0002-Fix-interrupt-priorities-for-virtualized-GIC-not-bei.patch

From 540b33a5e2856ffbe8e43cdcb2575bb2008e66bf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gero=20Schw=C3=A4ricke?= <gero.schwaericke@tum.de>
Date: Sun, 14 Feb 2021 18:15:22 +0100
Subject: [PATCH] Fix interrupt priorities for virtualized GIC not being set

---
 hypervisor/arch/arm-common/gic-v2.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hypervisor/arch/arm-common/gic-v2.c b/hypervisor/arch/arm-common/gic-v2.c
index d448ec40..6a272f34 100644
--- a/hypervisor/arch/arm-common/gic-v2.c
+++ b/hypervisor/arch/arm-common/gic-v2.c
@@ -289,6 +289,7 @@ static int gicv2_inject_irq(u16 irq_id, u16 sender)
 	int first_free = -1;
 	u32 lr;
 	unsigned long elsr[2];
+	u8 prio;
 
 	elsr[0] = mmio_read32(gich_base + GICH_ELSR0);
 	elsr[1] = mmio_read32(gich_base + GICH_ELSR1);
@@ -313,6 +314,10 @@ static int gicv2_inject_irq(u16 irq_id, u16 sender)
 	lr = irq_id;
 	lr |= GICH_LR_PENDING_BIT;
 
+	/* Fetch interrupt priority from gicd and insert into lr entry */
+	prio = mmio_read8(gicd_base + GICD_IPRIORITYR + irq_id);
+	lr |= (u32)(prio & 0xF8) << 20;
+
 	if (is_sgi(irq_id)) {
 		lr |= (sender & 0x7) << GICH_LR_CPUID_SHIFT;
 	} else {
-- 
2.20.1