linux-kernel - [PATCH 5.17 064/343] kvm: selftests: aarch64: fix some vgic related comments

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Date:   Tue, 12 Apr 2022 08:28:02 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ricardo Koller <ricarkol@...gle.com>,
        Reiji Watanabe <reijiw@...gle.com>,
        Andrew Jones <drjones@...hat.com>,
        Marc Zyngier <maz@...nel.org>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.17 064/343] kvm: selftests: aarch64: fix some vgic related comments

From: Ricardo Koller <ricarkol@...gle.com>

[ Upstream commit a5cd38fd9c47b23abc6df08d6ee6a71b39038185 ]

Fix the formatting of some comments and the wording of one of them (in
gicv3_access_reg).

Signed-off-by: Ricardo Koller <ricarkol@...gle.com>
Reported-by: Reiji Watanabe <reijiw@...gle.com>
Cc: Andrew Jones <drjones@...hat.com>
Reviewed-by: Andrew Jones <drjones@...hat.com>
Signed-off-by: Marc Zyngier <maz@...nel.org>
Link: https://lore.kernel.org/r/20220127030858.3269036-5-ricarkol@google.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/testing/selftests/kvm/aarch64/vgic_irq.c   | 12 ++++++++----
 tools/testing/selftests/kvm/lib/aarch64/gic_v3.c | 10 ++++++----
 tools/testing/selftests/kvm/lib/aarch64/vgic.c   |  3 ++-
 3 files changed, 16 insertions(+), 9 deletions(-)

diff --git a/tools/testing/selftests/kvm/aarch64/vgic_irq.c b/tools/testing/selftests/kvm/aarch64/vgic_irq.c
index 48e43e24d240..554ca649d470 100644
--- a/tools/testing/selftests/kvm/aarch64/vgic_irq.c
+++ b/tools/testing/selftests/kvm/aarch64/vgic_irq.c
@@ -306,7 +306,8 @@ static void guest_restore_active(struct test_args *args,
 	uint32_t prio, intid, ap1r;
 	int i;
 
-	/* Set the priorities of the first (KVM_NUM_PRIOS - 1) IRQs
+	/*
+	 * Set the priorities of the first (KVM_NUM_PRIOS - 1) IRQs
 	 * in descending order, so intid+1 can preempt intid.
 	 */
 	for (i = 0, prio = (num - 1) * 8; i < num; i++, prio -= 8) {
@@ -315,7 +316,8 @@ static void guest_restore_active(struct test_args *args,
 		gic_set_priority(intid, prio);
 	}
 
-	/* In a real migration, KVM would restore all GIC state before running
+	/*
+	 * In a real migration, KVM would restore all GIC state before running
 	 * guest code.
 	 */
 	for (i = 0; i < num; i++) {
@@ -503,7 +505,8 @@ static void guest_code(struct test_args *args)
 		test_injection_failure(args, f);
 	}
 
-	/* Restore the active state of IRQs. This would happen when live
+	/*
+	 * Restore the active state of IRQs. This would happen when live
 	 * migrating IRQs in the middle of being handled.
 	 */
 	for_each_supported_activate_fn(args, set_active_fns, f)
@@ -844,7 +847,8 @@ int main(int argc, char **argv)
 		}
 	}
 
-	/* If the user just specified nr_irqs and/or gic_version, then run all
+	/*
+	 * If the user just specified nr_irqs and/or gic_version, then run all
 	 * combinations.
 	 */
 	if (default_args) {
diff --git a/tools/testing/selftests/kvm/lib/aarch64/gic_v3.c b/tools/testing/selftests/kvm/lib/aarch64/gic_v3.c
index e4945fe66620..263bf3ed8fd5 100644
--- a/tools/testing/selftests/kvm/lib/aarch64/gic_v3.c
+++ b/tools/testing/selftests/kvm/lib/aarch64/gic_v3.c
@@ -19,7 +19,7 @@ struct gicv3_data {
 	unsigned int nr_spis;
 };
 
-#define sgi_base_from_redist(redist_base) 	(redist_base + SZ_64K)
+#define sgi_base_from_redist(redist_base)	(redist_base + SZ_64K)
 #define DIST_BIT				(1U << 31)
 
 enum gicv3_intid_range {
@@ -105,7 +105,8 @@ static void gicv3_set_eoi_split(bool split)
 {
 	uint32_t val;
 
-	/* All other fields are read-only, so no need to read CTLR first. In
+	/*
+	 * All other fields are read-only, so no need to read CTLR first. In
 	 * fact, the kernel does the same.
 	 */
 	val = split ? (1U << 1) : 0;
@@ -160,8 +161,9 @@ static void gicv3_access_reg(uint32_t intid, uint64_t offset,
 
 	GUEST_ASSERT(bits_per_field <= reg_bits);
 	GUEST_ASSERT(!write || *val < (1U << bits_per_field));
-	/* Some registers like IROUTER are 64 bit long. Those are currently not
-	 * supported by readl nor writel, so just asserting here until then.
+	/*
+	 * This function does not support 64 bit accesses. Just asserting here
+	 * until we implement readq/writeq.
 	 */
 	GUEST_ASSERT(reg_bits == 32);
 
diff --git a/tools/testing/selftests/kvm/lib/aarch64/vgic.c b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
index f5cd0c536d85..7c876ccf9294 100644
--- a/tools/testing/selftests/kvm/lib/aarch64/vgic.c
+++ b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
@@ -152,7 +152,8 @@ static void vgic_poke_irq(int gic_fd, uint32_t intid,
 		attr += SZ_64K;
 	}
 
-	/* All calls will succeed, even with invalid intid's, as long as the
+	/*
+	 * All calls will succeed, even with invalid intid's, as long as the
 	 * addr part of the attr is within 32 bits (checked above). An invalid
 	 * intid will just make the read/writes point to above the intended
 	 * register space (i.e., ICPENDR after ISPENDR).
-- 
2.35.1