[PATCH 2/3] Revert "arm64: smp: avoid NMI IPIs with broken MediaTek FW"

Douglas Anderson
2023-10-06T22:16:54Z

This reverts commit a07a594152173a3dd3bdd12fc7d73dbba54cdbca.

This is no longer needed after the patch ("arm64: Disable GiC
priorities on Mediatek devices w/ firmware issues").

Signed-off-by: Douglas Anderson <dianders@chromium.org>
---

arch/arm64/kernel/smp.c | 5 +----
drivers/irqchip/irq-gic-v3.c | 2 +-
2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 16ead57a583d..f36a97a54d2b 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -964,10 +964,7 @@ static void smp_cross_call(const struct cpumask *target, unsigned int ipinr)

static bool ipi_should_be_nmi(enum ipi_msg_type ipi)
{
- DECLARE_STATIC_KEY_FALSE(supports_pseudo_nmis);
-
- if (!system_uses_irq_prio_masking() ||
- !static_branch_likely(&supports_pseudo_nmis))
+ if (!system_uses_irq_prio_masking())
return false;

switch (ipi) {
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 737da1b9aabf..787ccc880b22 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -106,7 +106,7 @@ static DEFINE_STATIC_KEY_TRUE(supports_deactivate_key);
* - Figure 4-7 Secure read of the priority field for a Non-secure Group 1
* interrupt.
*/
-DEFINE_STATIC_KEY_FALSE(supports_pseudo_nmis);
+static DEFINE_STATIC_KEY_FALSE(supports_pseudo_nmis);

DEFINE_STATIC_KEY_FALSE(gic_nonsecure_priorities);
EXPORT_SYMBOL(gic_nonsecure_priorities);
--
2.42.0.609.gbb76f46606-goog