linux-kernel - [RFC v2 PATCH 13/14] irqchip: mips-gic: implement the new irq_send

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 13 Oct 2015 11:16:21 +0100
From:	Qais Yousef <qais.yousef@...tec.com>
To:	<linux-kernel@...r.kernel.org>
CC:	<tglx@...utronix.de>, <jason@...edaemon.net>,
	<marc.zyngier@....com>, <jiang.liu@...ux.intel.com>,
	<ralf@...ux-mips.org>, <linux-mips@...ux-mips.org>,
	Qais Yousef <qais.yousef@...tec.com>
Subject: [RFC v2 PATCH 13/14] irqchip: mips-gic: implement the new irq_send_ipi

Now irqchip has a irq_send_ipi() function, implement gic_send_ipi()
to make use of it

Signed-off-by: Qais Yousef <qais.yousef@...tec.com>
---
 drivers/irqchip/irq-mips-gic.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c
index 9c8ece1d90f2..764470375cd0 100644
--- a/drivers/irqchip/irq-mips-gic.c
+++ b/drivers/irqchip/irq-mips-gic.c
@@ -266,9 +266,24 @@ static void gic_bind_eic_interrupt(int irq, int set)
 		  GIC_VPE_EIC_SS(irq), set);
 }
 
-void gic_send_ipi(unsigned int intr)
+static void gic_send_ipi(struct irq_data *d, const struct ipi_mask *cpumask)
 {
-	gic_write(GIC_REG(SHARED, GIC_SH_WEDGE), GIC_SH_WEDGE_SET(intr));
+	struct ipi_mapping *map = irq_data_get_irq_chip_data(d);
+	irq_hw_number_t intr;
+	int vpe;
+
+	if (!map)
+		return;
+
+	vpe = find_first_bit(cpumask->cpumask, cpumask->nbits);
+	while (vpe != cpumask->nbits) {
+		intr = map->cpumap[vpe];
+		if (intr == INVALID_HWIRQ)
+			continue;
+		gic_write(GIC_REG(SHARED, GIC_SH_WEDGE), GIC_SH_WEDGE_SET(intr));
+
+		vpe = find_next_bit(cpumask->cpumask, cpumask->nbits, vpe + 1);
+	}
 }
 
 int gic_get_c0_compare_int(void)
@@ -476,6 +491,7 @@ static struct irq_chip gic_edge_irq_controller = {
 #ifdef CONFIG_SMP
 	.irq_set_affinity	=	gic_set_affinity,
 #endif
+	.irq_send_ipi		=	gic_send_ipi,
 };
 
 static void gic_handle_local_int(bool chained)
-- 
2.1.0

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/