Messages in this thread | | | Date | Thu, 29 Jan 2015 16:58:57 -0500 | From | Rik van Riel <> | Subject | Re: [PATCH 0/3]: x86, fpu: unlazy_fpu fixes/cleanups |
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On 01/29/2015 04:56 PM, Oleg Nesterov wrote:
> How about the trivial patch below (on top of this series) ?
Hey, I just typed that, too! :)
Reviewed-by: Rik van Riel <riel@redhat.com>
> --- x/arch/x86/kernel/traps.c > +++ x/arch/x86/kernel/traps.c > @@ -313,7 +313,7 @@ dotraplinkage void do_bounds(struct pt_r > * It is not directly accessible, though, so we need to > * do an xsave and then pull it out of the xsave buffer. > */ > - fpu_save_init(&tsk->thread.fpu); > + unlazy_fpu(tsk); > xsave_buf = &(tsk->thread.fpu.state->xsave); > bndcsr = get_xsave_addr(xsave_buf, XSTATE_BNDCSR); > if (!bndcsr) > --- x/arch/x86/mm/mpx.c > +++ x/arch/x86/mm/mpx.c > @@ -352,7 +352,7 @@ static __user void *task_get_bounds_dir( > * The bounds directory pointer is stored in a register > * only accessible if we first do an xsave. > */ > - fpu_save_init(&tsk->thread.fpu); > + unlazy_fpu(tsk); > bndcsr = get_xsave_addr(&tsk->thread.fpu.state->xsave, XSTATE_BNDCSR); > if (!bndcsr) > return MPX_INVALID_BOUNDS_DIR; >
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