linux-kernel - [PATCH] irqchip: gic-v3: Collection table support muti pages

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Date:   Mon, 15 May 2023 20:10:04 +0800
From:   wangwudi <wangwudi@...ilicon.com>
To:     <linux-kernel@...r.kernel.org>
CC:     wangwudi <wangwudi@...ilicon.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>
Subject: [PATCH] irqchip: gic-v3: Collection table support muti pages

Only one page is allocated to the collection table.
Recalculate the page number of collection table based on the number of
CPUs.

Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Marc Zyngier <maz@...nel.org>
Signed-off-by: wangwudi <wangwudi@...ilicon.com>
---
 drivers/irqchip/irq-gic-v3-its.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 0ec2b1e1df75..dfdeba86b9aa 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -2626,6 +2626,10 @@ static int its_alloc_tables(struct its_node *its)
 			indirect = its_parse_indirect_baser(its, baser, &order,
 							    ITS_MAX_VPEID_BITS);
 			break;
+		case GITS_BASER_TYPE_COLLECTION:
+			indirect = its_parse_indirect_baser(its, baser, &order,
+								order_base_2(num_possible_cpus()));
+			break;
 		}
 
 		err = its_setup_baser(its, baser, cache, shr, order, indirect);
-- 
2.7.4