diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2013-10-16 14:17:29 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-10-24 17:17:12 +0200 |
| commit | f26946d7ecad0afdd85e6ae56663d0fe26676b34 (patch) | |
| tree | ff4bb03205420d7600d9e2b35b2c5d2e38e716a7 /arch/s390 | |
| parent | s390: fix handling of runtime instrumentation psw bit (diff) | |
| download | linux-f26946d7ecad0afdd85e6ae56663d0fe26676b34.tar.xz linux-f26946d7ecad0afdd85e6ae56663d0fe26676b34.zip | |
s390/compat: make psw32_user_bits a constant value again
Make psw32_user_bits a constant value again.
This is a leftover of the code which allowed to run the kernel either
in primary or home space which got removed with 9a905662 "s390/uaccess:
always run the kernel in home space".
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/compat.h | 4 | ||||
| -rw-r--r-- | arch/s390/kernel/compat_linux.c | 4 | ||||
| -rw-r--r-- | arch/s390/kernel/compat_signal.c | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/ptrace.c | 4 |
4 files changed, 6 insertions, 8 deletions
diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h index 7604cabf02c0..4bf9da03591e 100644 --- a/arch/s390/include/asm/compat.h +++ b/arch/s390/include/asm/compat.h @@ -36,7 +36,9 @@ #define PSW32_ASC_SECONDARY 0x00008000UL #define PSW32_ASC_HOME 0x0000C000UL -extern u32 psw32_user_bits; +#define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \ + PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \ + PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | PSW32_ASC_HOME) #define COMPAT_USER_HZ 100 #define COMPAT_UTS_MACHINE "s390\0\0\0\0" diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c index 1f1b8c70ab97..e030d2bdec1b 100644 --- a/arch/s390/kernel/compat_linux.c +++ b/arch/s390/kernel/compat_linux.c @@ -58,10 +58,6 @@ #include "compat_linux.h" -u32 psw32_user_bits = PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | - PSW32_DEFAULT_KEY | PSW32_MASK_BASE | PSW32_MASK_MCHECK | - PSW32_MASK_PSTATE | PSW32_ASC_HOME; - /* For this source file, we want overflow handling. */ #undef high2lowuid diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index 8764c88a84fe..5a3ab5c191fd 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -158,7 +158,7 @@ static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs) user_sregs.regs.psw.mask = (__u32)(regs->psw.mask >> 32); user_sregs.regs.psw.mask &= PSW32_MASK_USER | PSW32_MASK_RI; - user_sregs.regs.psw.mask |= psw32_user_bits; + user_sregs.regs.psw.mask |= PSW32_USER_BITS; user_sregs.regs.psw.addr = (__u32) regs->psw.addr | (__u32)(regs->psw.mask & PSW_MASK_BA); for (i = 0; i < NUM_GPRS; i++) diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 1d1f9c30c5fa..e65c91c591e8 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -563,7 +563,7 @@ static u32 __peek_user_compat(struct task_struct *child, addr_t addr) /* Fake a 31 bit psw mask. */ tmp = (__u32)(regs->psw.mask >> 32); tmp &= PSW32_MASK_USER | PSW32_MASK_RI; - tmp |= psw32_user_bits; + tmp |= PSW32_USER_BITS; } else if (addr == (addr_t) &dummy32->regs.psw.addr) { /* Fake a 31 bit psw address. */ tmp = (__u32) regs->psw.addr | @@ -664,7 +664,7 @@ static int __poke_user_compat(struct task_struct *child, mask |= is_ri_task(child) ? PSW32_MASK_RI : 0; /* Build a 64 bit psw mask from 31 bit mask. */ - if ((tmp & ~mask) != psw32_user_bits) + if ((tmp & ~mask) != PSW32_USER_BITS) /* Invalid psw mask. */ return -EINVAL; regs->psw.mask = (regs->psw.mask & ~PSW_MASK_USER) | |