Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v6.6.132 2023-08-18T03:31:59+00:00 2023-08-18T03:31:59+00:00 Vineet Gupta vgupta@kernel.org 2020-05-13T05:18:08+00:00 urn:sha1:cfca4b5abe0cc13f9d9f45f760efd8260e31200f The motivation is eventual ABI considerations for ARCv3 but even without it this change us worthwhile as diffstat reduces 100 net lines r25 is a callee saved register, normally not saved by entry code in pt_regs. However because of its usage in CONFIG_ARC_CURR_IN_REG it needs to be. This in turn requires a whole bunch of special casing when we need to access r25. Then there is distinction between user mode r25 vs. kernel mode r25 - hence distinct SAVE_CALLEE_SAVED_{USER,KERNEL} Instead use gp which is a scratch register and thus saved already in entry code. This cleans things up significantly and much nocer on eyes: - SAVE_CALLEE_SAVED_{USER,KERNEL} are now exactly same - no special user_r25 slot in pt_reggs Note that typical global asm registers are callee-saved (r25), but gp is not callee-saved thus needs additional -ffixed-<reg> toggle Signed-off-by: Vineet Gupta <vgupta@kernel.org> 2019-06-19T15:09:55+00:00 Thomas Gleixner tglx@linutronix.de 2019-06-04T08:11:33+00:00 urn:sha1:d2912cb15bdda8ba4a5dd73396ad62641af2f520 Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2014-10-13T09:16:20+00:00 Vineet Gupta vgupta@synopsys.com 2014-09-27T07:19:11+00:00 urn:sha1:be64c997d96dd29029ed40d9df9cbf80fa1c7ed4 Verified by doing make headers_install as none of these files are exported to userspace 2013-02-15T17:45:58+00:00 Vineet Gupta vgupta@synopsys.com 2013-02-11T14:22:57+00:00 urn:sha1:080c37473eb671a037b3e9a315303851f0675be5 Signed-off-by: Vineet Gupta <vgupta@synopsys.com>