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| author | Gustavo Padovan <gustavo.padovan@collabora.co.uk> | 2013-09-27 11:56:14 -0300 |
|---|---|---|
| committer | Gustavo Padovan <gustavo.padovan@collabora.co.uk> | 2013-09-27 11:56:14 -0300 |
| commit | 1025c04cecd19882e28f16c4004034b475c372c5 (patch) | |
| tree | 2b7402887e86d54bff5a123228c9059eae5e32bd /arch/powerpc/kernel/signal_32.c | |
| parent | 4375f1037d52602413142e290608d0d84671ad36 (diff) | |
| parent | 5bcecf325378218a8e248bb6bcae96ec7362f8ef (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
Conflicts:
net/bluetooth/hci_core.c
Diffstat (limited to 'arch/powerpc/kernel/signal_32.c')
| -rw-r--r-- | arch/powerpc/kernel/signal_32.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c index 0f83122e667..bebdf1a1a54 100644 --- a/arch/powerpc/kernel/signal_32.c +++ b/arch/powerpc/kernel/signal_32.c @@ -436,7 +436,10 @@ static int save_user_regs(struct pt_regs *regs, struct mcontext __user *frame, * use altivec. Since VSCR only contains 32 bits saved in the least * significant bits of a vector, we "cheat" and stuff VRSAVE in the * most significant bits of that same vector. --BenH + * Note that the current VRSAVE value is in the SPR at this point. */ + if (cpu_has_feature(CPU_FTR_ALTIVEC)) + current->thread.vrsave = mfspr(SPRN_VRSAVE); if (__put_user(current->thread.vrsave, (u32 __user *)&frame->mc_vregs[32])) return 1; #endif /* CONFIG_ALTIVEC */ @@ -557,6 +560,8 @@ static int save_tm_user_regs(struct pt_regs *regs, * significant bits of a vector, we "cheat" and stuff VRSAVE in the * most significant bits of that same vector. --BenH */ + if (cpu_has_feature(CPU_FTR_ALTIVEC)) + current->thread.vrsave = mfspr(SPRN_VRSAVE); if (__put_user(current->thread.vrsave, (u32 __user *)&frame->mc_vregs[32])) return 1; @@ -696,6 +701,8 @@ static long restore_user_regs(struct pt_regs *regs, /* Always get VRSAVE back */ if (__get_user(current->thread.vrsave, (u32 __user *)&sr->mc_vregs[32])) return 1; + if (cpu_has_feature(CPU_FTR_ALTIVEC)) + mtspr(SPRN_VRSAVE, current->thread.vrsave); #endif /* CONFIG_ALTIVEC */ if (copy_fpr_from_user(current, &sr->mc_fregs)) return 1; @@ -809,6 +816,8 @@ static long restore_tm_user_regs(struct pt_regs *regs, __get_user(current->thread.transact_vrsave, (u32 __user *)&tm_sr->mc_vregs[32])) return 1; + if (cpu_has_feature(CPU_FTR_ALTIVEC)) + mtspr(SPRN_VRSAVE, current->thread.vrsave); #endif /* CONFIG_ALTIVEC */ regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1); |