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From: Mark Rutland <mark.rutland@arm.com>
To: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Cc: Ganesh Mahendran <opensource.ganesh@gmail.com>,
	catalin.marinas@arm.com, will.deacon@arm.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 1/2] arm64/mm: define ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT
Date: Wed, 2 May 2018 12:05:20 +0100	[thread overview]
Message-ID: <20180502110441.xuvjs7gu5xir6y72@lakrids.cambridge.arm.com> (raw)
In-Reply-To: <15c56137-e7c4-dbfa-ce5d-f5feeea79e98@linux.vnet.ibm.com>

On Wed, May 02, 2018 at 11:00:55AM +0200, Laurent Dufour wrote:
> On 02/05/2018 09:54, Ganesh Mahendran wrote:
> > Set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT for arm64. This
> > enables Speculative Page Fault handler.
> > 
> > Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com>
> > ---
> > This patch is on top of Laurent's v10 spf
> > ---
> >  arch/arm64/Kconfig | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> > index eb2cf49..cd583a9 100644
> > --- a/arch/arm64/Kconfig
> > +++ b/arch/arm64/Kconfig
> > @@ -144,6 +144,7 @@ config ARM64
> >  	select SPARSE_IRQ
> >  	select SYSCTL_EXCEPTION_TRACE
> >  	select THREAD_INFO_IN_TASK
> > +	select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT if SMP
> 
> There is no need to depend on SMP here as the upper
> CONFIG_SPECULATIVE_PAGE_FAULT is depending on SMP.

Additionally, since commit:

  4b3dc9679cf77933 ("arm64: force CONFIG_SMP=y and remove redundant #ifdefs")

... arm64 is always SMP.

Thanks,
Mark.

  reply	other threads:[~2018-05-02 11:05 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-02  7:54 Ganesh Mahendran
2018-05-02  7:54 ` [PATCH 2/2] arm64/mm: add speculative page fault Ganesh Mahendran
2018-05-02  9:07   ` Laurent Dufour
2018-05-04  6:25     ` Ganesh Mahendran
2018-05-02 14:07   ` kbuild test robot
2018-05-02 14:46   ` Punit Agrawal
2018-05-04  6:31     ` Ganesh Mahendran
2018-05-02  9:00 ` [PATCH 1/2] arm64/mm: define ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT Laurent Dufour
2018-05-02 11:05   ` Mark Rutland [this message]
2018-05-03  8:48 ` Chintan Pandya
  -- strict thread matches above, loose matches on Subject: below --
2018-05-02  7:53 Ganesh Mahendran
2018-05-02 12:23 ` Will Deacon
2018-05-04  6:05   ` Ganesh Mahendran

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