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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id i12sm2879398pfo.126.2021.10.14.09.24.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Oct 2021 09:24:54 -0700 (PDT) Date: Thu, 14 Oct 2021 09:24:53 -0700 From: Kees Cook To: "Russell King (Oracle)" Cc: Ard Biesheuvel , Linux ARM , Keith Packard , Arnd Bergmann , Amit Daniel Kachhap , Linus Walleij Subject: Re: [GIT PULL] ARM: support THREAD_INFO_IN_TASK Message-ID: <202110140924.CDCEB90@keescook> References: <20210927150443.2654851-1-ardb@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211014_092455_964303_178DD372 X-CRM114-Status: GOOD ( 25.61 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Oct 14, 2021 at 04:47:26PM +0100, Russell King (Oracle) wrote: > On Sun, Oct 10, 2021 at 09:50:52AM +0200, Ard Biesheuvel wrote: > > On Mon, 27 Sept 2021 at 17:06, Ard Biesheuvel wrote: > > > > > > 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. Thanks! Getting this into -next would help with the irq series and vmap stack series too. -- Kees Cook _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel