@@ -55,7 +55,9 @@ enum fixed_addresses {
#ifdef CONFIG_ACPI_APEI_GHES
/* Used for GHES mapping from assorted contexts */
FIX_APEI_GHES_IRQ,
- FIX_APEI_GHES_NMI,
+#ifdef CONFIG_ACPI_APEI_SEA
+ FIX_APEI_GHES_SEA,
+#endif
#endif /* CONFIG_ACPI_APEI_GHES */
#ifdef CONFIG_UNMAP_KERNEL_AT_EL0
@@ -119,7 +119,6 @@ static DEFINE_MUTEX(ghes_list_mutex);
* handler, but general ioremap can not be used in atomic context, so
* the fixmap is used instead.
*/
-static DEFINE_RAW_SPINLOCK(ghes_fixmap_lock_nmi);
static DEFINE_SPINLOCK(ghes_fixmap_lock_irq);
static struct gen_pool *ghes_estatus_pool;
@@ -931,6 +930,7 @@ static struct notifier_block ghes_notifier_hed = {
#ifdef CONFIG_ACPI_APEI_SEA
static LIST_HEAD(ghes_sea);
+static DEFINE_RAW_SPINLOCK(ghes_fixmap_lock_sea);
/*
* Return 0 only if one of the SEA error sources successfully reported an error
@@ -943,8 +943,8 @@ int ghes_notify_sea(void)
static void ghes_sea_add(struct ghes *ghes)
{
- ghes->nmi_fixmap_lock = &ghes_fixmap_lock_nmi;
- ghes->fixmap_idx = FIX_APEI_GHES_NMI;
+ ghes->nmi_fixmap_lock = &ghes_fixmap_lock_sea;
+ ghes->fixmap_idx = FIX_APEI_GHES_SEA;
ghes_estatus_queue_grow_pool(ghes);
mutex_lock(&ghes_list_mutex);
@@ -974,6 +974,7 @@ static inline void ghes_sea_remove(struct ghes *ghes) { }
static atomic_t ghes_in_nmi = ATOMIC_INIT(0);
static LIST_HEAD(ghes_nmi);
+static DEFINE_RAW_SPINLOCK(ghes_fixmap_lock_nmi);
static int ghes_notify_nmi(unsigned int cmd, struct pt_regs *regs)
{
Now that ghes uses the fixmap addresses and locks via some indirection we can support multiple NMI-like notifications on arm64. These should be named after their notification method. x86's NOTIFY_NMI is unchanged, change the SEA fixmap entry to use FIX_APEI_GHES_SEA. Future patches can add support for FIX_APEI_GHES_SEI and FIX_APEI_GHES_SDEI_{NORMAL,CRITICAL}. Not-signed-off: James Morse <james.morse@arm.com> --- arch/arm64/include/asm/fixmap.h | 4 +++- drivers/acpi/apei/ghes.c | 7 ++++--- 2 files changed, 7 insertions(+), 4 deletions(-)