Thread (5 messages) 5 messages, 3 authors, 2021-10-14

Re: [GIT PULL] ARM: support THREAD_INFO_IN_TASK

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From: "Russell King (Oracle)" <linux@armlinux.org.uk>
Date: 2021-10-14 15:49:01

On Sun, Oct 10, 2021 at 09:50:52AM +0200, Ard Biesheuvel wrote:
On Mon, 27 Sept 2021 at 17:06, Ard Biesheuvel [off-list ref] wrote:
quoted
The following changes since commit 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f:

  Linux 5.15-rc1 (2021-09-12 16:28:37 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git tags/pr-arm32-ti-in-task

for you to fetch changes up to 18ed1c01a7dd3d7c780b06a49124da237a4c1790:

  ARM: smp: Enable THREAD_INFO_IN_TASK (2021-09-27 16:54:02 +0200)

----------------------------------------------------------------
ARM: support THREAD_INFO_IN_TASK

Move thread_info off the stack and into the task struct, as is done by
many other architectures. This requires a method to find the task struct
of the task currently running on the CPU, which is provided in this case
by the user space TLS (Thread Local Storage) register. This implies that
the feature is only supported on CPUs that implement this register,
i.e., ARM v6k or later.

Kindly tested by Amit and reviewed by Linus. The first patch is against
the GCC plugins subsystem, but was reviewed by the maintainer and can be
taken through the ARM tree.

----------------------------------------------------------------
Ping?
I haven't forgotten about it, I just haven't really opened my tree for
new material yet... which I need to do this week, if I have time after
catching up.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!

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