;
}
static int save_sigregs_gprs_high(struct pt_regs *regs, __u32 __user *uregs)
{
__u32 gprs_high[NUM_GPRS];
int i;
for (i = 0; i < NUM_GPRS; i++)
gprs_high[i] = regs->gprs[i] >> 32;
return __copy_to_user(uregs, &gprs_high, sizeof(gprs_high));
}
static int restore_sigregs_gprs_high(struct pt_regs *regs, __u32 __user *uregs)
{
__u32 gprs_high[NUM_GPRS];
int err, i;
err = __copy_from_user(&gprs_high, uregs, sizeof(gprs_high));
if (err)
return err;
for (i = 0; i < NUM_GPRS; i++)
*(__u32 *)&regs->gprs[i] = gprs_high[i];
return 0;
}
asmlinkage long sys32_sigreturn(void)
{
struct pt_regs *regs = task_pt_regs(current);
@ -363,6 +389,8 @@ asmlinkage long sys32_sigreturn(void)
if (restore_sigregs32(regs, &frame->sregs))
goto badframe;
if (restore_sigregs_gprs_high(regs, frame->gprs_high))
goto badframe;
return regs->gprs[2];
@ -394,6 +422,8 @@ asmlinkage long sys32_rt_sigreturn(void)
if (restore_sigregs32(regs, &frame->uc.uc_mcontext))
goto badframe;
if (restore_sigregs_gprs_high(regs, frame->gprs_high))
goto badframe;
err = __get_user(ss_sp, &frame->uc.uc_stack.ss_sp);
st.ss_sp = compat_ptr(ss_sp);
@ -474,6 +504,8 @@ static int setup_frame32(int sig, struct k_sigaction *ka,
if (save_sigregs32(regs, &frame->sregs))
goto give_sigsegv;
if (save_sigregs_gprs_high(regs, frame->gprs_high))
goto give_sigsegv;
if (__put_user((unsigned long) &frame->sregs, &frame->sc.sregs))
goto give_sigsegv;
@ -529,13 +561,14 @@ static int setup_rt_frame32(int sig, struct k_sigaction *ka, siginfo_t *info,
goto give_sigsegv;
/* Create the ucontext. */
err |= __put_user(0, &frame->uc.uc_flags);
err |= __put_user(UC_EXTENDED, &frame->uc.uc_flags);
err |= __put_user(0, &frame->uc.uc_link);
err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
err |= __put_user(sas_ss_flags(regs->gprs[15]),
&frame->uc.uc_stack.ss_flags);
err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
err |= save_sigregs32(regs, &frame->uc.uc_mcontext);
err |= save_sigregs_gprs_high(regs, frame->gprs_high);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)
goto give_sigsegv;

2
arch/s390/kernel/compat_wrapper.S
View File

@ -409,7 +409,7 @@ sys32_munmap_wrapper:
.globl sys32_truncate_wrapper
sys32_truncate_wrapper:
llgtr %r2,%r2 # const char *
llgfr %r3,%r3 # unsigned long
lgfr %r3,%r3 # long
jg sys_truncate # branch to system call
.globl sys32_ftruncate_wrapper

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

@ -185,9 +185,6 @@ unsigned long prepare_ftrace_return(unsigned long ip, unsigned long parent)
{
struct ftrace_graph_ent trace;
/* Nmi's are currently unsupported. */
if (unlikely(in_nmi()))
goto out;
if (unlikely(atomic_read(&current->tracing_graph_pause)))
goto out;
if (ftrace_push_return_trace(parent, ip, &trace.depth, 0) == -EBUSY)

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

@ -55,6 +55,8 @@ void *module_alloc(unsigned long size)
/* Free memory returned from module_alloc */
void module_free(struct module *mod, void *module_region)
{
vfree(mod->arch.syminfo);
mod->arch.syminfo = NULL;
vfree(module_region);
}
@ -402,6 +404,7 @@ int module_finalize(const Elf_Ehdr *hdr,
struct module *me)
{
vfree(me->arch.syminfo);
me->arch.syminfo = NULL;
return module_bug_finalize(hdr, sechdrs, me);
}

70
arch/s390/kernel/ptrace.c
View File

@ -57,6 +57,7 @@
enum s390_regset {
REGSET_GENERAL,
REGSET_FP,
REGSET_GENERAL_EXTENDED,
};
static void
@ -879,6 +880,67 @@ static int s390_compat_regs_set(struct task_struct *target,
return rc;
}
static int s390_compat_regs_high_get(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf)
{
compat_ulong_t *gprs_high;
gprs_high = (compat_ulong_t *)
&task_pt_regs(target)->gprs[pos / sizeof(compat_ulong_t)];
if (kbuf) {
compat_ulong_t *k = kbuf;
while (count > 0) {
*k++ = *gprs_high;
gprs_high += 2;
count -= sizeof(*k);
}
} else {
compat_ulong_t __user *u = ubuf;
while (count > 0) {
if (__put_user(*gprs_high, u++))
return -EFAULT;
gprs_high += 2;
count -= sizeof(*u);
}
}
return 0;
}
static int s390_compat_regs_high_set(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
{
compat_ulong_t *gprs_high;
int rc = 0;
gprs_high = (compat_ulong_t *)
&task_pt_regs(target)->gprs[pos / sizeof(compat_ulong_t)];
if (kbuf) {
const compat_ulong_t *k = kbuf;
while (count > 0) {
*gprs_high = *k++;
*gprs_high += 2;
count -= sizeof(*k);
}
} else {
const compat_ulong_t __user *u = ubuf;
while (count > 0 && !rc) {
unsigned long word;
rc = __get_user(word, u++);
if (rc)
break;
*gprs_high = word;
*gprs_high += 2;
count -= sizeof(*u);
}
}
return rc;
}
static const struct user_regset s390_compat_regsets[] = {
[REGSET_GENERAL] = {
.core_note_type = NT_PRSTATUS,
@ -896,6 +958,14 @@ static const struct user_regset s390_compat_regsets[] = {
.get = s390_fpregs_get,
.set = s390_fpregs_set,
},
[REGSET_GENERAL_EXTENDED] = {
.core_note_type = NT_PRXSTATUS,
.n = sizeof(s390_compat_regs_high) / sizeof(compat_long_t),
.size = sizeof(compat_long_t),
.align = sizeof(compat_long_t),
.get = s390_compat_regs_high_get,
.set = s390_compat_regs_high_set,
},
};
static const struct user_regset_view user_s390_compat_view = {

15
arch/s390/kernel/setup.c
View File

@ -729,7 +729,7 @@ static void __init setup_hwcaps(void)
if ((facility_list & (1UL << (31 - 22)))
&& (facility_list & (1UL << (31 - 30))))
elf_hwcap |= 1UL << 8;
elf_hwcap |= HWCAP_S390_ETF3EH;
/*
* Check for additional facilities with store-facility-list-extended.
@ -748,11 +748,20 @@ static void __init setup_hwcaps(void)
__stfle(&facility_list_extended, 1) > 0) {
if ((facility_list_extended & (1ULL << (63 - 42)))
&& (facility_list_extended & (1ULL << (63 - 44))))
elf_hwcap |= 1UL << 6;
elf_hwcap |= HWCAP_S390_DFP;
}
/*
* Huge page support HWCAP_S390_HPAGE is bit 7.
*/
if (MACHINE_HAS_HPAGE)
elf_hwcap |= 1UL << 7;
elf_hwcap |= HWCAP_S390_HPAGE;
/*
* 64-bit register support for 31-bit processes
* HWCAP_S390_HIGH_GPRS is bit 9.
*/
elf_hwcap |= HWCAP_S390_HIGH_GPRS;
switch (S390_lowcore.cpu_id.machine) {
case 0x9672:

26
arch/s390/kernel/swsusp_asm64.S
View File

@ -43,7 +43,7 @@ swsusp_arch_suspend:
lghi %r1,0x1000
/* Save CPU address */
stap __LC_CPU_ADDRESS(%r1)
stap __LC_CPU_ADDRESS(%r0)
/* Store registers */
mvc 0x318(4,%r1),__SF_EMPTY(%r15) /* move prefix to lowcore */
@ -69,8 +69,21 @@ swsusp_arch_suspend:
stmg %r0,%r15,0x280(%r1) /* store general registers */
stpt 0x328(%r1) /* store timer */
stck __SF_EMPTY(%r15) /* store clock */
stckc 0x330(%r1) /* store clock comparator */
/* Update cputime accounting before going to sleep */
lg %r0,__LC_LAST_UPDATE_TIMER
slg %r0,0x328(%r1)
alg %r0,__LC_SYSTEM_TIMER
stg %r0,__LC_SYSTEM_TIMER
mvc __LC_LAST_UPDATE_TIMER(8),0x328(%r1)
lg %r0,__LC_LAST_UPDATE_CLOCK
slg %r0,__SF_EMPTY(%r15)
alg %r0,__LC_STEAL_TIMER
stg %r0,__LC_STEAL_TIMER
mvc __LC_LAST_UPDATE_CLOCK(8),__SF_EMPTY(%r15)
/* Activate DAT */
stosm __SF_EMPTY(%r15),0x04
@ -159,8 +172,7 @@ pgm_check_entry:
larl %r1,.Lresume_cpu /* Resume CPU address: r2 */
stap 0(%r1)
llgh %r2,0(%r1)
lghi %r3,0x1000
llgh %r1,__LC_CPU_ADDRESS(%r3) /* Suspend CPU address: r1 */
llgh %r1,__LC_CPU_ADDRESS(%r0) /* Suspend CPU address: r1 */
cgr %r1,%r2
je restore_registers /* r1 = r2 -> nothing to do */
larl %r4,.Lrestart_suspend_psw /* Set new restart PSW */
@ -200,8 +212,11 @@ restart_suspend:
restore_registers:
/* Restore registers */
lghi %r13,0x1000 /* %r1 = pointer to save arae */
lghi %r13,0x1000 /* %r1 = pointer to save area */
/* Ignore time spent in suspended state. */
llgf %r1,0x318(%r13)
stck __LC_LAST_UPDATE_CLOCK(%r1)
spt 0x328(%r13) /* reprogram timer */
//sckc 0x330(%r13) /* set clock comparator */
@ -229,9 +244,6 @@ restore_registers:
/* Load old stack */
lg %r15,0x2f8(%r13)
/* Pointer to save area */
lghi %r13,0x1000
/* Restore prefix register */
spx 0x318(%r13)

16
arch/s390/kernel/vdso.c
View File

@ -246,6 +246,13 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
goto out_up;
}
/*
* Put vDSO base into mm struct. We need to do this before calling
* install_special_mapping or the perf counter mmap tracking code
* will fail to recognise it as a vDSO (since arch_vma_name fails).
*/
current->mm->context.vdso_base = vdso_base;
/*
* our vma flags don't have VM_WRITE so by default, the process
* isn't allowed to write those pages.
@ -267,14 +274,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
VM_ALWAYSDUMP,
vdso_pagelist);
if (rc)
goto out_up;
/* Put vDSO base into mm struct */
current->mm->context.vdso_base = vdso_base;
up_write(&mm->mmap_sem);
return 0;
current->mm->context.vdso_base = 0;
out_up:
up_write(&mm->mmap_sem);
return rc;

1
arch/s390/kernel/vmlinux.lds.S
View File

@ -51,6 +51,7 @@ SECTIONS
. = ALIGN(PAGE_SIZE);
_eshared = .; /* End of shareable data */
_sdata = .; /* Start of data section */
EXCEPTION_TABLE(16) :data

27
arch/s390/lib/delay.c
View File

@ -25,13 +25,13 @@ void __delay(unsigned long loops)
asm volatile("0: brct %0,0b" : : "d" ((loops/2) + 1));
}
static void __udelay_disabled(unsigned long usecs)
static void __udelay_disabled(unsigned long long usecs)
{
unsigned long mask, cr0, cr0_saved;
u64 clock_saved;
clock_saved = local_tick_disable();
set_clock_comparator(get_clock() + ((u64) usecs << 12));
set_clock_comparator(get_clock() + (usecs << 12));
__ctl_store(cr0_saved, 0, 0);
cr0 = (cr0_saved & 0xffff00e0) | 0x00000800;
__ctl_load(cr0 , 0, 0);
@ -46,20 +46,25 @@ static void __udelay_disabled(unsigned long usecs)
set_clock_comparator(S390_lowcore.clock_comparator);
}
static void __udelay_enabled(unsigned long usecs)
static void __udelay_enabled(unsigned long long usecs)
{
unsigned long mask;
u64 end, time;
u64 clock_saved;
u64 end;
mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT | PSW_MASK_IO;
end = get_clock() + ((u64) usecs << 12);
end = get_clock() + (usecs << 12);
do {
time = end < S390_lowcore.clock_comparator ?
end : S390_lowcore.clock_comparator;
set_clock_comparator(time);
clock_saved = 0;
if (end < S390_lowcore.clock_comparator) {
clock_saved = local_tick_disable();
set_clock_comparator(end);
}
trace_hardirqs_on();
__load_psw_mask(mask);
local_irq_disable();
if (clock_saved)
local_tick_enable(clock_saved);
} while (get_clock() < end);
set_clock_comparator(S390_lowcore.clock_comparator);
}
@ -67,7 +72,7 @@ static void __udelay_enabled(unsigned long usecs)
/*
* Waits for 'usecs' microseconds using the TOD clock comparator.
*/
void __udelay(unsigned long usecs)
void __udelay(unsigned long long usecs)
{
unsigned long flags;
@ -101,11 +106,11 @@ EXPORT_SYMBOL(__udelay);
* Simple udelay variant. To be used on startup and reboot
* when the interrupt handler isn't working.
*/
void udelay_simple(unsigned long usecs)
void udelay_simple(unsigned long long usecs)
{
u64 end;
end = get_clock() + ((u64) usecs << 12);
end = get_clock() + (usecs << 12);
while (get_clock() < end)
cpu_relax();
}

12
arch/s390/lib/uaccess_mvcos.c
View File

@ -36,7 +36,7 @@ static size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
tmp1 = -4096UL;
asm volatile(
"0: .insn ss,0xc80000000000,0(%0,%2),0(%1),0\n"
" jz 7f\n"
"9: jz 7f\n"
"1:"ALR" %0,%3\n"
" "SLR" %1,%3\n"
" "SLR" %2,%3\n"
@ -47,7 +47,7 @@ static size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
" "CLR" %0,%4\n" /* copy crosses next page boundary? */
" jnh 4f\n"
"3: .insn ss,0xc80000000000,0(%4,%2),0(%1),0\n"
" "SLR" %0,%4\n"
"10:"SLR" %0,%4\n"
" "ALR" %2,%4\n"
"4:"LHI" %4,-1\n"
" "ALR" %4,%0\n" /* copy remaining size, subtract 1 */
@ -61,7 +61,7 @@ static size_t copy_from_user_mvcos(size_t size, const void __user *ptr, void *x)
" j 8f\n"
"7:"SLR" %0,%0\n"
"8: \n"
EX_TABLE(0b,2b) EX_TABLE(3b,4b)
EX_TABLE(0b,2b) EX_TABLE(3b,4b) EX_TABLE(9b,2b) EX_TABLE(10b,4b)
: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
: "d" (reg0) : "cc", "memory");
return size;
@ -82,7 +82,7 @@ static size_t copy_to_user_mvcos(size_t size, void __user *ptr, const void *x)
tmp1 = -4096UL;
asm volatile(
"0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
" jz 4f\n"
"6: jz 4f\n"
"1:"ALR" %0,%3\n"
" "SLR" %1,%3\n"
" "SLR" %2,%3\n"
@ -93,11 +93,11 @@ static size_t copy_to_user_mvcos(size_t size, void __user *ptr, const void *x)
" "CLR" %0,%4\n" /* copy crosses next page boundary? */
" jnh 5f\n"
"3: .insn ss,0xc80000000000,0(%4,%1),0(%2),0\n"
" "SLR" %0,%4\n"
"7:"SLR" %0,%4\n"
" j 5f\n"
"4:"SLR" %0,%0\n"
"5: \n"
EX_TABLE(0b,2b) EX_TABLE(3b,5b)
EX_TABLE(0b,2b) EX_TABLE(3b,5b) EX_TABLE(6b,2b) EX_TABLE(7b,5b)
: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
: "d" (reg0) : "cc", "memory");
return size;

14
arch/s390/lib/uaccess_std.c
View File

@ -36,12 +36,12 @@ size_t copy_from_user_std(size_t size, const void __user *ptr, void *x)
tmp1 = -256UL;
asm volatile(
"0: mvcp 0(%0,%2),0(%1),%3\n"
" jz 8f\n"
"10:jz 8f\n"
"1:"ALR" %0,%3\n"
" la %1,256(%1)\n"
" la %2,256(%2)\n"
"2: mvcp 0(%0,%2),0(%1),%3\n"
" jnz 1b\n"
"11:jnz 1b\n"
" j 8f\n"
"3: la %4,255(%1)\n" /* %4 = ptr + 255 */
" "LHI" %3,-4096\n"
@ -50,7 +50,7 @@ size_t copy_from_user_std(size_t size, const void __user *ptr, void *x)
" "CLR" %0,%4\n" /* copy crosses next page boundary? */
" jnh 5f\n"
"4: mvcp 0(%4,%2),0(%1),%3\n"
" "SLR" %0,%4\n"
"12:"SLR" %0,%4\n"
" "ALR" %2,%4\n"
"5:"LHI" %4,-1\n"
" "ALR" %4,%0\n" /* copy remaining size, subtract 1 */
@ -65,6 +65,7 @@ size_t copy_from_user_std(size_t size, const void __user *ptr, void *x)
"8:"SLR" %0,%0\n"
"9: \n"
EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,5b)
EX_TABLE(10b,3b) EX_TABLE(11b,3b) EX_TABLE(12b,5b)
: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
: : "cc", "memory");
return size;
@ -85,12 +86,12 @@ size_t copy_to_user_std(size_t size, void __user *ptr, const void *x)
tmp1 = -256UL;
asm volatile(
"0: mvcs 0(%0,%1),0(%2),%3\n"
" jz 5f\n"
"7: jz 5f\n"
"1:"ALR" %0,%3\n"
" la %1,256(%1)\n"
" la %2,256(%2)\n"
"2: mvcs 0(%0,%1),0(%2),%3\n"
" jnz 1b\n"
"8: jnz 1b\n"
" j 5f\n"
"3: la %4,255(%1)\n" /* %4 = ptr + 255 */
" "LHI" %3,-4096\n"
@ -99,11 +100,12 @@ size_t copy_to_user_std(size_t size, void __user *ptr, const void *x)
" "CLR" %0,%4\n" /* copy crosses next page boundary? */
" jnh 6f\n"
"4: mvcs 0(%4,%1),0(%2),%3\n"
" "SLR" %0,%4\n"
"9:"SLR" %0,%4\n"
" j 6f\n"
"5:"SLR" %0,%0\n"
"6: \n"
EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,6b)
EX_TABLE(7b,3b) EX_TABLE(8b,3b) EX_TABLE(9b,6b)
: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
: : "cc", "memory");
return size;

10
arch/s390/mm/pgtable.c
View File

@ -279,7 +279,10 @@ int s390_enable_sie(void)
/* lets check if we are allowed to replace the mm */
task_lock(tsk);
if (!tsk->mm || atomic_read(&tsk->mm->mm_users) > 1 ||
tsk->mm != tsk->active_mm || !hlist_empty(&tsk->mm->ioctx_list)) {
#ifdef CONFIG_AIO
!hlist_empty(&tsk->mm->ioctx_list) ||
#endif
tsk->mm != tsk->active_mm) {
task_unlock(tsk);
return -EINVAL;
}
@ -295,7 +298,10 @@ int s390_enable_sie(void)
/* Now lets check again if something happened */
task_lock(tsk);
if (!tsk->mm || atomic_read(&tsk->mm->mm_users) > 1 ||
tsk->mm != tsk->active_mm || !hlist_empty(&tsk->mm->ioctx_list)) {
#ifdef CONFIG_AIO
!hlist_empty(&tsk->mm->ioctx_list) ||
#endif
tsk->mm != tsk->active_mm) {
mmput(mm);
task_unlock(tsk);
return -EINVAL;

5
drivers/s390/block/dasd.c
View File

@ -2508,8 +2508,6 @@ int dasd_generic_restore_device(struct ccw_device *cdev)
device->stopped &= ~DASD_UNRESUMED_PM;
dasd_schedule_device_bh(device);
if (device->block)
dasd_schedule_block_bh(device->block);
if (device->discipline->restore)
rc = device->discipline->restore(device);
@ -2520,6 +2518,9 @@ int dasd_generic_restore_device(struct ccw_device *cdev)
*/
device->stopped |= DASD_UNRESUMED_PM;
if (device->block)
dasd_schedule_block_bh(device->block);
dasd_put_device(device);
return 0;
}

9
drivers/s390/block/dasd_eckd.c
View File

@ -2338,6 +2338,8 @@ static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev,
/* Calculate number of blocks/records per track. */
blksize = block->bp_block;
blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize);
if (blk_per_trk == 0)
return ERR_PTR(-EINVAL);
/* Calculate record id of first and last block. */
first_rec = first_trk = blk_rq_pos(req) >> block->s2b_shift;
first_offs = sector_div(first_trk, blk_per_trk);
@ -3211,6 +3213,7 @@ int dasd_eckd_pm_freeze(struct dasd_device *device)
int dasd_eckd_restore_device(struct dasd_device *device)
{
struct dasd_eckd_private *private;
struct dasd_eckd_characteristics temp_rdc_data;
int is_known, rc;
struct dasd_uid temp_uid;
@ -3245,15 +3248,17 @@ int dasd_eckd_restore_device(struct dasd_device *device)
dasd_eckd_read_features(device);
/* Read Device Characteristics */
memset(&private->rdc_data, 0, sizeof(private->rdc_data));
rc = dasd_generic_read_dev_chars(device, DASD_ECKD_MAGIC,
&private->rdc_data, 64);
&temp_rdc_data, 64);
if (rc) {
DBF_EVENT(DBF_WARNING,
"Read device characteristics failed, rc=%d for "
"device: %s", rc, dev_name(&device->cdev->dev));
goto out_err;
}
spin_lock(get_ccwdev_lock(device->cdev));
memcpy(&private->rdc_data, &temp_rdc_data, sizeof(temp_rdc_data));
spin_unlock(get_ccwdev_lock(device->cdev));
/* add device to alias management */
dasd_alias_add_device(device);

2
drivers/s390/char/raw3270.c
View File

@ -1361,11 +1361,13 @@ static int raw3270_pm_start(struct ccw_device *cdev)
void raw3270_pm_unfreeze(struct raw3270_view *view)
{
#ifdef CONFIG_TN3270_CONSOLE
struct raw3270 *rp;
rp = view->dev;
if (rp && test_bit(RAW3270_FLAGS_FROZEN, &rp->flags))
ccw_device_force_console();
#endif
}
static struct ccw_device_id raw3270_id[] = {

13
drivers/s390/cio/blacklist.c
View File

@ -265,13 +265,11 @@ struct ccwdev_iter {
static void *
cio_ignore_proc_seq_start(struct seq_file *s, loff_t *offset)
{
struct ccwdev_iter *iter;
struct ccwdev_iter *iter = s->private;
if (*offset >= (__MAX_SUBCHANNEL + 1) * (__MAX_SSID + 1))
return NULL;
iter = kzalloc(sizeof(struct ccwdev_iter), GFP_KERNEL);
if (!iter)
return ERR_PTR(-ENOMEM);
memset(iter, 0, sizeof(*iter));
iter->ssid = *offset / (__MAX_SUBCHANNEL + 1);
iter->devno = *offset % (__MAX_SUBCHANNEL + 1);
return iter;
@ -280,8 +278,6 @@ cio_ignore_proc_seq_start(struct seq_file *s, loff_t *offset)
static void
cio_ignore_proc_seq_stop(struct seq_file *s, void *it)
{
if (!IS_ERR(it))
kfree(it);
}
static void *
@ -378,14 +374,15 @@ static const struct seq_operations cio_ignore_proc_seq_ops = {
static int
cio_ignore_proc_open(struct inode *inode, struct file *file)
{
return seq_open(file, &cio_ignore_proc_seq_ops);
return seq_open_private(file, &cio_ignore_proc_seq_ops,
sizeof(struct ccwdev_iter));
}
static const struct file_operations cio_ignore_proc_fops = {
.open = cio_ignore_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
.release = seq_release_private,
.write = cio_ignore_write,
};

2
drivers/s390/cio/chp.c
View File

@ -393,7 +393,6 @@ int chp_new(struct chp_id chpid)
chp->state = 1;
chp->dev.parent = &channel_subsystems[chpid.cssid]->device;
chp->dev.release = chp_release;
dev_set_name(&chp->dev, "chp%x.%02x", chpid.cssid, chpid.id);
/* Obtain channel path description and fill it in. */
ret = chsc_determine_base_channel_path_desc(chpid, &chp->desc);
@ -411,6 +410,7 @@ int chp_new(struct chp_id chpid)
} else {
chp->cmg = -1;
}
dev_set_name(&chp->dev, "chp%x.%02x", chpid.cssid, chpid.id);
/* make it known to the system */
ret = device_register(&chp->dev);

4
drivers/s390/cio/device.c
View File

@ -1609,7 +1609,7 @@ int ccw_purge_blacklisted(void)
return 0;
}
static void device_set_disconnected(struct ccw_device *cdev)
void ccw_device_set_disconnected(struct ccw_device *cdev)
{
if (!cdev)
return;
@ -1705,7 +1705,7 @@ static int io_subchannel_sch_event(struct subchannel *sch, int slow)
ccw_device_trigger_reprobe(cdev);
break;
case DISC:
device_set_disconnected(cdev);
ccw_device_set_disconnected(cdev);
break;
default:
break;

1
drivers/s390/cio/device.h
View File

@ -125,6 +125,7 @@ int ccw_device_stlck(struct ccw_device *);
void ccw_device_trigger_reprobe(struct ccw_device *);
void ccw_device_kill_io(struct ccw_device *);
int ccw_device_notify(struct ccw_device *, int);
void ccw_device_set_disconnected(struct ccw_device *cdev);
void ccw_device_set_notoper(struct ccw_device *cdev);
/* qdio needs this. */

35
drivers/s390/cio/device_fsm.c
View File

@ -387,19 +387,35 @@ ccw_device_done(struct ccw_device *cdev, int state)
cdev->private->state = state;
if (state == DEV_STATE_BOXED) {
switch (state) {
case DEV_STATE_BOXED:
CIO_MSG_EVENT(0, "Boxed device %04x on subchannel %04x\n",
cdev->private->dev_id.devno, sch->schid.sch_no);
if (cdev->online && !ccw_device_notify(cdev, CIO_BOXED))
ccw_device_schedule_sch_unregister(cdev);
cdev->private->flags.donotify = 0;
}
if (state == DEV_STATE_NOT_OPER) {
break;
case DEV_STATE_NOT_OPER:
CIO_MSG_EVENT(0, "Device %04x gone on subchannel %04x\n",
cdev->private->dev_id.devno, sch->schid.sch_no);
if (!ccw_device_notify(cdev, CIO_GONE))
ccw_device_schedule_sch_unregister(cdev);
else
ccw_device_set_disconnected(cdev);
cdev->private->flags.donotify = 0;
break;
case DEV_STATE_DISCONNECTED:
CIO_MSG_EVENT(0, "Disconnected device %04x on subchannel "
"%04x\n", cdev->private->dev_id.devno,
sch->schid.sch_no);
if (!ccw_device_notify(cdev, CIO_NO_PATH))
ccw_device_schedule_sch_unregister(cdev);
else
ccw_device_set_disconnected(cdev);
cdev->private->flags.donotify = 0;
break;
default:
break;
}
if (cdev->private->flags.donotify) {
@ -671,6 +687,10 @@ ccw_device_offline(struct ccw_device *cdev)
ccw_device_done(cdev, DEV_STATE_NOT_OPER);
return 0;
}
if (cdev->private->state == DEV_STATE_BOXED) {
ccw_device_done(cdev, DEV_STATE_BOXED);
return 0;
}
if (ccw_device_is_orphan(cdev)) {
ccw_device_done(cdev, DEV_STATE_OFFLINE);
return 0;
@ -730,11 +750,10 @@ ccw_device_recog_notoper(struct ccw_device *cdev, enum dev_event dev_event)
static void ccw_device_generic_notoper(struct ccw_device *cdev,
enum dev_event dev_event)
{
struct subchannel *sch;
ccw_device_set_notoper(cdev);
sch = to_subchannel(cdev->dev.parent);
css_schedule_eval(sch->schid);
if (!ccw_device_notify(cdev, CIO_GONE))
ccw_device_schedule_sch_unregister(cdev);
else
ccw_device_set_disconnected(cdev);
}
/*

13
drivers/s390/crypto/zcrypt_pcixcc.c
View File

@ -361,7 +361,7 @@ static void rng_type6CPRB_msgX(struct ap_device *ap_dev,
.ToCardLen1 = sizeof *msg - sizeof(msg->hdr),
.FromCardLen1 = sizeof *msg - sizeof(msg->hdr),
};
static struct CPRBX static_cprbx = {
static struct CPRBX local_cprbx = {
.cprb_len = 0x00dc,
.cprb_ver_id = 0x02,
.func_id = {0x54, 0x32},
@ -372,7 +372,7 @@ static void rng_type6CPRB_msgX(struct ap_device *ap_dev,
msg->hdr = static_type6_hdrX;
msg->hdr.FromCardLen2 = random_number_length,
msg->cprbx = static_cprbx;
msg->cprbx = local_cprbx;
msg->cprbx.rpl_datal = random_number_length,
msg->cprbx.domain = AP_QID_QUEUE(ap_dev->qid);
memcpy(msg->function_code, msg->hdr.function_code, 0x02);
@ -561,7 +561,8 @@ static int convert_response_ica(struct zcrypt_device *zdev,
if (msg->cprbx.cprb_ver_id == 0x02)
return convert_type86_ica(zdev, reply,
outputdata, outputdatalength);
/* no break, incorrect cprb version is an unknown response */
/* Fall through, no break, incorrect cprb version is an unknown
* response */
default: /* Unknown response type, this should NEVER EVER happen */
zdev->online = 0;
return -EAGAIN; /* repeat the request on a different device. */
@ -587,7 +588,8 @@ static int convert_response_xcrb(struct zcrypt_device *zdev,
}
if (msg->cprbx.cprb_ver_id == 0x02)
return convert_type86_xcrb(zdev, reply, xcRB);
/* no break, incorrect cprb version is an unknown response */
/* Fall through, no break, incorrect cprb version is an unknown
* response */
default: /* Unknown response type, this should NEVER EVER happen */
xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
zdev->online = 0;
@ -610,7 +612,8 @@ static int convert_response_rng(struct zcrypt_device *zdev,
return -EINVAL;
if (msg->cprbx.cprb_ver_id == 0x02)
return convert_type86_rng(zdev, reply, data);
/* no break, incorrect cprb version is an unknown response */
/* Fall through, no break, incorrect cprb version is an unknown
* response */
default: /* Unknown response type, this should NEVER EVER happen */
zdev->online = 0;
return -EAGAIN; /* repeat the request on a different device. */

1
include/linux/elf.h
View File

@ -361,6 +361,7 @@ typedef struct elf64_shdr {
#define NT_PPC_VSX 0x102 /* PowerPC VSX registers */
#define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */
#define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */
#define NT_PRXSTATUS 0x300 /* s390 upper register halves */
/* Note header in a PT_NOTE section */

7
lib/Kconfig.debug
View File

@ -346,8 +346,9 @@ config SLUB_STATS
config DEBUG_KMEMLEAK
bool "Kernel memory leak detector"
depends on DEBUG_KERNEL && EXPERIMENTAL && (X86 || ARM || PPC) && \
!MEMORY_HOTPLUG
depends on DEBUG_KERNEL && EXPERIMENTAL && !MEMORY_HOTPLUG && \
(X86 || ARM || PPC || S390)
select DEBUG_FS if SYSFS
select STACKTRACE if STACKTRACE_SUPPORT
select KALLSYMS
@ -370,7 +371,7 @@ config DEBUG_KMEMLEAK
config DEBUG_KMEMLEAK_EARLY_LOG_SIZE
int "Maximum kmemleak early log entries"
depends on DEBUG_KMEMLEAK
range 200 2000
range 200 40000
default 400
help
Kmemleak must track all the memory allocations to avoid