Now that the estatus queue can be used by more than one notification method, we can move notifications that have NMI-like behaviour over. Switch NOTIFY_SEA over to use the estatus queue. This makes it behave in the same way as x86's NOTIFY_NMI. Remove Kconfig's ability to turn ACPI_APEI_SEA off if ACPI_APEI_GHES is selected. This roughly matches the x86 NOTIFY_NMI behaviour, and means each architecture has at least one user of the estatus-queue, meaning it doesn't need guarding with ifdef. Signed-off-by: James Morse <james.morse@xxxxxxx> --- Changes since v6: * Lost all the pool grow/shrink stuff, * Changed Kconfig so this can't be turned off to avoid kconfig complexity: * Dropped Tyler's tested-by. * For now we need #ifdef around the SEA code as the arch code assumes its there. * Removed Punit's reviewed-by due to the swirling #ifdeffery --- drivers/acpi/apei/Kconfig | 12 +----------- drivers/acpi/apei/ghes.c | 22 +++++----------------- 2 files changed, 6 insertions(+), 28 deletions(-) diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig index 52ae5438edeb..6b18f8bc7be3 100644 --- a/drivers/acpi/apei/Kconfig +++ b/drivers/acpi/apei/Kconfig @@ -41,19 +41,9 @@ config ACPI_APEI_PCIEAER Turn on this option to enable the corresponding support. config ACPI_APEI_SEA - bool "APEI Synchronous External Abort logging/recovering support" + bool depends on ARM64 && ACPI_APEI_GHES default y - help - This option should be enabled if the system supports - firmware first handling of SEA (Synchronous External Abort). - SEA happens with certain faults of data abort or instruction - abort synchronous exceptions on ARMv8 systems. If a system - supports firmware first handling of SEA, the platform analyzes - and handles hardware error notifications from SEA, and it may then - form a HW error record for the OS to parse and handle. This - option allows the OS to look for such hardware error record, and - take appropriate action. config ACPI_APEI_MEMORY_FAILURE bool "APEI memory error recovering support" diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 00fe4785e469..4b33fa562e32 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -765,7 +765,6 @@ static struct notifier_block ghes_notifier_hed = { .notifier_call = ghes_notify_hed, }; -#ifdef CONFIG_HAVE_ACPI_APEI_NMI /* * Handlers for CPER records may not be NMI safe. For example, * memory_failure_queue() takes spinlocks and calls schedule_work_on(). @@ -905,7 +904,6 @@ static int ghes_estatus_queue_notified(struct list_head *rcu_list) return ret; } -#endif /* CONFIG_HAVE_ACPI_APEI_NMI */ #ifdef CONFIG_ACPI_APEI_SEA static LIST_HEAD(ghes_sea); @@ -916,16 +914,7 @@ static LIST_HEAD(ghes_sea); */ int ghes_notify_sea(void) { - struct ghes *ghes; - int ret = -ENOENT; - - rcu_read_lock(); - list_for_each_entry_rcu(ghes, &ghes_sea, list) { - if (!ghes_proc(ghes)) - ret = 0; - } - rcu_read_unlock(); - return ret; + return ghes_estatus_queue_notified(&ghes_sea); } static void ghes_sea_add(struct ghes *ghes) @@ -992,16 +981,15 @@ static void ghes_nmi_remove(struct ghes *ghes) */ synchronize_rcu(); } +#else /* CONFIG_HAVE_ACPI_APEI_NMI */ +static inline void ghes_nmi_add(struct ghes *ghes) { } +static inline void ghes_nmi_remove(struct ghes *ghes) { } +#endif /* CONFIG_HAVE_ACPI_APEI_NMI */ static void ghes_nmi_init_cxt(void) { init_irq_work(&ghes_proc_irq_work, ghes_proc_in_irq); } -#else /* CONFIG_HAVE_ACPI_APEI_NMI */ -static inline void ghes_nmi_add(struct ghes *ghes) { } -static inline void ghes_nmi_remove(struct ghes *ghes) { } -static inline void ghes_nmi_init_cxt(void) { } -#endif /* CONFIG_HAVE_ACPI_APEI_NMI */ static int ghes_probe(struct platform_device *ghes_dev) { -- 2.19.2