Commit-ID: 8dcea8db793150ba7d56d56f0a397260db490abe Gitweb: http://git.kernel.org/tip/8dcea8db793150ba7d56d56f0a397260db490abe Author: Ingo Molnar <mingo@xxxxxxxxxx> AuthorDate: Fri, 24 Apr 2015 10:11:24 +0200 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Tue, 19 May 2015 15:47:34 +0200 x86/fpu: Clean up regset functions Clean up various regset handlers: use the 'fpu' pointer which is available in most cases. Reviewed-by: Borislav Petkov <bp@xxxxxxxxx> Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx> Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx> Cc: H. Peter Anvin <hpa@xxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Oleg Nesterov <oleg@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- arch/x86/kernel/fpu/core.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 8ea9ce0..07c8a44 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -438,7 +438,7 @@ int xfpregs_get(struct task_struct *target, const struct user_regset *regset, sanitize_i387_state(target); return user_regset_copyout(&pos, &count, &kbuf, &ubuf, - &target->thread.fpu.state->fxsave, 0, -1); + &fpu->state->fxsave, 0, -1); } int xfpregs_set(struct task_struct *target, const struct user_regset *regset, @@ -458,19 +458,19 @@ int xfpregs_set(struct task_struct *target, const struct user_regset *regset, sanitize_i387_state(target); ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - &target->thread.fpu.state->fxsave, 0, -1); + &fpu->state->fxsave, 0, -1); /* * mxcsr reserved bits must be masked to zero for security reasons. */ - target->thread.fpu.state->fxsave.mxcsr &= mxcsr_feature_mask; + fpu->state->fxsave.mxcsr &= mxcsr_feature_mask; /* * update the header bits in the xsave header, indicating the * presence of FP and SSE state. */ if (cpu_has_xsave) - target->thread.fpu.state->xsave.xsave_hdr.xstate_bv |= XSTATE_FPSSE; + fpu->state->xsave.xsave_hdr.xstate_bv |= XSTATE_FPSSE; return ret; } @@ -490,7 +490,7 @@ int xstateregs_get(struct task_struct *target, const struct user_regset *regset, if (ret) return ret; - xsave = &target->thread.fpu.state->xsave; + xsave = &fpu->state->xsave; /* * Copy the 48bytes defined by the software first into the xstate @@ -521,7 +521,7 @@ int xstateregs_set(struct task_struct *target, const struct user_regset *regset, if (ret) return ret; - xsave = &target->thread.fpu.state->xsave; + xsave = &fpu->state->xsave; ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, xsave, 0, -1); /* @@ -533,6 +533,7 @@ int xstateregs_set(struct task_struct *target, const struct user_regset *regset, * These bits must be zero. */ memset(&xsave->xsave_hdr.reserved, 0, 48); + return ret; } @@ -690,7 +691,7 @@ int fpregs_get(struct task_struct *target, const struct user_regset *regset, if (!cpu_has_fxsr) return user_regset_copyout(&pos, &count, &kbuf, &ubuf, - &target->thread.fpu.state->fsave, 0, + &fpu->state->fsave, 0, -1); sanitize_i387_state(target); @@ -724,7 +725,7 @@ int fpregs_set(struct task_struct *target, const struct user_regset *regset, if (!cpu_has_fxsr) return user_regset_copyin(&pos, &count, &kbuf, &ubuf, - &target->thread.fpu.state->fsave, 0, + &fpu->state->fsave, 0, -1); if (pos > 0 || count < sizeof(env)) @@ -739,7 +740,7 @@ int fpregs_set(struct task_struct *target, const struct user_regset *regset, * presence of FP. */ if (cpu_has_xsave) - target->thread.fpu.state->xsave.xsave_hdr.xstate_bv |= XSTATE_FP; + fpu->state->xsave.xsave_hdr.xstate_bv |= XSTATE_FP; return ret; } -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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