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From: Jingyi Wang <wangjingyi11@huawei.com>
To: <drjones@redhat.com>, <kvm@vger.kernel.org>,
	<kvmarm@lists.cs.columbia.edu>
Cc: maz@kernel.org, prime.zeng@hisilicon.com
Subject: [kvm-unit-tests PATCH v3 04/10] arm64: its: Handle its command queue wrapping
Date: Fri, 31 Jul 2020 15:42:38 +0800
Message-ID: <20200731074244.20432-5-wangjingyi11@huawei.com> (raw)
In-Reply-To: <20200731074244.20432-1-wangjingyi11@huawei.com>

Because micro-bench may send a large number of ITS commands, we
should handle ITS command queue wrapping as kernel instead of just
failing the test.

Signed-off-by: Jingyi Wang <wangjingyi11@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
---
 lib/arm64/gic-v3-its-cmd.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/arm64/gic-v3-its-cmd.c b/lib/arm64/gic-v3-its-cmd.c
index 2c208d1..34574f7 100644
--- a/lib/arm64/gic-v3-its-cmd.c
+++ b/lib/arm64/gic-v3-its-cmd.c
@@ -164,8 +164,9 @@ static struct its_cmd_block *its_allocate_entry(void)
 {
 	struct its_cmd_block *cmd;
 
-	assert((u64)its_data.cmd_write < (u64)its_data.cmd_base + SZ_64K);
 	cmd = its_data.cmd_write++;
+	if ((u64)its_data.cmd_write  == (u64)its_data.cmd_base + SZ_64K)
+		its_data.cmd_write = its_data.cmd_base;
 	return cmd;
 }
 
-- 
2.19.1


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  parent reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-31  7:42 [kvm-unit-tests PATCH v3 00/10] arm/arm64: Add IPI/LPI/vtimer latency test Jingyi Wang
2020-07-31  7:42 ` [kvm-unit-tests PATCH v3 01/10] arm64: microbench: get correct ipi received num Jingyi Wang
2020-07-31  7:42 ` [kvm-unit-tests PATCH v3 02/10] arm64: microbench: Generalize ipi test names Jingyi Wang
2020-07-31  7:42 ` [kvm-unit-tests PATCH v3 03/10] arm64: microbench: gic: Add ipi latency test for gicv4.1 support kvm Jingyi Wang
2020-07-31  7:42 ` Jingyi Wang [this message]
2020-07-31  7:42 ` [kvm-unit-tests PATCH v3 05/10] arm64: microbench: its: Add LPI latency test Jingyi Wang
2020-07-31  7:42 ` [kvm-unit-tests PATCH v3 06/10] arm64: microbench: Allow each test to specify its running times Jingyi Wang
2020-07-31  7:42 ` [kvm-unit-tests PATCH v3 07/10] arm64: microbench: Add time limit for each individual test Jingyi Wang
2020-08-01 16:13   ` Andrew Jones
2020-07-31  7:42 ` [kvm-unit-tests PATCH v3 08/10] arm64: microbench: Add vtimer latency test Jingyi Wang
2020-08-01 16:22   ` Andrew Jones
2020-07-31  7:42 ` [kvm-unit-tests PATCH v3 09/10] arm64: microbench: Add test->post() to further process test results Jingyi Wang
2020-08-01 17:03   ` Andrew Jones
2020-07-31  7:42 ` [kvm-unit-tests PATCH v3 10/10] arm64: microbench: Add timer_post() to get actual PPI latency Jingyi Wang
2020-07-31 12:01 ` [kvm-unit-tests PATCH v3 00/10] arm/arm64: Add IPI/LPI/vtimer latency test Andrew Jones
2020-08-03  2:15   ` Jingyi Wang
2020-08-01 17:40 ` Andrew Jones
2020-08-05 11:54 ` Jingyi Wang
2020-08-05 12:13   ` Marc Zyngier

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