On Wed, Apr 22, 2015 at 11:27:31AM -0700, Dave Hansen wrote:
>
> From: Dave Hansen <[email protected]>
>
> Changes from "v19":
> * remove 'tsk' argument to get_xsave_addr() since the code
> can only realistically work on 'current', and fix up the
> comment a bit to match.
>
> Changes from "v17":
> * fix s/xstate/xsave_field/ in the function comment
> * remove EXPORT_SYMBOL_GPL()
>
> ---
> From: Dave Hansen <[email protected]>
>
> The MPX code appears to be saving off the FPU in an unsafe
> way. It does not disable preemption or ensure that the
> FPU state has been allocated.
>
> This patch introduces a new helper which will do both of
> those things internally.
>
> Note that this requires a patch from Oleg in order to work
> properly. It is currently in tip/x86/fpu.
>
> > commit f893959b0898bd876673adbeb6798bdf25c034d7
> > Author: Oleg Nesterov <[email protected]>
> > Date: Fri Mar 13 18:30:30 2015 +0100
> >
> > x86/fpu: Don't abuse drop_init_fpu() in flush_thread()
>
> Signed-off-by: Dave Hansen <[email protected]>
> Cc: Oleg Nesterov <[email protected]>
> Cc: [email protected]
> Cc: Rik van Riel <[email protected]>
> Cc: Suresh Siddha <[email protected]>
> Cc: Andy Lutomirski <[email protected]>
> Cc: Thomas Gleixner <[email protected]>
> Cc: Ingo Molnar <[email protected]>
> Cc: "H. Peter Anvin" <[email protected]>
> Cc: Fenghua Yu <[email protected]>
> Cc: the arch/x86 maintainers <[email protected]>
> ---
>
> b/arch/x86/include/asm/xsave.h | 1 +
> b/arch/x86/kernel/xsave.c | 32 ++++++++++++++++++++++++++++++++
> 2 files changed, 33 insertions(+)
Applied, thanks.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
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