[PATCH v3 0/1] Add L1 and L2 error detection for A53 and A57
From: Sascha Hauer <s.hauer@pengutronix.de>
Date: 2021-01-07 10:40:12
Also in:
linux-edac
Hi all, It's been a while since I last sent this, so here's an update. Like Rob suggested I dropped using a virtual device tree node to attach the driver to, so from the original three patches series is only one patch left now. I think I have integrated all review feedback I got last time, please have a look. One thing that I find unfortunate in the driver is that I have to register the "cpu" hierarchy under edac for all CPUs. Only the CPUs supported by this driver actually count anything. On JUNO for example we have four cortex-a53 cores (which are supported by this driver) and four cortex-a72 cores (which are not supported). Nevertheless we create the directory hierarchy for all eight cores. I don't know how I should work around this, but maybe James has an idea. As usual, feedback welcome. Sascha Changes since v2: - drop usage of virtual dt node (Robh) - use read_sysreg_s instead of open coded variant (James Morse) - separate error retrieving from error reporting - use smp_call_function_single rather than smp_call_function_single_async - make driver single instance and register all 'cpu' hierarchy up front once Changes since v1: - Split dt-binding into separate patch - Sort local function variables in reverse-xmas tree order - drop unnecessary comparison and make variable bool Sascha Hauer (1): drivers/edac: Add L1 and L2 error detection for A53 and A57 drivers/edac/Kconfig | 6 + drivers/edac/Makefile | 1 + drivers/edac/cortex_arm64_l1_l2.c | 218 ++++++++++++++++++++++++++++++ 3 files changed, 225 insertions(+) create mode 100644 drivers/edac/cortex_arm64_l1_l2.c -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel