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>
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5ebf250dab
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@ -36,7 +36,9 @@
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#define PSW32_ASC_SECONDARY 0x00008000UL
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#define PSW32_ASC_HOME 0x0000C000UL
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extern u32 psw32_user_bits;
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#define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
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PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
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PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | PSW32_ASC_HOME)
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#define COMPAT_USER_HZ 100
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#define COMPAT_UTS_MACHINE "s390\0\0\0\0"
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@ -58,10 +58,6 @@
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#include "compat_linux.h"
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u32 psw32_user_bits = PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT |
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PSW32_DEFAULT_KEY | PSW32_MASK_BASE | PSW32_MASK_MCHECK |
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PSW32_MASK_PSTATE | PSW32_ASC_HOME;
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/* For this source file, we want overflow handling. */
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#undef high2lowuid
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@ -158,7 +158,7 @@ static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs)
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user_sregs.regs.psw.mask = (__u32)(regs->psw.mask >> 32);
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user_sregs.regs.psw.mask &= PSW32_MASK_USER | PSW32_MASK_RI;
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user_sregs.regs.psw.mask |= psw32_user_bits;
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user_sregs.regs.psw.mask |= PSW32_USER_BITS;
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user_sregs.regs.psw.addr = (__u32) regs->psw.addr |
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(__u32)(regs->psw.mask & PSW_MASK_BA);
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for (i = 0; i < NUM_GPRS; i++)
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@ -563,7 +563,7 @@ static u32 __peek_user_compat(struct task_struct *child, addr_t addr)
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/* Fake a 31 bit psw mask. */
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tmp = (__u32)(regs->psw.mask >> 32);
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tmp &= PSW32_MASK_USER | PSW32_MASK_RI;
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tmp |= psw32_user_bits;
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tmp |= PSW32_USER_BITS;
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} else if (addr == (addr_t) &dummy32->regs.psw.addr) {
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/* Fake a 31 bit psw address. */
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tmp = (__u32) regs->psw.addr |
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@ -664,7 +664,7 @@ static int __poke_user_compat(struct task_struct *child,
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mask |= is_ri_task(child) ? PSW32_MASK_RI : 0;
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/* Build a 64 bit psw mask from 31 bit mask. */
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if ((tmp & ~mask) != psw32_user_bits)
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if ((tmp & ~mask) != PSW32_USER_BITS)
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/* Invalid psw mask. */
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return -EINVAL;
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regs->psw.mask = (regs->psw.mask & ~PSW_MASK_USER) |
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