From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH v2 8/8] arm64: Wire up and expose the new compat vDSO
Date: Fri, 4 Nov 2016 09:50:39 -0600 [thread overview]
Message-ID: <20161104155039.5lxubpyt2dsuqxef@localhost> (raw)
In-Reply-To: <20161027163058.12156-9-kevin.brodsky@arm.com>
On Thu, Oct 27, 2016 at 05:30:58PM +0100, Kevin Brodsky wrote:
> * The vDSO page replaces the vector page. The vDSO provides its own
> sigreturn trampolines, replacing those in the vector page, but the
> kuser helpers are gone. As a result enabling the compat vDSO will
> break userspace programs relying on the kuser helpers.
I think vDSO and vectors page should not exclude each other. If you want
to disable the vectors page, let's make it an independent config option
like the KUSER_HELPERS in arch/arm64/mm/Kconfig. But I would very much
like to be able to have both the vDSO and the vectors page at the same
time.
--
Catalin
next prev parent reply other threads:[~2016-11-04 15:50 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-27 16:30 [RFC PATCH v2 0/8] arm64: Add a compat vDSO Kevin Brodsky
2016-10-27 16:30 ` [RFC PATCH v2 1/8] arm64: Refactor vDSO setup Kevin Brodsky
2016-10-27 16:30 ` [RFC PATCH v2 2/8] arm64: compat: Add time-related syscall numbers Kevin Brodsky
2016-10-27 16:30 ` [RFC PATCH v2 3/8] arm64: compat: Expose offset to registers in sigframes Kevin Brodsky
2016-10-27 16:30 ` [RFC PATCH v2 4/8] arm64: compat: Add a 32-bit vDSO Kevin Brodsky
2016-10-28 3:09 ` Jisheng Zhang
2016-10-28 10:20 ` Kevin Brodsky
2016-11-04 20:03 ` Catalin Marinas
2016-11-21 15:45 ` Kevin Brodsky
2016-11-21 18:44 ` Catalin Marinas
2016-12-01 14:27 ` Kevin Brodsky
2016-10-27 16:30 ` [RFC PATCH v2 5/8] arm64: compat: 32-bit vDSO setup Kevin Brodsky
2016-10-27 16:30 ` [RFC PATCH v2 6/8] arm64: elf: Set AT_SYSINFO_EHDR in compat processes Kevin Brodsky
2016-10-27 16:30 ` [RFC PATCH v2 7/8] arm64: compat: Use vDSO sigreturn trampolines if available Kevin Brodsky
2016-10-27 16:30 ` [RFC PATCH v2 8/8] arm64: Wire up and expose the new compat vDSO Kevin Brodsky
2016-11-04 15:50 ` Catalin Marinas [this message]
2016-11-04 16:30 ` Kevin Brodsky
2016-11-04 16:47 ` Catalin Marinas
2016-11-04 17:53 ` Kevin Brodsky
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