kernel/linux.git/arch/arm64/include/asm/system_misc.h, branch linux-5.9.y

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234

2019-06-19T15:09:07+00:00

Based on 1 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 distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 503 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Alexios Zavras Reviewed-by: Allison Randal Reviewed-by: Enrico Weigelt Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de Signed-off-by: Greg Kroah-Hartman

arm64: mm: Make show_pte() a static function

2019-04-03T12:36:54+00:00

show_pte() doesn't have any external callers, so make it static. Signed-off-by: Will Deacon

KVM: arm/arm64: Add kvm_ras.h to collect kvm specific RAS plumbing

2019-02-07T22:10:45+00:00

To split up APEIs in_nmi() path, the caller needs to always be in_nmi(). KVM shouldn't have to know about this, pull the RAS plumbing out into a header file. Currently guest synchronous external aborts are claimed as RAS notifications by handle_guest_sea(), which is hidden in the arch codes mm/fault.c. 32bit gets a dummy declaration in system_misc.h. There is going to be more of this in the future if/when the kernel supports the SError-based firmware-first notification mechanism and/or kernel-first notifications for both synchronous external abort and SError. Each of these will come with some Kconfig symbols and a handful of header files. Create a header file for all this. This patch gives handle_guest_sea() a 'kvm_' prefix, and moves the declarations to kvm_ras.h as preparation for a future patch that moves the ACPI-specific RAS code out of mm/fault.c. Signed-off-by: James Morse Reviewed-by: Punit Agrawal Acked-by: Marc Zyngier Tested-by: Tyler Baicar Acked-by: Catalin Marinas Signed-off-by: Rafael J. Wysocki

signal/arm64: Push siginfo generation into arm64_notify_die

2018-09-27T19:52:54+00:00

Instead of generating a struct siginfo before calling arm64_notify_die pass the signal number, tne sicode and the fault address into arm64_notify_die and have it call force_sig_fault instead of force_sig_info to let the generic code generate the struct siginfo. This keeps code passing just the needed information into siginfo generating code, making it easier to see what is happening and harder to get wrong. Further by letting the generic code handle the generation of struct siginfo it reduces the number of sites generating struct siginfo making it possible to review them and verify that all of the fiddly details for a structure passed to userspace are handled properly. Reviewed-by: Catalin Marinas Tested-by: Catalin Marinas Signed-off-by: "Eric W. Biederman"

arm64: Move show_unhandled_signals_ratelimited into traps.c

2018-03-06T18:52:31+00:00

show_unhandled_signals_ratelimited is only called in traps.c, so move it out of its macro in the dreaded system_misc.h and into a static function in traps.c Signed-off-by: Will Deacon

Merge branch 'aarch64/for-next/ras-apei' into aarch64/for-next/core

2017-06-26T09:54:27+00:00

Merge in arm64 ACPI RAS support (APEI/GHES) from Tyler Baicar.

arm/arm64: KVM: add guest SEA support

2017-06-22T17:22:05+00:00

Currently external aborts are unsupported by the guest abort handling. Add handling for SEAs so that the host kernel reports SEAs which occur in the guest kernel. When an SEA occurs in the guest kernel, the guest exits and is routed to kvm_handle_guest_abort(). Prior to this patch, a print message of an unsupported FSC would be printed and nothing else would happen. With this patch, the code gets routed to the APEI handling of SEAs in the host kernel to report the SEA information. Signed-off-by: Tyler Baicar Acked-by: Catalin Marinas Acked-by: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Will Deacon

arm64: mm: print out correct page table entries

2017-06-12T11:33:37+00:00

When we take a fault that can't be handled, we print out the page table entries associated with the faulting address. In some cases we currently print out the wrong entries. For a faulting TTBR1 address, we sometimes print out TTBR0 table entries instead, and for a faulting TTBR0 address we sometimes print out TTBR1 table entries. Fix this by choosing the tables based on the faulting address. Acked-by: Mark Rutland Signed-off-by: Kristina Martsenko [will: zero-extend addrs to 64-bit, don't walk swapper w/ TTBR0 addr] Signed-off-by: Will Deacon

arm64: cleanup unused UDBG_* define

2016-08-31T12:45:46+00:00

The UDBG_UNDEFINED/SYSCALL/BADABORT/SEGV are only used to show verbose user fault messages in arm, not arm64, drop them. Signed-off-by: Kefeng Wang Signed-off-by: Will Deacon

arm64: use private ratelimit state along with show_unhandled_signals

2015-06-19T15:26:15+00:00

printk_ratelimit() shares the ratelimiting state with other callers what may lead to scenarios where at the time we want to print out debug information we already limited, so nothing appears in the dmesg - this makes exception-trace quite poor helper in debugging. Additionally, we have imbalance with some messages limited with global ratelimit state and other messages limited with their private state defined via pr_*_ratelimited(). To address this inconsistency show_unhandled_signals_ratelimited() macro is introduced and caller sites are converted to use it. Signed-off-by: Vladimir Murzin Signed-off-by: Catalin Marinas