From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@armlinux.org.uk (Russell King - ARM Linux) Date: Tue, 1 Nov 2016 17:18:33 +0000 Subject: [RFC v2 2/7] arm: Use generic VDSO unmap and remap In-Reply-To: <20161101171101.24704-2-cov@codeaurora.org> References: <20161101171101.24704-1-cov@codeaurora.org> <20161101171101.24704-2-cov@codeaurora.org> Message-ID: <20161101171833.GS1041@n2100.armlinux.org.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 > --- > 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. > -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.