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Re: [RFC v2 2/7] arm: Use generic VDSO unmap and remap

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You know, on its own, this patch is totally meaningless.  Sorry, there's
nothing more I can say about this.

On Tue, Nov 01, 2016 at 11:10:56AM -0600, Christopher Covington wrote:
> Checkpoint/Restore In Userspace (CRIU) needs to be able to unmap and remap
> the VDSO to successfully checkpoint and restore applications in the face of
> changing VDSO addresses due to Address Space Layout Randomization (ASLR,
> randmaps). Previously, this was implemented in architecture-specific code
> for PowerPC and x86. However, a generic version based on Laurent Dufour's
> PowerPC implementation is now available, so begin using it on ARM.
> 
> Signed-off-by: Christopher Covington <cov@codeaurora.org>
> ---
>  arch/arm/mm/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
> index c1799dd..1d3312b 100644
> --- a/arch/arm/mm/Kconfig
> +++ b/arch/arm/mm/Kconfig
> @@ -845,6 +845,7 @@ config VDSO
>  	depends on AEABI && MMU && CPU_V7
>  	default y if ARM_ARCH_TIMER
>  	select GENERIC_TIME_VSYSCALL
> +	select GENERIC_VDSO
>  	help
>  	  Place in the process address space an ELF shared object
>  	  providing fast implementations of gettimeofday and
> -- 
> Qualcomm Datacenter Technologies as an affiliate of Qualcomm Technologies, Inc.
> Qualcomm Technologies, Inc. is a member of the
> Code Aurora Forum, a Linux Foundation Collaborative Project.
> 

-- 
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[RFC v2 1/7] mm: Provide generic VDSO unmap and remap functions Christopher Covington <cov@codeaurora.org> - 2016-11-01 18:20 +0100
  [RFC v2 5/7] powerpc: Rename context.vdso_base to context.vdso Christopher Covington <cov@codeaurora.org> - 2016-11-01 18:20 +0100
    Re: [RFC v2 5/7] powerpc: Rename context.vdso_base to context.vdso Will Deacon <will.deacon@arm.com> - 2016-11-04 21:40 +0100
      Re: [RFC v2 5/7] powerpc: Rename context.vdso_base to context.vdso Michael Ellerman <mpe@ellerman.id.au> - 2016-11-07 09:10 +0100
  [RFC v2 4/7] arm64: Use generic VDSO unmap and remap functions Christopher Covington <cov@codeaurora.org> - 2016-11-01 18:20 +0100
  [RFC v2 6/7] mm/powerpc: Use generic VDSO remap and unmap functions Christopher Covington <cov@codeaurora.org> - 2016-11-01 18:20 +0100
    Re: [RFC v2 6/7] mm/powerpc: Use generic VDSO remap and unmap functions Michael Ellerman <mpe@ellerman.id.au> - 2016-11-04 06:00 +0100
      Re: [RFC v2 6/7] mm/powerpc: Use generic VDSO remap and unmap  functions Laurent Dufour <ldufour@linux.vnet.ibm.com> - 2016-11-07 21:30 +0100
        Re: [RFC v2 6/7] mm/powerpc: Use generic VDSO remap and unmap functions Michael Ellerman <mpe@ellerman.id.au> - 2016-11-08 01:00 +0100
  [RFC v2 3/7] arm64: Use unsigned long for VDSO Christopher Covington <cov@codeaurora.org> - 2016-11-01 18:20 +0100
  [RFC v2 2/7] arm: Use generic VDSO unmap and remap Christopher Covington <cov@codeaurora.org> - 2016-11-01 18:20 +0100
    Re: [RFC v2 2/7] arm: Use generic VDSO unmap and remap Russell King - ARM Linux <linux@armlinux.org.uk> - 2016-11-01 18:30 +0100
  Re: [RFC v2 1/7] mm: Provide generic VDSO unmap and remap functions Dmitry Safonov <0x7f454c46@gmail.com> - 2016-11-01 18:30 +0100
    Re: [RFC v2 1/7] mm: Provide generic VDSO unmap and remap functions Christopher Covington <cov@codeaurora.org> - 2016-11-02 01:30 +0100

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