From: Christopher Covington <cov@codeaurora.org>
To: criu@openvz.org, Will Deacon <will.deacon@arm.com>,
linux-mm@kvack.org, Laurent Dufour <ldufour@linux.vnet.ibm.com>
Cc: Christopher Covington <cov@codeaurora.org>,
Catalin Marinas <catalin.marinas@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [RFC v2 4/7] arm64: Use generic VDSO unmap and remap functions
Date: Tue, 1 Nov 2016 11:10:58 -0600 [thread overview]
Message-ID: <20161101171101.24704-4-cov@codeaurora.org> (raw)
In-Reply-To: <20161101171101.24704-1-cov@codeaurora.org>
Checkpoint/Restore In Userspace (CRIU) must be able to remap and unmap the
Virtual Dynamic Shared Object (VDSO) to be able to handle the changing
addresses that result from address space layout randomization. Now that
generic support is available and arm64 has adopted unsigned long for the
type of mm->context.vdso, opt-in to VDSO unmap and remap support.
Signed-off-by: Christopher Covington <cov@codeaurora.org>
---
arch/arm64/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 969ef88..534df3f 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -50,6 +50,7 @@ config ARM64
select GENERIC_STRNCPY_FROM_USER
select GENERIC_STRNLEN_USER
select GENERIC_TIME_VSYSCALL
+ select GENERIC_VDSO
select HANDLE_DOMAIN_IRQ
select HARDIRQS_SW_RESEND
select HAVE_ALIGNED_STRUCT_PAGE if SLUB
--
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.
next prev parent reply other threads:[~2016-11-01 17:11 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-01 17:10 [RFC v2 1/7] mm: Provide generic VDSO unmap and remap functions Christopher Covington
2016-11-01 17:10 ` [RFC v2 2/7] arm: Use generic VDSO unmap and remap Christopher Covington
2016-11-01 17:18 ` Russell King - ARM Linux
2016-11-01 17:10 ` [RFC v2 3/7] arm64: Use unsigned long for VDSO Christopher Covington
2016-11-01 17:10 ` Christopher Covington [this message]
2016-11-01 17:10 ` [RFC v2 5/7] powerpc: Rename context.vdso_base to context.vdso Christopher Covington
[not found] ` <87r36rn8nl.fsf@concordia.ellerman.id.au>
2016-11-04 20:13 ` Will Deacon
2016-11-07 8:01 ` Michael Ellerman
2016-11-01 17:11 ` [RFC v2 6/7] mm/powerpc: Use generic VDSO remap and unmap functions Christopher Covington
2016-11-04 4:59 ` Michael Ellerman
2016-11-07 20:20 ` Laurent Dufour
2016-11-07 23:51 ` Michael Ellerman
2016-11-01 17:23 ` [RFC v2 1/7] mm: Provide generic VDSO unmap and remap functions Dmitry Safonov
2016-11-02 0:23 ` Christopher Covington
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