From: Thomas Gleixner <tglx@linutronix.de>
To: Dave Hansen <dave@sr71.net>
Cc: hpa@zytor.com, mingo@redhat.com, x86@kernel.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-ia64@vger.kernel.org, linux-mips@linux-mips.org,
qiaowei.ren@intel.com, dave.hansen@linux.intel.com
Subject: Re: [PATCH 09/11] x86, mpx: on-demand kernel allocation of bounds tables
Date: Fri, 14 Nov 2014 17:47:19 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.11.1411141743230.3935@nanos> (raw)
In-Reply-To: <20141114151829.AD4310DE@viggo.jf.intel.com>
On Fri, 14 Nov 2014, Dave Hansen wrote:
> * move mm init-time #ifdef to mpx.h
> +static inline void arch_bprm_mm_init(struct mm_struct *mm,
> + struct vm_area_struct *vma)
> +{
> + mpx_mm_init(mm);
> +#ifdef CONFIG_X86_INTEL_MPX
> + mm->bd_addr = MPX_INVALID_BOUNDS_DIR;
> +#endif
So we have a double init now :)
> +++ b/arch/x86/kernel/setup.c 2014-11-14 07:06:23.941684394 -0800
> @@ -959,6 +959,13 @@ void __init setup_arch(char **cmdline_p)
> init_mm.end_code = (unsigned long) _etext;
> init_mm.end_data = (unsigned long) _edata;
> init_mm.brk = _brk_end;
> +#ifdef CONFIG_X86_INTEL_MPX
> + /*
> + * NULL is theoretically a valid place to put the bounds
> + * directory, so point this at an invalid address.
> + */
> + init_mm.bd_addr = MPX_INVALID_BOUNDS_DIR;
> +#endif
And this one wants mpx_mm_init() replacement as well.
Thanks,
tglx
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next prev parent reply other threads:[~2014-11-14 16:47 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-14 15:18 [PATCH 00/11] [v11] Intel MPX support Dave Hansen
2014-11-14 15:18 ` [PATCH 01/11] x86, mpx: rename cfg_reg_u and status_reg Dave Hansen
2014-11-14 15:18 ` [PATCH 02/11] mpx: extend siginfo structure to include bound violation information Dave Hansen
2014-11-14 15:18 ` [PATCH 03/11] mips: sync struct siginfo with general version Dave Hansen
2014-11-14 15:18 ` [PATCH 04/11] ia64: " Dave Hansen
2014-11-14 15:18 ` [PATCH 05/11] x86, mpx: add MPX to disaabled features Dave Hansen
2014-11-14 17:56 ` Sergei Shtylyov
2014-11-14 18:38 ` Dave Hansen
2014-11-14 15:18 ` [PATCH 06/11] x86, mpx: introduce VM_MPX to indicate that a VMA is MPX specific Dave Hansen
2014-11-14 15:18 ` [PATCH 07/11] x86, mpx: add MPX-specific mmap interface Dave Hansen
2014-11-14 15:18 ` [PATCH 08/11] x86, mpx: [new code] decode MPX instruction to get bound violation information Dave Hansen
2014-11-14 15:18 ` [PATCH 09/11] x86, mpx: on-demand kernel allocation of bounds tables Dave Hansen
2014-11-14 16:47 ` Thomas Gleixner [this message]
2014-11-14 17:10 ` Dave Hansen
2014-11-14 15:18 ` [PATCH 10/11] x86, mpx: cleanup unused bound tables Dave Hansen
2014-11-14 15:18 ` [PATCH 11/11] x86, mpx: add documentation on Intel MPX Dave Hansen
-- strict thread matches above, loose matches on Subject: below --
2014-11-12 17:04 [PATCH 00/11] [v10] Intel MPX support Dave Hansen
2014-11-12 17:05 ` [PATCH 09/11] x86, mpx: on-demand kernel allocation of bounds tables Dave Hansen
2014-11-13 14:29 ` Thomas Gleixner
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